Enthalpy measurement of coal-derived liquids. Quarterly technical progress report, October-December 1980. [2,6-dimethylpyridine; 105 to 705/sup 0/F; 50 to 1500 psia]
Equipment modifications to the Freon flow system of a reference fluid boil-off calorimeter are described. These modifications, along with a new equipment start-up procedure, have resulted in enhanced system stability, and consequently, better accuracy in the measurements. A thorough check of equipment calibration and operation was conducted to assure the validity of the experimental data. Using the flow calorimeter, enthalpy measurements were made for 2,6-dimethylpyridine. The data were taken over a temperature range of 105 to 745/sup 0/F along 50, 100, 200, 400, 576, 750, 1000, and 1500 psia isobars. Thermodynamic properties derived from the data were successfully compared to corresponding literature values. The measured quantities were also compared to those calculated from correlations using the SRK equation of state and a modification of the BWR equation of state by Kesler and Lee, and there is good agreement. However, comparisons between measured and calculated quantities are limited by the lack of ideal gas heat capacity data.
- Research Organization:
- Colorado School of Mines, Golden (USA). Dept. of Chemical and Petroleum Refining Engineering
- DOE Contract Number:
- AC22-79ET13395
- OSTI ID:
- 6892930
- Report Number(s):
- DOE/ET/13395-7
- Country of Publication:
- United States
- Language:
- English
Similar Records
Enthalpy measurement of coal-derived liquids. Technical progress report, August-January 1982. [Isobars of 517. 1, 689. 5, 1034. 2, 1379. 1, and 10342. 5 kPa temperature range of 340 to 664/sup 0/K]
Enthalpy measurement of coal-derived liquids. Final report, April 1981-September 1983. [517 to 10342 kPa; 340 to 664 K]
Related Subjects
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
010600 -- Coal
Lignite
& Peat-- Properties & Composition
AZINES
BOILING POINTS
CALIBRATION
CALORIMETERS
COAL LIQUEFACTION
COAL LIQUIDS
CORRELATIONS
DATA
ENTHALPY
EQUATIONS
EQUATIONS OF STATE
EXPERIMENTAL DATA
FLUIDS
HETEROCYCLIC COMPOUNDS
INFORMATION
LIQUEFACTION
LIQUIDS
MEASURING INSTRUMENTS
MEASURING METHODS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PHYSICAL PROPERTIES
PYRIDINES
SPECIFIC HEAT
THERMOCHEMICAL PROCESSES
THERMODYNAMIC PROPERTIES
TRANSITION HEAT
TRANSITION TEMPERATURE
VAPOR PRESSURE
VAPORIZATION HEAT