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- W97403725 abstract "Many coal conversion plant designs use physical property correlations that characterize a coal liquid by the cumulative weight boiling curve and specific gravities and molecular weights associated with that curve. Results of simulated material balances produced by using selected thermodynamic physical property correlations and ASPEN simulator are compared to pilot plant data. To conduct this study, a preprocessing program, COALIQ, was developed which produces an ASPEN input file given the characterization data for the coal liquid and the selected correlations. Under moderate pressures and temperatures, reasonable K-values are obtained for systems containing only hydrogen, methane, and coal liquid; however; overall deviations are more pronounced near critical conditions. Because of the scatter of data for the cases examined, deviations caused by the use of different thermodynamic physical property correlations were not noticeable. Although the overall predicted mass balance for the P-99 pilot plant flash unit was close to the data, large deviations were noticed in individual component balances, particularly for water and the heavy coal liquid cuts. While the quality of pilot plant data may be questioned, equations of state that can accurately handle water-hydrocarbon mixtures and equations of state which behave robustly near the critical region should be included inmore » ASPEN. 8 references, 2 figures, 5 tables.« less" @default.
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- W97403725 date "1983-01-01" @default.
- W97403725 modified "2023-09-27" @default.
- W97403725 title "Analysis of coal liquids physical properties" @default.
- W97403725 hasPublicationYear "1983" @default.
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