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Chemical - Looping with oxygen uncoupling using Mn/Mg-based oxygen carriers - Oxygen release and reactivity with methane

机译：化学-使用基于Mn / Mg的氧载体进行氧解偶联的环-氧释放和与甲烷的反应性

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摘要

Chemical-looping combustion with oxygen uncoupling (CLOU) is a method for combustion of solid and gaseous fossil fuels, which enables easy separation of carbon dioxide from the gaseous product mixture. In contrast to the related chemical-looping combustion (CLC) technology where gaseous or gasified fuels react directly with oxygen carriers, CLOU processes require oxygen carrier materials to be able to release oxygen in the fuel reactor and to regenerate by re-oxidation in oxygen-rich atmosphere in the air reactor at elevated temperature. Oxygen uncoupling properties and reactivities for methane combustion of 12 oxygen carrier particles, produced from mixtures of manganese and magnesium oxides with optional addition of titanium dioxide or calcium hydroxide, are investigated in a quartz batch reactor at 810 ℃, 850℃, 900℃ and 950℃. All investigated oxygen carriers have oxygen release characteristics. The addition of calcium hydroxide facilitates oxygen release and combustion of methane, whereas addition of titanium dioxide does not have a pronounced effect on either oxygen uncoupling or reactivity of the oxygen carrier. In general, particles with greater extent of oxygen release have superior methane combustion properties.
机译：带有氧解偶联（CLOU）的化学循环燃烧是燃烧固体和气态化石燃料的一种方法，可轻松从气态产物混合物中分离出二氧化碳。与气态或气化燃料直接与氧气载体反应的相关化学循环燃烧（CLC）技术相比，CLOU工艺要求氧气载体材料能够在燃料反应器中释放氧气并通过氧气中的再氧化而再生，空气反应器中温度升高时气氛浓郁。在810℃，850℃，900℃和950℃的石英间歇反应器中研究了由锰和氧化镁的混合物以及可任选添加的二氧化钛或氢氧化钙产生的12种载氧颗粒的甲烷甲烷的氧解偶联特性和反应性。 ℃。所有研究的氧气载体均具有氧气释放特性。氢氧化钙的加入促进了氧的释放和甲烷的燃烧，而二氧化钛的加入对氧的解偶联或氧载体的反应性没有明显的影响。通常，具有更大程度的氧气释放的颗粒具有优异的甲烷燃烧性能。

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  • 来源
    《Fuel》 |2011年第3期|p.941-950|共10页
  • 作者

    Alexander Shulman; Erik Cleverstam; Tobias Mattisson; Anders Lyngfelt;

  • 作者单位

    Chalmers University of Technology, Department of Chemical and Biological Engineering. Inorganic Environmental Chemistry, 412 96 CSteborg, Sweden;

    Chalmers University of Technology, Department of Chemical and Biological Engineering. Inorganic Environmental Chemistry, 412 96 CSteborg, Sweden;

    Department of Energy and Environment, Chalmers University of Technology, SE-412 96 C6teborg, Sweden;

    Department of Energy and Environment, Chalmers University of Technology, SE-412 96 C6teborg, Sweden;

  • 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

    chemical-looping with oxygen uncoupling; co_2 capture; manganese oxide; methane; oxygen carriers;

    机译：氧解偶联化学环;CO_2捕集;氧化锰;甲烷;氧气载体;
  • 入库时间 2022-08-18 00:52:01

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