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Energy savings by co-production: A methanol/electricity case study

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  • Liu, Guang-jian
  • Li, Zheng
  • Wang, Ming-hua
  • Ni, Wei-dou
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    Abstract

    The overall exergy losses of co-production systems were decomposed into five sub-systems: chemical reaction processes, heat exchange processes, external exergy losses, turbine/mechanical exergy losses and others. By defining new parameters called energy-saving factors, we quantitatively describe the contribution of these processes to the overall energy savings relative to separate production systems. A methanol/electricity co-production system is taken as case study, results show that heat exchange processes are the main contribution to the energy savings.

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    Bibliographic Info

    Article provided by Elsevier in its journal Applied Energy.

    Volume (Year): 87 (2010)
    Issue (Month): 9 (September)
    Pages: 2854-2859

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    Handle: RePEc:eee:appene:v:87:y:2010:i:9:p:2854-2859

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    Keywords: Co-production system Coal gasification Exergy analysis Energy-saving factor;

    References

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    1. Prins, M.J. & Ptasinski, K.J., 2005. "Energy and exergy analyses of the oxidation and gasification of carbon," Energy, Elsevier, vol. 30(7), pages 982-1002.
    2. Hetland, Jens & Zheng, Li & Shisen, Xu, 2009. "How polygeneration schemes may develop under an advanced clean fossil fuel strategy under a joint sino-European initiative," Applied Energy, Elsevier, vol. 86(2), pages 219-229, February.
    3. Wang, Zhifang & Zheng, Danxing & Jin, Hongguang, 2009. "Energy integration of acetylene and power polygeneration by flowrate-exergy diagram," Applied Energy, Elsevier, vol. 86(3), pages 372-379, March.
    4. Yamashita, Kei & Barreto, Leonardo, 2005. "Energyplexes for the 21st century: Coal gasification for co-producing hydrogen, electricity and liquid fuels," Energy, Elsevier, vol. 30(13), pages 2453-2473.
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    Cited by:
    1. Xiang, Dong & Qian, Yu & Man, Yi & Yang, Siyu, 2014. "Techno-economic analysis of the coal-to-olefins process in comparison with the oil-to-olefins process," Applied Energy, Elsevier, vol. 113(C), pages 639-647.
    2. Guo, Zhihang & Wang, Qinhui & Fang, Mengxiang & Luo, Zhongyang & Cen, Kefa, 2014. "Thermodynamic and economic analysis of polygeneration system integrating atmospheric pressure coal pyrolysis technology with circulating fluidized bed power plant," Applied Energy, Elsevier, vol. 113(C), pages 1301-1314.
    3. James, Olusola O. & Chowdhury, Biswajit & Auroux, Aline & Maity, Sudip, 2013. "Low CO2 selective iron based Fischer–Tropsch catalysts for coal based polygeneration," Applied Energy, Elsevier, vol. 107(C), pages 377-383.
    4. Janesh Sami, 2011. "Multivariate Cointegration and Causality between Exports, Electricity Consumption and Real Income per Capita: Recent Evidence from Japan," International Journal of Energy Economics and Policy, Econjournals, vol. 1(3), pages 59-68, November.
    5. Su, Li-Wang & Li, Xiang-Rong & Sun, Zuo-Yu, 2013. "The consumption, production and transportation of methanol in China: A review," Energy Policy, Elsevier, vol. 63(C), pages 130-138.

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