预混喷雾增效细颗粒去除的电除尘实验研究

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Abstract In order to improve the collection efficiency of fine particles via electric field and achieve the requirement of ultra-low emission of particles, a novel pre mixed spray electrostatic precipitator was designed by separating the spray part and electronic field to enhance the agglomeration between particles and droplets. The influence of electric field voltage, plate spacing, air velocity, spray pressure and inlet dust concentration on the efficiency of dust removal was investigated in detail. The results showed that with the increase of voltage, the dust removal efficiency increased, the increasing tendency raised quickly and then slowed down to steady state. Reducing the distance between plates or the wind speed could raise the dust removal efficiency while the treatment air volume reduced. With the increasing of spray pressure, the dust removal efficiency increased firstly and then decreased. When the pressure value was 6MPa, the dust removal effect showed the largest value. The influence of inlet concentration of dust on the removal efficiency was quite low, the removal efficiency of particles with the size less than 2.5μm was large as 98.5%. In summary, the dust removal efficiency of pre mixed spray electrostatic precipitator was significantly enhanced compared with that of single spray or electrostatic precipitator, which has significant reference value for the design of ultra-low particulate emission devices.

Key words： dust removal wet electrostatic precipitator (WESP) water spray fine particles

Received: 31 December 2021

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X513

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	Articles by authors
	DENG Quan-long
	ZHUANG Ding-ding
	DING Hou-cheng
	LIAN Zhi-xu
	XU Yuan-di

Cite this article:

DENG Quan-long,ZHUANG Ding-ding,DING Hou-cheng等. Experimental study on electrostatic precipitator removal of fine particles with pre mixed spray[J]. CHINA ENVIRONMENTAL SCIENCECE, 2022, 42(7): 3077-3083.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2022/V42/I7/3077

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