1545. ------. [I. G. FARBENINDUSTRIE, A. G.] [Regenerating Catalysts.] German Patent Appl. I 71,558. OZ 13,255. filed Feb. 11, 1942 (CL. IV b-12 g). TOM Reel 20, item 162. frames 2,588-2,594.

PATENTS

1545. ------. [I. G. FARBENINDUSTRIE, A. G.] [Regenerating Catalysts.] German Patent Appl. I 71,558. OZ 13,255. filed Feb. 11, 1942 (CL. IV b-12 g). TOM Reel 20, item 162. frames 2,588-2,594.

Describes process and an apparatus for removing the C deposits from catalysts in shaft furnaces, wherein the shaft furnace is divided into several successive zones, each proceeded with the essential O₂-containing gases. The regeneration takes place by steps.