Apparatus for burning hydrogen sulphide

Details Apparatus for burning hydrogen sulphide Apparatus for burning hydrogen sulphide

1980-10-23

1986-06-24

Chiesa, Richard L.

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Inorganic sulfur acid or anhydride producing type

422195, 423573G, C01B 1750

Patent

active

045966990

ABSTRACT:
A process to produce sulphur from two acid gases both containing hydrogen sulphide and one of which contains ammonia, using a modified Claus technique.
The acid gas containing ammonia is burnt in the presence of air under substoichiometric conditions in a first heat-reaction chamber, while the ammonia-free acid gas is burnt in a second heat-reaction chamber, forming a series with the first chamber, with the right quantity of air to provide a molar ratio of H.sub.2 S to SO.sub.2 of approximately 2/1 at the catalytic reaction stage inlet. The mixed effluents from both heat-reaction chambers may pass through a high-temperature residence chamber before being conveyed to the heat-recovery stage.
Gas effluents from the heat-reaction stage contain H.sub.2 S and SO.sub.2 in the right ratio for the catalytic reaction stage, and no hydrocarbons or harmful quantities of NH.sub.3 and NO.

REFERENCES:
patent: 2030885 (1936-02-01), Maxim
patent: 2867506 (1959-01-01), Roberts
patent: 3661534 (1972-05-01), Reed
patent: 4035158 (1977-07-01), Scott et al.

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