Enthalpy studies. Final report
This report describes the evaluation and enhancement of the enthalpy model developed for the SRC-I process (as well as the other coal-liquefaction processes). A preliminary version of the model was used in the Post-Baseline review of the SRC-I process design (Duffy et al., 1983), and the final version will be employed by APCI in the ASPEN PLUS Model of the SRC-I Demonstration Plant (APCI, 1984). ICRC, recognizing the need for thermophysical data on coal liquids and coal-fluid model compounds, embarked upon a 2-year experimental program. Specifically, the overall program objectives were to obtain vapor/liquid equilibrium (VLE) and enthalpy data to develop correlations and verify the designs of several important pieces of process equipment in the SRC-I demonstration plant. The enthalpy model uses a modification of the Peng-Robinson (1976) equation of state proposed by Mathias ad Copeman (1983). It was developed mainly from publicly available data on coal fluids and related model compounds (Mathias and Monks, 1982). The generalized (predictive) model has provided good agreement with experimental data on coal fluids. Surprisingly, the agreement with the data on model-compound mixtures is not as good. The practical conclusion is that, within the frame work of the present model, it is better to lump various types of components within the same pseudocomponent. The enthalpy model has achieved the main objective of an improved model for the design of several key heat exchangers in the SRC-I process. Further, the work has identified deficiencies in existing models, which suggest the focus of future research. 24 references.
- Research Organization:
- Air Products and Chemicals, Inc., Allentown, PA (USA); Lehigh Univ., Bethlehem, PA (USA); International Coal Refining Co., Allentown, PA (USA)
- DOE Contract Number:
- AC05-78OR03054
- OSTI ID:
- 6944906
- Report Number(s):
- DOE/OR/03054-110; ON: DE84015866
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
ALKANES
BOILING POINTS
CALCULATION METHODS
COAL LIQUEFACTION
COAL LIQUIDS
CORRELATIONS
CRITICAL PRESSURE
CRITICAL TEMPERATURE
CYCLOALKANES
DATA
DECALIN
DEMONSTRATION PLANTS
DENSITY
DISPERSIONS
ENTHALPY
EQUATIONS
EQUATIONS OF STATE
EQUILIBRIUM
EXPERIMENTAL DATA
FLUIDS
GASES
HYDROCARBONS
INFORMATION
LIQUEFACTION
LIQUIDS
MIXTURES
NUMERICAL DATA
ORGANIC COMPOUNDS
PHYSICAL PROPERTIES
SPECIFIC HEAT
SRC PROCESS
STRUCTURAL MODELS
TEMPERATURE DEPENDENCE
THERMOCHEMICAL PROCESSES
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE
VAPOR PRESSURE
VAPORS