C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
23/360
C07C 7/11 (2006.01) B01D 53/14 (2006.01)
Patent
CA 1162719
A B S T R A C T A PROCESS FOR THE REMOVAL OF ACID GASES FROM A GAS MIXTURE MAINLY CONSISTING OF METHANE A process for the removal of acid gases form a gas mixture mainly consisting of methane by treating said gas mixture in a first step with a liquid mixture which contains a physical absorbent (e.g. sulfolane) and a chemical absorbent (e.g. a tertiary amine such as methyl diethanolamine), in which first step H2S is se- lectively removed in respect of CO2, and consecutively treating the resultant gas mixture in a second step with a different liquid mixture which contains a physical absorbent (e.g. sulfolane) and a chemical absorbent (e.g. a primary or secondary amine such as di-isopropanol amine), in which second step the remaining acid gases are virtually completely removed.
370525
Shell Canada Limited
Smart & Biggar
LandOfFree
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