解决二元气液平衡系统相图实验中分馏效应的温度补偿方法

大学化学 Pub Date : 2020-01-01 DOI:10.3866/pku.dxhx201905002

Liping Song, Yating Wang, Ou Zheng, Shuting Wu, Shuying Zhu, Jianzhong Chen

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引用次数: 0

摘要

本文对相图展开实验装置进行了改进，使之能同时测量汽液平衡体系的沸点和露点。此外，还绘制了环己烷-乙醇在不保温、保温和温度补偿条件下的气液相图，并进行了比较。结果表明:单纯保温和不保温的汽液平衡体系的沸点温度和露点温度存在较大差异，以沸点温度为基础的气相线存在严重畸变。对系统进行温度补偿后，根据沸点和露点温度得到的两条气相线吻合较好，解决了气相分馏效果问题。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Temperature Compensation Method to Solve the Fractionation Effect in the Experiment of Binary Vapor-Liquid Equilibrium System Phase Diagram

In this paper, the device for phase diagram development experiment has been modified, which can be used to measure the boiling point and dew point of vapor-liquid equilibrium system simultaneously. In addition, the vapor-liquid phase diagrams of cyclohexane-ethanol under the conditions of no heat preservation, heat preservation and temperature compensation are drawn and compared. Results show that there is a great difference between the temperatures of boiling point and dew point both for the vapor-liquid equilibrium system with the simple heat preservation or without the heat preservation, and the vapor-phase lines based on the boiling point temperature are seriously distorted. With the temperature compensation for the system, the two vapor-phase lines according to the boiling point and the dew point temperature are in good agreement, which means the problem of vapor-phase fractionation effect has been solved.

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来源期刊

大学化学

自引率

0.00%

发文量

5852

期刊介绍： University Chemistry is an educational research academic journal supervised by the Ministry of Education and co-sponsored by Peking University and the Chinese Chemical Society. It was founded in 1986 and changed to a monthly publication in January 2016. Its purpose is to promote and deepen the reform of university chemistry education and serve to improve the level of chemistry teaching in my country. The main columns are: Today's Chemistry, Teaching Research and Reform, Knowledge Introduction, Chemical Experiments, Teacher-Student Chats, Future Chemists, etc. The journal has been included in many databases such as China Journal Network Full-text Database, Wanfang Database, Taiwan Huayi Database, Chinese Science and Technology Journal Database (Full-text Edition), and American Chemical Abstracts.