Process for the removal of h.sub.2s and co.sub.2 from a gas...

Details Process for the removal of h.sub.2s and co.sub.2 from a gas... Process for the removal of h.sub.2s and co.sub.2 from a gas...

B - Operations, Transporting

01

D

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B01D 53/14 (2006.01) B01D 53/52 (2006.01) C01B 17/16 (2006.01) C10K 1/14 (2006.01) C10K 1/16 (2006.01)

Patent

CA 1182280

A B S T R A C T A process for removal of H2S and CO2 from a gas mix- ture in which a) the gas mixture is contacted at elevated pressure countercurrently with lean solvent which comprises a tertiary amine and 2 physical absorbent; b) the loaded solvent obtained is flashed; c) the flash gas set free in step b) is contacted counter- currently with lean solvent under conditions which are selective for H2S removal; d) part of the loaded solvent obtained after flashing is stripped with the gas obtained in step c); e) the stripped solvent obtained in step d) is introduced as semi-lean solvent in step a); f) the gas obtained in step d) is contacted counter- currently with lean solvent under conditions which are selective for H2S removal, and g) loaded solvent obtained in steps c), b) and f) is re- generated to yield lean solvent and an H2S-containing gas suitable for use in a Claus process.

403380

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