Research and Application on Low-Low Temperature Electrostatic Precipitator Technology

doi:10.11930/j.issn.1004-9649.2014.10.117.4

Abstract

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

CLC Number:

TM621.7⁺3

ZHAO Hai-bao, LI Jian-guo, HE Yu-zhong, YAO Yu-ping. Research and Application on Low-Low Temperature Electrostatic Precipitator Technology[J]. Electric Power, 2014, 47(10): 117-121.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.2014.10.117.4

https://www.electricpower.com.cn/EN/Y2014/V47/I10/117

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