FLOTTWEG DECANTERS,

DISC STACK CENTRIFUGES AND

BELT PRESSES IN BREWERIES

For high quality beer and

a clean environment

2

The origin of the purity law is

deeply rooted in German history.

It is regarded as the oldest

valid food law in the world.

In 1516, the Bavarian Duke

Wilhelm IV pronounced the

purity law for German beer

before the country estates'

council in Ingolstadt and thus

set a quality standard which is

still in force today.

Its main content is that beer is

brewed exclusively from malted

barley or wheat, hops, and water,

and contains no other ingredients

(such as sugar, rice, or corn),

additives, or preservatives.

Presently, brewing efficiently

also means treating natural

resources like energy, water,

and air with respect and

consideration.

As we are a Bavarian company, thequality of beer is particularly close to our heart

High quality beer and a clean environment go together!

3

The Brewing Process

Solid-liquid separation tasks such

as clarifying and dewatering are

key processes in breweries.

FLOTTWEG DECANTERS,

DISC STACK CENTRIFUGES,

and BELT PRESSES perform

these important solid-liquid

separation tasks both in the

brewery process and in the

treatment of by-products.

4

Different tasks require specificsolutions

In breweries, disc stack

centrifuges separate trub from

wort, clarify green beer, adjust

the number of yeast cells in

wheat beer, facilitate filtration

by separating yeast cells, and

clean CIP bases.

FLOTTWEG DISC STACK

CENTRIFUGES are especially

developed for breweries. They

comply with a high hygienic

standard and are completely

CIP capable.

Very soft products such as fine

trub or yeast cells require gentle

treatment and high centrifugal

force for optimal separation.

The FLOTTWEG SoftShot®

discharge system ejects the

separated trub or the yeast

from the bowl at full speed,

thus performing an accurate

partial discharge.

SEPARATOR AC2500

FLOTTWEG DISC STACK CENTRIFUGES

Benefits of FLOTTWEG DISC

STACK CENTRIFUGES

• No oxidation of the beer due

to the FLOTTWEG hydro her-

metic design, which provides

perfect sealing of the product

from the atmosphere without

mechanical seal elements.

• Low-noise belt drive.

• Gentle product treatment

due to a special feed system.

• Discharge control via turbidi-

ty measurement provides

discharge at the ideal moment

and minimizes losses of

precious beer or wort.

• Accurate partial discharge

due to the SoftShot® system,

which eliminates loud noise.

• FLOTTWEG DISC STACK

CENTRIFUGES can be instal-

led in production facilities with-

out additional sound insulation.

Decanters in breweries sepa-

rate the wort in the whirlpool

from the trub. In contrast to disc

stack centrifuges, decanters are

solid-orientated centrifuges.

Therefore, they are able to

treat suspensions with a high

solids content and they con-

centrate the separated solids

for high cake dryness.

Recovering the trub minimizes

the organic load in the waste

water and increases the effi-

ciency of the brewhouse.

Benefits of the FLOTTWEG

DECANTER

• Hygienic design with

adequate wear protection.

• Continuous automatic process

for optimized operating costs.

• Small footprint, especially in

comparison to filters.

• Ease of operation and

maintenance: spare parts are

easily accessible and can be

changed on-site.

• Automatic regulation via the

FLOTTWEG SIMP-DRIVE®

provides dry solids and

adjustment to varying

operation conditions.

DECANTER Z5E

FLOTTWEG DECANTERS

Reliable and efficient

® = registered trademark in various countries5

6

Beer recovery from surplus yeast using the FLOTTWEG SEDICANTER®

Saving the very last drop

The FLOTTWEG SEDICANTER®

is a high-performance horizon-

tal centrifuge which offers all

the advantages of a traditional

decanter and those of a disc

stack centrifuge. There is no

other centrifuge offering such a

combination of high centrifugal

force, continuous operation, and

closed design in order to avoid

oxygen pick-up. The results are

a dry cake and a high quality

beer. Due to these characteris-

tics, the FLOTTWEG SEDICAN-

TER® is the economic solution

for beer recovery from yeast

surplus.

Benefits of the FLOTTWEG

SEDICANTER®

• High separation efficiency

The rotor of the FLOTTWEG

SEDICANTER® generates

a centrifugal force of up to

6000 x g. The recovered beer

is almost yeast free.

• Perfect beer quality

In order to avoid oxygen

pickup, the housing of the

FLOTTWEG SEDICANTER® is

closed and the rotor is blanket-

ed using carbon dioxide. Add-

itionally, the recovered beer is

discharged through an adjust-

able impeller under pressure.

• Optimal yield

The combination of special

design features and high

centrifugal force provides

high beer yields. The typical

cake dryness ranges from

24 to 28 %.

SEDICANTER® S4E

7

Due to increasing energy prices

and decreasing sales revenues

of spent grains, a special process

to use spent grains has been de-

veloped. The spent grains are

dewatered mechanically using a

FLOTTWEG BELT PRESS, and

then incinerated utilizing biomass

combustion. One metric ton of

wet spent grains can produce

approximately one 1000 kWh of

thermal energy. Depending on

the combustion technology,

70 – 75 % of this energy can be

used. The FLOTTWEG BELT

PRESS has been especially ad-

apted to the specific require-

ments of spent grains. Due to

its high efficiency, the belt press

separates up to 520 kg of water

from 1 ton of wet spent grains.

Therefore the efficiency of the

whole process increases con-

siderably. The more water that

Combustion of spent grains – an environmentally friendly energy source

can be extracted, the more

energy is available for the

brewery. Using a FLOTTWEG

BELT PRESS, it is possible to

produce energy in an environ-

mentally friendly and economic

way.

BELT PRESS BP 1500

Advantages of spent grain

incineration

• Secured and sophisticated uti-

lization of spent grains – inde-

pendent from external routes.

• Environmentally-friendly

energy using energy carriers

from the brewing process.

• CO2 neutral technology.

• No disposal costs.

• Cost reduction by combus-

tion of other residuals such

as used labels.

• Additional revenues by

selling CO2-certificates.

® = registered trademark in various countries

Residues become resources!

8

FLOTTWEG DECANTER

Decanter type Z4E-4/401 Z5E-4/401 Z6E-4/401 Z73-4/454

Construction All product wetted parts are made of high grade stainless steel materials such as 1.4463 (Duplex) and 1.4571 (AISI 316 Ti)

Capacity* up to 110 m3/h / 485 gpm

Technical data

Characteristics of the FLOTTWEGDECANTER and SEDICANTER®

• Optimal clarification

The FLOTTWEG DECANTERS

and SEDICANTERS® devel-

oped especially for brewery

processes are equipped with

an adjustable impeller. The

clarified beer is discharged

under pressure. The liquid

level in the machine can be

adjusted by the impeller

during operation. Thus, fine

regulation of the clarified beer

and/or dehumidification of

the separated trub are possi-

ble during operation. The

results are an optimal clarifi-

cation and high cake dryness.

• Optimal cake dryness

During wort recovery and

waste water treatment, the

solid phase of a decanter

must always be as dry as

possible – even under vary-

ing feed conditions. The

FLOTTWEG SIMP-DRIVE®

system automatically con-

trols the scroll differential

speed according to the scroll

torque. The FLOTTWEG

SIMP-DRIVE® consists of a

multi-stage planetary gear,

driven by a second motor,

to regulate the differential

speed.

Applying both centrifugal

separation and mechanical

pressing provides optimal

cake dryness.

® = registered trademark in various countries

FLOTTWEG SEDICANTER®

for beer recovery

Sedicanter type S3E S4E S6E

Construction All product wetted parts are made of high grade stainless steel materials such as 1.4463 (Duplex) and 1.4571 (AISI 316 Ti)

Capacity* up to 10 hl/h / 4.4 gpm up to 30 hl/h / 13.2 gpm up to 80 hl/h / 35.2 gpm

FLOTTWEG BELT PRESSES

for the dewatering of spent grains

Belt press type BP 800 TR BP 1200 TR BP 1500 TR BP 1750 TR BP 2500 TR

Capacity* up to 7 metric tons per hour with solids dryness up to 42 %

9

FLOTTWEG AC DISC STACK CENTRIFUGESDisc stack centrifuge type AC1500 AC2000 AC2500

Construction All product wetted parts are made of high grade stainless steelmaterials such as 1.4418, 1.4501, 1.4462 (Duplex), 1.4571 and 1.4404 (AISI 316L)

Capacity* up to 160 hl/h / 70.5 gpm up to 300 hl/h / 132 gpm up to 620 hl/h / 273 gpm

Optional Discharge regulation via measurement of cloudiness

Technical data

Characteristics of FLOTTWEG BELT PRESSES

Characteristics of FLOTTWEG AC-DISC STACK CENTRIFUGES

• FLOTTWEG BELT PRESSES

are made of high-grade stain-

less steel, which results in a

high hygienic standard and

a long lifetime.

• FLOTTWEG BELT PRESSES

feature efficient design and

easy access for cleaning

and operation.

• Pneumatic belt regulation

enables reliable operation

with minimum personnel

requirements.

• Optimal beer yield due to

partial discharge using the

SoftShot® discharge system.

• Smooth run due to the

modern sturdy belt drive.

• CIP-capable.

• No oxygen pick-up due to

hydro-hermetic design, pro-

viding perfect sealing of the

product from the atmosphere.

• Short downtime periods for

maintenance and machine

care due to modern design.

* The listed figures are guidelines to be used for information only. Actual capacity depends on the characteristics of the feed.

Technical data

10

Breweries do not only produce beer…

FLOTTWEG DECANTERS for waste water facilities in breweries

Many breweries already profit

from the advantages of biologi-

cal wastewater treatment. The

dewatered sewage sludge can

be used for agricultural utiliza-

tion, incineration, or landfill.

Cost-effective dewatering

produces dry cake, whether

the solids are to be hauled,

landfilled, or incinerated.

Like in municipal sewage

plants, decanters offer many

advantages to waste water

treatment plants in breweries.

• 24 hour operation with

minimal supervision.

• Low energy consumption.

• Compared to conventional de-

signs, the dewatered sludge

is up to 10 % points drier.

• More compact design, smaller

footprint, and higher perform-

ance than filter presses.

• Easy handling and monitor-

ing due to continuous and

automatic operation.

• No addition of lime necessary.

• Minimal use of polymer.

• Differential speed control can

regulate consistent cake

dryness.

• Sealed construction that

avoids odor emissions.

11

FLOTTWEG – a future-orientated company

The company was founded in

1932 and has been developing

and manufacturing decanters

since the beginning of the 1950s.

Over the years, FLOTTWEG has

gained considerable expertise in

many solid-liquid separation appli-

cations. Presently, FLOTTWEG

is a worldwide leading manufac-

turer of centrifuges.

FLOTTWEG’s current product

line comprises decanters, disc

stack centrifuges, belt presses,

and systems. FLOTTWEG’s

objective is to develop, manu-

facture, 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 of our customers we

make use of our experience

and knowledge in process

technology that we have

acquired over decades.

FLOTTWEG is ISO 9001:2000

certified and manufactures all

products in compliance to the

latest technical standards.

FLOTTWEG products are

designed and manufactured

in GERMANY!

FLOTTWEG Headquarters in Vilsbiburg/Germany

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Representative:

F l o t t w e g A GI n d u s t r i e s t r a ß e 6 – 88 4 1 3 7 V i l s b i b u r gDeutschland (Germany)

Te l . : + 4 9 8 7 4 1 3 0 1 - 0Fax: +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 worldwide

FLOTTWEG – headquartered

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