摘要
利用ＣｈａｏＳｅａｄｅｒ模型计算含氢体系气液平衡常数，计算结果在高压范围内普遍偏低，误差较大。提出了改进ＣＳ模型用于含氢体系气液平衡计算的两种方法。在进行模型改进时，选用了较典型的５个体系，１６８个实验点。用改进后的ＣＳ模型计算含氢体系的气液平衡，非氢组分的误差均比原模型的１１３５％低。在计算氢甲苯体系甲苯的气液平衡常数时，方法Ⅰ的平均误差为３２５％；方法Ⅱ的平均误差为５７０％。
The vapor liquid equilibra coefficients of H 2 hydrocarbon mixtures are calculated in Chao Seader model.Results show that the deviation is large at higher pressure range. Here are two different methods of improving C S model for calculating vapor liquid equilibra calculation of H 2 hydrocarbon mixtures from five typical systems and 168 data points. The average deviation of non hydrogen components of the improved C S models is smaller than the original deviation of 11.35%.The average deviation of improved model I is 3.25%,and improved model Ⅲ is 5.70% when using the improved models to calculate the K values in toluene of the H 2 toluene system.
出处
《大庆石油学院学报》
CAS
北大核心
1997年第4期30-33,共4页
Journal of Daqing Petroleum Institute
关键词
含氢体系
气液平衡
C-S模型
烃类
石油
H 2 hydrocarbon systems, vapor liquilibra, model, improvement, deviation
