Biomethane upgraders
Biogas to biomethane upgrade is used for purification of biogas and landfill gas from CO₂. Membrane technology allows to achieve the biomethane and bioCNG quality, required by the gas grid operators, with the minimum energy consumption.
VPSA (Vacuum Pressure Swing Adsorption) systems upgrade 450–4.000 Nm³/h of raw biogas to biomethane. Adsorption with vacuum regeneration removes CO₂; gas conditioning removes hydrogen sulphide and moisture. The plant includes compression, gas analysis and automatic control. Biomethane can be supplied to public gas grids, filled into cylinders at 250–300 bar or delivered in liquefied form. Compression to cylinder filling pressure and liquefaction require additional equipment.
Membrane biogas to biomethane upgrader. Biogas flow of 3200 Nm³/h. Biomethane purity ≥ 97%.
CO2 removal from biogas using membranes. Biogas flow of 2000 Nm³/h. CO2 removal with 99% efficiency. Biomethane purity 97%. CO2 purity 99%.