663. DANULAT, F. [Gasification of Solid Fuels by Oxygen Under Pressure.] Mitt. Metallges., No. 13, 1938, pp. 14-22; Ind. Eng. Chem., news ed., vol. 16, 1938, p. 535; Braunkohle, vol. 37, 1937, pp. 200-202; Chem. Abs., vol. 33, 1939, p. 1471.
Description of commercial manufacture of city gas in Germany by the gasification of brown coal in a plant having two generators of 3.9 ft. diameter, 47,300 lb. of coal is gasified per 24 hr., yielding 563,000 cu. ft. of gas (at 0° and 760 mm.). It is claimed that any non-coking solid fuel can be used for gasification. O2 is introduced at approximately 300 p.s.i.; this pressure is maintained during gasification of coal. Before entering the generator, the O2 is mixed with superheated steam at 500°. After purification and CO2 reduction, the gas has the following composition: CO2, 3.0; illuminants, 0.5; O2, 0.1; CO, 22.8; H2, 48.7; CH4, 22.6; N2, etc., 2.3%. For certain synthetic purposes, it is possible to limit the CO production to 15% and increase H2 to as much as 75% by suitable control of steam input, temperature, and pressure and by use of proper fuels.