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The evaluation of a methane autothermal chemical looping reforming experiment based on exergy analysis

机译：基于Deerteny分析的甲烷自热化学循环重整实验评价

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摘要

Compared with a double circulation fluidized bed, an internally circulating reactor (ICR) has a wider pressure range, thereby increasing the conversion efficiency of methane and reducing the cost. However, since the ICR is a new reactor, there is a lack of detailed analysis and research on the internal processes inside the reactor. Consequently, in this paper, a detailed exergy analysis and an advanced exergetic analysis are utilized to evaluate a methane autothermal chemical looping reforming experiment carried out on an ICR. A detailed analysis of the internal exergy destruction of the ICR is carried out by establishing a mathematical model for the enthalpy and exergy of the substance. The exergy destruction inside reactors is divided into the exergy destruction in the chemical reaction process, the destruction of thermal exergy and other flowing exergy destruction. The influences of the CH4/NiO molar ratio and addition of steam or not on exergy destruction are studied. With the increase of CH4/NiO molar ratio, the chemical looping reforming process gradually supersedes the chemical looping combustion process and becomes the dominating reaction, which exerts a strong beneficial influence on the reduction of exergy destruction of chemical reactions. When the CH4/NiO molar ratio is 0.60, the exergy efficiency of the product is up to 52.17%. The advanced exergetic analysis provides a direction for improving the experiment. Based on these results, the ICR is evaluated in all aspects, including comparative evaluation, existing limitations, and possible future work.
机译：与双循环流化床相比，内循环反应器（ICR）具有较宽的压力范围，从而提高甲烷的转化效率并降低成本。然而，由于ICR是一个新的反应堆，因此对反应器内的内部过程缺乏详细分析和研究。因此，在本文中，利用详细的漏洞分析和先进的前进分析来评估在ICR上进行的甲烷自热化学循环重整实验。通过建立焓和物质漏洞的数学模型来进行ICR内部漏洞破坏的详细分析。反应器内的暴力破坏分为化学反应过程中的漏洞破坏，摧毁了热驱动和其他流动的暴力破坏。研究了CH4 / NiO摩尔比的影响和添加蒸汽或不在漏胀破坏上。随着CH4 / NIO摩尔比的增加，化学环循环重整过程逐渐取代了化学循环燃烧过程，成为主导反应，这对减少化学反应的降低造成了强烈的有益影响。当CH4 / NIO摩尔比为0.60时，该产品的高达效率高达52.17％。先进的前进分析提供了改进实验的方向。根据这些结果，ICR在各个方面进行评估，包括比较评估，现有限制以及可能的未来工作。

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  • 来源
    《RSC Advances》 |2019年第38期|共13页
  • 作者

    Zhang Fan; Zhu Lin; Rao Dong;

  • 作者单位

    Southwest Petr Univ Key Lab Gas Proc Engn Sch Chem &

    Chem Engn Chengdu 610500 Sichuan Peoples R China;

    Southwest Petr Univ Key Lab Gas Proc Engn Sch Chem &

    Chem Engn Chengdu 610500 Sichuan Peoples R China;

    Southwest Petr Univ Key Lab Gas Proc Engn Sch Chem &

    Chem Engn Chengdu 610500 Sichuan Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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