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)
【知识点链接】反应精馏

【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;

【DOI】

【基金资助】 国家重点研发计划项目 (2017YFB0307304) supported by the National Key R&D Program of China (2017YFB0307304) 国家自然科学基金项目 (21276126, 61673205) the National Natural Science Foundation of China (21276126;61673205) 江苏省“333工程”项目 (BRA2016418) the Project“333”of Jiangsu Province (BRA2016418) 江苏省“六大人才”高峰项目 (XCL-017) the Six Major Talent Peak Project of Jiangsu Province (XCL-017) 江苏高校优势学科建设工程项目 (PAPD) the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)

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This Article

ISSN:0438-1157

CN: 11-1946/TQ

Vol 69, No. 08, Pages 3469-3478

August 2018

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Article Outline

知识点

摘要

  • 引言
  • 1 工艺流程
  • 2 数学模型
  • 3 结果与讨论
  • 4 结论
  • 符号说明
  • 参考文献