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Hydrogen transfer solvent extraction of coal
T989004 Hydrogen transfer solvent extraction of coal
Patent Drawings:Drawing: T989004-2    
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Inventor: Gorin
Date Issued: December 4, 1979
Application: 05/969,752
Filed: December 14, 1978
Inventors: Gorin; Everett (San Rafael, CA)
Assignee: Continental Oil Company (Stamford, CT)
Primary Examiner:
Assistant Examiner:
Attorney Or Agent:
U.S. Class: 208/416; 208/431
Field Of Search:
International Class:
U.S Patent Documents:
Foreign Patent Documents:
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Abstract: A coal liquefaction process is provided in which a hydrogen donor solvent is used in the liquefaction of the coal. The process is designed to maintain the hydrogen donor solvent in balance by hydrogenation of the spent hydrogen donor solvent and selected precursors of the hydrogen donor solvent which are generated in selected steps of the overall liquefaction process. The principal sources of the desired hydrogenatable precursors are a hydrogenated solids-free and benzene insolubles-free portion of the coal extract, and particularly the coker distillates generated by coking a non-distillable hydrocracked fraction of said hydrogenated solids-free and benzene insolubles-free portion.
Claim:
Description:
 
 
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