CIESC Journal

• 化工过程与装备 • 上一篇    下一篇

乙烯利重排器的模拟分析与设计优化

张新平,王敏华,赵海泉,廖本仁   

  1. 上海华谊集团技术研究院,上海 200241
  • 出版日期:2011-12-05 发布日期:2012-03-02

Simulation and optimal design of the isomerization reactor in ethephon process

ZHANG Xinping,WANG Minhua,ZHAO Haiquan,LIAO Benren   

  1. Technology Research Institute of Shanghai HUAYI Group,Shanghai 200241,China
  • Online:2011-12-05 Published:2012-03-02

摘要:

重排是乙烯利生产中的关键步骤,本文建立了重排反应器数学模型,模拟表明重排器中物料停留时间不足,三(2-氯乙基)亚磷酸酯转化率低;预热和反应的高度耦合导致重排器操作范围窄、装置稳定性差。模拟结果与装置实际情况一致。因此,对重排器进行了优化设计,将其分解为预热器和重排反应器。结果表明通过优化设计,重排过程的操作稳定性大大加强,控制了反应器飞温,提高了亚酯转化率,减少了副反应的发生;并且新的重排工艺可以利用反应热预热原料,过程能耗降低。

Abstract:

Isomerization is a key step in ethylene production. In this papera mathematical model of the isomerization reactor is established. Simulation shows that the residence time is insufficient and conversion is lowhighly coupling preheat and reaction lead to a narrow operation range and poor stability in the isomerization unit. The simulation is consistent with the unit condition. Optimal design of isomerization reactor is carried out by decoupling it to a pre-heater and an isomerization reactor. Optimal design shows that operation stability of the isomerization reactor is significantly enhancedtemperature runaway of reactor is controlledside reaction is reduced and conversion is improved. And in the new isomerization processreaction heat can be used to preheat feed stock so as to reduce energy consumption.