常低压下醋酸体系汽液相平衡数据的测定

食品科学论文编号:SP091  论文字数:4713,页数:15  附任务书，开题报告，文献综述，外文翻译.PPT

目  录
中文摘要 I
英文摘要 II
目录 III
1. 绪论 1
 1.1 萃取剂和醋酸的性质 1
 1.2 本课题研究目的及意义 1
2. 实验部分 3
 2.1 试剂 3
 2.2实验装置 3
 2.3实验方法 4
 2.4分析方法 5
3. 结果与讨论 6
 3.1 汽液相平衡数据 6
 3.2 热力学一次性检验 6
 3.3 热力学模型 6
 3.4 二元汽液相平衡数据的关联 7
 3.5 醋酸-水-萃取剂三元汽液相平衡数据的预测 11 
4．总结与展望 12
致谢 13
参考文献 14
符号说明 15

摘 要：汽液平衡数据是重要的化工基础数据，用改进的Rose汽液平衡釜,测定了101.33kPa和13.33kPa下醋酸+萃取剂A体系的汽液平衡数据,并通过热力学一致性逐点校验，然后考虑醋酸在汽相中的缔合效应和非理想性，用MATLAB工具箱函数回归出Van Laar、、Wilson及NRTL模型参数及关联偏差。结果表明, NRTL方程关联结果较好,温度平均偏差0.2583℃，醋酸在汽相中的平均偏差为0.0027。
关键词：醋酸；MATLAB；汽液平衡

Abstract: Vapor-Liquid Equilibrium（VLE）data is an important foundation for the chemical data, Isobaric vapor-liquid equilibrium (VLE) data for acetic acid+ extraction of A system was measured at 101.33kPa and 13.33kPa by using an improved Rose still. Themodynamic consistency for the experimental data was examined by using point by point test, and the fugacity coefficients of components in the vapor phase were calculated by Hayden-O’connell method. Finally, use MATLAB toolbox function back to return the Van Laar, Wilson and NRTL model parameters and correlation deviation. For NRTL model, the average absolute deviation in vapor-phase is 0.0027, and the average absolute deviation of the equilibrium temperature is 0.2583℃.
Key words:  acetic acid;  MATLAB;  vapor-liquid equilibrium