详细信息

聚酯装置酯化生产过程动态模拟  ( EI收录)  

Dynamic simulation of primary esterification section of poly(ethylene-terephthalate)

文献类型:期刊文献

中文题名:聚酯装置酯化生产过程动态模拟

英文题名:Dynamic simulation of primary esterification section of poly(ethylene-terephthalate)

作者:罗娜[1,2];叶贞成[1,2];钟伟民[1,2];钱锋[1,2]

机构:[1]华东理工大学信息科学与工程学院,上海200237;[2]化工过程先进控制和优化技术教育部重点实验室,上海200237

年份:2010

卷号:61

期号:8

起止页码:1933

中文期刊名:化工学报

外文期刊名:CIESC Journal

收录:CSTPCD;;EI(收录号:20103413174734);Scopus;北大核心:【北大核心2008】;CSCD:【CSCD2011_2012】;

基金:国家杰出青年科学基金项目(60625302);国家重点基础研究发展计划项目(2009CB320603);长江学者和创新团队发展计划项目(IRT0712);高等学校学科创新引智计划项目(B08021);上海市重点学科建设项目(B504)~~

语种:中文

中文关键词:聚酯;酯化过程;动态模拟;控制策略

外文关键词:poly(ethylene-terephthalate); esterification process; dynamic simulation; control strategies

摘要:动态模型是进行生产过程动态优化的基础。本文采用链段法建立了聚酯装置酯化生产过程反应器和工艺塔相互影响的动态模型,分析了基本控制系统作用下过程操作工况的动态阶跃响应特性。模拟结果表明,酯化反应器进料摩尔配比及反应器温度、压力、液位的调整显著影响了酯化过程气相流的变化,且对反应产物中端羧基含量和聚合度等指标的响应比较灵敏;控制系统对稳定酯化生产过程操作起着显著的作用。
Dynamic model is the basis of dynamic optimization in chemical process.In this paper a dynamic model for esterification section of poly(ethylene-terephthalate) (PET) was developed using segment method.Different from other researches,the model considered the interaction between esterification reactor and the column.Dynamic responses of process operating condition were analyzed with basic control strategies.Simulation results show that properties of products such as carboxyl end concentration,degree of polymerization response quickly to step change of feed molar ratio,reactor temperature,pressure and liquid level.Also these step changes significantly affected the changes in gas flow of ethylene glycol and water.Control system plays a significant role in the stability of PET esterification process.

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