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:
May. 06, 1980
Filed:
Dec. 05, 1978
William E Clark, Bethel Park, PA (US);
Continental Oil Company, Stamford, CT (US);
Abstract
A method for converting calcium sulfoxy compounds selected from the group consisting of CaSO.sub.x and Ca(HSO.sub.x).sub.2 and their hydrates wherein x is 3 or 4 into calcium carbonate, the method consisting essentially of; converting the Ca(HSO.sub.x).sub.2 compounds into CaSO.sub.x compounds by reacting the Ca(HSO.sub.x).sub.2 compounds with calcium carbonate in the presence of water, thereafter reacting the CaSO.sub.x compounds with ammonia and carbon dioxide in the presence of water to produce NH.sub.4 (HSO.sub.x) wherein x is 3 or 4 and calcium carbonate, thereafter separating the NH.sub.4 (HSO.sub.x) and calcium carbonate and reacting the NH.sub.4 (HSO.sub.x) with carbon to produce ammonia, hydrogen sulfide and carbon oxides.