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:
Apr. 17, 1984
Filed:
Jan. 31, 1983
Applicant:
Inventors:
David Sageman, San Rafael, CA (US);
David S Mitchell, San Rafael, CA (US);
Assignee:
Chevron Research Company, San Francisco, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
C10J / ; C10J / ;
U.S. Cl.
CPC ...
4819 / ; 48202 ;
Abstract
A coal gasification process is disclosed wherein two portions of heat transfer material are introduced into the reaction vessel at different locations and different temperatures. Steam is passed upwardly through the vessel to react with the carbonaceous material to form a hot char and a gaseous product, wherein the heat necessary for the coal gasification reaction is supplied by both the first portion of heat transfer material and the second portion of heat transfer material. Then the hot char and gaseous product are cooled by contact with the first portion of heat transfer material.