287
91-96 (Ryckebosch , 300 600
Product gas
CH4 : 96-98% CO2 :<2% H2S : < 4 ppm
Compressors
Raw biogas CH4, CO2, H2S
6.2
Offgas
CH4 and CO2
Heat exchanger
Regeneration
Lean amine
Absortion
Steam
CO2 rich amine
- Pressure swing adsorption, PSA) 3.7 3.4 3.8 4 6.3