...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Fuel >Steam gasification behavior during coal combustion and CaO regeneration in O-2/CO2/steam atmosphere
【24h】

Steam gasification behavior during coal combustion and CaO regeneration in O-2/CO2/steam atmosphere

机译：O-2 / CO2 /蒸汽气氛中煤炭燃烧和CaO再生过程中的蒸汽气化行为

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

In this study, limestone was calcined in O-2/CO2/steam atmosphere with heat supplied from coal combustion. Steam was supplied to the calciner to improve CaO reactivity. However, steam gasification behavior during coal combustion in O-2/CO2/steam atmosphere is unclear. This experimental study was conducted to clarify the role of steam in coal combustion using an isotope tracer technique. H-2 O-18 was used to continuously trace the reaction proceeding. In a fuel-rich environment, both CO2 and steam gasification occurred, generating H-2, (CO)-O-16, (CO)-O-18, (CO2)-O-16 and (COO)-O-16-O-18. In an oxygen-rich environment, steam gasification still occurred and generated (COO)-O-16-O-18. The combustion reaction equation should be described as C + H-2 O-18 + O-16(2) = (COO)-O-16-O-18 + H-2 O-16 at high temperature and with high CO2 and steam concentrations. The generation of (COO)-O-16-O-18 highly depends on O-2 concentration in a fuel-rich environment but the O-2 supply has little influence on (COO)-O-16-O-18 formation in an oxygen-rich environment. Moreover, the increase of steam supply accelerated (COO)-O-16-O-18 formation. Steam gasification is generally involved in coal combustion reaction. (CO)-O-18 and H-2 are first locally generated within coal particles through steam gasification and they are reconverted to (COO)-O-16-O-18 and H-2 O-16 through combustion during the boundary layer reactions. (C) 2016 Elsevier Ltd. All rights reserved.
机译：在这项研究中，利用煤燃烧产生的热量在O-2 / CO2 /蒸汽气氛中煅烧石灰石。将蒸汽供应至煅烧炉以改善CaO反应性。但是，尚不清楚在O-2 / CO2 /蒸汽气氛下煤炭燃烧过程中的蒸汽气化行为。进行这项实验研究是为了使用同位素示踪技术阐明蒸汽在燃煤中的作用。使用H-2 O-18连续追踪反应进程。在富含燃料的环境中，CO2和蒸汽均发生气化，生成H-2，（CO）-O-16，（CO）-O-18，（CO2）-O-16和（COO）-O-16 -O-18。在富氧环境中，仍然发生蒸汽气化并生成（COO）-O-16-O-18。燃烧反应方程式应描述为C + H-2 O-18 + O-16（2）=（COO）-O-16-O-18 + H-2 O-16在高温，高CO2和蒸汽浓度。 （COO）-O-16-O-18的生成高度依赖于燃料丰富的环境中O-2的浓度，但是O-2的供应对（COO）-O-16-O-18的形成几乎没有影响富氧的环境。此外，蒸汽供应的增加促进了（COO）-O-16-O-18的形成。蒸汽气化通常参与煤燃烧反应。 （CO）-O-18和H-2首先通过蒸汽气化在煤颗粒中局部生成，然后在边界层通过燃烧将其重新转化为（COO）-O-16-O-18和H-2 O-16反应。 （C）2016 Elsevier Ltd.保留所有权利。

著录项

  • 来源
    《Fuel》 |2016年第15期|409-417|共9页
  • 作者

    Li Zehua; Wang Yin; Li Zhiwei; Luo Guangqian; Lin Shiying; Yao Hong;

  • 作者单位

    Huazhong Univ Sci & Technol, Sch Energy & Power Engn, State Key Lab Coal Combust, Wuhan 430074, Peoples R China|Chinese Acad Sci, Inst Urban Environm, Key Lab Urban Pollutant Convers, Xiamen 361021, Peoples R China;

    Chinese Acad Sci, Inst Urban Environm, Key Lab Urban Pollutant Convers, Xiamen 361021, Peoples R China;

    Chinese Acad Sci, Inst Urban Environm, Key Lab Urban Pollutant Convers, Xiamen 361021, Peoples R China;

    Huazhong Univ Sci & Technol, Sch Energy & Power Engn, State Key Lab Coal Combust, Wuhan 430074, Peoples R China;

    Japan Coal Energy Ctr, Minato Ku, 3-14-10 Mita, Tokyo 1080073, Japan;

    Huazhong Univ Sci & Technol, Sch Energy & Power Engn, State Key Lab Coal Combust, Wuhan 430074, Peoples R China;

  • 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

    Coal combustion; High CO2 and steam concentrations; Steam gasification; H-2 O-18; (COO)-O-16-O-18;

    机译：燃煤;高CO2和蒸汽浓度;蒸汽气化;H-2 O-18;（COO）-O-16-O-18;

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