用改进的PR方程关联推算N_2-CH_4-CO_2体系的高压汽液平衡  

CORRELATION AND ESTIMATION OF VAPOR LIQUID EQUILIBRIA FOR N_2-CH_4-CO_2 TERNARY SYSTEM BY MODIFIED PENG ROBINSON EQUATIONS

作　　者：董军航[1] 徐南平[1] 王延儒[1] 时钧[1] 

机构地区：[1]南京化工学院化学工程系

出　　处：《南京化工学院学报》1993年第3期12-16,共5页

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 

分 类 号：TE311[石油与天然气工程—油气田开发工程]