Product and Process Description

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SILOXA gas wash dryer for biogas,
landll gas and sewage gas, GKW model
Gas wash drying
Using this process offers clear advantages:

Water cooler

Water inlet

Gas outlet

Wash dryer

– Efcient drying of the biogas,
landll gas and/or sewage gas
– Measurable improvement in gas quality
– Robust, low-maintenance technology
– Minimal pressure loss
– Unaffected by load uctuations
Sizes/system components

Gas inlet

SILOXA's GKW gas wash dryers are available as
standard versions for three performance classes of
gas utilisation systems. If required, however, systems
are also available for almost any other gas ow rate.
Model

Product description
The SILOXA gas wash dryer is a compact gas conditioning module for drying biogas, landll gas and
sewage gas and for removing other harmful gas contaminants.

Gas ow rate

Output of gas utilisation
system at 60 % CH 4

GKW 180

180 Nm3/h

GKW 320

181 to 320 Nm /h

up to approx. 550 kW

GKW 500

321 to 500 Nm /h

up to approx. 1050 kW

up to approx. 350 kW
3
3

Control
The gas wash dryer unit is supplied complete with packed column counter current unit and full cooling unit.
All components are mounted on a steel base frame,
along with their pipes and electrical cables. All system
components that perform the cooling and supply the
cooling agent are properly insulated to prevent the
formation of water condensation. The device features
an electric microprocessor control system that ensures automatic, reliable and safe operation of the
wash dryer.
In the gas wash dryer, the gas, which is saturated
with water vapour, ows upwards through the packed
column in the opposite direction to the cold water. In
this packing material layer, intensive heat and substance exchange takes place between the gas and
the cold water. The gas cools down and its oversaturated water vapour content condenses directly into
the downwards-owing washing water. Solid and
liquid gas contaminants (dust, particles) are completely
washed out during this process and gaseous contaminants (H2S, ammonia) are reduced according to
their water solubility.

The GKW gas wash dryer from SILOXA is safe and
convenient to operate. The central control component
is the control panel of the water cooler.
Design features (basic version)
– Frame and base plate
– Gas drying system
– Water cooler
– Condensate trap
– Control cabinet
– Cold insulation
– Factory assembly
– Technical documentation

Siloxa Engineering AG
Katernberger Strasse 107 | 45327 Essen | Germany
Tel. +49 (02 01) 2 89 51-0 | Fax +49 (02 01) 2 89 51-29
E-mail: vertrieb@siloxa.com | Web: www.siloxa.com