中国电力 ›› 2015, Vol. 48 ›› Issue (8): 1-7.DOI: 10.11930.2015.8.1

• 火电厂烟气除尘技术专栏 •    下一篇

一种布置在ESP进口封头的微颗粒捕集增效装置研究和开发

刘含笑,郦建国,姚宇平,沈志昂,潘民兴,郭峰   

  1. 浙江菲达环保科技股份有限公司,浙江 诸暨 311800
  • 收稿日期:2015-05-05 出版日期:2015-08-25 发布日期:2015-11-25
  • 作者简介:刘含笑(1987—),男,山东潍坊,硕士,工程师,从事燃煤电站PM2.5捕集增效与优化技术研发工作。E-mail: gutounan@163.com
  • 基金资助:
    国家高技术研究发展计划(863计划)“燃煤电站PM2.5捕集增效与优化技术与装备研制”(2013AA065002);国家国际科技合作专项项目“燃煤电站PM2.5控制湿式电除尘器联合研发”(2014DFA90620)

Research and Development of Enhanced PM2.5 Collection Device Installed in the ESP Inlet Hood

LIU Hanxiao, LI Jianguo, YAO Yuping, SHEN Zhiang, PAN Minxing, GUO Feng   

  1. Zhejiang Feida Environmental Science & Technology Co., Ltd., Zhuji 311800, China
  • Received:2015-05-05 Online:2015-08-25 Published:2015-11-25

摘要: 微颗粒捕集增效技术是目前燃煤电厂PM2.5控制较为经济有效的技术之一,但适用场合有限。利用CFD软件,分析了电除尘器进口封头内三层多孔板对不同极性颗粒的掺混效果,分别计算了导流板、接电导流板、接电直板对不同极性荷电颗粒掺混的促进作用,并对其气流分布进行验证,开发出一种布置在电除尘器进口封头内的微颗粒捕集增效装置,并配置声波清灰。该技术已在国电谏壁电厂14号炉1 000 MW机组电除尘器上成功投运,提效程度显著。

关键词: 燃煤电厂, 电除尘器, 凝聚器, PM2.5, 进口封头, 气流分布, 湍流强度

Abstract: Though limited by its application occasions, the PM2.5 collection enhancement technology is still one of the most economic and effective PM2.5 capture methods for the coal-fired power plants. With the CFD software, the effect of three-layer perforated plate in ESP inlet hood on different polarity particle mixtures is analyzed. Particularly, the effectiveness of turning vane, power-on turning vane and straight panel on different polarity particle mixtures are calculated respectively and the air flow distribution patterns are verified. In this way, the enhanced PM2.5 collection device installed in the ESP inlet hood is developed with sonic soot cleaning functionality equipped together. This device has been used successfully in the ESP of Guodian Jianbi Power Plant Boiler No.14, with 1 000 MW capacity. Significant improvement is observed in the application practice.

Key words: coal-fired power plant, ESP, coagulator, PM2.5, inlet hood, flow distribution, turbulence intens

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