Biogas upgrading to natural gas quality
APROVIS supplied a gas cooling unit FriCon with three chillers and a gas re-heater for a biogas treatment plant in Europe.
In the country of installation, the amount of refrigerant per chiller is limited by legislation. As a result, several small chillers were used in this project. The efficiency is ensured by a control system, which allows changing of the setpoint of the three chillers depending on operation mode. The plant feeds 2000 Nm³ of upgraded biogas per hour into the gas grid.