【作者】 谢心亮；

【导师】 邱祖民；

【作者基本信息】 南昌大学 ， 化学工艺， 2005， 硕士

【摘要】 本文采用泵式沸点仪,建立了一套测定恒压下汽液相平衡数据的装置,该装置亦可用于具有化学反应等复杂系统的VLE数据测定。压力控制采用二级自动恒压装置,压力波动范围不大于10Pa。系统温度用校正的最小刻度0.1℃精密温度计测定。 在101.325kPa下用这套装置分别测定了甲基二氯硅烷-甲基三氯硅烷、甲基二氯硅烷-二甲基二氯硅烷、甲基二氯硅烷-苯、甲基三氯硅烷-二甲基二氯硅烷、甲基三氯硅烷-苯和二甲基二氯硅烷-苯六个二元体系的沸点与液相组成的实验值;甲基二氯硅烷-甲基三氯硅烷-二甲基二氯硅烷、甲基二氯硅烷-甲基三氯硅烷-苯、甲基二氯硅烷-二甲基二氯硅烷-苯和甲基三氯硅烷-二甲基二氯硅烷-苯四个三元体系沸点与液相组成的实验值;甲基二氯硅烷-甲基三氯硅烷-二甲基二氯硅烷-苯一个四元体系沸点与液相组成的实验值。用Q函数法对甲基二氯硅烷-甲基三氯硅烷、甲基二氯硅烷-二甲基二氯硅烷、甲基二氯硅烷-苯、甲基三氯硅烷-二甲基二氯硅烷、甲基三氯硅烷-苯和二甲基二氯硅烷-苯六个二元系由Tpx推算汽相组成y,然后用Margules、van Laar、Wilson和NRTL活度系数模型进行关联求得相应的最佳模型参数。由六组二元系的Wilson最佳模型参数推算了相应三元系和四元系的汽液平衡数据,推算的泡点与实测的沸点吻合良好。更多还原

【Abstract】 In this paper, a magnetically pump-ebulliometer was used for measuring the isobaric vapor-liquid equilibrium (VLE) data, which also can be used to determine the data of the mixture liquid there are complex chemical reactions. The pressure, undulating within 10Pa, was steadily controlled by a set of automation. The equilibrium temperature was measured by a calibrated thermometer with an accuracy of 0.1 ℃.At 101.325kPa, the boiling points of six binary systems: methyldichlorosilane-methyltrichlorosilane,methyldichlorosilane-dimethyldichlorosilane, methyldichlorosilane-benzene, methyltrichlorosilane-dimethyldichlorosilane, methyltrichlorosilane-benzene and dimethyldichlorosilane-benzene; three ternary systems: methyldichlorosilane-methyltrichlorosilane-dimethyldichlorosilane, methyldichlorosilane-methyltrichlorosilane-benzene, methyldichlorosilane-dimethyldichlorosilane-benzene and methyltrichlorosilane-dimethyldichlorosilane-benzene; one quaternary system: methyldichlorosilane-methyltrichlorosilane-dimethyldichlorosilane-benzene were determined in the different liquid phase compositions with this apparatus. With the Q function of molar excess Gibbs energy, the vapor phase compositions of the six binary systems were calculated from Tpx by the indirect method, then the VLE data of the six binary systems were respectively correlated with Margules, van Laar, Wilson and NRTL equations, which acquire the optimum model parameters of liquid activity coefficient. The Wilson optimum model parameters of liquid activity coefficient were correlated by the least square method. With the use of Wilson equation and correlated Wilson optimum model parameters of the binary systems, the VLE data of the three ternary systems and the quaternary system were predicted. The predicted bubble-point temperatures were in good agreement with the experimental results.更多还原