Experience of upgrading electrostatic precipitators for ultra-low emission from coal-fired power plants

被引：0
|
作者：
Xiao C. [1 ]
Wang S. [2 ]
Han P. [2 ]
机构：
[1] Shenhua Guohua Electric Power Co., Ltd., Beijing
[2] Shenhua Guoneng Energy Group Co., Ltd., Beijing
来源：
Xiao, Chuangying | 1600年 / Science Press卷 / 43期
关键词：
Electrostatic precipitator upgrading; ESP index; Integrating control; Rapping; Three-phase power source; Ultra-low emission;
D O I：
10.13336/j.1003-6520.hve.20170123019
中图分类号：
学科分类号：
摘要：
The electrostatic precipitator (ESP) upgrading is highly demanded for ultra-low emission from coal-fired flue gas. The particle emission can only be controlled by increasing ESP length or height under the guide of revised Deutsch Equation, traditionally. However, by adopting ESP index, the product of average, peak electrical strength, and specific collection area, particle emission can also be reduced by increasing operating voltage and current. The final dust emission can be limited under 10 mg/m3 by a series of upgrading steps: replacement of single-phase power source by three-phase power source, flue gas cooling under 110℃, mixed rapping with side-rapping for front-side fields and top-rapping for end-side fields, integration of desulfurization devices and ESPs, etc. Besides, replacement of fabric filter by ESP can prevent the clogging of filters and limit the visible near-stack plumes and acid aerosol mists while reducing particle emission. © 2017, High Voltage Engineering Editorial Department of CEPRI. All right reserved.
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收藏
页码：487 / 492
页数：5
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