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Return to Abstracts of Patents Return to Abstracts of Patents 1000-1249 Patent Abstracts1061. ------ [HIRSCH, J. H.] (Gulf Research & Development Co.). Method and Apparatus for Conducting Chemical Reactions. United States Patent 2,488,406, Nov. 15, 1949; appl. filed Nov. 25, 1947, Serial No. 787,884; 4 claims (Cl. 260-449.6). In the exothermic reactions such as synthesis of hydrocarbons from CO and H2, the temperature is controlled by continuously removing a portion of the dense fluidized catalyst downward from the catalyst bed into a mixing zone, where it is diluted and made less dense by addition of more reactant gases. The less dense stream is then passed upward through a cooling zone back into the reactor, where the dense catalyst bed is formed again. 13 United States patents cited. |