Phase equilibrium data for development of correlations for coal fluids: Quarterly report, January 15, 1989--April 15, 1989

The effective design and operation of processes for conversion of coal to fluid fuels requires accurate knowledge of the phase behavior of the fluid mixtures encountered in the conversion processes. The overall objective is to develop accurate predictive methods for representation of vapor-liquid equilibria in systems encountered in coal-conversion processes. During the present report period, data have been obtained on the solubility of methane in n-decane at 310.9 K, 344.3 K, 377.6 K and 410.9 K, and in n-eicosane (n-C/sub 20/) at 323.2 K, 373.2 K, and 431.2 K. These data are well described by the Soave and Peng-Robinson equations of state and the Krichevsky-Kasarnovsky correlation. The present data for methane and + n-decane system are in reasonable agreement with those reported by Remear and co-workers. For methane + n-eicosane at 122/degree/F, 212/degree/F and 302/degree/F, no previous data are available for comparison. 14 refs., 4 figs., 5 tabs.