970. ------. [HEMMINGER, C. E.] (Standard Oil Development Co.). Contacting Solid Particles and Gaseous Fluids. United States Patent 2,444,990, July 13. 1948; appl. filed Sept. 12, 1941, Serial No. 410,525; 8 claims (Cl.a 196-52).

Patent Abstracts

970. ------. [HEMMINGER, C. E.] (Standard Oil Development Co.). Contacting Solid Particles and Gaseous Fluids. United States Patent 2,444,990, July 13. 1948; appl. filed Sept. 12, 1941, Serial No. 410,525; 8 claims (Cl.a 196-52).

Vapors or gases are passed through a reaction zone countercurrent to the flow of finely divided contacting materials. The counterflow heat exchange may be used for either heating or cooling. The process may be used in synthesis of hydrocarbons from CO and H₂, as well as in catalytic cracking. 16 United States patents and 2 foreign patents cited.