Fundamental reaction pathways during coprocessing
Coal petroleum resid coprocessing is fast becoming a cost effective means of coal liquefaction. The reaction mechanisms, however, are not well understood and are very important to the development and improvement of the technology. We have been carrying out an investigation that is studying the role of dihydrogen in the coprocessing reaction. Initial research on this project focused on coprocessing reactions that were carried out with Illinois No. 6 coal or Wyodak coal and Lloydminster resid or Hondo resid under severe conditions. Quantitative {sup 1}H and {sup 2}H NMR analyses yielded similar results for the four combinations of coals and resids in that the degree of deuteration, (D/H+D), of the coprocessed products approached 0.27. The value that was expected for complete equilibration of the isotopes among the available positions in the oil, resin, and asphaltene. These results established the ultimate unselective character of the chemical reactions in the severe coprocessing reaction.
- Research Organization:
- Chicago Univ., IL (United States). Dept. of Chemistry
- Sponsoring Organization:
- DOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC22-88PC88811
- OSTI ID:
- 5221579
- Report Number(s):
- DOE/PC/88811-T14; ON: DE92015411
- Country of Publication:
- United States
- Language:
- English
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Lignite
& Peat-- Hydrogenation & Liquefaction
ASPHALTENES
ASPHALTS
BITUMENS
BITUMINOUS COAL
BLACK COAL
CARBONACEOUS MATERIALS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COAL
COAL LIQUEFACTION
COPROCESSING
DEUTERATION
DOCUMENT TYPES
ENERGY SOURCES
FOSSIL FUELS
FUELS
HYDROGENATION
KINETICS
LIQUEFACTION
MAGNETIC RESONANCE
MATERIALS
NUCLEAR MAGNETIC RESONANCE
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PETROLEUM
PETROLEUM FRACTIONS
PETROLEUM RESIDUES
PROCESSING
PROGRESS REPORT
REACTION KINETICS
RESONANCE
SUBBITUMINOUS COAL
TAR
THERMOCHEMICAL PROCESSES