Catalytic hydropyrolysis of carbonaceous material with char recy

Details Catalytic hydropyrolysis of carbonaceous material with char recy Catalytic hydropyrolysis of carbonaceous material with char recy

1991-01-15

1992-03-17

Pal, Asok

Mineral oils: processes and products

By treatment of solid mineral, e.g., coal liquefaction, etc.

Plural hydrogenation steps

208417, 208421, 208422, 208423, C10G 106, C10G 108

Patent

active

050965697

ABSTRACT:
Disclosed is a method for catalytically hydropyrolyzing carbonaceous material to produce liquid products boiling under about 550.degree. C. with reduced amounts of methane being formed. The process comprises (a) treating the carbonaceous material with as hydrogenation catalyst; (b) contacting the so-treated carbonaceous material with an effective amount of hydrogen, at an effective residence time, at a temperature below the critical temperature of rapid methane formation; (c) recovering the resulting liquids, gases, and char; and (d) recycling the char.

REFERENCES:
patent: 4166786 (1979-09-01), Duraiswamy et al.
patent: 4172814 (1979-10-01), Moll et al.
patent: 4519895 (1985-05-01), Deschamps et al.
patent: 4544478 (1985-10-01), Kelley
patent: 4648965 (1987-03-01), McMath et al.

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