Prehydrogenation in leuna with catalyst 7846

Technical Report · Wed Nov 25 04:00:00 EDT 1942

OSTI ID:7297196

Peters, K

This report discussed the recent experiences in Leuna with two different catalysts as partial replacements for 5058. The two catalysts were 7846 Mo (containing molybdenum) and 7846 W (containing tungsten); the latter catalyst was renumbered 8376. In the last three of each four-oven chamber, 5058 had been replaced by one of the other catalysts. Between the remaining 5058 oven and the 7846 Mo ovens a reheater was installed, but this was not done between the 5058 oven and the 7846 W ovens because the latter catalyst operated at a much lower temperature. 7846 W operated at 19.5 to 20.5 millivolts temperature, whereas 7846 Mo operated at 22.5 millivolts; a throughput of 0.8 kg/1/hr was used for each. Both catalysts gave well-refined products with little phenols (0.02%) and bases (5 mg/1 NH/sub 3/ equivalent), but the 7846 product had aniline point 46 to 48, whereas the 7846 W product had aniline point 50 to 53. This meant that 7846 Mo product could not be processed further very well by catalyst 6434, whereas 7846 W product could be processed well; however, 7846 Mo product was a good diesel fuel. Finally there was a mention that Leuna had been able to increase the hydrogen pressure in the vapor phase by about 30 atm., partly by raising the total pressure and partly by introducing more newly produced hydrogen in the vapor phase. This rise in pressure, together with the quality of the product from 7846 W, had led to average increase of 10% in the yields from the 6434 chambers.

• Research Organization: I.G. Farbenindustrie, Ludwigshafen (Germany)
• OSTI ID: 7297196
• Report Number(s): TOM-254-012
• Country of Publication: United States
• Language: German

Related Subjects

01 COAL, LIGNITE, AND PEAT
010403* -- Coal & Coal Products-- Hydrogenation-- (-1987)
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
AROMATICS
CARBONACEOUS MATERIALS
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTIONS
CHEMICAL REACTORS
COAL
COAL LIQUEFACTION PLANTS
COMPARATIVE EVALUATIONS
CRYOGENIC FLUIDS
ELEMENTS
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUELS
GERMANY
HIGH PRESSURE
HIGH TEMPERATURE
HYDROGEN
HYDROGENATION
HYDROXY COMPOUNDS
INDUSTRIAL PLANTS
NONMETALS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHENOLS