化工进展 ›› 2018, Vol. 37 ›› Issue (03): 1152-1160.DOI: 10.16085/j.issn.1000-6613.2017-1114

• 资源与环境化工 • 上一篇    下一篇

富氧燃烧烟气压缩净化的研究进展

黄强1, 张立麒2, 周栋2, 李小姗2   

  1. 1 九江学院机械与材料工程学院, 江西 九江 332005;
    2 华中科技大学煤燃烧国家重点实验室, 湖北 武汉 430074
  • 收稿日期:2017-06-07 修回日期:2017-07-16 出版日期:2018-03-05 发布日期:2018-03-05
  • 通讯作者: 黄强(1976-),男,博士,教授,主要从事燃煤CO2减排方面的研究。
  • 基金资助:
    国家自然科学基金(51566004)、江西省高等学校科技落地计划(KJLD14093)及江西省普通本科高校中青年教师发展计划访问学者专项(赣教2016-109)项目。

Research and development on the purification of oxy-fuel combustion flue gas in the process of compression

HUANG Qiang1, ZHANG Liqi2, ZHOU Dong2, LI Xiaoshan2   

  1. 1 Department of Mechnical and Materials Engineering, Jiujiang University, Jiujiang 332005, Jiangxi, China;
    2 State Key Laboratory of Coal Combustion, Huazhong University of Science & Technology, Wuhan 430074, Hubei, China
  • Received:2017-06-07 Revised:2017-07-16 Online:2018-03-05 Published:2018-03-05

摘要: 富氧燃烧技术具有大幅度降低单位燃料的NOx和SOx排放的优点,但酸性物质及汞等污染物的存在对CO2的后续资源化利用和埋存造成极大影响。本文从富氧燃烧烟气净化技术角度出发,简述了CO2压缩过程中NOx和SO2单独脱除、联合脱除的研究情况,以探寻协同脱除过程中NOx、SO2相互影响的规律以及具体N-S反应的路径;分析了压缩过程协同脱汞的研究进展,探讨压缩过程汞脱除的具体机制,观察NOx、SO2、H2O的含量对汞脱除的影响;最后介绍了富氧燃烧烟气压缩净化技术的中试应用情况。分析表明,现有研究大多注重于孤立地分析各种工况参数对NOx、SO2、HgO吸收脱除的影响,因此难以从反应机理上揭示多种污染物脱除之间的内在联系与相互作用机制,只有实现NOx、SOx及HgO等多种污染物的联合脱除,才能实现富CO2烟气的有效净化,从而大大减少富氧燃烧技术的设备投资和运行成本,有效促进该技术的大规模商业化应用。

关键词: 烟气, 净化, 富氧燃烧, 联合脱除

Abstract: Oxy-fuel combustion technology can reduce the NOx and SOx emissions per unit fuel. However,the presence of pollutants such as acid and mercury has a great impact on the subsequent utilization and storage of CO2. Based on the purification technology of the oxy-fuel combustion flue gas,the removal of NOx and SO2 and their combined removal in CO2 compression process are briefly described to explore the interaction between NOx and SO2 in the combined removal process and the path of N-S reaction. The research progress of combined mercury removal in compression process is analyzed to discuss the specific mechanism and the effects of NOx,SO2 and H2O on the removal of mercury. Finally,pilot scale application of compression purification technology is introduced. The analysis shows that most of the existing researches focus on the individual analysis of the effects of various operating conditions on the removal of NOx,SO2 and HgO. Therefore,it is difficult to reveal the internal relationship and interaction mechanism among the removal of pollutants. In order to realize the effective purification of the rich CO2 flue gas,the combined removal of pollutants such as NOx, SOx and HgO should be realized. Thus,the equipment investment and operation cost of oxy-fuel combustion technology can be greatly reduced,and the large-scale commercial application of the technology can be promoted effectively.

Key words: flue gas, purification, oxy-fuel combustion, combined removal

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