...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Fuel >Role of char in NO_X formation during coal combustion at a regenerator temperature of calcium looping process
【24h】

Role of char in NO_X formation during coal combustion at a regenerator temperature of calcium looping process

机译：在钙循环过程的再生温度下，煤燃烧过程中炭在NO_X形成中的作用

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

Coal of three kinds was burned in an oxygen-enriched atmosphere using twolypes of reactor both of which had the same fast fluidized bed for coal combustion. One was a dual-fluidized bed system (dual-FB), simulating Calcium Looping process comprised a fast fluidized bed regenerator and a bubbling bed carbonator. The other was a conventional single circulating fluidized bed combustor (single-CFBC). In both systems, coal combustion in oxygen-enriched atmosphere was carried out under regenerator temperature condition of Calcium Looping process. Inert quartz sand was used as the bed material to evaluate carbon consumption in the carbonator of dual-FB. Formation of NO_X in the fast fluidized beds was measured for both reactors. For dual-FB, formation of CO and CO_2 in the carbonator was also measured. High-volatile matter coal was found to be favorable to reduce CO and CO_2 formation in the carbonator, but conversion of the fuel-N to NO_X of high-volatile matter coal was higher than that from low-volatile coal. The emissions of NO_X from single-CFBC were less than those from the regenerator of dual-FB under the same combustion condition. From the emissions of CO and CO_2 from the carbonator, the decrease in char combustion in the regenerator of dual-FB was calculated. An empirical relationship between the conversion of fuel-N to NO_X in the fast fluidized bed and the ratio of fixed carbon to volatile matter of the fuel was obtained.
机译：使用两层反应器在富氧气氛中燃烧三种煤，这两种反应器都具有用于煤燃烧的相同快速流化床。一种是双流化床系统（dual-FB），用于模拟钙循环过程，该过程包括快速流化床再生器和鼓泡床碳化器。另一个是常规的单循环流化床燃烧器（单CFBC）。在这两个系统中，都是在钙循环过程的再生器温度条件下，在富氧气氛中进行煤燃烧。惰性石英砂被用作床层材料，以评估双FB碳酸化​​器中的碳消耗。测量了两个反应器在快速流化床中NO_X的形成。对于双FB，还测量了碳酸化器中CO和CO_2的形成。已发现高挥发分煤有利于减少碳酸化器中的CO和CO_2的形成，但燃料N转化为高挥发分煤的NO_X高于低挥发分煤。在相同的燃烧条件下，单CFBC的NO_X排放量小于双FB的再生器。根据碳酸化器的CO和CO_2排放量，计算出双FB再生器中焦炭燃烧的减少量。获得了快速流化床中燃料-N向NO_X的转化率与燃料中固定碳与挥发性物质之比之间的经验关系。

著录项

  • 来源
    《Fuel》 |2014年第4期|319-326|共8页
  • 作者

    Caiyun Gao; Takanori Higuchi; Ayato Yoshizawa; Tadaaki Shimizu; Heejoon Kim; Liuyun Li;

  • 作者单位

    Graduate School of Science and Technology, Niigata University, Japan;

    Graduate School of Science and Technology, Niigata University, Japan;

    Graduate School of Science and Technology, Niigata University, Japan;

    Department of Chemistry and Chemical Engineering, Niigata University, 2-8050 Ikarashi, Niigata 950-2181, Japan;

    Department of Chemistry and Chemical Engineering, Niigata University, Japan;

    Department of Chemistry and Chemical Engineering, Niigata University, Japan;

  • 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

    Fluidized bed; Solid circulation; Nitric oxide; Carbon monoxide; Carbon dioxide;

    机译：流化床固体循环;一氧化氮;一氧化碳;二氧化碳;

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