Process for the production of sulphur from at least one sour gas

Details Process for the production of sulphur from at least one sour gas Process for the production of sulphur from at least one sour gas

1994-08-22

1996-04-16

Straub, Gary P.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Carbon dioxide or hydrogen sulfide component

423222, 423224, 423230, 42324405, 4232453, 4235671, 4235731, 4235741, 4235768, B01D 5350, B01D 5352, B01D 5375

Patent

active

055080138

ABSTRACT:
A process is provided for the production of sulphur from at least one sour gas containing H.sub.2 S and a gaseous or liquid fuel effluent, of the type comprising a thermal reaction step, wherein the thermal reaction step is conducted by performing the combustion of the gaseous or liquid fuel effluent in a first zone of the thermal reaction stage with a quantity of a gas containing free oxygen in excess in relation to the theoretical quantity needed for a complete combustion of the fuel effluent, the excess being smaller than the theoretical proportion of gas containing free oxygen needed to oxidize to SO.sub.2 approximately one third of the H.sub.2 S of the total flow of sour gas into the combustion fumes of the fuel effluent which are present in the first zone of the thermal reaction stage, by burning incompletely a second stream of sour gas in a second zone of the thermal reaction stage, which receives the gaseous products from the first zone, with a controlled quantity of gas containing free oxygen, such that the H.sub.2 S:SO.sub.2 molar ratio in the gases originating from the catalytic reaction step has a predetermined value, and by adjusting the flow rates of the first and second sour gas streams so that the temperature obtained during the incomplete combustion of the second sour gas stream in the second zone of the thermal reaction stage has a value higher than 850.degree. C.

REFERENCES:
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patent: 3447903 (1969-06-01), Wiewiorowski
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patent: 3970743 (1976-07-01), Beavon
patent: 4035158 (1977-07-01), Scott et al.
patent: 4038036 (1977-07-01), Beavon
patent: 4069020 (1978-01-01), Bond et al.
patent: 4100266 (1978-07-01), Smith
patent: 4394119 (1983-07-01), Waller et al.
"Gas Purification" by Riesenfeld et al., 2nd Edition, Gulf Publishing Co, Houston TX, 1974 pp. 370-383.

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