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首页> 外文期刊>Clean air >COMPARISON OF THE PERFORMANCE OF IRON ORE AND SYNTHETIC IRON-BASED OXYGEN CARRIER FOR CHEMICAL LOOPING COMBUSTION OF COAL
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COMPARISON OF THE PERFORMANCE OF IRON ORE AND SYNTHETIC IRON-BASED OXYGEN CARRIER FOR CHEMICAL LOOPING COMBUSTION OF COAL

机译：铁矿石与合成铁基氧气载体的化学循环燃烧性能的比较

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摘要

Chemical-looping combustion (CLC) is a new technology for the efficient conversion of fuels with inherent separation of carbon dioxide. Direct CLC of coal has recently attracted the attention of researchers, but no work has been done using the YiMin coal with high reserves with a local natural material being used as an oxygen carrier. In the present paper, experiments on coal direct CLC was carried out in a batch fluidized bed using the YiMin coal and two kinds of materials, i.e., synthetic Fe _( 2 ) O _( 3 ) /MgAl _( 2 ) O _( 4 ) and natural iron ore as oxygen carriers. The performance of these two materials was compared and investigated. It was found that the reactivity of iron ore was comparable to that of Fe _( 2 ) O _( 3 ) /MgAl _( 2 ) O _( 4 ) . The carbon conversion when using iron ore (93.2%) as an oxygen carrier was similar to that when synthetic Fe _( 2 ) O _( 3 ) /MgAl _( 2 ) O _( 4 ) (93.8%) was used. An increase in the temperature of the reactor produced a higher relative concentration of CO _( 2 ) , while the relative concentrations of combustible gases decreased when iron ore was used as an oxygen carrier. The high stability of the two materials was confirmed during 10 cyclic operation processes at 950°C. Only minor changes appeared in the surface morphology of the samples after redox reactions, but no severe surface sintering was observed. The interactions between two oxygen carriers and ash were detected, and it was found that the coal ash had no significant effect on those two materials after redox processes. Therefore, the preliminary experiments and data analyses prove that it is suitable for direct CLC of YiMin coal with local natural iron ore as an oxygen carrier.
机译：化学循环燃烧（CLC）是一种新技术，用于燃料的有效转化具有固有分离二氧化碳。煤炭直接CLC最近引起了研究人员的注意，但没有使用Yimin煤与高储量的工作，局部天然材料用作氧气载体。在本文中，使用中林煤和两种材料，即合成Fe _（2）o _（3）/ mgal _（2）O _（ 4）和天然铁矿作为氧载体。比较和研究了这两种材料的性能。发现铁矿石的反应性与Fe _（2）o _（3）/ mgAl _（2）O o _（4）的反应性相当。使用铁矿石（93.2％）作为氧载体的碳转化类似于合成Fe _（2）o _（3）/ mgAl _（2）O o _（4）o _（4）（93.8％）时。反应器的温度的增加产生了CO _（2）的相对浓度，而当铁矿石用作氧载体时，可燃气体的相对浓度降低。在950℃的10个环状操作过程中确认了两种材料的高稳定性。在氧化还原反应后样品的表面形貌中仅出现微小的变​​化，但观察到没有严重的表面烧结。检测到两个氧载体和灰之间的相互作用，发现煤灰在氧化还原过程后对这两种材料没有显着影响。因此，初步实验和数据分析证明，它适用于伊米林煤的直接Clc与局部天然铁矿作为氧载体。

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  • 来源
    《Clean air》 |2018年第4期|157-174|共18页
  • 作者

    Ming Luo; Yang Yi; Jianjun Cai; Ke Liu; Chao Wang; Qian Wang;

  • 作者单位

    School of Energy and Power Engineering Jiangsu University Zhenjiang Jiangshu;

    School of Energy and Power Engineering Jiangsu University Zhenjiang;

    Key Laboratory of Thermo-Fluid Science and Engineering Ministry of Education School of Energy and Power Engineering Xi'an JiaotongUniversity Xi'an;

    State Grid Shandong Electric Power Research Institute Jinan;

    School of Energy and Power Engineering Jiangsu University Zhenjiang;

    School of Energy and Power Engineering Jiangsu University Zhenjiang;

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  • 正文语种 eng
  • 中图分类
  • 关键词

    chemical looping; combustion; carbon capture; coal; iron ore;

    机译：化学环;燃烧;碳捕获;煤;铁矿石;

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