The biomethane from dry biomass-to-gas production process

Biomethane from dry biomass-to-gas is produced according to a four-stage process.

• Gasification: lignocellulose biomass is turned into synthesis gas via the effect of a thermo-chemical conversion process.
• Purification: the synthesis gas obtained is treated in order to eliminate tars and inorganic compounds.
• Methanation: the synthesis gas is turned into dry biomass-to-gas through a catalytic conversion process that uses a metal catalyst .
•  The biomethane is then conditioned via gas separation processes  in order to be made compliant with the standard specifications for network natural gas.

Some of these technologies, which are perfectly controlled in a laboratory, are currently at the industrial development stage, and are being adjusted for biomass.

ENGIE and its partners aim to contribute major innovations to the process from the standpoint of the energy-efficiency, environmental benefits and financial attractiveness of this energy channel.