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Thermodynamic evaluation of chemical looping combustion for combined cooling heating and power production driven by coal

机译：煤驱动的冷热电联产化学循环燃烧的热力学评估

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摘要

This study carries out an investigation concerning on the benefits of ex-situ coal gasification chemical looping combustion integrated with combined cooling, heating and power generation (CCHP-CLC) by means of thermodynamic evaluation. The coal gasification syngas is introduced into chemical looping combustion for inherent separation of CO2 without extra energy consumed. The combustion flue gases from both air reactor and fuel reactor are sequentially fed into gas turbines for electricity production, a heat recovery vapor generator unit for further electricity generation with driving a LiBr-H2O absorption chiller for cooling production in summer and finally a heat exchanger for daily heat water production. A preliminary parameter analysis helps to obtain the optimum operating condition, as steam-to-coal ratio (S/C) of 0.05, oxygen-to-coal ratio (O/C) of 0.75, and operating pressure of chemical looping combustion process of 5 bar. The overall energy efficiency of the CCHP-CLC process is calculated equal to 58.20% in summer compared with that of 60.34% in winter. Importantly, by utilization of such process, the reduction potential of fossil fuel (coal) consumption has been demonstrated to be 2336% in summer and 27.20% in winter. (C) 2016 Published by Elsevier Ltd.
机译：这项研究通过热力学评估，研究了结合了冷却，加热和发电的异地煤气化化学回路燃烧的好处。将煤气化的合成气引入化学循环燃烧中，以固有地分离CO2，而不会消耗额外的能量。来自空气反应堆和燃料反应堆的燃烧烟气依次供入燃气轮机中进行发电，并通过驱动LiBr-H2O吸收式冷水机以进一步发电的热量回收蒸汽发生器单元，以在夏季冷却生产，最后为热交换器供热。每天生产热水。初步的参数分析有助于获得最佳的运行条件，蒸汽/煤比（S / C）为0.05，氧/煤比（O / C）为0.75，以及化学循环燃烧过程的运行压力为5巴。计算得出，CCHP-CLC工艺的总体能源效率在夏季等于58.20％，而在冬季则为60.34％。重要的是，通过利用这种方法，已证明化石燃料（煤）消耗的减少潜力在夏季为2336％，在冬季为27.20％。 （C）2016由Elsevier Ltd.出版

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  • 来源
    《Energy Conversion & Management》 |2017年第3期|200-211|共12页
  • 作者

    Fan Junming; Hong Hui; Zhu Lin; Wang Zefeng; Jin Hongguang;

  • 作者单位

    Chinese Acad Sci, Inst Engn Thermophys, Beijing 100190, Peoples R China|Univ Chinese Acad Sci, Beijing 100049, Peoples R China;

    Chinese Acad Sci, Inst Engn Thermophys, Beijing 100190, Peoples R China;

    Southwest Petr Univ, Sch Chem & Chem Engn, Key Lab Gas Proc Engn, Chengdu 610500, Peoples R China;

    Chinese Acad Sci, Inst Engn Thermophys, Beijing 100190, Peoples R China|Univ Chinese Acad Sci, Beijing 100049, Peoples R China;

    Chinese Acad Sci, Inst Engn Thermophys, Beijing 100190, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    CCHP; Thermodynamic assessment; Chemical looping combustion; Coal;

    机译：CCHP;热力学评估;化学循环燃烧;煤;

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