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:
Oct. 31, 2006
Filed:
Jul. 01, 2004
Applicants:
Robert R French, Wellington, CO (US);
Robert A. Reeves, Arvada, CO (US);
Inventors:
Robert R French, Wellington, CO (US);
Robert A. Reeves, Arvada, CO (US);
Assignee:
GTL Energy, Wellington, CO (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C10L 9/00 (2006.01); C10L 9/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
The ash content of raw coals, lignite, and other carbonaceous materials is reduced by leaching the high-ash material with an aqueous acidic waste product produced by a Fischer-Tropsch reaction. The acidic aqueous waste is mixed with coal and process conditions are described. The claim takes advantage of using otherwise uneconomic coal, lignite or other carbonaceous material by upgrading the material to a suitable feedstock for combustion in a power plant or gasifier.