Industry/University Cooperative Project: Liquid-Liquid- Vapor Phase Equilibria Behavior in Rich Gas + Hydrocarbon Mixtures (PUI)

对选定的乙烷+烃二元体系和乙烷+丙烷+烃三元体系的相平衡行为进行了实验研究，有助于理解富气强化采油体系的相平衡行为。研究了乙烷+正石蜡和乙烷+正烷基苯二元混合物的气-液、液-液-气、固-液-气相平衡。本文还研究了乙烷+丙烷+正石蜡三元混合物的气液平衡和液-液-气相平衡，以评价乙烷+丙烷的适当溶剂混合物对非液-液-气不相溶的烃类的液-液-气相行为。研究是在0至125的温度范围内用视觉细胞装置进行的；soC压力高达1500 psia。

An experimental study is conducted of the phase equilibria behavior of selected ethane + hydrocarbon binary and ethane + propane + hydrocarbon ternary mixtures, which can contribute to the understanding of the phase equilibria behavior of rich gas-enhanced oil recovery systems. Vapor-liquid, liquid-liquid-vapor, and solid-liquid-vapor phase equilibria of binary mixtures of ethane + n-paraffins and ethane + n-alkylbenzenes are studied. Also, the vapor-liquid and liquid-liquid-vapor phase equilibria of a ternary mixture of ethane + propane + n-paraffin are studied to evaluate how liquid-liquid-vapor phase behavior can occur in an appropriate solvent mix of ethane + propane for a hydrocarbon which is not liquid-liquid-vapor immiscible with either solvent species. The studies are performed with a visual cell apparatus in the temperature range of 0 to 125;soC at pressures up to 1500 psia.