C - Chemistry – Metallurgy – 10 – G
Patent
C - Chemistry, Metallurgy
10
G
196/5.9
C10G 1/04 (2006.01) C10G 1/06 (2006.01)
Patent
CA 1091176
ABSTRACT OF THE DISCLOSURE A process for liquefying a particulate coal feed to produce useful petroleum-like liquid products, by steps which include: (a) contact- ing said coal feed with a hydrogen donor solvent at temperature and pressure sufficient to hydroconvert and liquefy the coal, (b) fractionating the liquid product from step (a) into fractions inclusive of a liquid fraction which contains at least 30 weight percent hydrogen donor compounds, particularly those fractions boiling within about the 350-850°F. range, (c) hydrogenating said liquid fraction in a hydrogenation zone, (d) adding to said liquid frac- tion a solvent characterized as a low molecular weight heterocyclic oxygen or heterocyclic sulfur compound containing, within a molecule, from 2 to about 6 fused rings, one or more of which is a five- or six-membered heterocyclic ring having 4 to 5 carbon atoms and from 1 to 2 atoms of - oxygen or sulfur, and (e) recycling the hydrogenated liquid solvent mixture to said coal liquefaction zone.
267855
Borden Ladner Gervais Llp
Exxon Research And Engineering Company
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