...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Energy & fuels >Analysis of Reactivity of a CuO-Based Oxygen Carrier for Chemical Looping Combustion of Coal
【24h】

Analysis of Reactivity of a CuO-Based Oxygen Carrier for Chemical Looping Combustion of Coal

机译：CuO基氧气载体在煤化学循环燃烧中的反应性分析

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Chemical looping combustion (CLC) of coal was conducted with 12 CuO-based oxygen carriers supported on SiO_2, Al_2O_3, TiO_2, and ZrO_2 prepared by mechanical muring. The influence of an inert support and the effect of particle size on the reactivity of CuO-based oxygen carrier particles were studied. Five mixed oxide oxygen carriers composed of different amounts of CuO and Fe_2O_3 on TiO_2 were prepared to study the synergistic effect between two active metallic oxides. It was found that CuO-based oxygen carriers showed high reactivity in redox reactions. The onset temperature of the reduction reaction decreased when TiO_2 was added as an inert support. The particles of CuXTi9S0 showed the highest reactivity to convert the coaL Although the smaller particle size of the oxygen carrier can enhance the coal conversion, it also makes it more difficult in the separation of the oxygen carrier from fly ash and unbumed carbon. For mixed oxygen carriers, the synergistic effect between different active oxides was observed. From a reactivity and an energy-balance perspective, particles of CuO-Fe_2O_3/TiO_2 mixed oxide oxygen carriers are suitable for use in CLC of coaL The X-ray diffractometer (XRD) and scanning electron microscope (SEM) were used for the characterization of the fresh and used oxygen carriers. Results support that direct CLC of coal is promising when CuO-based oxygen carriers are used at low temperatures.
机译：采用机械研磨法制备的SiO_2，Al_2O_3，TiO_2和ZrO_2负载的12种CuO基氧载体对煤进行化学循环燃烧（CLC）。研究了惰性载体的影响以及粒径对CuO基氧载体颗粒反应性的影响。制备了五种由不同量的CuO和Fe_2O_3组成的混合氧化物氧载体在TiO_2上，以研究两种活性金属氧化物之间的协同作用。发现基于CuO的氧载体在氧化还原反应中显示出高反应性。当加入TiO_2作为惰性载体时，还原反应的起始温度降低。 CuXTi9S0的颗粒显示出最高的转化coaL的反应性。尽管较小的氧载体粒径可以提高煤的转化率，但也使氧载体与粉煤灰和未燃烧的碳的分离更加困难。对于混合的氧载体，观察到不同活性氧化物之间的协同作用。从反应性和能量平衡的角度来看，CuO-Fe_2O_3 / TiO_2混合氧化物氧载体的颗粒适用于CoaL的CLC。X射线衍射仪（XRD）和扫描电子显微镜（SEM）用于表征新鲜和用过的氧气载体。结果表明，当在低温下使用基于CuO的氧气载体时，直接进行煤的CLC很有前景。

著录项

  • 来源
    《Energy & fuels》 |2012年第mayajuna期|p.3275-3283|共9页
  • 作者

    Shuzhong Wang; Ming Luo; Guoxian Wang; Longfei Wang; Mingming Lv;

  • 作者单位

    School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China;

    School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China;

    School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China;

    School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China;

    School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China;

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

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号