| abstract |
A process for removal of CO2 and, if present H2S, from a gas mixture, in which a) the gas mixture is contacted at elevated pressure countercurrently with a solvent comprising a tertiary amine and a physical absorbent; b) the loaded solvent obtained is flashed to a pressure higher than the total partial pressure of CO2 and H2S present in the loaded solvent at the prevailing temperature; c) the loaded solvent obtained in step b) is flashed to a pressure below the total partial pressure of CO2 and H2S present in the loaded solvent at the prevailing temperature, and semi-lean solvent obtained in step c) is, optionally after all or part thereof has been totally regenerated, used as solvent in step a). |