Sulfur compounds present in the residual gas from the sulfur plant H ▲ under 2 ▼ S, SO ▲ under 2 ▼, methods of COS and / or CS ▲ under 2 ▼ was recovered in the sulfur mode will be substantially entirely removed

摘要

(57) Abstract The waste gas, the device (1) in inside the hydrolysis catalytic converter in order to transform in H₂ S and, and making COS and CS CONTACT₂ with the H₂ S oxidation catalytic converter optionally under existing of the air current, it contains H₂ S and SO_2, but adding water which does not contain COS or CS_{2 the} gas (17) resolution profit, at that time and in the gas (17) (H₂ S) and (SO₂) capacity concentration, (H₂ S) the 2 (SO₂) is higher than 0.2%, but in order not to exceed 0.5%, it controls. This gas (17), reacting with H₂ S and SO_{2, it} gives the sulfur, H₂ S it is contained it supplies in the Claus device (3a) which generates the gas (25a) which was refined substantially as the only sulfur chemical compound. This gas (25a) with the air of the excessive tonnage, is injected in the contact maker (4a) where among those H₂ S is oxidized to all sulfur with 80 - the 100. The sulfur chemical compound in the waste gas substantially is recovered entirely as the sulfur.