Treatment of gases

Details Treatment of gases Treatment of gases

1994-08-19

1996-01-23

Straub, Gary P.

Chemistry of inorganic compounds

Sulfur or compound thereof

Elemental sulfur

4235741, 4235768, 423222, 423224, 4232421, 42324401, B01D 5350, B01D 5352

Patent

active

054863457

ABSTRACT:
An improved oxygen-enhanced Claus process for the recovery of sulphur from an acid gas comprising hydrogen sulphide as a furnace in which a part of the hydrogen sulphide content of the acid gas is burned to form sulphur dioxide. The sulphur dioxide then reacts with residual hydrogen sulphide to form sulphur vapor which is condensed out of the resulting gas mixture. One part of the residual gas mixture is then subjected to catalytic stages to bring the reaction between the hydrogen sulphide and sulphur dioxide close to completion. The improvement resides in sending a second part of the gas mixture to an incinerator to convert all its hydrogen sulphide content to sulphur dioxide. After removal of water, the sulphur dioxide is returned to the furnace.

REFERENCES:
patent: 4798716 (1989-01-01), Palm
patent: 4844881 (1989-07-01), Gens et al.
patent: 5294428 (1994-03-01), Watson
patent: 5352433 (1994-10-01), Watson

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