Enhancement of fine particle filtration with efficient humidification

doi:10.1016/j.cjche.2015.11.023

Chinese Journal of Chemical Engineering ›› 2016, Vol. 24 ›› Issue (4): 453-459.DOI: 10.1016/j.cjche.2015.11.023

• 第25届中国过程控制会议专栏 • 上一篇下一篇

Enhancement of fine particle filtration with efficient humidification

Yumei Zhang, Weidong Zhang, Zhengyu Yang, Junteng Liu, Fushen Yang, Ning Li, Le Du

The State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Membrane Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China

收稿日期:2015-04-04 修回日期:2015-06-02 出版日期:2016-04-28 发布日期:2016-05-27
通讯作者: Weidong Zhang, Le Du
基金资助:
Supported by the National High Technology Research and Development Program of China (863 Program) (No. 2013AA065003), the National Natural Science Foundation of China (No. 21276011), and the Ph.D. Programs Foundation of Ministry of Education of China (200800100001).

Enhancement of fine particle filtration with efficient humidification

Yumei Zhang, Weidong Zhang, Zhengyu Yang, Junteng Liu, Fushen Yang, Ning Li, Le Du

The State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Membrane Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China

Received:2015-04-04 Revised:2015-06-02 Online:2016-04-28 Published:2016-05-27
Contact: Weidong Zhang, Le Du
Supported by:
Supported by the National High Technology Research and Development Program of China (863 Program) (No. 2013AA065003), the National Natural Science Foundation of China (No. 21276011), and the Ph.D. Programs Foundation of Ministry of Education of China (200800100001).

摘要/Abstract

摘要： Filtration is one of the most effective methods to remove suspended fine particles from air. In filtration processes, pressure drop of compact dust cake causes problems in efficiency and economy, which has received increasing attention and still remains challenging. In this study,we developed a novel technique to intensify the filtration of fine particles with efficient humidification. Two strategies for humidification, including ultrasonic atomization and steam humidification (controlling of ambient humidity), were employed and proved to be both effective. The regeneration frequency of the filter could be reduced by 55%with ultrasonic atomization,while steamhumidification could lead to a 78% reduction in regeneration frequency. The effect of operating conditions on pressure drop and the mass loading during filtration were investigated. The dust cake showed a loose and porous structure with an optimized droplet-to-particle ratio.With the ratio of 1.53 and 0.0282, themaximum mass loadingwas 552 g·m^-2 upon the ultrasonic atomization and 720 g·m^-2 upon the steam humidification. The results show that humidification could slow down the increase of pressure drop during filtration and improve the efficiency of process.

关键词: Filtration, Humidification, Liquid bridge, Pressure drop, Dust cake structure

Abstract: Filtration is one of the most effective methods to remove suspended fine particles from air. In filtration processes, pressure drop of compact dust cake causes problems in efficiency and economy, which has received increasing attention and still remains challenging. In this study,we developed a novel technique to intensify the filtration of fine particles with efficient humidification. Two strategies for humidification, including ultrasonic atomization and steam humidification (controlling of ambient humidity), were employed and proved to be both effective. The regeneration frequency of the filter could be reduced by 55%with ultrasonic atomization,while steamhumidification could lead to a 78% reduction in regeneration frequency. The effect of operating conditions on pressure drop and the mass loading during filtration were investigated. The dust cake showed a loose and porous structure with an optimized droplet-to-particle ratio.With the ratio of 1.53 and 0.0282, themaximum mass loadingwas 552 g·m^-2 upon the ultrasonic atomization and 720 g·m^-2 upon the steam humidification. The results show that humidification could slow down the increase of pressure drop during filtration and improve the efficiency of process.

Key words: Filtration, Humidification, Liquid bridge, Pressure drop, Dust cake structure

Yumei Zhang, Weidong Zhang, Zhengyu Yang, Junteng Liu, Fushen Yang, Ning Li, Le Du. Enhancement of fine particle filtration with efficient humidification[J]. Chinese Journal of Chemical Engineering, 2016, 24(4): 453-459.

Yumei Zhang, Weidong Zhang, Zhengyu Yang, Junteng Liu, Fushen Yang, Ning Li, Le Du. Enhancement of fine particle filtration with efficient humidification[J]. Chin.J.Chem.Eng., 2016, 24(4): 453-459.

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Enhancement of fine particle filtration with efficient humidification

Enhancement of fine particle filtration with efficient humidification

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