Process for treating a gas containing hydrogen sulphide and sulp

Details Process for treating a gas containing hydrogen sulphide and sulp Process for treating a gas containing hydrogen sulphide and sulp

1997-09-16

1999-09-14

Straub, Gary P.

Chemistry of inorganic compounds

Sulfur or compound thereof

Elemental sulfur

4235741, 4235762, B01D 5350, B01D 5352

Patent

active

059519614

ABSTRACT:
In a process and apparatus for treating a gas containing hydrogen sulphide and sulphur dioxide, the gas is contacted with an organic solvent (1)for example, a polyalkylene glycol, containing a catalyst for example, an alkaline salt of a week organic acid, in at least one gas-liquid reactor contactor (2) and a gas (20) substantially no longer containing hydrogen sulphide and sulphur dioxide is recovered. The effluent contains sulphur vapor. It is cooled by mixing with a solvent-water mixture (14) or by cooled solvent in a cooling zone (7) to produce a suspension of sulphur crystals in the solvent. The crystallised sulphur is separated from the solvent in a separation zone (30) and the cooled solvent is recycled (13). An effluent (17) which is free of sulphur gas is obtained.

REFERENCES:
patent: 2881047 (1959-04-01), Townsend
patent: 3796796 (1974-03-01), Deschamps et al.
patent: 3832454 (1974-08-01), Renault et al.

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