Alkanolamine gas treating composition and process

摘要

A novel alkanolamine gas treating composition and method for purifying a gas stream containing acid gas impurities. The composition consists essentially of an alkanolamine solvent in an aqueous solution with antimony wherein said alkanolamine solvent includes at least about 1% by weight of methydiethanolamine (MDEA) and at least about 5% monoethanolamine (MEA) by weight of the total solution, and with said antimony present in a concentration of at least about 100 ppm. The combination of antimony and MDEA inhibits corrosion and retards solvent degradation.