| 摘要 |
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 DEG 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 DEG F., an essentially inert chemical reaction with the carbonaceous material at temperatures less than about 600 DEG 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 DEG 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.
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