甲基二氯硅烷-甲基三氯硅烷-甲苯三元体系等压汽液平衡

In this paper, the boiling points of methyldichlorosilane-methyltrichlorosilane-toluene system and of the three binary systems are determined at 101.3 kPa with a new type of magnetic pump-ebulliometer.The VLE data of the three binary systems, respectively,are correlated with the Margules, van Laar, Wilson, and NRTL equations. The equilibrium composition of the vapor phase of three binary systems are calculated from TPX by indirect method. Activity coefficients are calculated after accounting for the nonideality of the vapor phase. The model parameters of liquid activity coefficient are correlated by the least square method. The vapor pressure of the pure components are obtained by using Antoine constants from the literature. The VLE data of ternary system are predicted by the Wilson equation. The calculated boiling points show good agreement with the experimental data.     

甲基三氯硅烷、甲基乙烯基二氯硅烷、甲苯的二元及三元体系等压汽液平衡

引　言甲基乙烯基二氯硅烷是重要的有机硅单体和硅烷偶联剂 ,在硅橡胶、涂料、印染、化妆品等领域有着广泛的应用 .在合成甲基乙烯基二氯硅烷的过程中 ,甲苯作为均相催化剂的载体以及反应的媒介体循环使用 ,甲基三氯硅烷是副产物 ,在分离过程的设计中需要有关甲基三氯硅烷、甲基乙烯基二氯硅烷、甲苯体系的汽液平衡数据 ,此前文献尚未见报道 .为了满足过程开发与工程设计的需要 ,本研究测定了甲基三氯硅烷、甲基乙烯基二氯硅烷和甲苯三元体系及其 3个二元体系的相平衡数据 ,并进行了热力学关联 .1　实验部分1 1　试　剂甲基三氯硅烷 :江西蓝…     

甲基二氯硅烷-甲基乙烯基二氯硅烷-甲苯三元体系等压汽液平衡

Vapor-liquid euilibrium (VLE) for a ternary system of Methyldichlorosilane methylvinyldichlorosilane toluene and constituent binary systems were measured at 101.3kPa using a new type of magnetical pump-ebulliometer,The equilibrium conpositions of the vapor phase of binary systems were calculated indirectly from the total pressure-temperature-liquid composition(pTx).The experimental data were correlated with the Wilson and NRTL(non-random two liquid )equations.The parameters of the Wilson moldel were employed to predict the ternary VLE data .The calculated boiling points were in good agreement with the experimental ones.