Simulation and analysis of a side stream reactive distillation-pervaporation integrated process for ethyl acetate production

JIN Hao; LU Jiawei; TANG Jihai; ZHANG Zhuxiu; FEI Zhaoyang; LIU Qing; CHEN Xian; CUI Mifen; QIAO Xu

doi:10.11949/j.issn.0438-1157.20180154

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Simulation and analysis of a side stream reactive distillation-pervaporation integrated process for ethyl acetate production

更新时间：2025-12-10

- Simulation and analysis of a side stream reactive distillation-pervaporation integrated process for ethyl acetate production
- CIESC Journal Issue 8, Pages: 3469-3478(2018)
- 作者机构：
  
  1. 材料化学工程国家重点实验室, 南京工业大学化工学院,江苏,南京,210009
  2. 国家“江苏先进生物与化学制造协同创新中心”,江苏,南京,210009
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20180154
  CLC： Q028.8
- Online First：05 August 2018，
  
  Published：05 August 2018
- 稿件说明：
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JIN Hao, LU Jiawei, TANG Jihai, et al. Simulation and analysis of a side stream reactive distillation-pervaporation integrated process for ethyl acetate production[J]. CIESC Journal, 2018, (8): 3469-3478.
DOI：

JIN Hao, LU Jiawei, TANG Jihai, et al. Simulation and analysis of a side stream reactive distillation-pervaporation integrated process for ethyl acetate production[J]. CIESC Journal, 2018, (8): 3469-3478. DOI： 10.11949/j.issn.0438-1157.20180154.

摘要

针对乙酸酯化法生产乙酸乙酯分离过程复杂、能耗大的缺点，提出了一种带侧线反应精馏-渗透汽化（RD-PV）集成过程。通过反应精馏塔侧线采出和渗透汽化膜组件及时移出水分，促进酯化反应向正反应方向进行，在达到乙酸高转化率的同时使乙酸乙酯产品达到高纯度。研究了反应精馏塔侧线采出位置、采出比、反应段塔板数、精馏段塔板数以及膜组件个数等对年度总成本（TAC）的影响，获得了TAC达到最小的过程参数。与传统双塔精馏分离过程对比，RD-PV集成过程节省能耗26.6%，但膜材料价格对RD-PV集成过程的TAC有较大影响，随着渗透汽化技术的成熟，当膜材料价格低于1913 CNY·m-2时，RD-PV集成过程在经济上占据优势。

Abstract

Due to the complicated process and huge energy consumption of ethyl acetate production via esterification of acetic acid and ethanol

a reactive distillation and pervaporation integrated process was proposed. The byproduct water was removed from the system through the side stream of the column and membrane modules

which promoted the forward reaction and improved the purity of ethyl acetate. The effect of the process parameters on total annual cost was investigated. The parameters included side stream drawn stage

side stream flowrate ratio

reactive stages

rectifying stages and number of membrane modules. Compared with conventional double-column process

the proposed RD-PV integrated process saved 26.6% energy. Through the investigation

it was found that the price of membrane material had significant effect on the total annual cost of RD-PV integrated process. With the development of pervaporation technology

the RD-PV process would appear economically competitive

when the price of membrane material is lower than 1913 CNY·m-2.

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