Modeling of Phase Equilibria in the H(2)S-H(2)O System with the Statistical Associating Fluid Theory

作者：Ji Xiaoyan^*; Zhu Chen

来源：Energy & Fuels, 2010, 24: 6208-6213.

DOI：10.1021/ef100847j

The phase equilibria of the binary system of H(2)S-H(2)O are represented using the statistical associating fluid theory H(2)S is modeled as a molecule with four association sites, i e, two sites of type S and two sites of type H and sites of the same type do not associate with each other The parameters of H(2)S are fitted to its vapor pressure and saturated liquid density Cross-association between the site H in H(2)S and the site O in H(2)O is allowed, and two temperature dependent parameters are used to describe this cross association A temperature-dependent binary interaction parameter is used to correct the cross-dispersive energy for this binary system Cross-parameters are fitted to mole fractions in both H(2)S rich/vapor and H(2)O rich phases The model is found to represent well the phase equilibria of the H(2)S-H(2)O system from 273 to 630 K and at pressures up to 200 bar

• 出版日期2010-11