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某燃煤电厂SCR脱硝装置堵塞问题分析及改进

Analysis and improvement of SCR denitrification devices blockage in a coal-fired power plant

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【作者】 徐克涛何永兵裴煜坤张杨

【Author】 XU Ketao;HE Yongbing;PEI Yukun;ZHANG Yang;Huadian Electric Power Research Institute Company Limited;

【机构】 华电电力科学研究院有限公司

【摘要】 结合某电厂300 MW机组脱硝装置运行实例,分析脱硝装置运行过程中整流装置、喷氨格栅、催化剂以及空气预热器等设备堵塞问题及其成因,并提出优化大灰滤网结构和布置、实行定期运行蒸汽吹灰器,调整声波吹灰器工作频次、及时清理选择性催化还原(SCR)脱硝装置各层及钢梁、导流板积灰、确保催化剂通道畅通以及更换积灰严重的催化剂等相应的优化改进措施,以提高SCR脱硝装置运行安全稳定性。可为防控和应对燃煤电厂SCR脱硝装置积灰提供参考。

【Abstract】 Combining with the practical operation of a denitrification device in a 300 MW unit,blockage in rectifying device,ammonia injection grid,catalyst and air preheater during the running of denitrification device and the corresponding causes are analyzed.It is proposed to optimize the structure and arrangement of the large ash filter,run steam soot blower regularly,adjust the frequency of the sonic soot blower,timely clean up the ash accumulated on steel beams and the deflectors on different layers of the selective catalytic reduction(SCR) denitration device,ensure the flow channels of catalyst and replace catalysts with severe ash deposit.These optimization measures can improve the security and stability of the SCR denitrification devices,which provides reference for prevention and control of the accumulation of ash in SCR denitrification devices of coal-fired power plants.

  • 【文献出处】 华电技术 ,Huadian Technology , 编辑部邮箱 ,2019年06期
  • 【分类号】X773;TM621
  • 【被引频次】3
  • 【下载频次】139
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