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:
Jan. 09, 1979
Filed:
Apr. 25, 1974
Herbert E Nuttall, Jr, Albuquerque, NM (US);
Allan S Sass, Los Angeles, CA (US);
Occidental Petroleum Corporation, Los Angeles, CA (US);
Abstract
Finely divided, sulfur bearing carbonaceous materials are carried by hydrogen in counter-current flow at elevated temperatures to the flow of relatively large, metal oxide, hydrogen sulfide accepting pellets. The sulfur contained in the carbonaceous material reacts with the carrier hydrogen to form hydrogen sulfide which, in turn, reacts with the metal oxide to form the corresponding metal sulfide and water. The water and unreacted carrier hydrogen are then separated from the desulfurized carbonaceous material and following separation of water from the residual hydrogen, the hydrogen is recycled with make up hydrogen at elevated pressures to the desulfurization zone. The formed metal sulfide pellets are removed from the base of the desulfurization zone and oxidized back to the oxide state for recycle back to the opposed end of the desulfurization zone.