中国电力 ›› 2017, Vol. 50 ›› Issue (9): 125-128.DOI: 10.11930/j.issn.1004-9649.201607139

• 节能与环保 • 上一篇    下一篇

低低温电除尘器对粉尘特性和SO3脱除效果影响分析

杜振1, 杨立强2, 魏宏鸽1, 叶伟平1, 朱跃1   

  1. 1. 华电电力科学研究院,浙江 杭州 310030;
    2. 中国华电集团,北京 100031
  • 收稿日期:2016-12-12 出版日期:2017-09-25 发布日期:2017-09-11
  • 作者简介:杜振(1985—),男,河南平舆人,工程师,从事能源利用过程中烟气污染物综合治理的基础和应用研究。E-mail: adozn@163.com

Analysis on the Impacts of Low-Low Temperature Eletrostatic Precipitator on Dust Characteristics and SO3 Removal Effect

DU Zhen1, YANG Liqiang2, WEI Hongge1, YE Weiping1, ZHU Yue1   

  1. 1. Huadian Electric Power Research Institute, Hangzhou 310030, China;
    2. China Huadian Corporation, Beijing 100031, China
  • Received:2016-12-12 Online:2017-09-25 Published:2017-09-11

摘要: 分析了低低温除尘技术对粉尘特性和SO3脱除效果的影响,说明低低温除尘器通过降低粉尘比电阻来改善粉尘的荷电能力,有效地提高了除尘效果;同时增大粉尘平均粒径,有利于提高脱硫系统协同除尘效果;另外湿法脱硫系统本身不具备较高的SO3去除率,低低温电除尘器和湿式电除尘器对SO3的去除率可达到80%左右,因此,低低温电除尘器和湿式电除尘器可作为控制SO3的有效技术手段。

关键词: 火力发电机组, 烟气除尘, 低低温除尘器, SO3

Abstract: This paper analyzes the impacts of low-low temperature electrostatic precipitator(ESP) on dust characteristics and SO3 removal efficiency, and concludes that the low-low temperature ESP can improve the dust chargeability by reducing the dust resistivity, thus effectively improves the dust removal effect. Moreover, increasing the average diameter of the dust is good for improving the collaborative dust removal effect of the desulfurization system. The wet desulphurization system does not have high SO3 removal efficiency, while the low-low temperature ESP and the wet ESP can remove about 80% of SO3. Therefore, the low-low temperature ESP and the wet ESP are more effective to control SO3.

Key words: thermal power generation unit, flue gas dust removal, low-low temperature ESP, SO3

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