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Chemical Looping Combustion of gaseous and solid fuels with manganese- iron mixed oxide as oxygen carrier

机译：以锰铁混合氧化物为氧载体的气态和固态燃料的化学循环燃烧

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摘要

Synthetic manganese-iron mixed oxides are considered promising materials to be used as oxygen carriers for Chemical Looping Combustion of coal with carbon dioxide capture at low cost. The aim of this work was to evaluate a manganese-iron mixed oxide material with a manganese to iron molar ratio of 0.77:0.23 as oxygen carrier for coal combustion by means of chemical looping processes, including both ex-situ and in-situ gasification of coal. The preparation method-spray drying followed by calcination was optimized in order to produce particles with high reactivity and mechanical strength. The material was studied in two continuously operated facilities designed to burn either gaseous or solid fuels. While full combustion was achieved burning syngas, showing the feasibility of the use of this material considering the ex-situ gasification process. Coal combustion efficiency by in-situ gasification process was improved in comparison with other previously tested low-cost materials such as ilmenite and iron ore. Moreover, the oxygen carrier particles showed an interesting magnetic behavior that was able to facilitate oxygen carrier recovery from the purge ash stream. In view of these results, the manganese-iron mixed oxide as oxygen carrier is proposed as a promising candidate for use coal combustion by the chemical looping process.
机译：合成的锰铁混合氧化物被认为是有前途的材料，可以用作氧气的载体，以低成本低成本捕集二氧化碳的煤进行化学循环燃烧。这项工作的目的是通过化学循环过程，包括对煤的原位和原位气化，评估锰铁比为0.77：0.23的锰-铁混合氧化物材料作为煤燃烧的氧气载体。煤。为了制备具有高反应性和机械强度的颗粒，对制备方法进行了优化，先进行喷雾干燥，然后进行煅烧。在用于燃烧气态或固态燃料的两个连续运行的设施中研究了这种材料。虽然实现了完全燃烧，燃烧合成气，但考虑到异位气化过程，显示了使用这种材料的可行性。与其他先前测试过的低成本材料（如钛铁矿和铁矿石）相比，通过原位气化工艺提高了煤的燃烧效率。此外，氧载体颗粒表现出令人感兴趣的磁性，该磁性行为能够促进从吹扫灰分流中回收氧载体。鉴于这些结果，提出了将锰-铁混合氧化物作为氧载体作为通过化学循环过程使用煤燃烧的有希望的候选者。

著录项

  • 来源
    《Energy Conversion & Management》 |2018年第3期|221-231|共11页
  • 作者

    Perez-Vega Raul; Abad Alberto; Garcia-Labiano Francisco; Gayan Pilar; de Diego Luis F.; Teresa Izquierdo Maria; Adanez Juan;

  • 作者单位

    CSIC, Inst Carboquim, Dept Energy & Environm, ICB, Miguel Luesma Castan 4, Zaragoza 50018, Spain;

    CSIC, Inst Carboquim, Dept Energy & Environm, ICB, Miguel Luesma Castan 4, Zaragoza 50018, Spain;

    CSIC, Inst Carboquim, Dept Energy & Environm, ICB, Miguel Luesma Castan 4, Zaragoza 50018, Spain;

    CSIC, Inst Carboquim, Dept Energy & Environm, ICB, Miguel Luesma Castan 4, Zaragoza 50018, Spain;

    CSIC, Inst Carboquim, Dept Energy & Environm, ICB, Miguel Luesma Castan 4, Zaragoza 50018, Spain;

    CSIC, Inst Carboquim, Dept Energy & Environm, ICB, Miguel Luesma Castan 4, Zaragoza 50018, Spain;

    CSIC, Inst Carboquim, Dept Energy & Environm, ICB, Miguel Luesma Castan 4, Zaragoza 50018, Spain;

  • 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

    CO2 capture; Chemical Looping Combustion; Oxygen carriers; Manganese-iron mixed oxide; Coal;

    机译：二氧化碳捕集;化学循环燃烧;氧气载体;锰铁混合氧化物;煤;

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