PROCESS FOR THE REMOVAL OF THE SULFUR COMPOUNDS H2S, SO2, COS AND / OR CS2 CONTAINED IN A SULFUR PROCESSING WASTE GAS WITH RECOVERY OF SAID COMPOUNDS IN THE FORM OF SULFUR

摘要

The invention concerns a method consisting in the following steps: The waste gas (6) is catalytically (1) hydrolyzed to form a hydrolyzed gas (15) containing H2S and SO2, and free of COS and CS2. After cooling (17), the hydrolyzed gas is introduced in one (2a) of two CLAUS catalytic zones (2a, 2b) mounted parallel, the other catalytic zone (2b) being for regenerating, then cooling. The regeneration is carried out, in open circuit, with a gas stream (19, 36) drawn from the gas (15) before it is cooled (17), the regeneration gas effluent (24b) being re-injected (29, 20) into the gas (15), between drawing (19) and cooling (17). The cooling of the reactor (2b) is carried out, in open circuit, with a gas stream (11, 36) drawn from the waste gas (6), the cooling gas effluent (24b) being re-introduced (29, 13) into the waste gas (6) between drawing (11) and heating (8).