First evaluation of the hydrogenation of primary bitumens

Technical Report · Tue Oct 27 04:00:00 EDT 1942

OSTI ID:7220563

Hupfer,; Leonhardt,

This report evaluated and compared primary bitumens to coal tar pitch in the hydrogenation process. Bituminous coal extract from extractive hydrogenation hydrogenated better than a coal tar pitch with similar content of high-molecular-weight fractions. Direct hydrogenation to produce gasoline and middle oil over an iron catalyst was more advantageous than the two-step method. In this experiment, primary bitumens from extractive hydrogenation of Silesian bituminous coal were converted either to gasoline and middle oil or to heavy-oil excess with this iron catalyst. The results were compared with those from high-asphalt-containing coal tar residue. The bitumens gave better results than the pitch for producing heavy oil. Larger amounts of gas were then required to produce sufficient splitting effect in the separators. Experimentation was not complete for high temperatures. No favorable results were obtained from the pitch for gasoline and middle oil. For hydrogenation of coal itself to gasoline and middle oil, the direct method seemed to have the advantges of lower losses to gas and better yields, as opposed to the two-step process. But for the production of heavy-oil excess, it seemed that the two-step method might have advantages, especially in terms of losses to gas, if a sufficient yield could be obtained in the second step. 3 tables.

• Research Organization: I.G. Farbenindustrie, A.G., Ludwigshafen (Germany)
• OSTI ID: 7220563
• Report Number(s): TOM-253-521-523
• Country of Publication: United States
• Language: German

Related Subjects

01 COAL, LIGNITE, AND PEAT
010403* -- Coal & Coal Products-- Hydrogenation-- (-1987)
010600 -- Coal
Lignite
& Peat-- Properties & Composition
BITUMENS
CATALYSTS
CATALYTIC EFFECTS
CHEMICAL REACTIONS
COAL EXTRACTS
COAL LIQUEFACTION
COAL TAR
COAL TAR OILS
ELEMENTS
HIGH PRESSURE
HYDROGENATION
IRON
LIQUEFACTION
METALS
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PITCHES
TAR
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENTS