2117.     ---------------.  [LINZ, B. F.]  Bureau of Mines Modified Fischer-Tropsch Plant.  Oil Gas Jour., vol. 49, No. 17, 1950, p. 42-43.

        Bureau of Mines 80-100-bbl.-per-day plant for converting coal to oil by a modified Fischer-Tropsch process will be tested this fall with a view to beginning integrated operations next year.  The plant will consist of 5 units, respectively for O₂ production, coal gasification, gas purification, hydrocarbon synthesis, and distillation.  The gasification unit has been developed by Koppers Co.; it converts pulverized coal under pressure into synthesis gas by the aid of steam and O₂.  The gasifier uses about 28 tons of coal, 24 of O₂ and 35 of superheated steam to produce some 2,000,000 cu. ft. of raw synthesis gas daily.  The converter will be of the internally cooled type having a fluidized bed of granular, synthetic-NH₃ type catalyst suspended in a constantly flowing body of coolant oil.  The anticipated daily production of the gas-synthesis demonstration plant will include 55-60 bbl. of 75-octane-no. gasoline, 10-12 bbl. of 80 cetane diesel oil, and approximately 12 bbl. of heavy oils and waxes suitable for cracking stock.