The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 11, 2003
Filed:
Apr. 05, 2001
Richard William Watson, Near Ilkley, GB;
Stephen Rhys Graville, Sheffield, GB;
Vijay Ramanand Balse, Chatham, NJ (US);
The BOC Group plc, Windlesham, GB;
Abstract
A feed gas stream containing hydrogen sulphide is subjected in a furnace to reactions in which part of the hydrogen sulphide is burned to form sulphur dioxide, and is which the sulphur dioxide reacts with residual hydrogen sulphide to form sulphur vapor. The sulphur vapor is condensed from the gas stream exiting the furnace in a sulphur condenser . Residual sulphur dioxide is reduced back to hydrogen sulphide by hydrogen in a reactor . Water vapor is removed from the reduced gas in a quench tower to form a water vapor-depleted gas stream. One part of the water vapor-depleted gas stream is sent to an adsorber vessel in which hydrogen sulphide is absorbed in an absorbent. The resulting hydrogen sulphide-depleted gas stream is vented from the vessel as a purge stream. Another part of the water vapor-depleted gas stream and a hydrogen sulphide-rich gas formed by desorbing hydrogen sulphide from the absorbent in a vessel are returned as recycle streams to the furnace