3888.  WEINGAERTNER, E., AND SEEMANN, W. (Ruhrchemie A. G.) [Regeneration of Used Adsorption Agents.] German Patent 749,793, December 9, 1944; appl. filed Dec. 30, 1938. TOM Reel 42, bag 3,439, item 58, frame 1,049.

Adsorption agents, which have been used for separating the light hydrocarbons from the residual gases of the Fischer-Tropsch synthesis, are treated with steam at about 300°-500° and then cooled suddenly by trickling cold H₂O over them. The process is applied to regeneration of active C.