Process for the superatmospheric gasification of solid carbonace

Details Process for the superatmospheric gasification of solid carbonace Process for the superatmospheric gasification of solid carbonace

1980-08-21

1982-03-30

Bashore, S. Leon

Gas: heating and illuminating

Processes

Fuel mixtures

44 51, 48DIG2, 55 68, 55 73, 252309, 406197, 423416, C10J 300

Patent

active

043222218

ABSTRACT:
A process is disclosed for gasifying solid carbonaceous material at elevated temperature and pressure to produce a gas consisting of carbon monoxide and hydrogen, which comprises forming a slurry at atmospheric pressure of the carbonaceous material with a liquid having a specific gravity of from 1.1 to 1.9, a boiling temperature of at least 70.degree. F., a latent heat of vaporization less than about 200 BTU per pound, a critical temperature which is less than the incipient coking temperature of the carbonaceous material, a stability at temperatures up to 600.degree. F., an essentially inert chemical reaction with the carbonaceous material at temperatures less than about 600.degree. F., an immiscibility with water or solubility in water at no more than 5%, and a dissolving ability for hydrogen sulfide at temperatures of from -40 to 250.degree. F., and raising the formed slurry to a pressure of at least the gasification pressure and vaporizing said liquid and gasifying said carbonaceous material, either in the same or in separate steps. Examples of suitable slurrying liquids are: carbon tetrachloride, carbon disulfide, trichloroethylene, bromoethane, chlorobenzene, methane dichloride, chloroform, or mixtures thereof.

REFERENCES:
patent: 2016804 (1935-10-01), Nichols
patent: 2560478 (1951-07-01), Roetheli
patent: 2735787 (1956-02-01), Eastman et al.
patent: 3140123 (1964-07-01), Bowen
patent: 3762133 (1973-10-01), Merriman et al.
patent: 3929429 (1975-12-01), Crouch
patent: 4020144 (1977-04-01), Bosniack
patent: 4060397 (1977-11-01), Buiter et al.
patent: 4115081 (1978-08-01), Ohno et al.
patent: 4153427 (1979-05-01), Bissett et al.
patent: 4156594 (1979-05-01), Tarpley, Jr.
G. G. Hawley, "The Condensed Chemical Dictionary" 8th Edition, 1974 pp. 169-170.

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