Correlations for estimating critical constants, acentric factor, and dipole moment for undefined coal-fluid fractions

Correlations have been developed to estimate critical constants, acentric factor, and dipole moment of model coal compounds and other hydrocarbons and their derivatives. The correlations express the characterization parameters as functions of normal boiling point, specific gravity, and molecular weight, which are the inspection data normally obtained for undefined petroleum and coal fluids. Currently available correlations are applicable only to petroleum and nonpolar coal-fluid fractions. The present correlations extend the range of application to polar and associating fluids.