石油炼制与化工 ›› 2012, Vol. 43 ›› Issue (4): 74-79.

• 控制与优化 • 上一篇    下一篇

N-甲酰基吗啉芳烃萃取精馏工艺的模拟及优化

曲宏亮1,王俊2,刘艳升2,胡玉峰2   

  1. 1. 中国石化北京燕山分公司化工七厂
    2. 中国石油大学(北京)化学工程学院
  • 收稿日期:2011-08-29 修回日期:2011-11-10 出版日期:2012-04-12 发布日期:2012-03-29
  • 通讯作者: 刘艳升 E-mail:wsuper@cup.edu.cn

PROCESS SIMULATION AND OPTIMIZATION OF AROMATIC EXTRACTION DISTILLATION WITH N-FORMYLMORPHOLINE

  • Received:2011-08-29 Revised:2011-11-10 Online:2012-04-12 Published:2012-03-29

摘要: 以文献中的相平衡数据为基础,利用Aspen Plus 软件,建立N-甲酰基吗啉(NFM)芳烃萃取精馏工艺模型。模拟结果表明:该模型可以较好地反映装置的实际操作状况。考察剂油比、贫溶剂进料温度以及贫溶剂中苯含量等参数对分离过程的影响,获得N-甲酰基吗啉芳烃萃取精馏工艺的最佳操作参数为:剂油质量比4.66,贫溶剂进料温度112 ℃,贫溶剂中苯质量分数在1%左右。优化工况的模拟计算结果表明,优化后苯收率和苯纯度明显提高,其中苯收率提高0.6百分点,苯纯度提高0.06百分点。

关键词: 萃取精馏, N-甲酰基吗琳, 芳烃, 优化

Abstract: Using Aspen Plus software, a process model of separating aromatics from non-aromatics by extractive distillation with N-formylmorpholine (NFM) is set up based on vapor-liquid equilibrium data of NFM and hydrocarbons system. Simulation results show that the calculations agree well with the actual operation data. The effect of solvent/oil ratio, inlet temperature of lean solvent and benzene content in lean solvent on the separation is investigated. Optimum operation parameters are obtained as follows: solvent/oil mass ratio of 4.66, lean solvent inlet temperature of 112 ℃ and mass fraction of benzene in lean solvent of about 1%. Calculations under optimization conditions show that the yield and purity of benzene enhance significantly, they increase 0.6 and 0.06 percentage points, respectively.

Key words: extractive distillation, N-formylmorpholine, aromatic hydrocarbon, optimization

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