B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
23/344, 23/356
B01D 53/14 (2006.01) B01D 53/52 (2006.01) C07C 7/11 (2006.01) C10K 1/14 (2006.01) C10K 1/16 (2006.01)
Patent
CA 1205276
ABSTRACT OF THE DISCLOSURE A process for removal of CO2 and, if present H2S, from a gas mixture, in which a) the gas mixture is contacted at an elevated pressure of at least 5 bar 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).
403167
Mcewan Malcolm W.
Van Der Pas-Toornstra Hilde M.
Shell Canada Limited
Smart & Biggar
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