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Simulation and optimization of DMC synthesis process based on conventional and advanced exergy analyses

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  • Zhao, Qingyue
  • Li, Haiyong
  • Wang, Hongxing

Abstract

Dimethyl carbonate has received more and more attentions as an organic solvent in electrolytes. Aiming at the problem of high energy consumption in the process of dimethyl carbonate (DMC) production, the root of the problem was analyzed by using exergy analysis, which provides a theoretical basis for the construction of energy-saving process. Firstly, the overall process of DMC production was constructed, including propylene carbonate (PC) synthesis, DMC synthesis, azeotrope separation and propylene glycol (PG) purification processes. Secondly, the conventional and advanced exergy analyses of the four proposed processes were carried out. The distributions of exergy and exergy destruction were obtained through conventional exergy analysis. The exergy destructions were further divided through advanced exergy analysis, and the avoidable parts were focused on. Based on the above analyses, the corresponding heat integration processes were proposed. Finally, the conventional processes and the heat integration processes were evaluated with the performance indicators of the exergy destruction, total annual cost (TAC), total energy consumption (TEC) and CO2 emissions.

Suggested Citation

  • Zhao, Qingyue & Li, Haiyong & Wang, Hongxing, 2024. "Simulation and optimization of DMC synthesis process based on conventional and advanced exergy analyses," Energy, Elsevier, vol. 311(C).
    • Handle: RePEc:eee:energy:v:311:y:2024:i:c:s0360544224032067
    DOI: 10.1016/j.energy.2024.133430
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    References listed on IDEAS

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