3708. SULLIVAN, F. W. (Hydrocarbon Research, Ind.). Method for the Synthesis of Hydrocarbons in the Presence of a solid Adsorbent. United States Patent 2,583,611, Jan. 29, 1952; appl. filed July 13, 1946, Serial No. 683,324;6 claims (Cl. 260-449.6).

The normally liquid reaction products, obtained from the hydrogenation of CO by contact of the synthesis gas with the relatively coarse, solid, particulate, fluidized catalyst suspended therein, are removed from the reaction zone by being adsorbed by relatively fine adsorbent particles also suspended in the gaseous medium. A suitable adsorptive agent is activated charcoal. When operating the process for the production of gasoline, the reactor contains as catalyst an Fe powder promoted with about 1-2% K₂O and 2-3% Al₂O₃, the particle size being about 60- to 200-mesh. The activated charcoal is of such particle size that all of the material passes through a 200-mesh screen. The synthesis gas comprising CO:H₂=1:2 and with about 14% CO₂ is passed into the reactor at about 550° F. and 200 p. s. i. g. Before entering the reaction zone, the synthesis gas entrains about 0.1 lb. of powdered activated coconut charcoal per standard cu. ft. of feed gas. When operating in this manner, a substantial proportion of the reaction products is taken up by the adsorbent particles in the immediate vicinity, of their formation within the reactor, with drawn there from by these particles, and liberated in the reactivation chamber.