REMOVAL OF H2S AND CO2 FROM GASES

摘要

Process for the removal of H2S and CO2 from a gas by contacting with a solution of the Fe(III) chelate of nitrilotriacetic acid in an absorbent comprising diethylene glycol monoethyl ether. The H2S is converted to sulphur and the CO2 is absorbed to produce a purified gas stream, and the Fe(III) chelate is converted to the Fe(II) chelate. The process may include sulphur removal and regeneration of the absorbent and the Fe(III) chelate.