Solid-Liquid Separation

FLOTTWEG CENTRIFUGES,

BELT PRESSES AND SYSTEMS

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FLOTTWEG – the company

FLOTTWEG machines for a clean environment

Until today, FLOTTWEG has

manufactured and sold thou-

sands of centrifuges and

hundreds of belt presses

worldwide. FLOTTWEG

products are well received in

the mining, petrochemical,

chemical, pharmaceutical,

food, and manufacturing

industries as well as in the

environmental area like

treatment of waste water or

oil sludge.

FLOTTWEG is a worldwide

leading manufacturer of sedi-

mentation centrifuges. The

company was founded in 1932

and started to develop and

manufacture decanter cen-

trifuges (solid-bowl scroll

centrifuges) in the 1950s. Over

the years, FLOTTWEG has

gained considerable expertise

in many solid-liquid separa-

tion applications. FLOTTWEG’s

current product line comprises

solid-bowl scroll centrifuges,

disk stack centrifuges, belt

presses and systems for

capacities from pilot plant to

large industrial installations.

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FLOTTWEG Headquarters in Vilsbiburg/Germany

FLOTTWEG’s objective is to

develop, manufacture and

provide products that meet

all customer and industry

requirements. High-grade

manufacturing with constant

advancement provide superior

product quality and it is our

commitment to maintain this

standard.

For the benefit of all our

customers we consequently

make use of our knowledge

in process technology and

experience we have acquired

over decades.

FLOTTWEG has a worldwide

sales and service network with

its own subsidiaries, branch

offices and representations. In

2006, about 500 employees

worldwide have achieved sales

of 94 Million Euro. The export

rate of FLOTTWEG products

is approximately 80 %.

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Solid-liquid separation

these simple methods is the

separation by gravity settling,

i. e., sedimentation by gravity

on one hand as well as

mechanical pressing on the

other hand. Using centrifuges,

gravity is replaced by centrifu-

gal force. In today’s centri-

fuges this centrifugal force

Since antiquity, mankind has

been making use of mechani-

cal separation for wine clarifi-

cation, milk skimming and gold

washing. Characteristic of

generates up to ten thousand

times the force of gravity.

Separation using centrifuges

is performed faster and more

efficiently than via gravity

sedimentation. The pressing

principle is performed using

modern filter presses and

centrifuges.

In many processes, mechani-

cal separation is responsible

for product quality, production

efficiency and environmental

compatibility. Mechanical

separation processes are

found in practically all industri-

al sectors, such as food pro-

cessing, chemical, pharmaceu-

tical, biotechnology, metal

processing, and environmental

protection.

Modern centrifuges have many

advantages compared to

other mechanical separation

processes:

compact design

sealed construction to avoid

odor emissions and product

contamination

ease of handling through

continuous, automated

operation

no need for expenditure of

filter media or filter aids, etc.

FLOTTWEG has developed

solid-bowl scroll centrifuges

such as DECANTERS,

SEDICANTERS®, TRICANTERS®

and SORTICANTERS® as well as

DISK STACK CENTRIFUGES

for many different applications.

FLOTTWEG BELT PRESSES

complete FLOTTWEG’s prod-

uct line. In contrast to the centri-

fuges the solid-liquid separation

is performed via filtration and

mechanical pressing. Compared

with other filtration methods, the

advantage of the belt press is

the continuous operation.

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FLOTTWEG products and applications

Solid-liquid (2 phase) Liquid-liquid (2 phase)

Liquid-liquid-solid (3 phase)

Extraction

BasicOperation

Clarifi-cation ofliquids

Concen-tration of

solids

Thickeningand

dewateringof sludge

Dewateringof grained

solids

Wetclassifi-cation

Separationof mixturesof liquids

Separationof mixturesof liquidsand solids

Extractionfrom liquids

Extractionfrom solids

DECANTER ● ● ● ● ● ●

SEDICANTER® ● ● ● ●

TRICANTER® ● ● ● ●

SORTICANTER® ●

DISK STACKCENTRIFUGE ● ● ● ● ●

BELT PRESS ● ● ● ● ●

Fat and oil

Beverage Chemical/PharmaFood

Industrial sewageMineral oilService worldwide

Sewage sludge

® = registered trademark in various countries

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FLOTTWEG DECANTER

Dewatering and thickening of

sludge from municipal and

industrial water and waste

water facilities

Production of plastics such

as PVC, HDPE

Recovery and processing of

animal and vegetable products

(oils, fats, starch, proteins)

Beverages (wine, beer, fruit

and vegetable juices)

Dewatering of slurries in the

mining industry

Renewable energy such as

biodiesel and bioethanol

FLOTTWEG DECANTERS are

used for continuous separation

of suspended solids from liquids,

clarification of liquids, classifi-

cation of fine pigments, etc.

FLOTTWEG provides a broad

range of decanter sizes, from

pilot scale or small production

up to industrial scale with

capacities with product of

250 m3/h (1 100 gallons per

minute).

solids discharge liquid discharge by gravity

feed inlet

Typical applications

FLOTTWEG DECANTER type Z92 in a German waste water facility

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FLOTTWEG SEDICANTER®

Separation of biomass (yeast

cells, bacteria, etc.) from

fermentation broth

Recovery and processing of

vegetable proteins, e. g.

from soy

Beer recovery from surplus

yeast

® = registered trademark in various countries

FLOTTWEG SEDICANTER® type S4 Efor beer recovery

FLOTTWEG SEDICANTERS®

are used for the separation of

solids from liquids with the

solids forming a soft to flow-

able sediment.

FLOTTWEG SEDICANTERS®

are used in cases where the

solids are too fine-grained to

be processed in a decanter

and the sediment cannot be

Typical applications

solids discharge

liquid dischargeunder pressure

feed inlet

easily discharged from the

decanter due to its soft

consistency.

FLOTTWEG’s range of

SEDICANTER® sizes includes

capacities with product up to

50 m3/h (220 gallons per

minute).

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FLOTTWEG TRICANTER®

FLOTTWEG TRICANTERS®

enable three-phase separation

with simultaneous separation

of two immiscible liquids with

different densities and one

solid phase, provided that the

liquids have a different density

and the solid phase is the

heaviest phase. Construction

and function are similar to the

decanter. The most important

difference is the separate

discharge of the two liquid

phases.

FLOTTWEG’s TRICANTER size

range is from pilot scale or

small production up to industri-

al scale with capacities with

product of 80 m3/h (350 gallons

per minute).

Processing of sludge contain-

ing hydrocarbons from

refineries, oil ponds, etc.

Recovery of animal and

vegetable fats and oils

Typical applications

heavy liquid phasedischarge under pressure

feed inlet

light liquid phase discharge by gravitysolids discharge

Separation of wheat starch and

gluten in starch facilities

FLOTTWEG TRICANTER® type Z4E for treatment of sludge containing hydrocarbons

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FLOTTWEG SORTICANTER®

FLOTTWEG SORTICANTER® are

specialized horizontal decanter

centrifuges for the continuous

separation of 2 solid phases with

different densities from a liquid.

The process is assisted by a

carrier liquid with a specific

gravity that is between the

densities of the two solid

streams to be separated.

FLOTTWEG’s range of

SORTICANTER® sizes is up to

1 000 kg/h solids, dependent on

the properties of the feed.

Plastic recycling

Separation of mixtures of a

floating and a settling solids

phase from a liquid phase,

with the density of the liquid

between the densities of the

two solid phases

Typical applications

liquid dischargeunder pressure

feed inlet

solids discharge light phasesolids discharge heavy phase

® = registered trademark in various countries

FLOTTWEG SORTICANTER® type K6E for plastic recycling

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FLOTTWEG DISK STACK CENTRIFUGES

Disk stack centrifuges with self

cleaning bowl are used for clari-

fying and 3-phase separation

of liquid-solid suspensions. Clari-

fying is to separate suspended

solids from liquids (2 phases).

3-phase separation is to

separate two immiscible liquids

and solids simultaneously.

FLOTTWEG recently devel-

oped the AC series of disk

stack centrifuges. They are

equipped with the SoftShot®

discharge system and feature

an accurate partial discharge

and smooth operation.

FLOTTWEG’s product range

for disk stack centrifuges

comprises several sizes and

includes capacities from below

1 m3/h (5 gallons per minute)

up to 85 m3/h (370 gallons per

minute).

FLOTTWEG DISK STACK CLARIFIER for the separation of solids from liquids

feed inlet

liquid discharge

Clarification

solids discharge

FLOTTWEG DISK STACK CENTRIFUGE type AC2500for the clarification of fruit juice and fruit wine

® = registered trademark in various countries

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Beverage industry

Food

Chemistry, pharmacy,

biotechnology

Animal and vegetable

fats and oils

Mineral oil and

mineral oil products

Typical applications

The range of FLOTTWEG

centrifuges also includes spe-

cial centrifuges which are used

in soap production for the sep-

aration of liquid soap and lye.

FLOTTWEG soap centrifuges

are suitable for capacities from

1 000 to 10 000 kg/h soap.

FLOTTWEG DISK STACK CENTRIFUGE for the separation of two immiscible liquids and simultaneous solids separation

3-phase separation

light liquid phasedischarge heavy liquid phase

discharge

solids discharge

feed inlet

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FLOTTWEG BELT PRESSES

FLOTTWEG BELT PRESSES are

used for the continuous separa-

tion of liquid from different solid-

liquid mixtures.

In some processes they enable

an advanced dewatering of the

solids phase from a decanter.

Characteristic for FLOTTWEG

BELT PRESSES is the entire

construction in stainless steel.

This provides high hygienic

standard and long term durabili-

ty. FLOTTWEG BELT PRESSES

include an efficient, well thought

out design with easy accessibili-

ty for operation and cleaning.

A pneumatic belt-control system

provides for reliable operation

with minimum manpower.

FLOTTWEG’s product range for

belt presses comprises several

sizes and includes capacities

from 1 up to 40 tons per hour

raw material feed.

Extraction of juice from fruits

and vegetables

Dewatering of brewer grains

Extract from algae

Coffee grounds

Extract from herbs

Industry sludge

Biological sludge

Magnesium sulfate

Manganese sulfate

Metal sludge

Typical applications

FLOTTWEG BELT PRESSES for the extraction of apple juice

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feed

wedge zone

L-profiled roller

press rollers

linear/peripheral pressurepipes with high pressure

spray nozzles

Via a feed box the product is

spread continuously and

uniformly on the lower belt. In

the wedge zone the upper belt

exerts a constantly increasing

surface pressure on the prod-

uct, thus building up a stable

filter cake. In the pressing

zone, the dewatering process

begins in the first stage via the

L-profiled roller which pro-

vides a quick discharge of the

separated liquid to both sides.

In a second stage the product

is pressed via multiple press

rollers with decreasing roller

diameters. By the alternating

pressure and shear stress, the

product is dewatered quickly

to an optimum. As an option,

there are rollers available for

linear and peripheral pres-

sure for further optimization of

the machine’s efficiency.

In order to achieve a consis-

tently high pressing capacity,

the belts are cleaned continu-

ously using pipes with high

pressure spray nozzles.

Functional description

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FLOTTWEG SYSTEMS

In order to operate centrifuges

and belt presses some addi-

tional components are often

required such as control units,

pumps, heat exchangers,

skids and enclosed containers.

If required, FLOTTWEG

SYSTEMS combine all these

components in a unit ready for

connection.

For oil recovery from residues

containing hydrocarbons

FLOTTWEG provides

DECANTER and TRICANTER®

SYSTEMS including pumps,

oil suction unit, intermediate

tanks, flocculant dosage,

control unit, etc.

There are FLOTTWEG

SYSTEMS for a broad range

of applications. FLOTTWEG

SYSTEMS are available skid

mounted on one or multiple

platforms or as container units.

For the extraction of premium

juices FLOTTWEG provides

complete lines of fruit process-

ing to juice producers. The

FLOTTWEG multi-stage press-

ing process with extraction in

an intermediate tank provides

high juice quality and efficient

operation. Using this method,

up to 92 % in yield can be

reached dependent on the fruit

quality.

FLOTTWEG SYSTEM for processing drilling mud

FLOTTWEG BELT PRESS SYSTEM for the extraction of fruit juice

® = registered trademark in various countries

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FLOTTWEG SERVICE

Reliable service is our commit-

ment. Efficient design, high

manufacturing standards and

appropriate maintenance are

necessary for trouble-free

operation. Our competent and

reliable customer service is

ready when needed. We also

provide preventive mainte-

nance, in order to increase

production-online availability.

FLOTTWEG is ISO 9001

certified and manufactures all

products in compliance to the

latest technical standards.

FLOTTWEG products are designed and manu-factured in GERMANY!

Our skilled engineers and

technicians are fully trained.

They are also qualified for the

repair and maintenance of

machines from other manu-

facturers.

FLOTTWEG SERVICE

at a glance:

Lay out for plants

and control units

In house or field tests using

fixed and mobile test units

Rental machines and systems

Used machines

Customer service

Representative:

PR

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FLOTTWEG worldwide

FLOTTWEG – headquatered

in Vilsbiburg/Germany, near

Munich – has subsidiaries and

branch offices in Australia,

Brazil, China, Germany

(Cologne/Leipzig), France,

Italy, Mexico, Poland, Russia,

Ukraine, U.K., USA as well as

representations in nearly all

countries worldwide.

On our homepage

www.flottweg.com under

contact/service you will find your

competent contact person.

We will support youany way we can!

Own subsidiaries and branch offices