Selection of extractive agent for mixture chlorobenzene and measurement of VLE data for m-dichlorobenzene-p-dichlorobenzene -o-dichlorobenzene -diphenylamine

Extractive agents of extractive distillation separation for mixtures of dichlorobenzene were analyzed and compared, gas-liquid equilibrium data （VLE data） was measured for dichlorobenzene and diphenylamine, the appropriate extractive agent was selected by relatively volatility, the temperature was studied on the effect of extractive separation. VLE data was measured for dichlorobenzene, the parameters were simulated in Wilson equation. The infinite dilute activity coefficient of dichlorobenzene in diphenylamine were measured by chromatogram apparatus, the model parameters were correlated by the single parameter method for dichlorobenzene and diphenyl -amine, VLE data of m-dichlorobenzene-p- dichlorobenzene -o-dichlorobenzene-diphenylamine system was measured and calculated by six part model parameters. The results of correlation and experiment were provided a basis for study of extractive distillation simulation and experiment in this work.

Measurement and modelization of VLE of binary mixtures of propyl acetate,butyl acetate or isobutyl acetate with methanol at pressure of 0.6 MPa

The vapor-liquid equilibrium of binary mixtures of propyl acetate, butyl acetate and isobutyl acetate with meth- anol has been determined at a constant pressure of 0.6 MPa. Results have been modeled with the Peng-Robinson equation, a traditional cubic equation of state widely employed in chemical industries, as well as with the perturbed-chain statistical associating fluid PC-SAFT theory of Gross-Sadowski. By correlation of the binary inter- action parameters of these equations, the measured vapor-liquid equilibrium data can be accurately predicted. Thus, this work shows that these models are able to represent the experimental data for systems with associating comoounds via hydrogen bonding.

正己烷-甲基环戊烷-邻苯二甲酸二丁酯汽液平衡数据测定及关联

采用Ｇｉｌｃｓｐｉｅ平衡釜测定正己烷－甲基环戊烷－邻苯二甲酸二丁酯系统的ＶＬＥ数据；用Ｗｉｌｓｏｎ方程关联，为萃取模拟计算提供参数。

乙酸乙酯-乙醇-水-甘油体系中部分组分之间汽液平衡数据的测定及关联

生产乙酸乙酯的产物乙醛、乙醚采用精馏容易脱除，乙酸乙酯、乙醇、水形成二元、三元共沸物，则难以分离，共沸法和萃取精制乙酸乙酯，工艺较复杂，能耗大；复合萃取一次可得99％以上乙酸乙酯，同时可得95％以上乙醇，用水量仅为原料量的2倍，工艺简单，能耗低。本文测定乙酸乙酯、乙醇、水在甘油中的γ^∝及二元体系的VLE数据，由三对二元体系模型参数计算乙酸乙酯-水-甘油及乙酸乙酯一乙醇一甘油的VLE数据，为萃取模拟计算及试验提供基础数据。

UNIFAC关联甲醇-碳酸二甲酯汽液平衡

在101.32 kPa下,用改进的Othmer釜测定了甲醇-碳酸二甲酯二元物系的等压汽液平衡数据。利用UNIFAC模型对实验数据进行了拟合,得到了新基团—OCOO—与—CH_3—,CH_3OH基团间的UNIFAC作用参数,扩充了UNIFAC模型的应用范围。与原始基团划分的UNIFAC模型关联结果相比,采用新基团划分法推算得到的汽液平衡数据与实验值偏差更小,说明新基团划分更合理,并利用拟合的参数对含有碳酸酯物系的汽液平衡进行了验证。

二氯苯与二苯胺体系汽液平衡数据测定及关联

采用色谱法测定二氯苯在二苯胺中无限稀释活度系数,并采用单参数法关联W ilson方程中模型参数;测定二氯苯之间的二元体系汽液平衡数据,采用三对二元体系模型参数关联对二氯苯-邻二氯苯-二苯胺、间二氯苯-邻二氯苯-二苯胺及对二氯苯-间二氯苯-二苯胺体系的汽液平衡数据,并与实验值比较;采用5对二元体系模型参数结合四元体系的汽液平衡实验数据,用最小方差法关联四元体系中第6对模型参数,并计算四元体系的汽液平衡数据,与实验值比较,实验与计算值误差均小于5%。实验和计算结果为混合二氯苯的萃取精馏分离提供基础数据。

新型双循环釜的建立及其应用

建立了一种新型双循环汽液平衡釜,设计中着重考虑了提高温度稳定性、组成可靠性和平衡速率的各种措施。该釜应用于等温和等压汽液平衡数据的测定,获得了满意的结果。

汽液平衡盐效应数据的检验

在热力学及Debye_H櫣ｃｋｅｌ离子互吸理论基础上提出在盐浓度较稀 (m <2mol/kg)条件下汽液平衡盐效应数据的检验方法 .该方法理论严格 ,使用方便 ,不仅能对数据的整体质量进行评价 。

乙酸乙酯-乙醇-水-甘油体系中三元及四元体系的汽液平衡数据测定及推算(英文)

设计了液液平衡釜,测定乙酸乙酯-乙醇-甘油、乙酸乙酯-水-甘油及乙醇-水-甘油三元体系的VLE 数据;以Wilson 方程为平衡模型,由两对二元模型和三元体系的VLE 实验数据关联第三对模型参数;测定乙酸乙酯-乙醇-水-甘油体系的VLE数据,由二元模型参数及三元体系的VLE 实验数据计算乙酸乙酯-乙醇-水-甘油体系的VLE 数据并与实验数据比较;本文测定结果及计算结果为乙酸乙酯-乙醇-水、乙酸乙酯-乙醇体系的萃取分离模拟计算及试验提供基础数据。