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

doi:10.11949/j.issn.0438-1157.20180154

CIESC Journal ›› 2018, Vol. 69 ›› Issue (8): 3469-3478.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

JIN Hao¹, LU Jiawei¹, TANG Jihai^1,2, ZHANG Zhuxiu¹, FEI Zhaoyang¹, LIU Qing¹, CHEN Xian¹, CUI Mifen¹, QIAO Xu^1,2

1 State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, Jiangsu, China;
2 Jiangsu National Synergetic Innovation Center for Advanced Materials(SICAM), Nanjing 210009, Jiangsu, China

Received:2018-02-02 Revised:2018-05-30 Online:2018-08-05 Published:2018-08-05
Supported by:
supported by the National Key R&D Program of China (2017YFB0307304), the National Natural Science Foundation of China (21276126, 61673205), the Project "333" of Jiangsu Province (BRA2016418), the Six Major Talent Peak Project of Jiangsu Province (XCL-017) and the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD).

带侧线反应精馏-渗透汽化生产乙酸乙酯集成过程模拟与分析

金浩¹, 陆佳伟¹, 汤吉海^1,2, 张竹修¹, 费兆阳¹, 刘清¹, 陈献¹, 崔咪芬¹, 乔旭^1,2

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

通讯作者: 汤吉海
基金资助:
国家重点研发计划项目（2017YFB0307304）；国家自然科学基金项目（21276126，61673205）；江苏省"333工程"项目（BRA2016418）；江苏省"六大人才"高峰项目（XCL-017）；江苏高校优势学科建设工程项目（PAPD）。

Abstract

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.

Key words: reactive distillation, pervaporation, integration, computer simulation, ethyl acetate

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。

关键词: 反应精馏, 渗透汽化, 集成, 计算机模拟, 乙酸乙酯

CLC Number:

TQ028.8

JIN Hao, LU Jiawei, TANG Jihai, ZHANG Zhuxiu, FEI Zhaoyang, LIU Qing, CHEN Xian, CUI Mifen, QIAO Xu. Simulation and analysis of a side stream reactive distillation-pervaporation integrated process for ethyl acetate production[J]. CIESC Journal, 2018, 69(8): 3469-3478.

金浩, 陆佳伟, 汤吉海, 张竹修, 费兆阳, 刘清, 陈献, 崔咪芬, 乔旭. 带侧线反应精馏-渗透汽化生产乙酸乙酯集成过程模拟与分析[J]. 化工学报, 2018, 69(8): 3469-3478.

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

带侧线反应精馏-渗透汽化生产乙酸乙酯集成过程模拟与分析

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