X20 || ALFA LAVAL. Технические характеристики …For heavy crude oil dehydration X20 The Alfa Laval X20, model OFSX 520T-11CEGPX, is a high capacity purifier

For heavy crude oil dehydration

X20

The Alfa Laval X20, model OFSX 520T-11CEGPX, is a high capacity purifier designed for dehydration of crude oil, espe-cially heavy crude oil with an API down to 11.5. The design is based on the robust nozzle-type centrifuge in order to withstand the demanding situations encountered in the oil producing industry. The machine is in compliance with the EC ATEX directive category 2, and therefore Zones 1 and 2. As an option, the machine can be operated under a positive pressure of 400 kPa, as it has an ASME-approved pressure casing. The X20 purifier is one machine in the X20 family, which also consists of machines for applications such as produced water de-oiling and tar sand dehydration.

ApplicationsThe X20 purifier is designed to reduce the water and particle content down to 0.5% BS&W or lower in crude oil at a water cut of up to 30%. Using a centrifuge for this application is especially suitable for heavy crude oil (down to API 11.5). The compact design makes it especially useful for offshore processing, including at floating platforms where the sea heave may cause problems for conventional technology.

X20 purifier complete with skid.

Архангельск (8182)63-90-72 Астана (7172)727-132 Астрахань (8512)99-46-04 Барнаул (3852)73-04-60 Белгород (4722)40-23-64 Брянск (4832)59-03-52 Владивосток (423)249-28-31 Волгоград (844)278-03-48 Вологда (8172)26-41-59 Воронеж (473)204-51-73 Екатеринбург (343)384-55-89 Иваново (4932)77-34-06

Ижевск (3412)26-03-58 Иркутск (395)279-98-46 Казань (843)206-01-48 Калининград (4012)72-03-81 Калуга (4842)92-23-67 Кемерово (3842)65-04-62 Киров (8332)68-02-04 Краснодар (861)203-40-90 Красноярск (391)204-63-61 Курск (4712)77-13-04 Липецк (4742)52-20-81 Киргизия (996)312-96-26-47

Магнитогорск (3519)55-03-13 Москва (495)268-04-70 Мурманск (8152)59-64-93 Набережные Челны (8552)20-53-41 Нижний Новгород (831)429-08-12 Новокузнецк (3843)20-46-81 Новосибирск (383)227-86-73 Омск (3812)21-46-40 Орел (4862)44-53-42 Оренбург (3532)37-68-04 Пенза (8412)22-31-16 Казахстан (772)734-952-31

Пермь (342)205-81-47 Ростов-на-Дону (863)308-18-15 Рязань (4912)46-61-64 Самара (846)206-03-16 Санкт-Петербург (812)309-46-40 Саратов (845)249-38-78 Севастополь (8692)22-31-93 Симферополь (3652)67-13-56 Смоленск (4812)29-41-54 Сочи (862)225-72-31 Ставрополь (8652)20-65-13 Таджикистан (992)427-82-92-69

Сургут (3462)77-98-35 Тверь (4822)63-31-35 Томск (3822)98-41-53 Тула (4872)74-02-29 Тюмень (3452)66-21-18 Ульяновск (8422)24-23-59 Уфа (347)229-48-12 Хабаровск (4212)92-98-04 Челябинск (351)202-03-61 Череповец (8202)49-02-64 Ярославль (4852)69-52-93

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Standard designSeparation takes place in the bowl, which is placed on a vertical spindle. An electric motor mounted vertically drives the spindle near the bottom via a flat belt. Circulating of lube oil ensures that the bearings are lubricated. An external pump maintains the necessary pressure. The centrifuge motor is designed for variable frequency drive.

All metallic parts that come into contact with the process liquid are made of high-grade stainless steel. Liquid-wetted gaskets are made of fluorocarbon rubber. To recover energy from the discharged nozzle flow, the nozzles are placed in the bowl periphery at a narrow angle from the tangent. The eighteen nozzles can be reached from the outside via a hatch in the frame hood, which enables technicians to replace them easily and rapidly without dismantling the frame. The nozzles are made of tungsten carbide, suitable for abrasive solids. The solids collecting ring is provided with a wear liner made of polyurethane. The inlet and outlets are fitted with flanged con-nections according to ASME B16.5. A rotating face seal seals off the bowl casing from the bearings. A cover interlocking kit makes it impossible to start the centrifuge unless it is properly assembled.

Special featuresThe X20 purifier can be fitted with an OPTIPHASER™ system, which automatically ensures a correct and stable position of the oil/water interface and therefore a consistent separa-tion performance without oil loss through the nozzles even at

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sudden and/or frequent changes in flow rate and/or water cut from 0 – 100%. The system is designed so that water can be imported into the bowl backwards through the outlet for separated water, if necessary.

Basic equipmentCentrifuge with motor, set of tools, speed, vibration and oil pressure sensors, temperature sensors for the main spindle bearing, thermistors in the motor winding preventing overload, vibration dampening feet, foundation plate and standard set of spares.

OptionsAll X20 machines can be fitted with a nozzle monitor. This consists of a sensing device, which is hit by the jet from each individual nozzle. The signal is then transmitted to the control system, which displays the result. The control system shows whether the nozzles are clogged or worn out, therefore ena-bling safe operation and high availability.The machine can be supplied with a pressurised bowl casing, design pressure 400 kPag.A conversion kit for rebuilding of the X20 purifier into a version for de-oiling of water (X20 concentrator) is available. It is usually supplied as a functioning unit with a process liquid module, starter and controls. In cases where flammable liquids are processed, an inert gas system is provided with controls integrated in the machine control system.

Operating principlesThe feed is introduced to the rotating centrifuge bowl from the top via a stationary inlet pipe (1), and is accelerated in a distributor (2) before entering the disc stack (3). Separation takes place between the discs. The oil phase moves through the disc stack towards the centre of the bowl, and is pumped out under pressure by means of a built-in paring disc (4). The solids are collected at the bowl periphery and continu-ously discharged through the nozzles together with some water. The water droplets move towards the periphery to the oil/water interface where they coalesce to form a continu-ous water phase. The water that does not pass out through the nozzles is collected in pipes leading towards the centre through the bowl bottom into a chamber from where the water is pumped out under pressure by a paring disc. If the water flow is insufficient to satisfy the nozzle demand, water is imported into the bowl backwards through the paring disc by the OPTIPHASER™ system, ensuring no loss of oil through the nozzles. Filler pieces (5) prevent build-up of the solids between the nozzles and consequently no solid cones can build up that collapse over the nozzle, blocking and disturbing normal production.

Typical bowl drawing for a nozzle centrifuge for three phase separa-tion. Drawing details do not necessarily correspond to the centrifuge described.

Technical specifications

Throughput capacity max. 190 m3/h (840 US gpm) 1)

Water flow max. 60 m3/h (260 US gpm)

Oil flow max. 190 m3/h (840 US gpm)

Nozzle flow max. 30 m3/h (130 US gpm)

Bowl volume 70 l

Bowl speed 3,750 rpm

Motor speed, synchronous. 50/60Hz 1,500/1,800 rpm

Motor power installed 152 kW

Centrifugal force inside bowl max. 6,480 g

Starting time 5–8 mins

Stopping time without brake 80 mins

Stopping time with brake 6–7 mins

Feed temperature range max. 110 °C (230 °F) 2)

Feed inlet pressure required at inlet flange min. 100 kPa 3)

Outlet pressure of oil at outlet flange 500 kPa 4)

Outlet pressure of water at outlet flange 600 kPa 5)

Sound pressure 82 dB(A) 6)

1 ) Actual capacity depends on particle sizes, densities, viscosity and required degree of separation.2 ) May be limited by vapour pressure of the feed liquid.3 ) At a process flow rate of 130 m3/h. Inlet pressure increases with the flow rate and increased vapour pressure.4 ) At outlet flow rate of 130 m3/h. Max. pressure decreases with flow rate.5 ) Valid for water export at flow rate 60 m3/h.6 ) At a process flow rate of 130 m3/h. According to ISO 3746.

Utilities consumption

Electric power max. 96 kW 1)

Safety water 43–55 m3/h (190–240 US gpm) 2)

Inert gas blanketing approx. 0.4 Nm3/h

Inert gas initial purging approx. 4 Nm3

1 ) At a process flow rate at 130 m3/h. Power consumption increases with the flow rate.2 ) The bowl should be filled at start, stop and normal operation. In case process liquid is not available, safety water should be used. The figures above refer to nozzle sizes from 1.45 to 2.0 mm and max. bowl speed. The safety water fed to the separator should always exceed the nozzle flow by 10 %.

Material data

Bowl body, hood and lock ring s.s. 1.4501 UNS 32760

Solids cover and frame hood s.s. 1.4401 UNS 31600

Frame bottom part grey cast iron

In and outlet parts s.s. 1.4401 UNS 31600

Gaskets and O-rings Fluorocarbon rubber

Connections

Feed 3½” flange ANSI

Oil outlet 3½” flange ANSI

Water outlet 2” alt. 3” flange ANSI (3” for pressurised vers.)

Solids outlet 6” flange ANSI

2345 mm (7 ft 8 / inch)1 4

Min

.315

5m

m(1

0ft

4/

inch

)1

4

2496

mm

(8ft

2/

inch

)1

4

1532 mm (5 ft / inch)1 4

Dimensions

Shipping data (approximate)

Centrifuge incl. bowl and motor 4,580 kg (10,100 lbs)

Bowl 1,050 kg (2,350 lbs)

Motor 1,180 kg (2,600 lbs)

Gross weight 4,900 kg (10,800 lbs)

Volume 8.0 m3

Skid-mounted centrifuge for heavy crude oil dehydration

X20

Centrifugal dehydration of heavy crude oilThe Alfa Laval X20 centrifuge is a purpose-built, high-capacity process centrifuge. The design is an evolutionary develop-ment of the highly reliable Alfa Laval nozzle bowl disc stack centrifuge, which has been used for synthetic crude oil dehy-dration in Canada since 1978.

The X20 centrifuge is mounted on an offshore skid, com-plete with process and utility piping, instruments, valves and controls to form a functional process system. The system is suitable for use in hazardous areas on a Floating Production Storage and Offloading (FPSO) facility.

The X20 centrifuge can treat crude oils with an API down to 11.5. It can deal with considerable variations in feed compo-sition and constantly obtain a pipeline specification oil quality. The need for demulsifiers and heat is greatly reduced com-pared with conventional technology.

Features and benefits• Robust, compact design with automatic operation• Easy maintenance, in which the bowl and bearing parts can

be removed as a complete assembly on site• The patented OPTIPHASER™ automatic oil/water interface

system for rapid, easy on-line optimization of the separationprocess

• The patented OPTIFLOW™ inlet device for minimal dropletsplitting of the feed

• Can easily be rebuilt for produced water de-oiling service• The skid is built in accordance with Zone 1/Class 1 Div 1

specifications and complies with the ATEX regulations Zone1 and 2.

The X20 can process up to 25,000 bpd (2,750 US gpm, 170 m3/h) of heavy crude oil with water content between 0 and 50%.

The OPTIPHASER™The X20 centrifuge is delivered equipped with the OPTIPHASER™, a patented feature that ensures optimal separation and minimal oil losses to the water phase.

The OPTIPHASER™ balances the feed with sufficient water to obtain optimal separation and makes it possible to accept up to 50% water cut in the feed, at flow rates from zero to full flow.

The OPTIPHASER™ also enables the operator to optimize process performance during operation.

Basic equipment• A complete skid with the X20 centrifuge, drive motor,

sample points, instrumentation and an operator panel• Control and starter panel for safe area location• Process and utility piping with flanged skid-edge process

connections in accordance with ASME B16.5

Optional equipment• COSMOS™ condition monitoring system• Nozzle monitoring system• Movable Cleaning-In-Place (CIP) unit• Inert gas blanketing package mounted on skid• Explosion proof control and starter panel mounted on skid

Main flow of X20.

Technical dataSkid length inch (mm) 130 (3,300)Skid width inch (mm) 118 (3,000)Skid height inch (mm) 130 (3,300)Dry weight lbs (kg) 17,300 (7,850)Operating weight lbs (kg) 18,100 (8,235)

Sound pressure level 1) dB(A) 821) In compliance with ISO 3746.


Motor power installed hp (kW) 200 (150)

Back-up water gpm (m3/h) 130 (30)

Instrument air gpm (Nl/h) 0.1 (30)

Nitrogen (with inert gas blanketing option) gpm (Nl/h) 0.8 (180)

• Enhanced erosion resistance• Enhanced corrosion resistance• Conversion kit for re-building into produced water de-oiling

service.

Тарельчатаяцентрифугасреднеймощностидляочисткимаселижиров

PX 55

Модельный ряд центрифуг компании Альфа Лаваль для промышленной очистки растительных масел и живот-ных жиров непрерывно совершенствуется. Процесс модернизации идет с учетом последних достижений в материаловедении, конструировании механических устройств и динамике жидкостей. PX 55 – средняя по величине центрифуга в модельном ряду Альфа Лаваль.

ОбластьпримененияНепрерывная гидратация, нейтрализация, винтеризация и промывка нелетучих жидких масел, таких как растительные масла, полутвердых жиров, твердых жиров и рыбьего жира.

РабочиехарактеристикиВ приведенной ниже таблице указана номинальная производительность. Фактическая производительность изменяется в зависимости от типа обрабатываемого масла и жира.

Гидратация, нейтрализация, промывка 6250 кг/час

Винтеризация (удаление восков) 3000 кг/час

СтандартнаяконструкцияЦентрифуга представляет собой корпус на основании, который содержит вал горизонтального привода, червячную передачу, ванну смазочного масла и полый шпиндель вер-тикального барабана. Барабан закреплен в верхней части шпинделя, внутри пространства, образуемого верхней час-тью корпуса, крышкой сбора твердых частиц и колпаком кор-пуса. На колпаке установлена система выпуска жидкости. Все детали, которые находятся в контакте с технологичес-кой жидкостью, изготовлены из нержавеющей стали. Барабан тарельчатого типа для извлечения твердых частиц, с автоматически действующей гидравлической системой для “взрывного воздействия”. Для привода с переменной частотой используется стандартный электродвигатель.

КонструктивныеособенностиPX 55 разработан на основе уникальной полугерметичес-кой концепции. Герметичный впуск, расположенный на дне, гарантирует бережное, неразрушающее ускорение исход-ного сырья до достижения полной скорости барабана. Площадь сечения потока для исходного сырья была увели-чена, чтобы минимизировать падение давления на входе. Выпускные отверстия для тяжелых и легких фракций открыты, что уменьшает перепад давления. Поэтому требования к поддержанию давления внутри механизма

PX 55 комплектуется двигателем

достаточно низкие. Выпускные отверстия оборудова-ны неподвижными напорными дисками для удаления различных фракций. Напорный диск для легкой фракции фиксирован, в то время как напорные трубки для тяжелой фракции могут регулироваться. Регулируя устройство позиционирования на выпуске тяжелой фракции, оператор может уменьшать или увели-чивать диаметр напорных трубок. Это запатентованное нововведение позволяет регулировать положение повер-хности раздела сепарации в течение работы, что обеспе-чивает оптимальный процесс разделения. PX 55 функционирует с низким уровнем шума. Это достига-ется благодаря применению амортизированного резиной подшипникового узла, заключенного в кожух рамы, и конс-трукции внешней поверхности барабана, спроектированной с учетом низких значений ветрового шума.

СтандартноеоборудованиеКаждая центрифуга PX 55 поставляется с блоком управ-ления, электродвигателем, входными и выпускными пат-рубками, вспомогательным оборудованием, комплектом запасных частей и комплектом инструментов.

ПринципыработыМасло, которое должно подвергнуться сепарации, пода-ется (1) в барабан сепаратора снизу через полый шпин-дель (2) и попадает в пакет тарелок (3). Тяжелая фракция и тяжелый осадок смещаются к периферии барабана, в то время как легкая фракция течет к центру барабана, откуда она выпускается (4) для дальнейшей обработки. Тяжелая фракция перемещается по верхнему диску (5) в камеру, в которой регулируемое напорное устройство выкачивает ее из сепаратора (6). Осадок собирается в пространстве для осадка (7) и периодически автома-тически выпускается. Процесс выпуска осуществляется с помощью гидравлической системы, которая через предварительно установленные интервалы времени заставляет опускаться скользящее днище барабана (8), открывая, таким образом, отверстия для выгрузки осадка на периферии барабана. Осадок собирается в основании и выходит из центрифуги через циклон.

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8

2

Чертеж барабана герметичной центрифуги для извлечения твердых частиц. Детали чертежа не обязательно соответствуют описанной центрифуге.

Расходэнергииирабочихсред

Электроэнергия макс. 16 кВт

Рабочая жидкость, только в процессе выпуска 5 л/ч / 5 л

Охлаждающая вода, рубашка 150 л/ч

Охлаждающая вода, масло 120 л/ч

Уплотняющая жидкость: 80 л/ч

Жидкость для промывки, на один выпуск 30 л

Техническиехарактеристики

Пропускная способность макс. 13 м3/ч

Скорость барабана 6 240 об/мин

Объем барабана 15 л

Пространство для отстоя 4,6 л

Частота вращения двигателя, 1 800 об/мин синхронная 60 Гц

Установленная мощность двигателя 18,5 кВт

Время разгона 6 минут

Время остановки без торможения 16 минут

Давление на входе 0 кПа при пропускной способности 10 м3/ч

Давление на выходе, масло макс. 500 кПа

Давление на выходе, тяжелая фракция 0 кПа

Уровень звукового давления 74 дБ (A)

Грузоподъемность лебедки мин. 900 кг для подъема частей установки

Данныепоматериалам

Корпус барабана, крышка нерж. сталь и стопорное кольцо 1.4462 UNS

Верхняя часть корпуса и колпак нерж. сталь 1.4401 UNS 31600

Нижняя часть корпуса серый чугун, плакированный нерж. сталью 1.4301 UNS 30400

Прокладки и уплотнительные кольца нитриловая резина

Данныедлятранспортировки (приблизительные)

Сепаратор, включая барабан и двигатель 1 351 кг

Барабан 310 кг

Полный вес 1 750 кг

Объем 5 м3

Габаритныеразмеры

Min

. 286

5m

m17

05m

m

980

mm

1620 mm

Medium-capacity disc stack centrifuge for fats and oils refining

PX 65 & PX 65EX

The Alfa Laval range of centrifuges for the vegetable oil and animal fat refining industries is continuously modernized to take advantage of developments in materials, mechanical design and fluid dynamics. The PX 65/65EX is a medium-sized machine in this range of centrifuges.

ApplicationsContinuous degumming, neutralizing, dewaxing and washing of fatty oils, such as vegetable oils, lard, tallow and fish oil.

PerformanceThe table below shows nominal capacities. Actual through- puts vary according to the type of oil and fat to be treated.

Degumming, neutralization, washing 10,500 kg/h

Dewaxing 6,250 kg/h

Standard designThe machine consists of a frame with a base that contains a horizontal drive shaft, worm gear, lubricating oil bath and hollow vertical bowl spindle. The bowl is fixed on top of the spindle, inside the space formed by the upper part of the frame, the solids collecting cover and the frame hood. The hood carries the liquid discharge system. All parts in contact with the process liquid are made of stain-less steel. The bowl is of the solids ejecting disc type, with an automatic hydraulic operating system for intermittent solids discharge. The standard electric motor is suitable for variable frequency drive.

Design featuresThe PX 65/65EX is based on a unique, semi-hermetic design concept. The hermetic, bottom-fed inlet ensures a gentle, non-destructive acceleration of the feedstock up to full bowl speed. The flow area for the feedstock is designed to minimize inlet pressure drop. The outlets on the heavy and light phases are open, reducing the pressure drop across the separator. The feed-pressure requirement of the machine is therefore low. The outlets are equipped with stationary paring devices for removal of the different phases. The paring disc on the light phase is fixed, while the paring tubes on the heavy phase are adjustable.

PX 65 complete with motor

By adjusting a positioner on the heavy phase outlet, the operator can reduce or enlarge the paring diameter of the paring tubes. This patented innovation makes it possible to adjust the position of the separation interface during opera-tion, facilitating optimal separation. With the working environment in mind, the PX 65/65EX is designed to operate at low noise levels. This is achieved by means of a rubber-damped bearing assembly, jacketed frame and an outer bowl design, which is engineered for low wind noise.

Basic executionsPX 65 for non-explosive environments. PX 65EX for ATEX zone 2.

Standard equipmentEach PX 65/65EX comes complete with control unit, electric motor, inlet and outlet connections, auxiliary equipment, a spare parts kit and a set of tools.

Operating principlesThe oil to be separated is fed (1) into the separator bowl from the bottom through a hollow spindle (2) and enters the disc stack (3). The heavy phase and heavy sludge are forced towards the periphery of the bowl, while the light phase flows towards the centre of the bowl, from where it is pumped out (4) for further processing. The heavy phase is led over a top disc (5) into a chamber where an adjustable paring device pumps it out of the separator (6). Sludge collects in the sludge space (7) and is discharged intermittently and automatically. The discharge is achieved by a hydraulic system, which at preset suitable intervals forces the sliding bowl bottom (8) to drop down, thus opening the sludge ports at the bowl periphery. The sludge is collected in the frame and leaves the centrifuge via a cyclone.

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3

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6

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8

2

Typical bowl drawing for solids ejecting hermetic centrifuge. Drawing details do not necessarily correspond to the centrifuge described.


Throughput capacity max. 15 m3/h (66 US gpm)

Bowl speed, synchronous 7,450 rpm

Bowl volume 15 l (3.97 US gal)

Sludge space 4.6 l (1.2 US gal)

Motor power installed 25 kW (33.5 HP)

Inlet pressure at 15 m3/h (66 US gpm) 0 kPa

Sound pressure level 76 dB (A)

Overhead hoist lifting capacity min. 900 kg (1,984 lbs)

Material data

Bowl body, hood and lock ring s.s. 1.4418 UNS

Frame top part and hood s.s. 1.4401 UNS S31600

Frame bottom part Cast iron, clad with s.s. 1.4301 UNS 30400

Gaskets and O-rings Nitrile rubber


Separator incl. bowl and motor 1,425 kg (3,140 lbs)

Bowl 310 kg (685 lbs)


Volume 5 m3 (177 cft)

Dimensions

Min

. 286

5m

m(9

ft4

6/8

inch

)17

05m

m(5

ft7

1/8

inch

)

1616 mm (5 ft 3 5/8 inch)1227 mm (4 ft 2/8 inch)

ATEX design codes

EX II 3 G T4 X for zone 2

High-capacity disc stack centrifuge for fats & oil refining

PX 100 & PX 100EX

The Alfa Laval range of centrifuges for the vegetable oil and animal fat refining industries is continuously modernized to take advantage of developments in materials, mechanical design and fluid dynamics. The PX 100/100EX is a large-sized machine in this range of centrifuges.

ApplicationsContinuous degumming, neutralizing, dewaxing, and washing of fatty oils, such as various vegetable oils, lard, tallow, and fish oil.

PerformanceThe table below shows nominal capacities. Actual throughputs vary according to the type of oil and fat to be treated.

Standard designThe machine consists of a frame with a base that containes a horizontal drive shaft, worm gear, lubricating oil bath and the hollow vertical bowl spindle. The bowl is fixed on top of the spindle inside the space formed by the upper part of the frame, the solids collecting cover and the frame hood. The hood carries the liquid discharge system. All parts in contact with the process liquid are made of stainless steel. The bowl is of the solids-ejecting type with an automatic hydraulic operating system for intermittent solids discharge. The standard electric motor is suitable for variable frequency drive.

Design featuresThe PX 100/100EX is based on a unique, semi-hermetic design concept. The hermetic, bottom-fed inlet ensures a gentle, non-destructive acceleration of the feedstock up to full bowl speed. The flow area for the feedstock is designed to minimize inlet pressure drop. The outlets on the heavy and light phases are open, reducing the pressure drop across the separator. The feed-pressure requirement of the machine is therefore low. The outlets are equipped with stationary paring devices for removal of the different phases. The paring disc on the light phases is fixed, while the paring tubes on the heavy phase are adjustable.


By adjusting a positioner on the heavy-phase outlet, the oper-ator can reduce or extend the paring diameter of the paring tubes. This patented innovation makes it possible to adjust the flow rate of the heavy phase during operation, facilitating optimal separation.With the working environment in mind, the PX 100/100EX is designed to operate at low noise levels. This is achieved through a rubber-damped bearing assembly, jacketed frame and an outer bowl design, which is engineered for low wind noise.


Standard equipmentEach PX 100/100EX comes complete with control unit, electric motor, inlet and outlet connections, auxiliary equipment, a spare parts kit and set of tools.


Dewaxing 17,000 kg/h

Operating principlesThe oil to be separated is fed (1) into the separator bowl from the bottom through a hollow spindle (2) and enters the disc stack (3). The heavy phase and heavy sludge are forced towards the periphery of the bowl, while the light phase flows towards the centre of the bowl, from where it is pumped out (4) for further processing. The heavy phase is led over a top disc (5) into a chamber where an adjustable paring device pumps it out of the separator (6). Sludge collects in the sludge space (7) and is discharged intermittently and automatically. The discharge is achieved by a hydraulic system which at preset suitable intervals forces the sliding bowl bottom (8) to drop down, thus opening the sludge ports at the bowl periphery. The sludge is collected in the frame and leaves the centrifuge via a cyclone.

Material data

Bowl body, hood and lock ring s.s. 1.4418

Frame top part and hood s.s. 1.4401 UNS 31600

Frame bottom part Cast iron clad with stainless steel 1.4301 UNS 30400


Technical specificationsThroughput capacity max. 45 m3/h (200 US gpm)


Bowl volume 72 l (19 US gal)

Sludge space 17 l (4.5 US gal)

Motor power installed max. 37 kW (50 HP)


Sound pressure 78 dB(A)

Overhead hoist lifting capacity min. 1,200 kg (2,700 lbs)

5

3

7

82 1

64

6

Typical bowl drawing for a solids ejecting hermetic centrifuge. Drawing details do not necessarily correspond to the centrifuge described.

1326 mm (4 ft 4 2/8 inch)

1999

mm

(6ft

66/

8in

ch)

1730 mm (5 ft 8 1/8 inch)

Min

.286

5m

m(9

ft4

6/8

inch

)

ATEX design codes




Bowl 1,160 kg (2,600 lbs)


Volume 5.4 m3 (190 cuft)

Dimensions


PX 55 & PX 55EX


ApplicationsContinuous degumming, neutralizing, dewaxing and washing of fatty oils, such as vegetable oils, lard, tallow and fish oil.

PerformanceThe table below shows nominal capacities. Actual through- puts vary according to the type of oil and fat to be treated.

Degumming, neutralizing, washing 6,250 kg/h

Dewaxing 3,000 kg/h

Standard designThe machine consists of a frame with a base that contains a horizontal drive shaft, worm gear, lubricating oil bath and hollow vertical bowl spindle. The bowl is fixed on top of the spindle, inside the space formed by the upper part of the frame, the solids collecting cover and the frame hood. The hood carries the liquid discharge system. All parts in contact with the process liquid are made of stain-less steel. The bowl is of the solids ejecting disc type, with an automatic hydraulic operating system for intermittent solids discharge. The standard electric motor is suitable for variable frequency drive.

Design featuresThe PX 55/55EX is based on a unique, semi-hermetic design concept. The hermetic, bottom-fed inlet ensures a gentle, non-destructive acceleration of the feedstock up to full bowl-speed. The flow area for the feedstock is designed to minimize inlet pressure drop. The outlets on the heavy and light phases are open, reducing the pressure drop across the separator. The feed pressure requirement of the machine is therefore low. The outlets are equipped with stationary paring devices for removal of the different phases. The paring disc on the light phase is fixed, while the paring tubes on the heavy phase are adjustable.






1

5

3

64

6

7

8

2




Bowl speed, synchronous 6,240 rpm


Sludge space 4.6 l (1.2 US gal)

Motor power installed 18.5 kW (25 HP)



Overhead hoist lifting capacity min. 900 kg (1,984 lbs)

Material data

Bowl body, hood and lock ring s.s. 1.4418 UNS






Bowl 310 kg (685 lbs)


Volume 5 m3 (177 cft)

Dimensions

Min

. 286

5m

m(9

ft4

6/8

inch

)

1705

mm

(5ft

71/

8in

ch)

1727 mm (5 ft 8 inch)1227 mm (4 ft 2/8 inch)

ATEX design codes



PX 70 & PX 70EX


ApplicationsContinuous degumming, neutralizing, dewaxing, and washing of fatty oils, such as vegetable oils, lard, tallow and fish oil.

PerformanceThe table below shows nominal capacities. Actual through-puts vary according to the type of oil and fat to be treated.


Dewaxing 8,000 kg/h

Standard designThe machine consists of a frame with a base that contains a horizontal drive shaft, worm gear, lubricating oil bath, and hollow vertical bowl spindle. The bowl is fixed on top of the spindle, inside the space formed by the upper part of the frame, the solids collecting cover and the frame hood. The hood carries the liquid discharge system. All parts in contact with the process liquid are made of stain-less steel. The bowl is of the solids ejecting disc type, with an automatic hydraulic operating system for intermittent solids discharge. The standard electric motor is suitable for variable frequency drive.

Design featuresThe PX 70/70EX is based on a unique, semi-hermetic design concept. The hermetic, bottom-fed inlet ensures a gentle, non-destructive acceleration of the feedstock up to full bowl speed. The flow area for the feedstock is designed to minimize inlet pressure drop. The outlets on the heavy and light phases are open, reducing the pressure drop across the separator. The feed pressure requirement of the machine is therefore low. The outlets are equipped with stationary paring devices for removal of the different phases. The paring disc on the light phase is fixed, while the paring tubes on the heavy phase are adjustable.



Basic executionsPX 70 for non-explosive environment. PX 70EX for ATEX zone 2.



3

1

5

64

6

7

82







Motor power installed 30 kW (40 HP)




Material data







Bowl 530 kg (1,166 lbs)


Volume 5.2 m3 (184 cft)

Dimensions

Min

. 215

2m

m(7

ft6/

8in

ch)

1954

mm

(6ft

47/

8in

ch)

1726 mm 5 ft 8 inch)1191 mm (3 ft 10 7/8 inch)

ATEX design codes



PX 80 & PX 80EX


ApplicationsContinuous degumming, neutralizing, dewaxing, and washing of fatty oils, such as vegetable oils, lard, tallow and fish oil.

PerformanceThe table below shows nominal capacities. Actual through-puts vary according to the type of oil and fat to be treated.


Dewaxing 8,000 kg/h

Standard designThe machine consists of a frame with a base that contains a horizontal drive shaft, worm gear, lubricating oil bath, and hollow vertical bowl spindle. The bowl is fixed on top of the spindle, inside the space formed by the upper part of the frame, the solids collecting cover and the frame hood. The hood carries the liquid discharge system. All parts in contact with the process liquid are made of stain-less steel. The bowl is of the solids ejecting disc type, with an automatic hydraulic operating system for intermittent solids discharge. The standard electric motor is suitable for variable frequency drive.

Design featuresThe PX 80/80EX is based on a unique, semi-hermetic design concept. The hermetic, bottom-fed inlet ensures a gentle, non-destructive acceleration of the feedstock up to full bowl speed. The flow area for the feedstock is designed to minimize inlet pressure drop. The outlets on the heavy and light phases are open, reducing the pressure drop across the separator. The feed pressure requirement of the machine is therefore low. The outlets are equipped with stationary paring devices for removal of the different phases. The paring disc on the light phase is fixed, while the paring tubes on the heavy phase are adjustable.



Basic executionsPX 80 for non-explosive environment. PX 80EX for ATEX zone 2.



3

1

5

64

6

7

82







Motor power installed 30 kW (40HP)




Material data







Bowl 530 kg (1,166 lbs)



Dimensions

Min

. 215

2m

m(7

ft6/

8in

ch)

1954

mm

(6ft

47/

8in

ch)

1726 mm 5 ft 8 inch)1191 mm (3 ft 10 7/8 inch)

ATEX design codes


Высокопроизводительная тарельчатая центрифуга для очистки масел и жиров

РХ 100 и PX 100ЕХ

Модельный ряд центрифуг компании Альфа Лаваль для промышленной очистки растительных и животных жиров непрерывно совершенствуется. Процесс модернизации идет с учетом последних достижений в материаловеде-нии, конструировании механических устройств и динамике жидкостей. РХ 100 – вторая по величине центрифугав модельном ряду Альфа Лаваль.

Область примененияНепрерывная гидратация, нейтрализация, удаление восков и промывка жидких масел, таких как растительные масла, полутвердых жиров, рыбьего и животных жиров.

Рабочие характеристикиВ приведенной ниже таблице указана номинальная произ-водительность. Фактическая производительность изме-няется в зависимости от типа обрабатываемого маслаи жира.

Гидратация, нейтрализация, промывка 34 000 кг/часУдаление восков 17 000 кг/час

Описание конструкцииЦентрифуга представляет собой раму на основании, кото-рая в свою очередь состоит из вала горизонтального при-вода, червячной передачи, картера червячной передачи и полого шпинделя вертикального барабана. Барабан уста-новлен на верхней части шпинделя, внутри пространства, образуемого верхней частью рамы, камерой сбора твердых частиц и колпаком рамы. На верхней части колпака уста-новлены выпускные устройства тяжелой и легкой фаз. Все детали, которые находятся в контакте с технологической жидкостью, изготовлены из нержавеющей стали. Барабан тарельчатого типа оснащен автоматической системой с гидравлическим приводом для периодической выгрузки твердого шлама. На раме установлен электродви-гатель, который управляется частотным преобразователем.

Конструктивные особенностиЗа основу при разработке РХ 100/100ЕХ была принята уникальная полугерметичная концепция. Герметичный нижний впуск жидкости обеспечивает бережное, неразру-шающее структуру ускорение исходного сырья до полной скорости вращения барабана. Площадь сечения впускного устройства рассчитана таким образом, чтобы минимизировать падение давле-ния на входе. Выпускные устройства тяжелой и легкой фаз открытого типа для минимизации потери давления в сепараторе. Поэтому требования к давлению подачи сырья достаточно низкие. Выпускные устройства обору-дованы неподвижными напорными дисками, служащими для откачки соответствующих фракций. Напорный диск для легкой фракции имеет фиксированный диаметр, в то время как положение напорных трубок тяжелой фракции может изменяться посредством управления устройством

РХ 95 в комплекте с электродвигателем

позиционирования на выпуске тяжелой фракции, опе-ратор может вдвигать или выдвигать трубки, тем самым изменяя рабочий диаметр напорного устройства. Это запатентованное нововведение позволяет регулировать положение поверхности раздела сепарации во время работы, что обеспечивает оптимальный процесс разде-ления. Принимая во внимание возрастающие требования к защите рабочих мест от воздействия неблагоприятных факторов, сепаратор РХ 100/100ЕХ спроектирован для работы с пониженным уровнем шума. Это достигается благодаря применению амортизированного резиной под-шипникового узла, заключенного в кожух рамы, а также конструкции внешней поверхности барабана, спроектиро-ванной для достижения низких значений шума.

Стандартное исполнениеРХ 100 для взрывобезопасных производственных объектов.РХ 100ЕХ для взрывоопасных производственных объектов (АТЕХ зона 2).

Стандартное оборудованиеКаждая центрифуга РХ 95 поставляется с блоком управления, электродвигателем, входными и выпускными патрубками, вспомогательным оборудованием, комплектом запасных частей и комплектом инструментов.

Принципы работыМасло, предназначенное для разделения, подается (1) в барабан сепаратора снизу через полый шпиндель (2) и попадает в пакет тарелок (3). Тяжелая фракция и твердый осадок смещаются к периферии барабана, в то время как легкая фракция перемещается к центру барабана, откуда она выкачивается (4) из сепаратора для дальнейшей обра-ботки.

Тяжелая фракция перемещается по верхнему диску (5) в камеру, в которой регулируемое напорное устройство выкачивает ее из сепаратора (6).

Осадок собирается в шламовом пространстве (7) и пери-одически автоматически выгружается. Процесс выгрузки осуществляется с помощью гидравлической системы, которая через предварительно установленные интервалы времени опускает подвижное днище барабана (8), откры-вая, таким образом, отверстия для выгрузки осадка на периферии барабана. Осадок собирается в раме и выгру-жается из сепаратора через циклон.

Данные по материалам

Корпус барабана, крышкаи затяжное кольцо

нерж. сталь 1,4418 UNS

Верхняя часть рамыи колпак

нерж. сталь 1,4401 UNS 31600

Нижняя часть рамы серый чугун, плакирован-ный нерж. сталью 1,4301 UNS 30400

Прокладки и уплотнитель-ные кольца

нитриловая резина

Технические характеристики

Пропускная способность макс. 45 м3/ч

Скорость барабана 4 300 об/мин

Объем барабана 72 л

Шламовое пространство 17л

Мощность электродвигателя 37 кВт

Давление на входе припропускной способности 38 м3/ч

0 кПа

Уровень звукового давления 78 дБ (А)

Грузоподъемность лебедкидля подъема частей установки

мин. 1 200 кг

5

3

7

8

2 1

6

4

6

Схема устройства стандартного барабана саморазгружающегося герметичного сепаратора. Особенности конструкции отдельных узлов барабана описанной в настоящей брошюре модели сепара-тора могут отличаться от стандартной схемы.

1326 мм (4 фт 4 2/8 дм.) 1730 мм (5 фт 8 1/8 дм.)

Мин

. 286

5 м

м

1999

мм

Кодировка исполнения для взрывоопасной зоны (АТЕХ)EX II 3 G T4 X для зоны 2 класса

Габаритные размерыСепаратор, вкл. барабан 2,800 кги электродвигательБарабан 1,160 кгВес брутто 3,200 кгОбъем 5,4 м3

Version: 0

Deck drains treatment offshoreThe Phoenix System in short

The modular Alfa Laval Phoenix system enables owners or operators of virtually any type of drilling rig or offshore service vessel to boost the company’s environmental profile as well as achieve significant reductions in operating costs for water treatment and disposal.

New solution to old problems Offshore rigs and production platforms – as well as other installations and vessels used in the oil and gas industry – operate with complex mixtures of oil, water and solids, often in large volumes.

These drains have to be treated so the water rejected overboard complies with stringent environmental legislation, including Inter-national Maritime Organization (IMO) standards. A treatment onshore requires costly transport and storage tanks that take up precious space on the rigs.

Variations in waste streams These complex streams of contaminated water vary considerably in composition and physical properties. However, they almost always contain both hydrocarbon residues and solid particles – ranging from coarse to extremely fine. These mixtures are often in the form of complex emulsions that are difficult for traditional separation systems to tackle.

Treatment at source - the benefits The Alfa Laval Phoenix system means • One single system for treating all kinds

of contaminated water.• Ideal combination of mechanical and

chemical separation technologies.• Much less need for onboard storage,

thus saving on space.

• Low overall processing costs.• Reduced costs for transporting

contaminated water to shore.• Compliance with requirements in the

IMO Res. MEPC.107(49), ensuring animproved environmental profile.

The result is an extremely versatile, modular process solution whose elements can be combined to meet many different needs. This ensures that you are able to efficiently treat all kinds of oily, contaminated water from your offshore oil and gas operations.

The modular advantage The Alfa Laval Phoenix system features three blocks (including the oil-in-water monitor), each designed to remove specific contaminants from the water streams in order to tackle the different separation requirements.

Deck drains treatment offshore The Phoenix System in short

Each stage can be used to prepare these flows for subsequent treatment. They can also be combined as required to meet many different processing conditions, as well as space constraints and other practical con-siderations on board.

The Phoenix system tackles flows of con-taminated water where as much as 20% of the volume consists of solids, even if these particles are coarse and abrasive.

Space availability The three modules of the Phoenix system can be mounted together on one single skid or on separate skids to be installed in different rooms. The equipment can be placed in hazardous as well as in safe areas.

Sources for waste water Offshore oil and gas installations normally require contaminated water treatment sys-tems in conjunction with four main streams:

• Bilge water: it is the contaminated watercollected in engine rooms and machineryspaces. This can contain some smallamount of fuel oil or lube oil, some dust,some rust. This stream is relatively easyto separate.

• Open deck drain: the origin of this drainis coming from the melted snow or fromthe rain water collected on the helideckor on the main deck. This can also be thewater used to wash the deck. It is easy tofigure out the oil content and solids con-centration would be small in this drain.So it is also relatively easy to separate.

• Tank wash drain: the tanks collecting thedifferent drilling muds need sometimes tobe cleaned completely. The washingwater needs to be treated then. This

drain is much more difficult to separate than the first two ones because it usually contains a lot of solids and strong emulsions.

• Drill floor drain: oil spillage containingvarious types of solids in differentconcentrations, strong emulsions whichmake the separation very difficult.

Combined forces - maximum effect Alfa Laval has several decades of experience with operating different kinds of treatment systems for contaminated water, often under the most demanding offshore conditions in the world – including the North Sea. This has all paved the way for the implementation of the Alfa Laval Phoenix system as the most efficient and cost-effective solution for the treatment of oily, contaminated water in offshore oil and gas facilities, as well as aboard vessels of all types.

Technical details Empty weight of the Phoenix system: 10.8 tonnes (incl. tanks, skids, equipment, pumps, control panel, pipes)

Size of the Phoenix system (each system is designed to fit in the space available):

• Footprint: 20 m2 (24 sq yards)• Height: 3.5 m (around 11ft)

High-capacity disc stack centrifuge for fats & oil refining

PX 115 & PX 115EX

The Alfa Laval range of centrifuges for the vegetable oil and animal fat refining industries is continuously modernized to take advantage of developments in materials, mechanical design and fluid dynamics. The PX 115/115EX is a large-sized machine in this range of centrifuges.



Standard designThe machine consists of a frame with a base that contains a horizontal drive shaft, worm gear, lubricating oil bath and the hollow vertical bowl spindle. The bowl is fixed on top of the spindle inside the space formed by the upper part of the frame, the solids collecting cover and the frame hood. The hood carries the liquid discharge system. All parts in contact with the process liquid are made of stainless steel. The bowl is of the solids-ejecting type with an automatic hydraulic operating system for intermittent solids discharge. The standard electric motor is suitable for variable frequency drive.

Design featuresThe PX 115/115EX is based on a unique, semi-hermetic design concept. The hermetic, bottom-fed inlet ensures a gentle, non-destructive acceleration of the feedstock up to full bowl speed. The flow area for the feedstock is designed to minimize inlet pressure drop. The outlets on the heavy and light phases are open, reducing the pressure drop across the separator. The feed pressure requirement of the machine is therefore low. The outlets are equipped with stationary paring devices for removal of the different phases. The paring disc on the light phases is fixed, while the paring tubes on the heavy phase are adjustable.


By adjusting a positioner on the heavy-phase outlet, the oper-ator can reduce or extend the paring diameter of the paring tubes. This patented innovation makes it possible to adjust the flow rate of the heavy phase during operation, facilitating optimal separation. With the working environment in mind, the PX 115/115EX is designed to operate at low noise levels. This is achieved through a rubber-damped bearing assembly, jacketed frame and an outer bowl design, which is engineered for low wind noise.


Standard equipmentEach PX 115/115EX comes complete with control unit, electric motor, inlet and outlet connections, auxiliary equipment, a spare parts kit and set of tools.




Material data



Frame bottom part Cast iron clad with stainless steel 1.4301 UNS 30400










5

3

7

82 1

64

6


ATEX design codes




Bowl 1,160 kg (2,600 lbs)



Dimensions

1326 mm (4 ft 4 2/8 inch)

1999

mm

(6ft

66/

8in

ch)

1730 mm (5 ft 8 1/8 inch)

Min

.286

5m

m(9

ft4

6/8

inch

)

For produced water de-oiling

X20

The Alfa Laval X20, model OFSX 520S-71CEGPX, is a high capacity concentrator designed for de-oiling of produced water. The design is based on the robust nozzle-type disc bowl centrifuge in order to withstand the demanding condi-tions in the oil-producing industry. The machine is in compli-ance with the EC ATEX directive category 2, and therefore Zones 1 and 2. As an option, the machine can be operated under a positive pressure of 400 kPa, as it has an ASME-approved pressure casing. The X20 concentrator is one machine in the X20 family, which also consists of machines for applications such as heavy crude and tar sand dehydration.

ApplicationsThe X20 concentrator is designed to reduce the oil content to 15 ppm or lower in produced water. Using a centrifuge for this application is especially suitable for:

- heavy crude oil facilities - gas production facilities with associated condensate - deepwater offshore facilities including floating platforms

The compact design makes it especially useful for offshore processing, including at floating platforms where the sea heave may cause problems for conventional technology

X20 concentrator complete with skid.

Standard designSeparation takes place in the bowl, which is placed on a vertical spindle. An electric motor mounted vertically drives the spindle near the bottom via a flat belt. Circulating oil ensures that the bearings are lubricated. An external lube oil pump maintains the necessary pressure. The centrifuge motor is designed for variable frequency drive.

All metallic parts that come into contact with the process liquid are made of high-grade stainless steel. Liquid-wetted gaskets are made of fluorocarbon rubber.

To recover energy from the discharged nozzle flow, the noz-zles are placed in the bowl periphery at a narrow angle from the tangent. The eighteen nozzles can be reached from the outside via a hatch in the frame hood, which allows techni-cians to replace them easily and rapidly without dismantling the frame. The nozzles are made of tungsten carbide, suitable for abrasive solids. The solids collecting ring is fitted with a wear liner made from polyurethane.

The inlet and outlets are fitted with ANSI flanges. A rotating face seal seals off the bowl casing from the bearings. A cover interlocking kit makes it impossible to start the centrifuge unless it is properly assembled.

1

5

23

4

Special featuresThe atmospheric version of the X20 concentrator is fitted with a power recovery device on the water outlet. The pressurised version OFSX 520T-71CEGPX has a paring disc, which elimi-nates the need for an external water pump.

Basic equipmentCentrifuge with motor, set of tools, speed and vibration sen-sors, oil pressure switch, temperature sensors for the main spindle bearing and the motor winding, vibration dampening feet, foundation plate and standard set of spares.

OptionsThe X20 concentrator can be fitted with a nozzle monitor. This consists of a sensing device, which is hit by the jet from each individual nozzle. The signal is then transmitted to a box, which displays the result. The monitor shows whether the nozzles are clogged or worn out, therefore enabling safe operation and high availability. The machine can be supplied with a pressurised bowl casing, design pressure 400 kPag. The separated water leaves the centrifuge under pressure. It is usually supplied as a functioning unit with a process liquid module, starter and controls. In cases where flammable liquids are processed, an inert gas system is provided with controls integrated in the machine controls.

Operating principlesThe feed containing the liquids and the solids is introduced to the rotating centrifuge bowl from the top via a stationary inlet pipe (1), and is accelerated in a distributor (2) before entering the disc stack (3). Separation takes place between the discs. The water phase moves towards the periphery, the surplus water is collected in pipes leading towards the centre into a chamber, through the bowl bottom over a gravity ring into the collecting cover, from which it flows out under gravity. This is valid for the atmospheric version. In the pressurised version, the water leaves the centrifuge under pressure by means of a built-in paring disc. The oil droplets move through the disc stack to the oil/water interface, where they coalesce to form a continuous oil phase that overflows into a chamber and which is pumped out under pressure by means of a built-in paring disc (4). Filler pieces (5) prevent build-up of the solids between the nozzles.

Typical bowl drawing for a nozzle centrifuge for three phase separa-tion with power recovery device (right hand side) and paring device (left hand side) for the water outlet. Drawing details do not necessarily correspond to the centrifuge described.


Throughput capacity max. 190 m3/h (840 US gpm) 1)

Water flow max. 180 m3/h (800 US gpm)

Oil flow max. 10 m3/h (44 US gpm)

Nozzle flow max. 30 m3/h (130 US gpm)

Bowl volume 70 l


Motor speed, synchronous 50/60Hz 1,500/1,800 rpm

Motor power installed 152 kW

Centrifugal force inside bowl max. 6,480 g

Starting time 5–8 mins

Stopping time without brake 80 mins

Stopping time with brake 6–7 mins

Feed temperature range 0–100°C (32–212 °F)

Feed inlet pressure at inlet flange 190 kPa 2)

Oil outlet pressure at outlet flange max. 450 kPa 3)

Outlet pressure of water at outlet flange 0 kPa 4)

Sound pressure 82 dB(A) 5)

1 ) Actual capacity depends on particle sizes, densities, viscosity and required degree of separation.2 ) At a process flow rate of 190 m3/h. Inlet pressure increases with the flow rate.3 ) At an outlet flow rate of 10 m3/h. Max. pressure decreases with flow rate. 4 ) Valid for atmospheric version with power recovery device.5 ) According to ISO 3746.


Electric power max. 130 kW 1)

Safety water 43–55 m3/h (190–240 US gpm) 2)

Inert gas blanketing approx. 0.4 Nm3/h

Inert gas initial purging 4 Nm3

1 ) At a process flow rate at 190 m3/h. Power consumption increases with the flow rate.2 ) The bowl should be filled at start, stop and normal operation. In case process liquid is not available, safety water should be used. The figures above refer to nozzle sizes from 1.45 to 2.0 mm and max. bowl speed. The safety water fed to the separator should always exceed the nozzle flow by 10 %.

Material data


Solids cover and frame hood s.s. 1.4401 UNS 31600

Frame bottom part grey cast iron

In and outlet parts s.s. 1.4501 UNS 32760

Gaskets and O-rings Fluorocarbon rubber

Connections

Feed 3½” flange ANSI

Oil outlet 3½” flange ANSI

Water outlet 6” flange ANSI

Solids outlet 6” flange ANSI

2345 mm (7 ft 8 / inch)1 4

Min

.315

5m

m(1

0ft

4/

inch

)1

4

2496

mm

(8ft

2/

inch

)1

4

1532 mm (5 ft / inch)1 4

Dimensions



Bowl 1,050 kg (2,350 lbs)

Motor 1,180 kg (2,600 lbs)


Volume 8.0 m3

High-capacity disc stack centrifuge for fats & oils refining

PX 115e & PX 115eEX

The Alfa Laval range of centrifuges for the vegetable oil and animal fat refining industries is continuously modernized to take advantage of developments in materials, mechanical design and fluid dynamics. The PX 115e/115eEX is a large-sized machine equipped with the direct drive system eDrive™.



Standard designThe machine consists of a frame with a base that contains a hollow vertical bowl spindle, on which the rotor part of the electric motor is mounted. The motor stator is placed inside the bottom part of the frame. The bowl is fixed on top of the spindle inside the space formed by the upper part of the frame, the solids collecting cover and the frame hood. The hood carries the liquid discharge system. All parts in contact with the process liquid are made of stain-less steel. The bowl is of the solids-ejecting type with an automatic hydraulic operating system for intermittent solids discharge. In the eDrive™ system, the electric motor is a switched reluctance motor with a permanent magnet rotor. The motor is powered by a frequency inverter.

PX 115e complete with direct drive system



Design featuresInlet. The PX 115e/115eEX is based on a unique, semi- hermetic design concept. The hermetic, bottom-fed inlet ensures a gentle, non-destructive acceleration of the feed-stock up to full bowl speed. This minimizes drop splitting and maximizes separation performance. The flow area for the feedstock has been increased to minimize inlet pressure drop. Outlets. The outlets on the heavy and light phases are open, reducing the pressure drop across the separator. The feed-pressure requirement of the machine is therefore low. The outlets are equipped with stationary paring devices for removal of the different phases. The paring disc on the light phases is fixed, while the paring tubes on the heavy phase are adjustable. Centrizoom™. By adjusting a positioner on the heavy-phase outlet, the operator can reduce or extend the paring diameter of the paring tubes. This patented innovation, Centrizoom™, makes it possible to adjust the interface between oil and soapstock in the bowl during operation to obtain maximum separation efficiency. Low noise level. With the working environment in mind, the PX 115e/115eEX is designed to operate at low noise levels. This is achieved through a rubber-damped bearing assembly, jacketed frame and an outer bowl design which is engineered for low wind noise. Energy savings. The eDrive™ electric motor is placed between the bearings in the bearing system that is well

proven for more than two decades. The motor type has a higher efficiency than conventional induction motors, which means energy savings of 10-15% in combination with the absence of a mechanical gear. The motor is water cooled and controlled by frequency inverter. Small footprint. The compact design of eDrive™ means a small footprint and saving of valuable floor area. Lubrication system. The lubrication system consists of tank, heat exchanger, pump and filter. Control and supervision. A 2Touch service panel controls and/or supervises the following functions: • Cooling of motor and bowl casing.• Cooling and lubrication of mechanical seals.• Flushing of outside of bowl and inside of bowl casing.• Control of the frequency converter and the bowl speed.• Control and supervision of lubrication and bearing

temperatures.• Control and supervision of discharge system.• Supervision of vibration.• Communication with plant control system via Modbus

TCP.The controller program is built in modules for easy incorpora-tion of different combinations of functions.



5

3

7

82 1

64

6

Material data



Frame bottom part Cast iron, clad with stainless steel 1.4301 UNS 30400





Sludge space volume 17 l (4.5 US gal)







Bowl 1,160 kg (2,600 lbs)



ATEX design code


Basic executionsPX 115e for non-explosive environments. PX 115eEX for ATEX zone 2.

Standard equipmentEach PX 115e/115eEX comes complete with control unit, electric motor, inlet and outlet connections, auxiliary equip-ment, a spare parts kit and set of tools.

Dimensions

1286 mm (4 ft 2 5/8 inch)

2000

mm

(6ft

66/

8in

ch)

1754 mm (5 ft 9 inch)

Min

.286

5m

m(9

ft4

6/8

inch

)

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Documents

X20 || ALFA LAVAL. Технические характеристики …For heavy crude oil dehydration X20 The Alfa Laval X20, model OFSX 520T-11CEGPX, is a high capacity purifier