Transcript
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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
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