Method for recovery of CO2 from gas streams

摘要

The present invention relates to a process for recovering CO 2 from a feed gas stream comprising treating the feed gas stream with a regenerated absorbent comprising at least one tertiary amine absorbent having a pK a for the amino function of from about 6.5 to about 9 in the presence of an oxidation inhibitor to obtain a CO 2 rich stream, maintaining a sufficient oxidation inhibitor concentration in the absorbent to essentially prevent the oxidation of the absorbent by molecular oxygen and subsequently treating the CO 2 rich stream to obtain the regenerated absorbent and a CO 2 rich product stream.