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. 09, 1985
Filed:
Oct. 15, 1982
Applicant:
Inventor:
Christopher W Kuehler, Larkspur, CA (US);
Assignee:
Chevron Research Company, San Francisco, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
C10G / ; C10G / ;
U.S. Cl.
CPC ...
208 10 ; 208 / ;
Abstract
A process for liquefying coal in which a slurry comprising a petroleum or petroleum-derived solvent and particulate coal is heated in a dissolution zone to substantially dissolve the coal and produce a first effluent containing undissolved solids to which petroleum residuum is added to produce a second effluent which is distilled under reduced pressure. The process eliminates the need for physical solids separation such as filtration or centrifugation and is most advantageously employed in high-severity coal liquefaction.