Enthalpy measurement of coal-derived liquids. Technical progress report, February 1983-April 1983
This quarter's work has concentrated on two primary areas. The first was the completion of experimental measurements of the associated factor. The second area was a look at current equation of state application. The work has progressed smoothly so far and should in future emphasize the computational work. The significant systems looked at this quarter were the C/sub 2/-C/sub 6/ alcohols, cresol, quinoline, and cresol-quinoline mixtures. The alcohols and cresols are important because the hydroxyl hydrogen bonding which is believed to be the primary association mechanism in coal liquids. Quinoline is significant because it is an excellent model for nitrogen containing constituents of coal liquids. The cresol-quinoline system, which was measured for range of system compositions, was studied because enthalpy data for a similar range of compositions was available. The results for most of these systems were reasonable and make important additions to previous data. The results for the quinoline-cresol mixture systems were curious and very different from anything previous to these measurements. The causes of these results are currently not well understood. Clearly they are due to complex interaction phenomena occurring in these systems. Since this behavior is not generally seen in complex mixtures, it is felt that the behavior is due to the fact that the cresol-quinoline system is a simple binary system which allows complex composition dependent solute-solute-solvent interactions to occur. This effect would also probably occur in ternary, quartenary, and maybe even higher systems. This behavior would tend to washout in coal liquids which have hundreds of components. As a result, it is felt that pure component systems are more valid models for coal liquid associations and that binary, etc., systems are too great a complexity to be currently understood.
- Research Organization:
- Colorado School of Mines, Golden (USA). Dept. of Chemical and Petroleum Refining Engineering
- DOE Contract Number:
- AC22-81PC40787
- OSTI ID:
- 6396714
- Report Number(s):
- DOE/PC/40787-8; ON: DE83012971
- Country of Publication:
- United States
- Language:
- English
Similar Records
Enthalpy and phase behavior of coal derived liquid mixtures. Technical progress report, April-June 1985
Enthalpy measurement of coal-derived liquids. Technical progress report, August-October 1982
Related Subjects
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
010600 -- Coal
Lignite
& Peat-- Properties & Composition
AROMATICS
AZINES
COAL LIQUIDS
CORRELATIONS
CRESOLS
DISPERSIONS
ENTHALPY
EQUATIONS
EQUATIONS OF STATE
FLUIDS
HETEROCYCLIC COMPOUNDS
HYDROXY COMPOUNDS
LIQUIDS
MEASURING METHODS
MIXTURES
MOLECULAR WEIGHT
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PHENOLS
PHYSICAL PROPERTIES
PYRIDINES
QUINOLINES
THERMODYNAMIC PROPERTIES