PATENT

3493. ----- [STANDARD OIL CO.]  Gas Manufacture.  British Patent 680,545, Oct. 8, 1952.  Chem. Abs., vol. 47, 1953, p. 4065.

Carbonaceous materials are converted to H₂ and CO in this continuous 2-stage process.  In the 1^st stage, pulverized coke is heated to 2,000° F. in a fluidized bed by partial combustion with preheated air.  The heated coke is transported through a reactor tube, where it is partly gasified with superheated steam, to a 2d fluidized bed where additional gasification reduces the temperature to about 1,700° F.  Excess solids are discarded, and the rest are recirculated to the 1^st reactor.