PATENTS

       159.     BECK, R. A., AND SENSEL, E. E.  (The Texas Co.).  Carrying Out Catalytic Reactions.  United States Patent 2,492,349, Dec. 27, 1949: appl. filed Nov. 26, 1946, Serial No. 712,410; 6 claims (Cl. 260-449.6.). Chem. Abs., vol. 44, 1950. p. 2293.

Reaction zone has a series of scoop-or funnel-shaped baffles spaced vertically apart in the line of flow of the fluid reactants.  The funnel shape tends to jet the flow as a relatively restricted stream at a relatively high rate of speed with substantial entrainment of the catalyst particles.  The upper surface of each baffle is convex.  About the lateral margins of the baffle where the upward rate of flow is less, the entrained catalyst is free to gravitate downward into the space below the baffle from which it was jetted.  2 foreign patents cited.