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›› 2010, Vol. 10 ›› Issue (2): 327-331.

• 系统与集成 • 上一篇    下一篇

热集成变压精馏分离水-异丙醇-二异丙胺的工艺模拟

杨德明 高晓新   

  1. 江苏工业学院化学化工学院 江苏工业学院化学化工学院
  • 收稿日期:2009-11-19 修回日期:2010-01-08 出版日期:2010-04-20 发布日期:2010-04-20
  • 通讯作者: 杨德明

Simulation for Separation of Water-Isopropanol-Diiospropylamine by Heat Integration Pressure Swing Distillation

YANG De-ming GAO Xiao-xin   

  1. College of Chemistry and Chemical Engineering, JiangSu Polytechnic University College of Chemistry and Chemical Engineering, JiangSu Polytechnic University
  • Received:2009-11-19 Revised:2010-01-08 Online:2010-04-20 Published:2010-04-20
  • Contact: YANG De-ming

摘要: 在分析水-异丙醇-二异丙胺体系共沸特性的基础上,提出了热集成变压精馏工艺. 采用UNIQUAC-RK方程计算气液相平衡数据,并利用实验数据在模拟压力范围内(0.004~1.0 MPa)对UNIQUAC方程中的二元交互作用参数进行修正. 利用ASPEN PLUS过程模拟软件中的RADFRAC严格精馏模型,对提出的热集成变压精馏工艺进行过程模拟与参数优化. 得到了热集成变压精馏分离水-异丙醇-二异丙胺体系的最佳工艺参数、塔内气液浓度分布及精馏塔设备参数等,并通过实验对模拟结果进行验证. 结果表明,热集成变压精馏工艺比常规的变压精馏工艺约节能34.3%.

关键词: 水-异丙醇-二异丙胺系, 共沸组成, 热集成变压精馏, 流程模拟, 节能

Abstract: Heat integration pressure swing distillation (HIPSD) for separation of water-isopropanol-diiospropylamine was investigated based on the dependency of the azeotropic composition on the system pressure is sensitive. The UNIQUAC-RK equation was used for calculating vapor-liquid equilibrium data of water-isopropanol-diiospropylamine system, and the binary interaction parameters of UNIQUAC equation were corrected against the experimental data in the range of 0.004~1.0 MPa. Simulations of HIPSD were performed by ASPEN PLUS software with RADFRAC module, and the optimum conditions, composition profiles of vapors and liquids in column including column parameters were determined. The simulation results show that HIPSD can save energy by 34.3% compared with PSD.

Key words: water-isopropanol-diiospropylamine system, azeotropic composition, heat integration pressure swing distillation, process simulation, energy saving

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