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U.S. Department of Energy
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Process for converting a carbonaceous material to lower paraffinic hydrocarbons and monocyclic aromatic hydrocarbons

Patent ·
OSTI ID:6188765
A carbonaceous material is subjected, in admixture with a hydrogenated recycle oil, to hydrogenation in two successive steps at respective temperature ranges of 350/sup 0/-470/sup 0/C. and 600/sup 0/-1000/sup 0/C., under a pressure of at least 20 bars, the resulting product being separated into a carbonaceous solid residue, which is subsequently treated with oxygen and steam so as to obtain a hydrogen-containing reducing gas to be used in the second of the two hydrogenation steps, a fraction distilling in major part above 150/sup 0/C. which, after hydrogenation, forms the recycle oil admixed with the starting carbonaceous material, and a fraction containing the desired lower paraffinic hydrocarbons and monocyclic aromatic hydrocarbons, distilling in major part below 150/sup 0/C.
Assignee:
Institut Francais du Petrole (France)
Patent Number(s):
US 4519895
OSTI ID:
6188765
Country of Publication:
United States
Language:
English