摘要
本文建立了计算天然气在水中溶解度的状态方程.Mansoori-Carnahan-Starling表达式用于状态方程的斥力项,引力项用简单的Van der Waals形式.纯物质的参数由拟合纯物质的蒸汽压,饱和液相密度或超临界的PVT数据获得.模型用来关联60多个二元体系的汽液平衡(只用一个可调参数),计算值与实验值吻合很好.
An equation of state for calculating the solubility of natural gas in water are presented based on perturbation theory. The Mansoori-Carnahan-Starling expression is used for the repulsive part of the equation of state while the attractive part uses a simple Van der Waals form. Pure component parameters were obtained by fitting vapor pressure, saturation liquid density and supercritical PVT data. The equation of state is applied to correlate the vapor-liquid equilibrium in more than sixty binary mixtures with only one adjustable parameter for one binary mixture. For hydrocarbon-hydrocarbon systems the binary interaction parameters can be set to zero while those for gas-water systems depend upon temperature. Satisfactory results are obtained.
出处
《石油学报（石油加工）》
EI
CAS
CSCD
北大核心
1990年第2期65-74,共10页
Acta Petrolei Sinica(Petroleum Processing Section)
