【作者】 周清；

【导师】 马沛生；

【作者基本信息】 天津大学 ， 化学工艺， 2004， 硕士

【摘要】 本论文是中国石化总公司委托项目的一部分，涉及的内容主要是PTA生产过程中相关物系的密度和粘度的测定。在常压下利用日本产DA－505 U型振动管密度仪、乌氏毛细管粘度计测定了对二甲苯－环己烷、对二甲苯－正庚烷、苯－环丁砜、甲苯－环丁砜、乙基苯－环丁砜、邻二甲苯－环丁砜、间二甲苯－环丁砜、对二甲苯－环丁砜、环己烷－N-甲基-2-吡咯烷酮、苯－N-甲基-2-吡咯烷酮、甲苯－N-甲基-2-吡咯烷酮、乙基苯－N-甲基-2-吡咯烷酮、对二甲苯－N-甲基-2-吡咯烷酮共13个体系的密度和粘度。计算出了各个体系的超额摩尔体积VE和混和粘度的变化Δη, 并用Redlich-Kister方程分别对VE和Δη进行了回归。在高压下利用高温高压振动丝密度粘度仪测定了正戊烷、环已烷、正辛烷、异辛烷、苯、乙苯在不同温度范围内的密度和粘度。同时还测定了对二甲苯和环已烷的二元体系在不同组成下的密度和粘度。另外本论文在原有高温高压粘度密度仪的基础上又进行了进一步的改进，扩大了仪器的适用范围，并在验证仪器可靠性的基础上测定了对二甲苯、正庚烷和碳酸二甲酯三种纯物质的密度和粘度。更多还原

【Abstract】 This paper is about partial work supported by Chinese Petroleum Chemical Engineering Company. It is include measurement of density and viscosity related systems of PTA synthesized process.The densities and viscosities were measured by a vibrating densitometer (model DA-505 U) and a Ubbelohde suspended-level viscometer at atmospheric pressure for systems of p-xylene + cyclohexane, p-xylene + n-heptane, benzene + sulfolane, toluene + sulfolane, ethylbenzene + sulfolane, o-xylene + sulfolane, m-xylene + sulfolane, p-xylene + sulfolane, cyclohexane + N-methyl-2-pyrrolidone, benzene + N-methyl-2-pyrrolidone, toluene + N-methyl-2-pyrrolidone, ethylbenzene + N-methyl-2-pyrrolidone and p-xylene + N-methyl-2-pyrrolidone, total 13 systems. The excess molar volumes and deviation of viscosity were calculated. The VE and Δη were fitted by Redlich-Kister equation respectively.At high pressure, the density and viscosity for pure substances of the n-pentane, cyclohexane, n-octane, isooctane, benzene and ethylbenzene were measured by vibrating-wire viscometer in different temperature range. The binary mixture of the p-xylene and cyclohexane at different compositions were also measured.Furthermore, the vibrating-wire viscometer for high temperature and high pressure was improved. It expanded the measurement range of this instrument. Based on reliability confirmed by experiment, viscosities and densities of the p-xylene, n-heptane and dimethyl carbonate were measured.更多还原