3024.     SANDS, A. E., WAINWRIGHT, H. W., AND SCHMIDT, L. D.  Purification of Synthesis Gas produced From Pulverized Coal.  Ind. Eng. Chem., vol. 40, 1948, pp. 607-620; Chem. Abs., vol. 42, 1948, p. 4330.

        Production of synthesis gas directly from coal, instead of using coke as generator fuel, presents new and greater difficulties in connection with purification of the gas to render it suitable for synthesis purposes.  With special reference to gas made directly from pulverized coal, this paper outlines the purification specifications for Fischer-Tropsch synthesis gas, some of the established purification processes that may be used to meet these specifications, and the analytical methods that may be used to deal with the extremely low concentrations of impurities that may be tolerated in the purified gas.  Bibliography of 92 refs.