Developing a Compact Particle Collector by Integrating a Wet Electrostatic Precipitator and an Inertia Mist Eliminator
Abstract Wet electrostatic precipitator (WESP) is a reliable alternative to realize the ultra-low emission of particulate matter from coal-fired power plants. This work proposes to develop a compact particle collector by integrating a WESP and an inertia mist eliminator (IME). The particle collectio...
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| Format: | Article |
| Language: | English |
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Springer
2021-10-01
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| Series: | Aerosol and Air Quality Research |
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| Online Access: | https://doi.org/10.4209/aaqr.210209 |
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| author | Zhengda Yang Hongbo Qiu Can Zhou Ye Jiang Riyi Lin Yang Yang Chenghang Zheng Xiang Gao |
| author_facet | Zhengda Yang Hongbo Qiu Can Zhou Ye Jiang Riyi Lin Yang Yang Chenghang Zheng Xiang Gao |
| author_sort | Zhengda Yang |
| collection | DOAJ |
| description | Abstract Wet electrostatic precipitator (WESP) is a reliable alternative to realize the ultra-low emission of particulate matter from coal-fired power plants. This work proposes to develop a compact particle collector by integrating a WESP and an inertia mist eliminator (IME). The particle collection efficiency and charging characteristics of the WESP were analyzed to determine the potential for compact design. Results show that the WESP was easy to achieve a collection efficiency of 95% for both pin and wire electrodes. Particle charging can still be guaranteed with short WESP length and high voltage, indicating the particle charging was sensitive to electrical parameters. Charges carried by the escaping particles acted as a bridge between the WESP and the IME. The collision enhanced by particle charging can lead to an improvement in overall efficiency and charge loss. The particle charge loss of the particle sized 7.29 µm was 22.6% and 29.4% for the one and two stage IME, which coincided with the efficiency enhancement of WESP. The collection efficiency significantly decreased as the WESP size decreased, but the collection efficiency can be enhanced by the combination with IME. The 6-wire WESP enhanced by one-stage IME can be considered the optimal combination because the WESP size can be shorten by 40% while maintaining a similar efficiency. The research findings are beneficial for the retrofit of air pollution control devices in limited space. |
| format | Article |
| id | doaj-art-04e1aeeb6cf0433c93ee6a319e73dcd6 |
| institution | DOAJ |
| issn | 1680-8584 2071-1409 |
| language | English |
| publishDate | 2021-10-01 |
| publisher | Springer |
| record_format | Article |
| series | Aerosol and Air Quality Research |
| spelling | doaj-art-04e1aeeb6cf0433c93ee6a319e73dcd62025-08-20T03:10:57ZengSpringerAerosol and Air Quality Research1680-85842071-14092021-10-01211211310.4209/aaqr.210209Developing a Compact Particle Collector by Integrating a Wet Electrostatic Precipitator and an Inertia Mist EliminatorZhengda Yang0Hongbo Qiu1Can Zhou2Ye Jiang3Riyi Lin4Yang Yang5Chenghang Zheng6Xiang Gao7State Key Lab of Clean Energy Utilization, Zhejiang UniversityShandong Guoshun Construction Group Co., Ltd.State Key Lab of Clean Energy Utilization, Zhejiang UniversityCollege of New Energy, Qingdao Engineering Research Center of Efficient and Clean Utilization of Fossil Energy, China University of Petroleum (East China)College of New Energy, Qingdao Engineering Research Center of Efficient and Clean Utilization of Fossil Energy, China University of Petroleum (East China)State Key Lab of Clean Energy Utilization, Zhejiang UniversityState Key Lab of Clean Energy Utilization, Zhejiang UniversityState Key Lab of Clean Energy Utilization, Zhejiang UniversityAbstract Wet electrostatic precipitator (WESP) is a reliable alternative to realize the ultra-low emission of particulate matter from coal-fired power plants. This work proposes to develop a compact particle collector by integrating a WESP and an inertia mist eliminator (IME). The particle collection efficiency and charging characteristics of the WESP were analyzed to determine the potential for compact design. Results show that the WESP was easy to achieve a collection efficiency of 95% for both pin and wire electrodes. Particle charging can still be guaranteed with short WESP length and high voltage, indicating the particle charging was sensitive to electrical parameters. Charges carried by the escaping particles acted as a bridge between the WESP and the IME. The collision enhanced by particle charging can lead to an improvement in overall efficiency and charge loss. The particle charge loss of the particle sized 7.29 µm was 22.6% and 29.4% for the one and two stage IME, which coincided with the efficiency enhancement of WESP. The collection efficiency significantly decreased as the WESP size decreased, but the collection efficiency can be enhanced by the combination with IME. The 6-wire WESP enhanced by one-stage IME can be considered the optimal combination because the WESP size can be shorten by 40% while maintaining a similar efficiency. The research findings are beneficial for the retrofit of air pollution control devices in limited space.https://doi.org/10.4209/aaqr.210209Particulate matterUltra-low emissionWet electrostatic precipitatorMist eliminatorDevice retrofit |
| spellingShingle | Zhengda Yang Hongbo Qiu Can Zhou Ye Jiang Riyi Lin Yang Yang Chenghang Zheng Xiang Gao Developing a Compact Particle Collector by Integrating a Wet Electrostatic Precipitator and an Inertia Mist Eliminator Aerosol and Air Quality Research Particulate matter Ultra-low emission Wet electrostatic precipitator Mist eliminator Device retrofit |
| title | Developing a Compact Particle Collector by Integrating a Wet Electrostatic Precipitator and an Inertia Mist Eliminator |
| title_full | Developing a Compact Particle Collector by Integrating a Wet Electrostatic Precipitator and an Inertia Mist Eliminator |
| title_fullStr | Developing a Compact Particle Collector by Integrating a Wet Electrostatic Precipitator and an Inertia Mist Eliminator |
| title_full_unstemmed | Developing a Compact Particle Collector by Integrating a Wet Electrostatic Precipitator and an Inertia Mist Eliminator |
| title_short | Developing a Compact Particle Collector by Integrating a Wet Electrostatic Precipitator and an Inertia Mist Eliminator |
| title_sort | developing a compact particle collector by integrating a wet electrostatic precipitator and an inertia mist eliminator |
| topic | Particulate matter Ultra-low emission Wet electrostatic precipitator Mist eliminator Device retrofit |
| url | https://doi.org/10.4209/aaqr.210209 |
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