Regenerative process for removing mercaptans contained in a gas

摘要

PCT No. PCT/FR86/00157 Sec. 371 Date Jan. 2, 1987 Sec. 102(e) Date Jan. 2, 1987 PCT Filed May 6, 1986 PCT Pub. No. WO86/06649 PCT Pub. Date Nov. 20, 1986.A regenerative process is provided for removing mercaptans contained in a gas by means of an absorbing agent based on at least one metal oxide capable of chemically fixing the mercaptans. The process comprises an absorption step to fix the mercaptans on the absorbing agent and a regeneration step for regenerating the absorbing agent laden with sulphur-containing products resulting from said fixation. The regeneration is carried out by sweeping the absorbing agent with a hot inert gas to bring the absorbing agent to a temperature between 250 DEG and 500 DEG C. and desorb the sulfur-containing products, and by contacting the absorbing agent thus treated with a gas containing free oxygen to reoxidize the absorbing agent and by cooling the reoxidized absorbing agent by sweeping with a cold inert gas.