Optimal Design and Effective Control of the tert-Amyl Methyl Ether Production Process Using an Integrated Reactive Dividing Wall and Pressure Swing Columns,Industrial & Engineering Chemistry Research

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Optimal Design and Effective Control of the tert-Amyl Methyl Ether Production Process Using an Integrated Reactive Dividing Wall and Pressure Swing Columns
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2017-12-01 00:00:00 , DOI: 10.1021/acs.iecr.7b03459
Ao Yang ₁ , Liping Lv _{2,

3,

4} , Weifeng Shen ₁ , Lichun Dong ₁ , Jie Li ₅ , Xin Xiao ₆

Affiliation

Design of the tert-amyl methyl ether (TAME) production process has received much attention because TAME is an important oxygenated gasoline additive with much fewer environmental and health issues than methyl tert-butyl ether. Although a reactive dividing wall column where reaction and separation take place in one vessel has been developed with less capital and operating cost, little work on its application to TAME production has been reported. In this paper, we propose a new overall procedure for optimal design of the TAME production process through an integrated reactive dividing wall and pressure swing columns, which includes screening of the best dividing wall configuration, thermodynamic feasible insight, and process simulation and optimization using the sensitivity analysis tool in Aspen Plus. The computational results demonstrate that the optimal design of the TAME production process through an integrated reactive dividing wall and pressure swing column is successfully obtained to achieve desired TAME purity of 99.958 mol %, significantly reducing the total annualized cost by 43.58% and decreasing the exergy loss by 48.24% compared to the existing TAME production process using reactive distillation. Finally, an effective control strategy including tray temperature control is proposed to ensure the operating conditions are well controlled at or close to their set points in a desired time when disturbances occur.

中文翻译：

集成反应性分隔壁和压力摆动塔的叔戊基甲基醚生产工艺的优化设计和有效控制

设计中的叔戊基甲基醚（TAME）生产过程中受到很多关注，因为TAME是一个重要的含氧汽油添加剂比甲基少得多的环境和健康问题叔丁基醚。尽管已经开发了在一个容器中进行反应和分离的反应性分隔壁塔，但其投资和运行成本较低，但据报道，将其用于TAME生产的工作很少。在本文中，我们通过集成的反应性分隔壁和变压塔为TAME生产工艺的优化设计提出了一个新的总体程序，其中包括筛选最佳分隔壁配置，热力学可行性见解以及使用过程模拟和优化的过程。 Aspen Plus中的灵敏度分析工具。计算结果表明，通过集成的反应性分隔壁和变压塔，成功获得了TAME生产工艺的最佳设计，以实现所需的99.958 mol％TAME纯度；与现有的采用反应蒸馏的TAME生产工艺相比，可显着降低年化总成本43.58％，并降低火用损失48.24％。最后，提出了一种有效的控制策略，包括托盘温度控制，以确保在发生干扰时的期望时间内，将操作条件很好地控制在或接近其设定点。

更新日期：2017-12-01

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