DECANTER Biodiesel En

7/27/2019 DECANTER Biodiesel En

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FLOTTWEG CENTRIFUGES

for biodiesel production



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Biodiesel is a fuel produced

from natural fats and oils. Raw

materials are mainly vegetable

oils such as rape seed oil,

sunflower oil, palm oil, etc.

Biodiesel is used for replace-

ment for conventional diesel

fuel, thus reducing our

dependency on fossil fuels.

There are different production

processes used to create

biodiesel dependent on the

origin and quality of the raw

material. Biodiesel is produced

when triglyceride, which is a

major component of natural

fats and oils, is converted into

fatty acid ester. This transes-

terification reaction is carried

out by the addition of alcohol,

mostly methanol, and catalyst.

Centrifuges are applied in

several process stages.

• DISC STACK SEPARATOR

for the liquid-liquid separation

of glycerin water from

biodiesel (fatty acid ester)

• DISC STACK CLARIFIER

for the solid-liquid separation

• DECANTER for the solid-

liquid separation of washed

precipitated salts (e. g. potas-

sium sulfate) in glycerin

processing

Biodiesel

Biodiesel production

of fine solid impurities from

biodiesel (fatty acid ester)

• TRICANTER® for the simulta-

neous 3-phase liquid-liquid-

solid separation of biodiesel

(fatty acid ester), glycerin

water and precipitated salts

(e. g. potassium sulfate) in

glycerin processing.

Biodiesel (fatty acid ester) and

glycerin water, the products

from the transesterification

reaction, are commonly pro-

cessed in order to comply with

the most up-to-date purity

standards.




are ATEX 95 validated and can

be installed in ex-zones 1 and

2 in temperature classes T3

and T4. When using a unit in

ex-zone 1, a FLOTTWEG

CENTRIFUGE is blanketed

with inert gas, most commonly,

nitrogen. For this duty,

FLOTTWEG provides a special

inert purge gas control unit.

FLOTTWEG is ISO 9001

certified and manufactures all

products in compliance to the

latest technical standards.

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for production of biodiesel

Control unit for blanketing

centrifuges using inert gas

FLOTTWEG is a leading

international manufacturer of

sedimentation centrifuges and

has sold thousands of cen-

trifuges into hundreds of appli-

cations since the early 1950’s.


are being utilized by well

known biodiesel producers

and engineering companies.

FLOTTWEG has a worldwide

sales and service network with

its own subsidiaries, branch

offices and representations.

Machine availability and

reliability is our goal. Our

efficient designs, our commit-

ment to adhere to the highest

manufacturing standards, and

our highly experienced engi-

neering and aftermarket staff

will insure for maximum avail-

ability of your centrifuges.

FLOTTWEG PRODUCTS are

designed and manufactured

in GERMANY.



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3-PHASE DISC STACK SEPARATOR

FLOTTWEG DISC STACK CENTRIFUGES

for the production of biodiesel

Disc stack centrifuges with self

cleaning bowls are used for

clarifying 2-phase solid-liquid

suspensions and for separat-

ing 3-phase liquid-liquid-solid

suspensions. FLOTTWEG

recently developed the AC

series of disc stack centrifuges.

These centrifuges are equipped

with the SoftShot® discharge

system and feature very accu-

rate partial discharge and

smooth operation.

During the production of

biodiesel, disc stack centrifu-

ges are commonly utilized in

the following stages:

3-PHASE DISC STACK

SEPARATORS

After the transesterification

reaction, there is a mixture of

biodiesel (fatty acid ester) and

glycerin water. In most bio-

diesel production processes,

the transesterification is carried

out in 2 stages. Most of the

glycerin water that is produced

in each stage is separated bygravity. The residual amount of

glycerin water in the ester is

separated using disc stack

centrifuges. In order to achieve

maximum transesterification

efficiency, the amount of

residual glycerin in the ester

should be as low as possible.

After the second stage, com-

plete separation of the glycerin

water is important, because the

amount of residual glycerin is

critical to the quality of the

biodiesel.

Non desired components in

the biodiesel such as soap,

catalyst, and glycerin are

separated via one or multiple

washing stages with water. The

water has to be separated in

each stage. Disc stack cen-

trifuges are used for this

purpose. Nearly all the water

not chemically bonded to the

biodiesel can be removed

using a disc stack centrifuge.

The chemically bonded wateris separated via vacuum drying.

3-phase separation

light liquid phase

discharge heavy liquid phase

discharge

solids discharge

feed inlet

feed inlet

liquid discharge

Clarification

solids discharge

DISC STACK CLARIFIER

DISC STACK CLARIFIER

Dependent on the production

process and raw material, after

drying, the fatty ester still can

contain some fine solid impuri-

ties. In the final cleaning stage,

all these solids should be com-

pletely removed. Disc stack

clarifiers are used for this

purpose.



Technical data FLOTTWEG DISC STACK CENTRIFUGES

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Type AC1000 AC1500 AC2000 AC2500

Materials of All product wetted parts are made of high grade stainless steel such asconstruction DIN 1.4418, 1.4501, 1.4462 (Duplex), 1.4571 and 1.4404 (AISI 316L)

Overall 35” x 20” x 40” 60” x 40” x 70” 80” x 47” x 83” 80” x 47” x 80”dimensions* 900 x 500 x 1500 x 1000 x 2000 x 1200 x 2000 x 1200 x(L x W x H) 1000 mm 1800 mm 2100 mm 2000 mm

Gross weight* 915 lbs. 3860 lbs. 5300 lbs. 7600 lbs.415 kg 1750 kg 2410 kg 3450 kg

Motor 7.5 hp 20 hp 50 hp 75 hp

5.5 kW 15 kW 37 kW 55 kW

Capacity* 7.5 gpm 26 gpm 53 gpm 97 gpm

1700 l/h 6000 l/h 12000 l/h 22000 l/h

Optional Also available in explosion proof version according to Class I, Division 2, Group D or

ATEX 95 zone 1 with inert gas purge and zone 2 (for Europe)

Special features of FLOTTWEG

DISC STACK CENTRIFUGES

Dramatically reduced down

time for cleaning and flushing

when compared to a manual

disc stack centrifuge

Minimal liquid losses and

higher biodiesel yield with the

FLOTTWEG SoftShot® bowl

discharge system due to

accurate partial discharge

High availability and minimal

down time for service and

maintenance due to modular

construction

Extremely smooth running

operation via modern belt

drive design

* To be understood as guidelines.

Actual capacity depends on type and composition of raw material.



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FLOTTWEG DECANTERS/TRICANTERS®

for the production of biodiesel

of two immiscible liquids with

different densities and one

solid phase, provided the

liquids have a different density

and the solid phase is the

heaviest phase. Construction

and function are similar to a

decanter. The most important

difference is the separate

discharge of the two liquid

phases.

DECANTERS/TRICANTERS®

are used for processing the

raw glycerin from the transes-

terification reaction.

The FLOTTWEG TRICANTER®

separates biodiesel (fatty acid

ester), glycerin, and precipitat-

ed salts (e. g. potassium

sulfate) in a single step.

In some processes, potassium

sulfate is washed using metha-

nol. In this case, the crystal

mass is slurried using metha-

nol and then separated using a

FLOTTWEG DECANTER.

solids discharge

feed inlet

liquid dischargeunder pressure

heavy liquid phase

discharge under pressure

feed inlet

light liquid phase discharge by gravity solids discharge

FLOTTWEG DECANTERS are

used for continuous separation

of suspended solids from liquids

and clarification of liquids.

FLOTTWEG TRICANTERS®

simultaneously separate a

liquid-liquid-solid suspension

FLOTTWEG DECANTER

FLOTTWEG TRICANTER®



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Quick and accurate adaptation

to varying operating condtions:

FLOTTWEG’s adjustable

impeller allows for continuous

variation of the pond depth

during machine operation.

Maximum bearing life and

minimal energy demand:

FLOTTWEG’s simple, com-

pact, and maintenance-free

air/oil (droplet) lubrication

system continuously delivers

an optimal amount of fresh,

non-recycled oil to the main

rotor bearings. Floodless oil

delivery reduces bearing

operating temperature and

overall energy demand.

Maximum solids dewatering:

The FLOTTWEG SIMP-DRIVE®

system automatically controls

the scroll differential speed

according to the torque load

that the separating solids from

the feed stream generate.

Thus, the FLOTTWEG

DECANTER/TRICANTER®

adapts itself to varying process

conditions. The FLOTTWEG

SIMP-DRIVE® operates with

standard frequency converters.

Gastight versions allow for safe

operation with flammable

media by introducing inert

purge gas into the rotor and by

inertizing the process chamber

and centrifuge housing. Small

positive and negative pres-

sures can be maintained by

regulating the purge gas supply.

Special features of FLOTTWEG

DECANTERS and TRICANTERS®

Type Z23-3 Z4E-3 Z4E-4 Z6E-3 Z6E-4

Materials of All product wetted parts are made of high grade stainless steel such asconstruction DIN 1.4463 (Duplex) and 1.4571 (AISI 316 Ti)

Overall 65” x 39” x 24” 129” x 40” x 48” 149” x 40” x 48” 181” x 68” x 60” 206” x 68” x 60”dimensions* 1615 x 985 x 3226 x 1000 x 3736 x 1000 x 4527 x 1705 x 5147 x 1705 x

(L x W x H) 600 mm 1200 mm 1200 mm 1500 mm 1500 mm

Gross weight* 1672 lbs. 5720 lbs. 6600 lbs. 17556 lbs. 20306 lbs.760 kg 2600 kg 3000 kg 7980 kg 9230 kg

Motor for 15.0 hp 30.0 hp 30.0 hp 75.0 hp 100.0 hp

bowl drive 11 kW 22 kW 22 kW 55 kW 75 kW

Motor for 10.2 hp 10.2 hp 20.4 hp 25.2 hp

scroll drive 7.5 kW 7.5 kW 15 kW 18.5 kW

(FLOTTWEGSIMP-DRIVE® )

Capacity* 4.4 gpm 22.0 gpm 33.0 gpm 66.0 gpm 88.0 gpm1.0 m3 /h 5.0 m3 /h 7.5 m3 /h 15.0 m3 /h 20.0 m3 /h

Optional Also available in explosion proved version according to Class I, Division 2, Group Dor ATEX 95 zone 1 with inert gas purge and zone 2 (for Europe)

The mentioned FLOTTWEG CENTRIFUGES are available as DECANTER

for 2-phase separation and as TRICANTER® for 3-phase separation.

* To be understood as guidelines.

Actual capacity depends on type and composition of raw material.

Technical data FLOTTWEG DECANTER/TRICANTER®

Adjustable impeller



Representative:

Flottweg GmbH & Co. KGaA I n d u s t r i e s t r. 6 – 8

8 4 1 3 7 V i l s b i b u r g

Germany

Telephone +49 8741 301-0

Telefax +49 8741 301-300

m a i l @ f l o t t w e g . c o mw w w . f l o t t w e g . c o m P

R –

0 0 0 4 Z B –

1 0 1 1 / 0 5

FLOTTWEG worldwide

FLOTTWEG – headquatered

in Vilsbiburg/Germany, near

Munich – has subsidiaries and

branch offices in Australia,

Brazil, China, Germany

(Ratingen/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 you

any way we can!

Own subsidiaries and branch offices

Documents

DECANTER Biodiesel En