摘要
利用自己建立的高压下测定气体在液体中溶解度的测定装置,在15-45℃、2.0-12.0 MPa的条件下,首次测定了甲烷在环已烷-乙醇、苯-乙醇混合体系中的溶解度。用PRSV状态方程及3种不同的混合规则对实验测定的气液平衡数据进行了计算。计算结果表明,使用同一种状态方程的不同混合规则计算极性体系的气液平衡数据所得的结果不同,改变传统的混合规则可提高计算精度。同时还使用Aalto-Keskinen模型及本研究提出的Yen-Woods-Aalto-Keskinen模型对实验得到的高压液相摩尔体积进行了估算,均得到满意的结果。
Experimental investigation was conducted for determining solubility of methane in cyclohexane -ethanol and benzene -ethanol at temperatures of 15,30,45 ℃ under different pressures in a special self-established apparatus, for high pressure gas solubility determination. The measured solubility data of methane were calculated by PRSV equation of state with three different mixing rules. Diversified calculation accuracy rusulted from three mixing rules. Calculation accuracy can be improved by the improving mixing rules. Aalto -Keskinen model and Yen - Woods - Aalto - Keskinen model advanced in this paper were used to estimate experimental molar volume data of liquids under high pressure. Both estimation results were satisfactory.
出处
《石油化工》
CAS
CSCD
北大核心
2004年第4期351-355,共5页
Petrochemical Technology
基金
中国石化股份有限公司基金项目(X502009)。
关键词
甲烷
气体溶解度
气液平衡
液体摩尔体积
状态方程
环己烷
苯
乙醇
methane
gas solubility
gas liquid equilibrium
molar volume of liquid
equation of state
cyclohexane
benzene
ethanol
