Optimal Design and Effective Control of TAME Production Process using Integrated Reactive Dividing Wall and Pressure Swing Columns

Ao Yang, Liping Lv, Weifeng Shen, Lichun Dong, Jie Li, Xin Xiao

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    Abstract

    Design of 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 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 TAME production process through integrated reactive dividing wall and pressure swing columns, which includes screening of best dividing wall configuration, thermodynamic feasible insight, and process simulation and optimization using sensitivity analysis tool in Aspen Plus. The computational results demonstrate the optimal design of TAME production process through integrated reactive dividing wall and pressure swing columns 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.
    Original languageEnglish
    Pages (from-to)14565–14581
    JournalIndustrial and Engineering Chemistry Research
    Volume0
    Early online date17 Nov 2017
    DOIs
    Publication statusPublished - 13 Dec 2017

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