METHOD FOR REMOVING SULFUR COMPOUNDS FROM CO (ARROW DOWN), 2 (ARROW DOWN) GASES

摘要

The selective removal of H2S, COS, CS2, and mercaptans from natural gases or synthesis gases also containing CO2 is achieved by using an absorber solution containing specified tertiary amines and/or specified sterically hindered primary and/or secondary amines dissolved in organic solvent(s) and/or water, and mixing the gas leaving the absorber with regenerated absorber solution, then cooling the mixture formed, and finally separating the purified gas from the absorber solution which is fed to the top of the absorber.