中国电力 ›› 2014, Vol. 47 ›› Issue (10): 117-121.doi: 10.11930/j.issn.1004-9649.2014.10.117.4

• 发电 • 上一篇    下一篇

低低温电除尘关键技术研究与应用

赵海宝, 郦建国, 何毓忠, 姚宇平   

  1. 浙江菲达环保科技股份有限公司,浙江 诸暨 311800
  • 收稿日期:2014-03-18 出版日期:2014-10-18 发布日期:2015-12-10
  • 作者简介:赵海宝(1987—),浙江诸暨人,硕士,从事电除尘技术研究及电除尘设计研究。E-mail: zhaohaibaozj@163.com
  • 基金资助:
    浙江省重大科技专项计划资助项目(2013C01054)

Research and Application on Low-Low Temperature Electrostatic Precipitator Technology

ZHAO Hai-bao, LI Jian-guo, HE Yu-zhong, YAO Yu-ping   

  1. Zhejiang Feida Environmental Science & Technology Co., Ltd., Zhuji 311800, China
  • Received:2014-03-18 Online:2014-10-18 Published:2015-12-10
  • Supported by:
    This work is supported by the Research and Demonstration Project on Low-Low Temperature Electrostatic Precipitator Technology and Recycling of Waste Heat System (2013C01054)

摘要: 低低温电除尘技术是电除尘新技术,其自身耗能少,并可去除烟气中大部分的SO3,在日本已经成为燃煤电厂烟气治理的主流,而国内对低低温电除尘器其各方面的性能和影响因素研究较少。针对低低温电除尘技术的煤种适应性、酸露点、灰硫比及其计算公式、二次扬尘、离线振打以及相互之间的影响进行了分析,研究了典型的低低温电除尘系统、灰硫比对电除尘器腐蚀和除尘效率的影响幅度、旋转电极与低低温电除尘的结合系统,列举了中国即将投运的具有代表性的低低温电除尘器。

关键词: 锅炉, 低低温电除尘技术, 性能, 灰硫比, 离线振打, 去除SO3

Abstract: As a new dust removal technology, the low-low temperature electrostatic precipitator (LLT-ESP) has the advantages of low energy consumption and high SO3 removal efficiency and has become the mainstream method in flue gas treatment in Japan. However, studies on the LLT-ESP performance are few in China. In this paper, the analysis on the coal adaptability, acid dew point, D/S ratio (the concentration ratio of PM to SO3 solution as H2SO4), dust re-entrainment and off-line rapping technique is conducted and the D/S ratio formula is proposed. The influencing amplitude of D/S ratio on the corrosion and dust removal efficiency of typical LLT-ESP and the application of combining mobile electrode with LLT-ESP are studied. At the end, some of the most representative LLT-ESPs which will be launched in China are introduced.

Key words: boiler, LLT-ESP, performance, D/S ratio, off-line rapping technique, SO3 removal

中图分类号: 

  • TM621.7+3