PROCESS FOR THE REMOVAL OF CO2 AND, WHEN PRESENT, H2S FROM NATURAL GASES

摘要

CO2 and, where relevant, H2S are removed from natural gases which contain CO2 and may or may not contain H2S by a process in which the said natural gases are treated, in an absorption stage at from 40 DEG to 100 DEG C., with an aqueous absorption liquid containing from 20 to 70% by weight of methyldiethanolamine, the treated natural gases are taken off at the top of the absorption stage, the aqueous absorption liquid laden with CO2 and, where relevant, H2S is taken off at the bottom of the absorption stage and then regenerated in one or more flash stages, and the regenerated absorption liquid is recycled to the absorption stage.