High Temperature High Pressure Thermodynamic Measurements for Coal Model Compounds
The overall objective of this project is to develop a better thermodynamic model for predicting properties of high-boiling coal derived liquids, especially the phase equilibria of different fractions at elevated temperatures and pressures. The development of such a model requires data on vapor-liquid equilibria (VLE), enthalpy, and heat capacity which would be experimentally determined for binary systems of coal model compounds and compiled into a database. The data will be used to refine existing models such as UNIQUAC and UNIFAC. The flow VLE apparatus designed and built for a previous project was upgraded and recalibrated for data measurements for thk project. The modifications include better and more accurate sampling technique and addition of a digital recorder to monitor temperature, pressure and liquid level inside the VLE cell. VLE data measurements for system benzene-ethylbenzene have been completed. The vapor and liquid samples were analysed using the Perkin-Elmer Autosystem gas chromatography.
- Research Organization:
- Federal Energy Technology Center, Morgantown, WV, and Pittsburgh, PA (United States)
- Sponsoring Organization:
- USDOE Office of Fossil Energy (FE)
- DOE Contract Number:
- FG22-95PC95214
- OSTI ID:
- 1686
- Report Number(s):
- DE-FG22-95PC95214-03; ON: DE00001686
- Country of Publication:
- United States
- Language:
- English
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HIGH TEMPERATURE HIGH PRESSURE THERMODYNAMIC MEASUREMENTS FOR COAL MODEL COMPOUNDS
Thermodynamic model for calorimetric and phase coexistence properties of coal derived fluids