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Energy Saving Research on Multi-effect Evaporation Crystallization Process of Bittern Based on MVR and TVR Heat Pump Technology

Received: 22 April 2020     Accepted: 4 June 2020     Published: 17 June 2020
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Abstract

This work keeps an eye on the energy saving research on evaporation crystallization process of bittern. Based on the thermo sensitivity of solubility of various salts in bittern, the magnesium salts are purified. The conventional evaporation crystallization process used to separate the bittern demands high energy consumption and has low thermodynamic efficiency. Therefore, the multi-effect evaporation (MEE), thermal vapor recompression (TVR) heat pump and mechanical vapor recompression (MVR) heat pump technology were applied to the conventional evaporation crystallization process. The MVR and TVR technology can both make full use of the secondary steam heating materials that will save energy. In addition, Aspen Plus (Version 7.3) was used to simulate the processes of the electrolyte-containing system under the ELECNTRAL thermodynamic model. For the better evaluation of various evaporation crystallization processes, some important evaluation indexes, such as energy consumption, annual total cost (ATC) and exergy loss were chosen as objective functions. Compared with the double-effect evaporation crystallization process coupled with TVR heat pump technology, the results indicated that the double-effect evaporation crystallization process coupled with MVR heat pump technology can save energy consumption and ATC by 80.52% and 15.32% respectively. Furthermore, the MVR heat pump technology takes the lowest effective energy loss, which is a more competitive factor of evaporation crystallization process of bittern.

Published in American Journal of Chemical Engineering (Volume 8, Issue 3)
DOI 10.11648/j.ajche.20200803.11
Page(s) 54-62
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2020. Published by Science Publishing Group

Keywords

Bittern, Evaporation Crystallization, MVR Heat Pump, TVR Heat Pump, MEE, ATC, Energy Saving

References
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Cite This Article
  • APA Style

    Deming Yang, Bingqin Leng, Tao Li, Ming Li. (2020). Energy Saving Research on Multi-effect Evaporation Crystallization Process of Bittern Based on MVR and TVR Heat Pump Technology. American Journal of Chemical Engineering, 8(3), 54-62. https://doi.org/10.11648/j.ajche.20200803.11

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    ACS Style

    Deming Yang; Bingqin Leng; Tao Li; Ming Li. Energy Saving Research on Multi-effect Evaporation Crystallization Process of Bittern Based on MVR and TVR Heat Pump Technology. Am. J. Chem. Eng. 2020, 8(3), 54-62. doi: 10.11648/j.ajche.20200803.11

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    AMA Style

    Deming Yang, Bingqin Leng, Tao Li, Ming Li. Energy Saving Research on Multi-effect Evaporation Crystallization Process of Bittern Based on MVR and TVR Heat Pump Technology. Am J Chem Eng. 2020;8(3):54-62. doi: 10.11648/j.ajche.20200803.11

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  • @article{10.11648/j.ajche.20200803.11,
      author = {Deming Yang and Bingqin Leng and Tao Li and Ming Li},
      title = {Energy Saving Research on Multi-effect Evaporation Crystallization Process of Bittern Based on MVR and TVR Heat Pump Technology},
      journal = {American Journal of Chemical Engineering},
      volume = {8},
      number = {3},
      pages = {54-62},
      doi = {10.11648/j.ajche.20200803.11},
      url = {https://doi.org/10.11648/j.ajche.20200803.11},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajche.20200803.11},
      abstract = {This work keeps an eye on the energy saving research on evaporation crystallization process of bittern. Based on the thermo sensitivity of solubility of various salts in bittern, the magnesium salts are purified. The conventional evaporation crystallization process used to separate the bittern demands high energy consumption and has low thermodynamic efficiency. Therefore, the multi-effect evaporation (MEE), thermal vapor recompression (TVR) heat pump and mechanical vapor recompression (MVR) heat pump technology were applied to the conventional evaporation crystallization process. The MVR and TVR technology can both make full use of the secondary steam heating materials that will save energy. In addition, Aspen Plus (Version 7.3) was used to simulate the processes of the electrolyte-containing system under the ELECNTRAL thermodynamic model. For the better evaluation of various evaporation crystallization processes, some important evaluation indexes, such as energy consumption, annual total cost (ATC) and exergy loss were chosen as objective functions. Compared with the double-effect evaporation crystallization process coupled with TVR heat pump technology, the results indicated that the double-effect evaporation crystallization process coupled with MVR heat pump technology can save energy consumption and ATC by 80.52% and 15.32% respectively. Furthermore, the MVR heat pump technology takes the lowest effective energy loss, which is a more competitive factor of evaporation crystallization process of bittern.},
     year = {2020}
    }
    

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  • TY  - JOUR
    T1  - Energy Saving Research on Multi-effect Evaporation Crystallization Process of Bittern Based on MVR and TVR Heat Pump Technology
    AU  - Deming Yang
    AU  - Bingqin Leng
    AU  - Tao Li
    AU  - Ming Li
    Y1  - 2020/06/17
    PY  - 2020
    N1  - https://doi.org/10.11648/j.ajche.20200803.11
    DO  - 10.11648/j.ajche.20200803.11
    T2  - American Journal of Chemical Engineering
    JF  - American Journal of Chemical Engineering
    JO  - American Journal of Chemical Engineering
    SP  - 54
    EP  - 62
    PB  - Science Publishing Group
    SN  - 2330-8613
    UR  - https://doi.org/10.11648/j.ajche.20200803.11
    AB  - This work keeps an eye on the energy saving research on evaporation crystallization process of bittern. Based on the thermo sensitivity of solubility of various salts in bittern, the magnesium salts are purified. The conventional evaporation crystallization process used to separate the bittern demands high energy consumption and has low thermodynamic efficiency. Therefore, the multi-effect evaporation (MEE), thermal vapor recompression (TVR) heat pump and mechanical vapor recompression (MVR) heat pump technology were applied to the conventional evaporation crystallization process. The MVR and TVR technology can both make full use of the secondary steam heating materials that will save energy. In addition, Aspen Plus (Version 7.3) was used to simulate the processes of the electrolyte-containing system under the ELECNTRAL thermodynamic model. For the better evaluation of various evaporation crystallization processes, some important evaluation indexes, such as energy consumption, annual total cost (ATC) and exergy loss were chosen as objective functions. Compared with the double-effect evaporation crystallization process coupled with TVR heat pump technology, the results indicated that the double-effect evaporation crystallization process coupled with MVR heat pump technology can save energy consumption and ATC by 80.52% and 15.32% respectively. Furthermore, the MVR heat pump technology takes the lowest effective energy loss, which is a more competitive factor of evaporation crystallization process of bittern.
    VL  - 8
    IS  - 3
    ER  - 

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Author Information
  • College of Petrochemical Engineering, Changzhou University, Changzhou, China

  • College of Petrochemical Engineering, Changzhou University, Changzhou, China

  • College of Petrochemical Engineering, Changzhou University, Changzhou, China

  • College of Petrochemical Engineering, Changzhou University, Changzhou, China

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