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

LUO Na; YE Zhencheng; ZHONG Weimin; QIAN Feng

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

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- Dynamic simulation of primary esterification section of poly(ethylene-terephthalate)
- CIESC Journal Issue 8, Pages: 1933-1941(2010)
- 作者机构：
  
  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
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：05 August 2010，
  
  Published：05 August 2010
- 稿件说明：
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LUO Na, YE Zhencheng, ZHONG Weimin, et al. Dynamic simulation of primary esterification section of poly(ethylene-terephthalate)[J]. CIESC Journal, 2010, (8): 1933-1941.
DOI：

LUO Na, YE Zhencheng, ZHONG Weimin, et al. Dynamic simulation of primary esterification section of poly(ethylene-terephthalate)[J]. CIESC Journal, 2010, (8): 1933-1941. DOI：

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。

Abstract

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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