Vapor-liquid equilibrium for methanol + polyoxymethylene dimethyl ethers binary system under normal atmospheric pressure

WANG Fengyang; LIANG Huanhuan; ZHOU Cairong

doi:10.11949/j.issn.0438-1157.20151985

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Vapor-liquid equilibrium for methanol + polyoxymethylene dimethyl ethers binary system under normal atmospheric pressure

更新时间：2025-11-26

- Vapor-liquid equilibrium for methanol + polyoxymethylene dimethyl ethers binary system under normal atmospheric pressure
- CIESC Journal Issue 7, Pages: 2685-2691(2016)
- 作者机构：
  
  郑州大学化工与能源学院,河南,郑州,450001
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20151985
  CLC： 642.42
- Online First：05 July 2016，
  
  Published：05 July 2016
- 稿件说明：
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WANG Fengyang, LIANG Huanhuan, ZHOU Cairong. Vapor-liquid equilibrium for methanol + polyoxymethylene dimethyl ethers binary system under normal atmospheric pressure[J]. CIESC Journal, 2016, (7): 2685-2691.
DOI：

WANG Fengyang, LIANG Huanhuan, ZHOU Cairong. Vapor-liquid equilibrium for methanol + polyoxymethylene dimethyl ethers binary system under normal atmospheric pressure[J]. CIESC Journal, 2016, (7): 2685-2691. DOI： 10.11949/j.issn.0438-1157.20151985.

摘要

在101.3 kPa恒定压力下，采用改进的Rose汽液平衡釜测定了甲醇-DMM3（聚甲氧基二甲醚，聚合度为n，即DMMn）二元体系汽液平衡数据，并对汽液平衡数据进行热力学一致性检验，结果表明所测定数据符合Gibbs-Duhenm的热力学一致性。用Aspen Plus v7.1计算机软件，分别对Wilson、NRTL、UNIQUAC活度系数模型进行关联，由最大似然法对目标函数进行优化，回归出相应的二元交互作用参数。将关联结果与实验结果相比较，得到关联值与实验值的温度和汽相组成的平均绝对偏差，分别小于0.65 K和0.0065。为化工数据库增添了内容，也为含甲醇、DMM3体系的工程设计和进一步深入研究奠定了基础。

Abstract

At 101.3 kPa constant pressure

the VLE data of methanol-DMM3 (polyoxymethylene dimethyl ethers with degree of polymerization of n

i.e.

DMMn) system were determined by using an improved Rose still. Thermodynamic consistency of the obtained vapor liquid equilibrium data were examined. The results were satisfied with Gibbs-Duhenm's thermodynamic consistency. The VLE data were correlated by Wilson

NRTL and UNIQUAC activity coefficient model by Aspen Plus v7.1. The objective function was optimized by the maximum likelihood method and the corresponding model parameters were returned. Compared with the experimental results

the average absolute deviations for temperature and the composition in the vapor phase were less than 0.65 K and 0.0065

respectively. This work provides the important engineering data for an engineering design and further study in the multicomponent system containing methanol and DMM3.

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