Biogas always contains water vapor. During combustion in cogeneration units or boilers, water condensing inside the equipment along with the aggressive chemicals contained in biogas can lead to significant corrosion damage. The consequences are costly repairs and prolonged equipment downtime. This can be prevented effectively by dehydrating the biogas, and biogas dehumidifiers are used for this purpose.
These devices rapidly lower the temperature of the biogas flowing through them, which causes condensation of water vapor. The condensate is thus separated from the biogas and removed through a siphon. When the temperature is raised again in the recuperator (gas/gas exchanger), biogas with very low relative humidity is obtained, and therefore a much better quality fuel.
The use of a gas drying system can significantly extend the life of CHP modules and reduce service costs.
Operating parameters
- Biogas flow rate: 100 - 6,000 m3/h
- Gas temperature at inlet: 20 - 55°C
- Gas temperature at outlet: 3 - 50°C
- Gas pressure at inlet: -100 to + 500 mbar
- Ambient temperature: -20 to + 45°C
Benefits
- Increase efficiency of gas gensets and cogeneration systems
- Reduction of oil consumption in cogeneration equipment
- No condensation of condensate in the gas line
- Elimination of corrosion caused by condensate inside the equipment
- Reducing the number of shutdowns and reducing the downtime of gas chillers and cogeneration systems
- Reduction of operating costs of cogeneration equipment
- Increased efficiency and service life of activated carbon filters
- Reduction of particulate content in biogas
Application
- Agricultural biogas plants
- Municipal and industrial wastewater treatment plants
- Chemical industry
- Paper industry
- Landfills
- Food industry
