PATENT

3775.  UNDERWOOD, A. J. V.  Production of Hydrocarbons.  British Patent 516,555, July 21, 1938.  Chem. Zentralb., 1941, I, p. 2894; British Chem. Abs., 1940, B, p. 189.

Coal, coke, or other carbonaceous material is gasified under pressure with steam, the products of gasification, chiefly CO and H₂, are passed through a H₂O cooled synthesis chamber, and low-pressure steam produced by heating of the cooling H₂O and/or contained in the products of the synthesis reactions is then converted by means of an injector thermocompressor into high-pressure steam, which is used for the gasification of further fuel.