Coal gasification

Details Coal gasification Coal gasification

C - Chemistry, Metallurgy

10

J

48/28

C10J 3/54 (2006.01) C10J 3/12 (2006.01) C10J 3/66 (2006.01)

Patent

CA 1077271

ABSTRACT Coal gasification process in which coal is pyrolyzed at a temperature below 700°C to form aqueous vapors and a char, the char is reacted with steam in a gasi- fication zone to produce carbon monoxide and hydrogen, and the vapors are condensed to produce an oil and waste water containing ammonia and phenolic compounds. This waste water is vaporized and substantially all the resulting steam containing ammonia and phenolic compounds is fed to the gasification zone.

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