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:
Nov. 01, 1988
Filed:
Apr. 17, 1986
Christiaan P Van Dijk, Houston, TX (US);
W. Bruce Smith and Butler & Binion, Houston, TX (US);
Abstract
The present invention is directed to a process for removing H.sub.2 S from a gaseous stream, preferably a natural gas stream, which comprises forming a buffered aqueous H.sub.2 S stream containing thiosulfate by contacting the gaseous stream with water containing a buffering agent and thiosulfate to remove the H.sub.2 S from the other gases in the gaseous stream; introducing the buffered aqueous H.sub.2 S stream into a reduction section under conditions wherein elemental sulphur is produced and removing an effluent stream from the reduction section; introducing the reduction section effluent into an oxidation section and contacting the effluent with air to react the oxygen in the air with the H.sub.2 S in the effluent stream to produce predominantly thiosulfate, the volume of liquid fed to the oxidation section being in excess of the volume of gas fed, and removing an effluent stream from the oxidation section; separating the effluent stream from the oxidation section into a gas stream and a liquid stream; and treating separately the gas stream and the liquid stream to remove H.sub.2 S from each stream and additionally to recover elemental sulfur from the liquid stream.