From: Methanation of CO2 - storage of renewable energy in a gas distribution system
Component
Fraction
Methane (CH4)
>96 vol.%
Hydrogen (H2)
<2 vol.%
Carbon dioxide (CO2)
<3 vol.%
Carbon monoxide (CO)
<30 ppm
Water (H2O)
Dew point < −8°C (70 bar)