Facility for recovering co2 contained in a feed gas flow

A facility for recovering CO2 contained in a feed gas stream comprising at least 10 ppm NOX, between 10% and 50% by volume of CO2, N2, water and O2 with a minimum concentration of 0.1 mol %, the NOX comprising NO and NO2, the facility comprising:

• a compression assembly arranged to compress the feed gas stream, the compression assembly comprising a plurality of compression stages and a plurality of heat exchangers arranged to cool the gas stream compressed by the compression stages, this compression assembly being arranged to compress the gas stream to a pressure of greater than 1.5 bar abs,
• a drying space, preferably located downstream of the compression assembly, for drying the feed gas stream that has passed through the compression assembly, thus configured to obtain a dried gas stream (FGS),
• an adsorption treatment unit comprising at least one adsorbent chosen for promoting the oxidation of the NO to NO2, the drying space being part of a dryer located upstream of the treatment unit, the treatment unit being arranged to treat the dried gas stream coming from the dryer, thus configured to produce a gas stream enriched in CO2.

A process for recovering CO2 contained in a feed gas stream comprising at least 10 ppm NOX, between 10% and 50% by volume of CO2, N2, water, and O2 with a minimum concentration of 0.1 mol %, the NOX comprising NO and NO2, the process comprising the following steps:

• compressing, with the aid of a compression assembly, the feed gas stream,
• then drying, through a drying space, the compressed feed gas stream, so as to obtain a dried gas stream (FGS),
• with the aid of an adsorption treatment unit comprising at least one adsorbent chosen for promoting the oxidation of the NO to NO2, the drying space being part of a dryer located upstream of the treatment unit, treating the dried gas stream coming from the dryer, thus configured to produce a gas stream enriched in CO2.