process for removal of sulphur containing compounds in an exhaust gas, such as a claus schwefelanlage exist, with recovery of these compounds as sulfur

摘要

PCT No. PCT/FR94/00284 Sec. 371 Date Feb. 14, 1995 Sec. 102(e) Date Feb. 14, 1995 PCT Filed Mar. 16, 1994 PCT Pub. No. WO94/21359 PCT Pub. Date Sep. 29, 1994A process is disclosed for the removal of sulphur compounds from a residual gas so as to obtain a purified gas stream substantially free of sulphur compounds, which process comprises subjecting the residual gas to a combined hydrogenation and hydrolysis, cooling the gas to a temperature whereby water vapor in the gas is not condensed, mixing the gaseous effluent with a gas containing free oxygen, contacting the cooled gaseous effluent and the gas containing free oxygen with a catalyst for selective oxidation of H2S to sulphur, and depositing substantially all of the sulphur formed on the catalyst.