Patent application for a process for hydrogenation of pitch from low-temperature carbonization of bituminous coal. [Effects of catalyst on product proportions]

Technical Report · Wed Sep 13 04:00:00 EDT 1944

OSTI ID:7307679

Ibing, G

The beginning material for the process was pitch dissolved in middle oils or heavy oils from previous runs, and a solid catalyst was used. The starting material was filtered to remove any ash present, then was heated to some temperature less than 300/sup 0/C in a preheater and then mixed in the reaction oven with hydrogen gas, which had been heated to a very high temperature in its own preheater, so that the temperature in the reaction oven became about 460/sup 0/C, with a hydrogen partial pressure of up to 700 atm. The pitch contained 30 to 40 percent asphalt, which might have precipitated out and choked the system, but it was prevented from doing that by the rather low temperature in the preheater and the fact that the catalyst converted all the asphalt to lower-molecular-weight materials. The catalyst used depended on the ultimate products desired. For products low in hydrogen and rich in aromatics, a small amount of hydrogenating metals (molybdenum, chromium, etc.) or metal compounds carried on a substance such as siliceous earth, silica gel, alumina, or activated charcoal, which had strong splitting effects, was used, whereas to obtain hydrogen-rich products, more of the metal, or even nothing but the metal, was used. From a typical run of the process, one could expect to obtain 10 percent gaseous products, 5 percent water, 10 percent gasoline, 20 percent middle oils, and 55 percent heavy oils.

• Research Organization: Ruhroel, G.m.b.H., Bottrop (Germany)
• OSTI ID: 7307679
• Report Number(s): TOM-8-52-55
• 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
ASPHALTS
BITUMENS
BITUMINOUS COAL
BLACK COAL
CARBONACEOUS MATERIALS
CARBONIZATION
CATALYSTS
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
CHROMIUM
COAL
COAL LIQUEFACTION
COAL TAR OILS
DEASHING
DECOMPOSITION
ELEMENTS
ENERGY SOURCES
FOSSIL FUELS
FUELS
GASOLINE
HEATERS
HIGH PRESSURE
HIGH TEMPERATURE
HYDROGENATION
LIQUEFACTION
METALS
MOLYBDENUM
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PETROLEUM PRODUCTS
PITCHES
REFRACTORY METALS
TAR
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENTS
YIELDS