Method of hydrogenating coal liquid

Details Method of hydrogenating coal liquid Method of hydrogenating coal liquid

C - Chemistry, Metallurgy

10

G

196/5.3

C10G 1/00 (2006.01) C10G 1/06 (2006.01) C10G 1/08 (2006.01) C10G 47/26 (2006.01) C10G 47/34 (2006.01)

Patent

CA 1115225

ABSTRACT OF THE INVENTION Coal liquid having a dissolved transition metal, catalyst as a carbonyl complex such as Co2(CO8) is hydrogenated with hydrogen gas or a hydrogen donor. A dissociating solvent contacts the coal liquid during hydrogenation to form an immiscible liquid mixture at a high carbon monoxide pressure. The dissociating solvent, e.g. ethylene glycol, is of moderate coordinating ability, while sufficiently polar to solvate the transition metal as a complex cation along with a transition metal, carbonyl anion in solution at a decreased carbon monoxide pressure. The carbon monoxide pressure is reduced and the liquids are separated to recover the hydrogenated coal liquid as product. The dissociating solvent with the catalyst in ionized form is recycled to the hydrogenation step at the elevated carbon monoxide pressure for reforming the catalyst complex within fresh coal liquid.

321467

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