Manufacture of road paving asphalt using coal tar
Coal tar is a ready source of asphaltenes needed in asphalt production. Coal tar pitch itself, however, is unsuitable for making road-paving asphalt, since the resulting material has low ductility, high temperature sensitivity, and low resistance to wear. For this reason, in England, where replacing imported petroleum with local products was important 10 to 20 years ago, it was required that no more than 10 to 20 percent coal tar pitch be incorporated in road pavement. At higher concentrations, the pitch separates from the petroleum-derived asphalt, causing brittleness and cracking. To make a good asphalt from coal tar pitch, chemical modification or blending with additives appears necessary. In this study, the potentials are for producing road-paving asphalt from coal tar and available inexpensive petroleum fractions are explored. The objective of the study is to develop new uses of coal tar for asphalt production and to free the petroleum residue for upgrading to gasoline and diesel fuels.
- Research Organization:
- Mobil Research and Development Corp., Central Research Lab., P.O. Box 1025, Princeton, NJ 08540
- OSTI ID:
- 7011030
- Report Number(s):
- CONF-860911-
- Journal Information:
- Am. Chem. Soc., Div. Pet. Chem., Gen. Pap., Prepr.; (United States), Vol. 31:3; Conference: 192. American Chemical Society national meeting, Anaheim, CA, USA, 7 Sep 1986
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
02 PETROLEUM
04 OIL SHALES AND TAR SANDS
ASPHALTS
PRODUCTION
COAL TAR
PROCESSING
PETROLEUM FRACTIONS
ROADS
BUILDING MATERIALS
ASPHALTENES
CATALYTIC CRACKING
CHEMICAL COMPOSITION
DEHYDROGENATION
HYDROCRACKING
PETROLEUM
PETROLEUM RESIDUES
PITCHES
POLYMERIZATION
REDUCTION
ROAD OILS
BITUMENS
CHEMICAL REACTIONS
CRACKING
DECOMPOSITION
ENERGY SOURCES
FOSSIL FUELS
FUELS
MATERIALS
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PYROLYSIS
TAR
THERMOCHEMICAL PROCESSES
010402* - Coal
Lignite
& Peat- Purification & Upgrading
020400 - Petroleum- Processing
040600 - Oil Shales & Tar Sands- Products & By-Products