糠醛-环己醇-莰烯三元气液平衡数据的测定

Measurement of Vapor-Liquid Equilibrium Data in Furfural-Cyclohexanol-Camphene Ternary System

利用自制气液平衡装置测定糠醛-环己醇、糠醛-莰烯和糠醛-环己醇-莰烯在101.3 k Pa下的气液平衡数据。对所测得的数据进行关联与计算,得到Wilson方程参数。代入Wilson模型,计算出101.3 KPa条件下糠醛-环己醇、糠醛-莰烯2组二元体系的温度与气相组分的质量分数,与实验值比偏差不大,说明实验可行。用面积积分法验证两组二元气液平衡数据的热力学一致性,结果符合要求。通过测定糠醛-环己醇-莰烯三元气液平衡数据,并进行拟合,得到421.5K时糠醛的气相物质的量分数相对最高,环己醇的气相物质的量分数又相对最低,即在该温度下分离糖醛分环己醇较好,可为工程上分离糠醛和环己醇提供理论依据。

A self-made vapor-liquid equilibrium device was used to measure the vapor-liquid equilibrium data of furfuralcyclohexanol,furfural-camphene and furfural-cyclohexanol-camphene at 101. 3 k Pa. The Wilson equation parameters were obtained by the correlation and calculation of the measured data. The calculated data of temperature and the mass fractions of gaseous components of furfural-cyclohexanol and furfural-comphene at 101. 3k Pa were obtained by Wilson equation and agreed with the industrial data well. The thermodynamic consistency of the two groups binary vapor-liquid equilibrium data were checked with the area integral method. The results met the with requirements. The data of furfural-cyclohexanol-camphene ternary vaporliquid equilibrium were measured and fitted. The results showed that at 421. 5K,the molar fraction of furfural was the maximum and the molar fraction of cyclohexanol was the minimum in the vapor phase,so that furfural and cyclohexanol could be separated at this temperature. And it could be regarded as basic theory for the separation of furfural and cyclohexanol in engineering.