摘要
改进的Peng-Robinson方程结合经典的二次型混合规则,在含N_2、CH_4、CO_2体系的高压汽液平衡(VLE)数据关联中获得了与温度无关的二元交互系数K_(ij)用于推算其三元VLE取得了简便有效的结果。压力平均百分偏差2.65％,汽相组成绝对平均偏差1.24％。
Temperature independent binary interaction coefficients K_ were obtained on the correlation of Vapor-Liquid Equilibrium (VLE) at high pressure for systems containing N_2、CH_1、CO_2. by two proposed modified PR equations of state. Satisfactory results could be obtained on the estimation of VLE for the Ternary system N_2-CH_4-CO_2. The average percentage deviation of pressure is 2.65% and the absolute average deviation of vapor composition is 1.24%.
关键词
汽液平衡
高压
气田开发
二氧化碳
modified PR equation
N_2-CH_4-CO_2 system
VLE calculation
