Journal of Petrochemical Universities ›› 2008, Vol. 21 ›› Issue (2): 55-58.

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Gas-Liquid Phase Equilibrium of Methyl Chloride-n-Hexane Binary System Calculated by SRK State Equation

SHANG Yu-wei1, ZHANG Yan2, GUO Wen-li1， LI Shu-xin1
  

  1. （1．Faculty of Material Science and Engineering，Beijing Institute of Petrochemical Technology, Beijing 102617,P.R.China；2.College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029,P.R.China）
  • Received:2007-08-31 Published:2008-06-20 Online:2017-06-28

SRK状态方程计算CH3Cl-n-C6H14二元体系气液相平衡

商育伟1, 张 艳2, 郭文莉1, 李树新1   

  1. (1.北京石油化工学院材料科学与工程系,北京102617; 2.北京化工大学化学工程学院,北京100029)
  • 作者简介:商育伟(1977-),女,辽宁大石桥市,讲师,硕士。
  • 基金资助:
    中国石油化工股份有限公司北京燕山分公司资助项目(4J0006); 北京市教委资助项目(KM200510017002)。

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Abstract:

Gas-liquid phase equilibrium data of methyl chloride-n-hexane binary system was measured by phase equilibrium apparatus in which liquid circulates. Experimental data was regressed and Binary parameter of methyl chloride and n-hexane kij was calculated by SRK state equation，which is 0.05. It was found that liquid phase constitute of methyl chloride in n-hexane decreases with the increase of temperature，but increases with the increase of pressure.The average standard deviation of CH3Cl gas constitute was 1.076 4% and the average standard deviation of pressure was 0.985 4%, which explain SRK state equation is accurate in regressing gas-liquid phase equilibrium data.Basing on it, gas-liquid phase equilibrium data of methyl chloride-n-hexane binary system in all concentration range were calculated. p-x,y phase graph at 25,30,40,50 ℃ was obtained.

Key words:

摘要： 利用液相单循环气液相平衡釜对一氯甲烷-正己烷二元体系气液相平衡进行测定,利用SRK状态方程对实验数据进行回归并拟合出二元交互作用参数kij ,其值为0.05。CH3Cl的液相组成随着温度的升高而减小,随着压力的升高而增大。CH3Cl气相组成的平均标准偏差为1.0764%,总压的平均标准偏差为0.9854%,说明SRK
状态方程在拟合一氯甲烷-正己烷气液相平衡方面是精确的。在此基础上,对一氯甲烷-正己烷二元体系的全浓度范围内的气液相平衡数据进行了计算,得到了25,30,40,50℃时二元体系的p-x,y 相图。

关键词: 一氯甲烷, 正己烷, 相平衡, SRK状态方程

Cite this article

SHANG Yu-wei, ZHANG Yan, GUO Wen-li， LI Shu-xin.

Gas-Liquid Phase Equilibrium of Methyl Chloride-n-Hexane Binary System Calculated by SRK State Equation
[J]. Journal of Petrochemical Universities, 2008, 21(2): 55-58.

商育伟, 张 艳, 郭文莉, 李树新. SRK状态方程计算CH3Cl-n-C6H14二元体系气液相平衡[J]. 石油化工高等学校学报, 2008, 21(2): 55-58.

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