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 1315.    ---------------.  [HALL, C. C.] Fischer-Tropsch Catalyst Ovens and General Information on the Fischer-Tropsch Process Obtained at Offices of Gutehoffnungshütte A.-G., Sterkrade, Ruhr.  CIOS Rept. XXVII-70, 1945, 5 pp.; PB 975; TOM Rept. 37; TOM Reel 197; TAC Rept. SnMC-10.

        3 firms controlled the manufacture of Fischer-Tropsch ovens; Mannesmanne Rohrwerke, Krupps, and Gutehoffnungshütte, the former being the largest manufacturer.  There were 3 types:  (1) The normal Lammellanofen for use at atmospheric pressure; (2) the double-tube oven for medium pressure, Co-catalyst synthesis; and (3) the double-tube oven designed for use at 20 atm. pressure for the Fe-catalyst synthesis and of the same size and catalyst capacity as (2).  Each oven contained 2,100 double tubes.  The construction is shown in sketch.