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. 31, 1978
Filed:
Jan. 22, 1976
Applicant:
Inventor:
Gerard C Sinke, Midland, MI (US);
Assignee:
The Dow Chemical Company, Midland, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C10L / ; C10B / ;
U.S. Cl.
CPC ...
44 / ; 201 17 ;
Abstract
A process of reducing the total sulfur content of coal is disclosed. The process comprises hydrogenating the coal to remove at least a portion of the recoverable sulfur combined as pyritic sulfur. The hydrogenated coal is subsequently contacted with a sufficient amount of an aqueous inorganic acid solution to remove at least a portion of the remaining sulfur initially combined as pyritic sulfur.