Innovative centrifugal technology

FLOTTWEG TRICANTER®

for wheat starch production

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Starch has been produced

from various feedstocks for

quite some time. The desire for

a broad range of end products

coupled with stronger environ-

mental regulations, forces

producers to look for the most

effective and economic pro-

cessing equipment available.

Utilizing the FLOTTWEG

TRICANTER® to separate

A-starch, pentosans, and

gluten/B-starch into 3 distinct

fractions is the most effective

and economic way to process

wheat flour into its by-products.

• Better separation efficiency.

A good starch split makes

downstream processing

easier and improves product

quality and yield.

The FLOTTWEG TRICANTER®

Operating principle of the FLOTTWEG TRICANTER®

• Easier and more flexible to

operate. Allows the end user

to produce high quality end

products from changing feed

materials.

Benefits of FLOTTWEG TRICANTER®

for wheat starch• Minimal fresh water

consumption.

• Waste water reduction with

minimal solids content.

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Special features of FLOTTWEGTRICANTER® for starch separation

• Adjustable impeller

Allows for continuous adjust-

ment of pond height during

machine operation.

Excellent gluten quality is

achievable at lower product

temperatures.

• Lubrication

The simplicity of the Flottweg

oil-air lubrication system

ensures an optimal amount

of lubrication maximizing

bearing life and requiring

virtually no maintenance.

• Drive system

Flottweg offers both hydraulic

and electric scroll drive

arrangements. The

FLOTTWEG SIMP DRIVE®,

which is Flottweg’s unique

dual VFD drive system, has

proven to have the lowest

energy requirements of any

decanter or tricanter available.

• Wear protection

All parts susceptible to wear

are protected by a special

stellite coating which allows

for a more CIPable and

hygienic design.

• Maintenance

Robust and ergonomic

design results in longer

maintenance intervals and

minimal down time for

scheduled inspections.

Z6E-3/441 TRICANTER®

® = registered trademark in various countries

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The FLOTTWEG TRICANTER® processBasic Process Description

Flour is mixed with water at a

specified ratio in a dough

mixer. Rapid and complete

mixing accelerates the forma-

tion of gluten. After water

adsorption and hydration in an

aging tank, the highly viscous

slurry is pumped into a homo-

genizer where shear forces

effectively brake up the matrix.

Then the mixture is fed directly

to the FLOTTWEG TRICANTER®

where it is efficiently separated

into three (3) distinct phases.

The solids phase is a nearly

pure A-starch that contains

approximately 1.5 % protein

at a concentration of about

54 % d.s.

After removing the fibres, the

A-starch is washed in a

multiple stage hydrocyclone

washing system to a protein

content of 0.25 to 0.30 % or

less. The A-starch is concen-

trated to 21 Be, which is suit-

able as a raw material for

glucose production or can be

dewatered and dried further to

approximately 88 %.

A-starch is separated via the

solids discharge ports which

allows for a high yield and

low protein content. The

A-starch no longer contains

any gluten.

FLOTTWEG TRICANTER® process

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The heavy liquid phase

contains gluten and B-starch.

It is discharged under moderate

pressure via the combination

of a separation disc and

patented adjustable impeller,

which allows for density and

gluten quality optimization

during operation.

The gluten is separated from

the B-starch by screens and is

then pressed and dried in a

gluten dryer. After removing

fibres, the B-Starch fraction is

fed into a HC-Unit to recover

remaining larger starch particles

(B+) to increase yields at high

product concentrations. The

overflow is subject for further

purification with a FLOTTWEG

SEDICANTER®. The liquid

effluent from the FLOTTWEG

TRICANTER® is clean and can

be re-used as process water.

Starch density and gluten

quality can be optimized

during operation.

The light liquid phase contains

pentosans and other soluble

components. It is discharged

from the tricanter via gravity

and can be considered the

wastewater stream of a starch

plant. Separating these com-

ponents near the beginning of

the starch production process,

minimizes fresh water con-

sumption, and dramatically

reduces the amount of waste

water produced. Reducing the

amount of fresh water required

will minimize starch losses.

Minimized starch losses

with reduced fresh water

consumption.

FLOTTWEG offers an adaptive

process water system depen-

ding on the customer’s require-

ments. All clarified effluents

can be recycled in a subdivided

central process water tank.

Controlled dosing of fresh

water ensures the process

water quality and can be

adjusted according to the

requirements for the various

process stages.

FLOTTWEG TRICANTER®

TECHNOLOGY allows a starch

production facility the flexibility

to produce a broad range of

end products. These products

can be wet or dried, depending

on client’s preference. Custo-

mized process solutions,

including the necessary flow

sheets, can be provided to

meet all product requirements.

Possible end products

• Dewatered or dried gluten

• Wet A-starch 21 Be suitable

for glucose production

• Dry A-starch for modification

• Wet B-starch and fibres for

feed stock or alcohol

production

• Wet pentosans and solubles

for feed stock

® = registered trademark in various countries

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FLOTTWEG SEDICANTER® andDISC STACK CENTRIFUGESThe perfect solution for your process effluents

The SEDICANTER® was deve-

loped to concentrate and

thicken products which are

very difficult to separate such

as proteins, pentosans, and

other slimy products.

DECANTER centrifuges are

limited to suspensions in which

the solids sufficiently compact

to a point where they are

effectively conveyed and

discharged by the internal

scroll. Suspensions with fine

solids cannot be effectively

discharged from a decanter

due to the slimy nature of the

separated solids.

The SEDICANTER® can be

used in the starch process for:

• Protein recovery from

wheat starch effluent

• Concentration of

pentosans/proteins

• Separation of very fine fibres

from protein solutions

The water surplus from A-

starch separation, B-starch

concentration, and the fiber

fraction can be processed to

increase recovery. FLOTTWEG

DISC STACK CENTRIFUGES

are used for clarifying recycled

process water to avoid accu-

mulation of fine suspended

solids.

The new AC-series of Flottweg

disc stack clarifiers are per-

fectly suited for the effluent

treatment in the wheat starch

process.

Their features include:

• Innovative bowl discharge

system for accurate partial

and total solids discharge

• Compact spindle unit for

easy maintenance

• Extremely low noise levels

during operation and

discharge

• Low-maintenance belt drive

• High sludge chamber volume

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FLOTTWEG – advancedstarch technology

• Experience

FLOTTWEG has been

manufacturing decanter

centrifuges and developing

decanter technology for

more than 50 years.

FLOTTWEG 3-phase

tricanter technology has

been well proven for more

than 20 years.

• References

FLOTTWEG DECANTERS

and TRICANTERS® are in

operation in many well-

known starch companies

around the world. A large

number of centrifuges are

successfully running on

wheat starch separation

applications.

• Engineering

Flottweg’s engineering staff

can offer any degree of

required support ranging

from decanter/tricanter

installation information to

complete product

management.

• Turn key projects

Flottweg can engineer and

design complete wheat

starch production lines. Our

process incorporates well

proven FLOTTWEG

EQUIPMENT such as the

TRICANTER®, special A- and

B-starch dewatering

DECANTERS, the

SEDICANTER®, DISC STACK

CENTRIFUGES and screens,

hydrocyclones, and homo-

genizers from well-known

suppliers modified to meet

the specific process

requirements.

® = registered trademark in various countries

FLOTTWEG STARCH TRICANTER®

Z4E Z5E Z6E

Bowl diameter 420 mm (17”) 530 mm (21”) 620 mm (24”)

Max. Bowl speed 4 200 rpm 3 500 rpm 3 200 rpm

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

Overall dimensions 3 200 x 1 000 x 1 000 mm 4 525 x 1 405 x 1 140 mm 4 125 x 2 050 x 1 200 mm(LxWxH) 126” x 39” x 39” 178” x 55” x 45” 162” x 81” x 47”

Gross weight 2 600 kg (5 700 lb) 6 200 kg (13 700 lb) 5 400 kg (11 900 lb)

Motor size 30 + 22 kW 75 + 30 kW 90 + 90 kW(70 hp) (140 hp) (240 hp)

Capacity (wheat 1– 3 t/h 3– 6 t/h 6– 11 t/hflour)

Option Electro polished surfaces, base frame available in stainless steel,hydraulic and motor gears

Technical data

Representative:

Flottweg GmbH & Co. KGaAI n d u s t r i e s t r. 6 – 88 4 1 3 7 V i l s b i b u r gGermany

Telephone +49 8741 301-0Telefax +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

FLOTTWEG – advanced starch technology

• Certified German Technology

FLOTTWEG has been a leading

supplier of centrifuges for over

50 years with the highest of

manufacturing standards.

FLOTTWEG is ISO 9001 certified

and manufactures all products in

compliance with the latest

technical standards.

FLOTTWEG products

are designed and manufactured

in GERMANY!

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® = registered trademark in various countries