Biogas, syngas, biomethane and landfill gas always contain water vapor in an unsaturated state. During combustion, the water vapor results in considerable corrosion damage to the gas engines and turbines. Malfunctions caused by damage leads to significant downtime and higher repair costs. The use of a gas dehumidification system can considerably extend the engines’ service life and notably reduce maintenance costs.

The condensation of the water vapor in the gas is caused by temperature reduction which in turn results in a dehumidification. The condensate is separated out in a trap installed after the chiller and removed via a siphon. The de-humidification simultaneously results in increased efficiency. The gas dehumidification process presents a cost-effective solution in this context.

Additional application examples are configurations in combination with a reheating stage ahead of activated charcoal filters and feeding into a gas pipeline to prevent subsequent condensation.

For additional energy savings, the gas dehumidification can be enhanced with an extension module comprised of an air cooler and a tubular heat exchanger.

Scope:
Cooler - 16.9 kW
Tubular heat exchanger mounted on a base frame
Design data:
Fluid: Biogas
Flow rate: 500 m³/h
Inlet temperature: max. 35 °C
Outlet temperature: 5 °C
Pressure drop: approx. 10 mbar
Material: 1.4571
Heating unit - 2.9 kW
Tubular heat exchanger mounted on a base frame
Design data:
Fluid: Biogas
Flow rate: 500 m³/h
Inlet temperature: 5 °C
Outlet temperature: 20 °C
Pressure drop: approx. 8 mbar
Material: 1.4571
Required flow temperature for connection to the heating system
min. 70°C at 1 m³/h; other temperatures and flow rates available upon request.
Aermec ANL080AW Chiller
Power: 17.5 kW
Including storage tank and pump
Including crankcase heater
Including low-temperature control
Condensate collector with demister
Mounted on base frame
Condensate separator
Mechanical design
Support frame
Stainless steel base frame
Dimensions (L x W) approximately 3000 x 1250 mm
Insulation
Armacel low-temperature insulation with metal casing for
gas cooler, chiller lines, and condensate collector.