1760. ---------------. [KING, J. G.] Complete Gasification of Coal and Methane Synthesis. Inst. Gas Eng., Pub., 197/80, 29 pp.; Gas Jour., vol. 224, 1938, pp. 457-460, 637; Gas World, vol. 109, 1938, pp. 372, 410-411; Chem. Abs., vol. 33, 1939, p. 6562.

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Literature Abstracts

Sized semianthracite coals of low caking power can be gasified successfully in a water-gas plant to yield 67,000 cu. ft. or 205 therms of gas per ton of coal. Rate of output of gas is similar to that obtained from sized coke. High-volatile coals of low or medium caking power can be gasified by using a recuperator and introducing a backrun into a cycle. The yield of gas is about 45,000 cu. ft. or 141 therms per ton of coal. Rate of output of the generator is 15-25% less than when sized coke is used in the same plant. A small proportion of the tar (about 2.5 gal. per ton of coal) escapes cracking and means must be provided for its recovery. By modifying cycles of operation, coal can be gasified to give a gas having a high ratio of H₂:C. Such a gas would be of value in connection with processes for catalytic synthesis of hydrocarbons. Mo catalysts were not entirely satisfactory for synthesis of CH₄ from coal gas. Activity of a ThO₂-promoted Co catalyst was unaffected by S, but decreased with time. The Fuel Research Station vortex burner was modified to gasify pulverized coal with steam and O₂ at atmospheric pressure.