Title: Treatment of combustible gas stream
Application Number: 98120378 Application Date: 1998.09.12
Publication Number: 1214275 Publication Date: 1999.04.21
Approval Pub. Date: 2003.09.24 Granted Pub. Date: 2003.09.24
International Classifi-cation: B01D53/52;C10K1/00
Applicant(s) Name: The BOC Group PLC Address:
Inventor(s) Name: Richard William Watson;Stephen Rhys Graville
Attorney & Agent: wang jihao
Abstract:
    A process and apparatus for recovering sulphur from a combustible gas stream comprising hydrogen sulphide, air, commercially pure oxygen or oxygen-enriched air. The combustible gas stream are fed to a burner which fires into an elongate furnace. A longitudinally extending flame is created which as a relatively oxygen-poor endothermic hydrogen sulphide dissociation region, and a relatively oxygen-rich, intense hydrogen sulphide combustion region. Residual hydrogen sulphide reacts with sulphur dioxide formed by the combustion to produce sulphur vapour. The furnace has an aspect ratio of about 8:1. The flame diverges from its root to occupy at its maximum cross-sectional area at least about 80% of the cross-sectional area of the furnace interior coplanar therewith.
Time: 10