Process of removing hydrogen sulfide from exhaust gas

Details Process of removing hydrogen sulfide from exhaust gas Process of removing hydrogen sulfide from exhaust gas

1988-09-20

1990-06-12

Doll, John

Chemistry of inorganic compounds

Sulfur or compound thereof

Elemental sulfur

422176, 423415A, 4235768, 4236481, 423650, 431 8, 431 10, C01B 1704, C01B 304, C01B 3118

Patent

active

049331639

ABSTRACT:
A feed gas which contains H.sub.2 S is combusted with oxygen and air in at least one burner, which opens into a combustion chamber. The resulting gas mixture contains H.sub.2 S and SO.sub.2 and is intended to be converted to elementary sulfur by the Claus process. The combustion chamber is supplied with oxygen through a central tube of the burner, with the H.sub.2 S-containing feed gas through a second tube, which coaxially surrounds the central tube, and with air through a coaxial outer tube. The feed gas supplied to the burner contains H.sub.2 S and at least 5% by volume hydrocarbons or CO.sub.2. Velocities of flow of oxygen of 50 to 250 m/sec. and of the H.sub.2 S-containing feed gas of 10 to 30 m/sec. are adjusted at the outlet of the burner. Temperatures in the range from 2000.degree. to 3000.degree. C. are generated in the core zone of the burner flame. A gas mixture which contains at least 2% by volume CO and at least 8% by volume H.sub.2 and is at temperatures from 1350.degree. to 1650.degree. C. is withdrawn from the combustion chamber.

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