Development of improved spray system with effective electrical electrodes for aerosol removal: An experimental study in UTARTS facility

IF 3.9 3区 环境科学与生态学 Q2 ENGINEERING, CHEMICAL
Ruicong Xu , Avadhesh Kumar Sharma , Shuichiro Miwa , Shunichi Suzuki
{"title":"Development of improved spray system with effective electrical electrodes for aerosol removal: An experimental study in UTARTS facility","authors":"Ruicong Xu ,&nbsp;Avadhesh Kumar Sharma ,&nbsp;Shuichiro Miwa ,&nbsp;Shunichi Suzuki","doi":"10.1016/j.jaerosci.2024.106431","DOIUrl":null,"url":null,"abstract":"<div><p>Safe reactor decommissioning, especially for damaged Fukushima Daiichi (1F) nuclear power plants, is vital for environmental safety. Key challenges include remotely cleaning radiation hotspots and cutting fuel debris within the damaged primary containment vessel. However, submicron radioactive Aerosol Particles (APs) can be generated, thus necessitating effective aerosol control and removal to avoid radioactive environmental pollution and reduce radiation exposure risks during 1F decommissioning. Flue gases containing submicron APs that result in environmental pollution can also generated from other industrial works, e.g., coal, mining and chemical sectors. Conventional water spray is difficult to scavenge these small APs. Although previous studies showed the effectiveness of charged droplets on accelerating aerosol removal, the charging configuration is also important to scavenging performance. Hence, this study performs aerosol scavenging experiments in our UTARTS facility with varying induction electrode designs. Experimental results show the saturation of scavenging efficiency at high voltage and indicate the importance of charging polarity. Moreover, proper configurations of electrode position, geometry and material are studied and discussed. Our findings can be beneficial for the improvement of spray system for aerosol removal to mitigate radioactivity release and minimize contaminated water production and have implications for gas purification in various environmental and chemical industries.</p></div>","PeriodicalId":14880,"journal":{"name":"Journal of Aerosol Science","volume":"181 ","pages":"Article 106431"},"PeriodicalIF":3.9000,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0021850224000983/pdfft?md5=e9ca1cd4708b82384b620b65ed1b7bb7&pid=1-s2.0-S0021850224000983-main.pdf","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Aerosol Science","FirstCategoryId":"93","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0021850224000983","RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}
引用次数: 0

Abstract

Safe reactor decommissioning, especially for damaged Fukushima Daiichi (1F) nuclear power plants, is vital for environmental safety. Key challenges include remotely cleaning radiation hotspots and cutting fuel debris within the damaged primary containment vessel. However, submicron radioactive Aerosol Particles (APs) can be generated, thus necessitating effective aerosol control and removal to avoid radioactive environmental pollution and reduce radiation exposure risks during 1F decommissioning. Flue gases containing submicron APs that result in environmental pollution can also generated from other industrial works, e.g., coal, mining and chemical sectors. Conventional water spray is difficult to scavenge these small APs. Although previous studies showed the effectiveness of charged droplets on accelerating aerosol removal, the charging configuration is also important to scavenging performance. Hence, this study performs aerosol scavenging experiments in our UTARTS facility with varying induction electrode designs. Experimental results show the saturation of scavenging efficiency at high voltage and indicate the importance of charging polarity. Moreover, proper configurations of electrode position, geometry and material are studied and discussed. Our findings can be beneficial for the improvement of spray system for aerosol removal to mitigate radioactivity release and minimize contaminated water production and have implications for gas purification in various environmental and chemical industries.

开发带有有效电电极的改进型喷雾系统,用于清除气溶胶:UTARTS设施中的实验研究
反应堆的安全退役,尤其是受损的福岛第一核电站(1F)的安全退役,对环境安全至关重要。主要挑战包括远程清理辐射热点和切割受损主安全壳内的燃料碎片。然而,亚微米放射性气溶胶粒子(APs)可能会产生,因此有必要在 1F 退役期间进行有效的气溶胶控制和清除,以避免放射性环境污染并降低辐射照射风险。其他工业工程(如煤炭、采矿和化工行业)也会产生含有亚微米气溶胶的烟气,造成环境污染。传统的水喷淋很难清除这些微小的 AP。尽管之前的研究表明带电液滴能有效加速气溶胶的清除,但带电配置对清除性能也很重要。因此,本研究在我们的UTARTS设施中利用不同的感应电极设计进行了气溶胶清除实验。实验结果表明,在高电压下清除效率会达到饱和,并表明充电极性的重要性。此外,我们还对电极位置、几何形状和材料的适当配置进行了研究和讨论。我们的研究结果将有助于改进用于清除气溶胶的喷雾系统,以减少放射性释放和污染水的产生,并对各种环境和化学工业中的气体净化产生影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
Journal of Aerosol Science
Journal of Aerosol Science 环境科学-工程:化工
CiteScore
8.80
自引率
8.90%
发文量
127
审稿时长
35 days
期刊介绍: Founded in 1970, the Journal of Aerosol Science considers itself the prime vehicle for the publication of original work as well as reviews related to fundamental and applied aerosol research, as well as aerosol instrumentation. Its content is directed at scientists working in engineering disciplines, as well as physics, chemistry, and environmental sciences. The editors welcome submissions of papers describing recent experimental, numerical, and theoretical research related to the following topics: 1. Fundamental Aerosol Science. 2. Applied Aerosol Science. 3. Instrumentation & Measurement Methods.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信