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Reducing energy requirements for ETBE synthesis using reactive dividing wall distillation column

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  • Kaur, Jasdeep
  • Sangal, Vikas Kumar

Abstract

Production of ETBE is one of most important industrial processes. It is used both as biofuel and bio additive in gasoline. The motivation behind its use is that, its blend with gasoline reduces greenhouse gas emissions. Present work focuses on the synthesis of ethyl tertiary butyl ether (ETBE) by using Reactive dividing wall column (RDWC) and a comparative assessment with three other process alternatives as-reactor followed by distillation sequence, reactor plus reactive distillation (RD), and RD. The comparison was done in terms of energy requirements, CO2 emissions, total annual costs (TAC), total investment costs (TIC) and total operating costs (TOC). RDWC proved its forte in saving energy therefore cutting CO2 emissions and handling the reactions limited by chemical equilibrium. RDWC was found to be the most promising alternative out of the four process alternatives. It gave highest purity of the product ETBE 99.999% (mol.), the CO2 emissions were reduced by 74% and 43% as compared to conventional sequence and RD respectively, and also the energy requirements were very less as compared to the conventional sequence and RD. TIC reduction as high as 68% was observed, this also established RDWC as a lucrative option for the synthesis of ETBE.

Suggested Citation

  • Kaur, Jasdeep & Sangal, Vikas Kumar, 2017. "Reducing energy requirements for ETBE synthesis using reactive dividing wall distillation column," Energy, Elsevier, vol. 126(C), pages 671-676.
    • Handle: RePEc:eee:energy:v:126:y:2017:i:c:p:671-676
    DOI: 10.1016/j.energy.2017.03.072
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    References listed on IDEAS

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    1. Yee, Kian Fei & Mohamed, Abdul Rahman & Tan, Soon Huat, 2013. "A review on the evolution of ethyl tert-butyl ether (ETBE) and its future prospects," Renewable and Sustainable Energy Reviews, Elsevier, vol. 22(C), pages 604-620.
    2. Rahmat, Norhasyimi & Abdullah, Ahmad Zuhairi & Mohamed, Abdul Rahman, 2010. "Recent progress on innovative and potential technologies for glycerol transformation into fuel additives: A critical review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 14(3), pages 987-1000, April.
    3. Gadalla, M. & Olujić, Ž. & de Rijke, A. & Jansens, P.J., 2006. "Reducing CO2 emissions of internally heat-integrated distillation columns for separation of close boiling mixtures," Energy, Elsevier, vol. 31(13), pages 2409-2417.
    4. Tavan, Yadollah, 2014. "Feasibility and parametric study of tetrahydrofuran dehydration using reactive distillation with low energy requirement," Energy, Elsevier, vol. 76(C), pages 622-628.
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    Cited by:

    1. Yang, Ao & Sun, Shirui & Eslamimanesh, Ali & Wei, Shun'an & Shen, Weifeng, 2019. "Energy-saving investigation for diethyl carbonate synthesis through the reactive dividing wall column combining the vapor recompression heat pump or different pressure thermally coupled technique," Energy, Elsevier, vol. 172(C), pages 320-332.

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    Keywords

    ETBE; RDWC; Energy requirement; CO2 emissions;
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