中国电力 ›› 2017, Vol. 50 ›› Issue (6): 32-37.DOI: 10.11930/j.issn.1004-9649.2017.06.032.06

• 二次再热燃煤发电技术专栏 • 上一篇    下一篇

国电泰州电厂2×1 000 MW二次再热机组NOx、SO2超低排放技术应用

张世山1, 陈振宇2, 郑鹏2, 陈鸥2, 杨建辉2   

  1. 1. 国电江苏电力有限公司,江苏 南京 210014;
    2. 北京国电龙源环保工程有限公司,北京 100039
  • 收稿日期:2017-03-20 出版日期:2017-06-20 发布日期:2017-07-12
  • 作者简介:张世山(1965-),男,河北河间人,高级工程师,从事工程设计及工程建设管理。E-mail: zhangss@gdjiangsu.com.cn
  • 基金资助:
    国家高技术研究发展计划(863计划)资助项目(No.2010AA065003)

Applications of NOx and SO2 Ultra-Low Emission Technologies for the 2×1 000 MW Double Reheat Units in Guodian Taizhou Power Plant

ZHANG Shishan1, CHEN Zhenyu2, ZHENG Peng2, CHEN Ou2, YANG Jianhui2   

  1. 1. Guodian Jiangsu Power Generation Co., Ltd., Nanjing 210014, China;
    2. Beijing Guodian Longyuan Environmental Engineering Co., Ltd., Beijing 100039, China
  • Received:2017-03-20 Online:2017-06-20 Published:2017-07-12
  • Supported by:
    ; This work is supported by the National High Technology Research and Development Program of China (863 Program) (No. 2010AA065003).

摘要: 为使烟气中NOx、SO2排放达到超低水平,国电泰州电厂二期2×1 000 MW超超临界二次再热燃煤发电机组SCR脱硝系统采用了驻窝混合技术,烟气脱硫采用了单塔双循环湿法脱硫技术。简介驻窝混合技术机理和单塔双循环脱硫技术原理,介绍国电泰州电厂1 000 MW机组烟气脱硝脱硫设计方案及实施效果。实践结果表明,国电泰州电厂1 000 MW机组采用上述2项技术后,烟气中NOx和SO2实现了超低排放,NOx和SO2脱除效率分别达到90.3%和99.6%,其排放质量浓度分别为31 mg/m3和15 mg/m3,远低于国家超低排放限值,且优于燃气轮机排放水平。

关键词: 燃煤发电, 1 000 MW, 超超临界机组, 二次再热循环, 超低排放, 驻窝混合, SCR烟气脱硝, 单塔双循环烟气脱硫, 示范工程

Abstract: In order to realize the ultra-low emission of NOx and SO2 in the flue gas, the eddy-mixing technology and the single tower with dual loop desulfurization technology are used in the SCR de-NOx system and the flue gas desulfurization system respectively in the 2×1 000 MW ultra-supercritical coal-fired generating units of Guodian Taizhou Power Plant Phase Ⅱ Project. In this paper, the principles of the eddy-mixing technology and the single tower with dual loop desulfurization technology are introduced, and the design scheme and the implementation effect of the flue gas desulfurization and denitrification of the units are presented as well. The practical results show that by adopting these two technologies, the ultra-low emission of NOx and SO2 in the flue gas has been achieved with the removal efficiencies of 90.3% and 99.6% and the emission concentrations of 31 mg/m3 and 15 mg/m3, respectively, which are far below the national ultra-low emission limits, and even better than the emission level of gas turbines.

Key words: coal-fired power generation, 1 000 MW, ultra-supercritical unit, double reheat cycle, ultra-low emission, eddy-mixing, SCR denitrification, single tower with dual loop desulfurization, demenstration power plant

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