Enthalpy measurement of coal-derived liquids. Technical progress report, August-October 1982
The correlational effort on the coal syncrudes and model compounds has been proceeding along two fronts. The first involves experimental work on a correlating factor for association in the liquids and the second involves an investigation of the modeling capabilities of cubic equations of state. The first area of investigation is the experimental measurement of a correlating factor for assocition in coal liquids. The procedure involves molecular weight measurement by freezing point depression. To facilitate these measurements, a simple Beckman freezing point depression apparatus is being currently modified to increase the accuracy, speed, and ease of measurement. The second area of effort has involved establishing a set of cubic equations of state which can adequately model the enthalpy departures of quinoline and m-cresol. To this effort, a number of standard and association specific equations of state have been tested against a data base of previously measured enthalpy departures of m-cresol and quinoline. It has been found that these equations do quantitatively a poor job on m-cresol and quinoline. These problems are probably due to the highly polar nature of m-cresol and to a lesser extent quinoline, and to the poor quality of critical parameters for quinoline.
- Research Organization:
- Colorado School of Mines, Golden (USA). Dept. of Chemical and Petroleum Refining Engineering
- DOE Contract Number:
- AC22-81PC40787
- OSTI ID:
- 6641786
- Report Number(s):
- DOE/PC/40787-6; ON: DE83003295
- Country of Publication:
- United States
- Language:
- English
Similar Records
Enthalpy measurement of coal-derived liquids. Final report, April 1981-September 1983. [517 to 10342 kPa; 340 to 664 K]
Enthalpy measurement of coal-derived liquids. Technical progress report, February 1983-April 1983
Related Subjects
010405 -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
010600* -- Coal
Lignite
& Peat-- Properties & Composition
AROMATICS
AZINES
COAL LIQUIDS
CORRELATIONS
CRESOLS
ENTHALPY
EQUATIONS
EQUATIONS OF STATE
FLUIDS
HETEROCYCLIC COMPOUNDS
HYDROXY COMPOUNDS
LIQUIDS
MOLECULAR WEIGHT
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PHENOLS
PHYSICAL PROPERTIES
PYRIDINES
QUINOLINES
STRUCTURAL MODELS
THERMODYNAMIC PROPERTIES