C - Chemistry – Metallurgy – 10 – G
Patent
C - Chemistry, Metallurgy
10
G
48/35, 48/46, 48
C10G 3/00 (2006.01) C10J 3/20 (2006.01) C10J 3/46 (2006.01) C10J 3/54 (2006.01) C10J 3/64 (2006.01) C10K 1/00 (2006.01)
Patent
CA 1133256
ABSTRACT OF THE DISCLOSURE A process for gasifying coal and other carbon- aceous matter is disclosed which produces fuel gas con- taining low concentrations of polycyclic aromatic hydro- carbons. In this process the polycyclic aromatic hydro- carbons released by the coal during devolatilization and formed during pyrolysis of volatile matter are decomposed thermally in the presence of hydrogen, at a sufficiently high partial pressure (obtained by increasing the total pressure in the gasifier) to prevent polymerization of free radicals formed during pyrolysis. A relationship between the temperature, the gas residence tine in the gasification reactor, the hydrogen partial pressure (i.e., total pressure in the gasifier), and the coal feed condi- tions are specified to achieve "clean" coal gasification
374788
Mcconnell And Fox
Westinghouse Electric Corporation
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