Process of scrubbing fuel synthesis gases to remove acid gases and organic sulfur compounds

Claim 1

In a process for scrubbing fuel and synthesis gases to remove hydrogen sulfide, carbon dioxide and organic sulfur compounds therefrom wherein the gas to be treated to produce substantially pure gas is passed through an absorption zone at a superatmospheric pressure and at a temperature of above 0° C. up to 100° C. and then through a scrubbing zone to recover entrained absorbent, the absorption zone being supplied with a circulating absorbent comprising a primary aliphatic alcohol, one or more alkanolamines and eventually water, whereafter the absorbent is regenerated by flashing and heating, the improvement which comprises washing the gases in the absorption zone using an absorbent consisting essentially of methanol and 0.2 to 4 moles of an alkanolamine per liter of absorbent, flashing the rich absorbent and heating it to a boiling temperature not higher than 100° C., cooling the absorbent and recirculating it to the absorption zone.