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:
Dec. 01, 1998
Filed:
Mar. 17, 1997
Chi S Wang, Woodridge, IL (US);
Other;
Abstract
A process using high-temperature thermal dissociation to recover hydrogen and salable sulfur from industrial waste streams containing hydrogen sulfide (H.sub.2 S) is disclosed. Thermal dissociation occurs in a thermoelectric reactor at temperatures up to 1900.degree. C. Waste energy from the high-temperature reactor is recovered and used to preheat the H.sub.2 S-laden stream before entering the high-temperature reactor. Sulfur is separated out in a condenser. The process also includes a scrubber to eliminate the carryover of liquid sulfur mists or aerosols, and a membrane to separate the hydrogen from the dissociated product stream. Trace amounts of unconverted H.sub.2 S are recycled through the process for further dissociation.