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New operating concept

Alfa Laval tank cleaning technology enables ethanol

producers to make radical changes to their cleaning

procedures. The rapid, automated cleaning procedures now

available mean that the time needed for cleaning between

batches is shorter. This leads to increased production

efficiency and lower costs.

Installing Alfa Laval rotary jet heads in tanks and other

equipment also makes it possible to ensure a highly efficient,

continuous production flow. This both reduces costs and

maintains a high level of production at all times.

Rapid, automated cleaning of your fermenters

All the process systems and tanks used in the ethanol

production industry need regular cleaning to preventcontamination during the fermentation process. In particular,

cleaning of the fermenters after each batch with or without

the use of biocide is part of the normal cleaning procedure.

For this application, the spray ball technology currently

available has proven ineffective because the spray ball

does not provide any impact effect on the surface of the

fermenters. This means that effective cleaning then takes

much longer.

By installing Alfa Laval rotary jet heads inside the fermenters,

it is now possible to carry out such tank cleaning both rapidlyand automatically. This specialist equipment provides 360

indexed impact cleaning that is defined over a preset time

period.

Such a rapid, fully automated cleaning method virtually

eliminates downtime and other production disruptions due to

tank cleaning. These new cleaning procedures also reduce

the quantities of water and biocide used.

Finally, efficient cleaning of the fermenters increases

fermentation performance and saves money on antibiotics.

Improve your plants production efficiency

Alfa Laval automated tank cleaning systems for the ethanol industry

Main benefits for ethanol producers

Rapid cleaning, resulting in less downtime Reduced biocide consumption

Reduced water consumption

Less use of antibiotics, avoiding savage yeast

Reduced manpower requirements

Reduced environmental impact

Moderate investment/rapid return

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How to contact Alfa Laval

Up-to-date contact details for all

countries are available on ourwebsite at www.alfalaval.com.

PPI00148EN 0705 Alfa Laval reserves the right to change specifications without prior notification.

Optimizing installation

Installation specifications

To ensure correct installation, Alfa Laval technicians provide

drawings with optimized positioning of the machine, with

details of location, piping and pressure/flow requirements,

based on the customers specific tank dimensions.

Process designThe unique Alfa Laval design includes process parameters

and computerized TRAX simulation. This advanced

software provides an analysis of cleaning shadows and

generates customized patterns for the vessel concerned.

Operational procedures

Our extensive experience in this field means that Alfa Laval is

able to suggest the best possible operating procedures for

this kind of tank cleaning equipment.

Free on-site trial

Before installing your new tank cleaning system, let Alfa Laval

provide you with a trial model that you can try out for yourself

entirely free of charge.

Alfa Laval tank cleaning machines in operation.

Ethanol tank ID = 6000 mm (19.6 ft), H = 9000 mm (29.5 ft)

Time = 14.7 min Water used = 5152 l (1361 US gal.)

TRAXand installation example

Wetting

intensity

[l/m]

2.5

3.0

3.7

4.4

5.4

6.5 7.9

9.6

12

14

17

21

25