First evaluation of the hydrogenation procesures from primary bitumen

Technical Report ·

OSTI ID:6728174

Leonhardt, P; Hupfer, H

Through experimental investigation it was found that direct hydrogenation of bituminous coal with an iron catalyst yielded better overall results with respect to gasoline and middle oil than a two-stage process of extractive hydrogenation at 600 atm followed by hydrogenation of the extract. The two-stage process, however, could be carried out with better yield than the hydrogenation of bituminous coal tar pitch. A comparison of primary bitumen from the 600-atm extractive hydrogenation and bituminous coal tar residue of approximately equal asphalt and high-molecular constituents was made, distinguishing between compositions by the solubilities in benzene and a tetralin-cresol mixture. The primary bitumen had 1.2% insolubles in a tetralin-cresol mixture as compared to 14.0% for the coal tar residue. The benzene-insoluble portion minus the tetralin-cresol insolubles was 16.2% of the primary bitumen and 8.6% of the tar residue. Asphalt content were 24.9% for bitumen and 18.8% for the tar. These results indicated a greater heavy oil content produced from the primary bitumen than the tar residue. Lowering the temperature gave a better asphalt and solid decomposition. Gas production was low at 11%. It was also shown that the direct hydrogenation was more favorable as far as low gasification, higher yield, and oil production were concerned. The gasoline production was lower at 23.2% as compared with 27.0% for the two-stage process. It was thought that the two-stage process could be advantageous for the production of heavy oil, where there would be a very low loss to gasification. 1 table

• Research Organization: I.G. Farbenindustrie, A.G., Ludwigshafen (Germany)
• OSTI ID: 6728174
• Report Number(s): TOM-162-164-166
• Country of Publication: United States
• Language: German

Related Subjects

01 COAL, LIGNITE, AND PEAT
010403* -- Coal & Coal Products-- Hydrogenation-- (-1987)
010405 -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
AROMATICS
BENZENE
BITUMENS
BITUMINOUS COAL
BLACK COAL
CARBONACEOUS MATERIALS
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
COAL
COAL EXTRACTS
COAL LIQUEFACTION
COAL LIQUIDS
COAL TAR
COMPARATIVE EVALUATIONS
CRESOLS
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUELS
GASES
GASOLINE
HIGH PRESSURE
HYDROCARBONS
HYDROGENATION
HYDROXY COMPOUNDS
INFORMATION
LIQUEFACTION
NORMAL-MODE ANALYSIS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PETROLEUM PRODUCTS
PHENOLS
PITCHES
SOLUBILITY
SOLVENT PROPERTIES
TABLES
TAR
TETRALIN
THERMOCHEMICAL PROCESSES
YIELDS