Upgrading shale oil by a combination process

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United States of America Patent

PATENT NO 4623444
SERIAL NO

06749482

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A method for reducing the nitrogen content of shale oil is disclosed. The method comprises distilling shale oil to form a distillate containing lighter shale oil compounds and a residue containing heavier compounds. Nitrogen-containing compounds are extracted from the distillate to form a first nitrogen-lean raffinate and a first nitrogen-rich extract. Nitrogen-containing compounds are also extracted from the residue to form a second nitrogen-lean raffinate and a second nitrogen-rich extract. The second nitrogen-lean raffinate is hydro-treated to further reduce its nitrogen content.

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Patent Owner(s)

  • OCCIDENTAL OIL SHALE, INC.;OCCIDENTAL SHALE INC.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Che, Stanley C Los Alamitos, CA 4 281
Madgavkar, Ajay Katy, TX 8 696

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