Phase Behavior of Coal Fluids: Data for Correlation Development. Report for the Period: November 1, 1985-January 31, 1986

摘要

The overall objective of this study is to develop accurate predictive methods for representation of vapor-liquid equilibria in systems encountered in coal-conversion processes. The objectives of the present project include: (1) Measurements of binary vapor-liquid phase behavior data for selected solute gases (e.g., H sub 2 , CO, CO sub 2 , NH sub 3 , H sub 2 S) in a series of heavy, primarily aromatic, solvents (e.g., benzene, naphthalene, phenanthrene) to permit evaluation of interaction parameters in models for phase behavior. Both solubilities of the gases in the liquid phase and of the heavy solvents in the gas phase will be determined. (2) Measurements on ternary systems in which high-melting-point solvents (e.g., pyrene, chrysene, triphenylene) are dissolved in more volatile aromatics to provide mixed solvents; this will facilitate measurements at lower temperatures than would be possible in the pure high-melting-point aromatic solvents, which would be solid at operating conditions. (3) Evaluation of existing equations-of-state and other models for representation of phase behavior in systems of the type studied experimentally; development of new correlation frameworks as needed. (4) Generalization of the interaction parameters for the solutes studied to a wide spectrum of heavy solvents; presentation of final results in formats useful in the design/optimization of coal liquefaction processes. During the present report period, data have been obtained for the solubility of CO sub 2 in n-decane at 344.2 deg K and for ethane in n-decane at 310.9 deg K, and in naphthalene at 373.2 and 423.2 sup 0 K. 5 refs., 1 fig., 1 tab. (ERA citation 11:029176)