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      1112.  HUJSAK, K. L., Kratzer, M. B., AND MUNGEN, R.  From Hydrogen and Carbon Monoxide With Fluidized Catalyst.  United States Patent 2,620,262.  Dec. 2, 1952; appl. Filed Aug. 26, 1949.  Serial No. 112,554: 1 claim (Cl. 22-228).

Incoming synthesis gas is subjected first to reducing conditions and finally to oxidizing conditions within a single reaction zone.  The reactor system is designed to prevent longitudinal mixing of the fluidized solids from the top to the bottom of the reactor.  Geometrically spaced heat exchanged tubes extend between a fixed coolant liquid header, that is at substantially the level of the distributor grid, and upper headers that are free to move up and down to take care of thermal expansion and contraction.  Coacting verticals fins are secured to the walls of the heat exchange tubes.  The system maintains a multiplicity of segregated flow channels in which the catalyst is retained.  10 United States patents cited.

HULTGREN, H. B. See abs. 3829, 3830, 3831.

            HULTGREN, N. F. See abs. 3827, 3828, 3829, 3830, 3831.