超声雾化法捕集与固定放射性气溶胶的实验研究
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- 英文论文题名：Experimental Study of Capturing and Encapsulating Radioactive Aerosol by Ultrasonic Atomization
- 论文作者：武明亮 ; 张文俊 ; 唐德仲 ; 郭丽潇 ; 王旭东 ; 张晓文 ; 王永仙 ; 刘海青
- 英文论文作者：WU Ming-liang ; ZHANG Wen-jun ; TANG De-zhong ; GUO Li-xiao ; WANG Xu-dong ; ZHANG Xiao-wen ; WANG Yong-xian ; LIU Hai-qing ; China Institute for Radiation Protection ; The 404 Co. ; Ltd. ; CNNC
- 年：2015
- 作者机构：中国辐射防护研究院;中核四〇四有限公司;
- 论文关键词：放射性气溶胶 ; 捕集固定 ; 超声雾化
- 英文论文关键词：radioactive aerosol ; capure ; encapsulate ; ultrasonic atomizing
- 会议召开时间：2015-09-21
- 会议录名称：中国核科学技术进展报告（第四卷）——中国核学会2015年学术年会论文集第5册（核材料分卷、辐射防护分卷）
- 语种：中文
- 分类号：TL943
- 学会代码：EGVD
- 会议名称：中国核学会2015年学术年会
- 会议地点：中国四川绵阳
- 主办单位：中国核学会
- 学会名称：中国核学会
- 页数：6
- 文件大小：381k
- 原文格式：O
- 会议级别：全国
摘要
核设施退役过程,对热点进行机械剥离去污产生的放射性气溶胶,粉尘含量高、放射性气溶胶浓度高,需要进行处理作业人员才能继续工作。本文运用超声雾化技术进行气溶胶的捕集与固定实验研究,结果表明:在添加剂含量2.0%~2.5%时,固定剂的表面张力较低,润湿气溶胶及松散污染的性能较好,对模拟气溶胶的捕集效率较高,扰动后再悬浮率低,固定的效果较好;采用本实验所用的的固定剂,对于机械剥离去污产生的初始浓度为5.16E+4 Bq/m~3且松散污染较大的~(241)Am污染气溶胶,经雾化捕集,气溶胶水平即可降至1.74 Bq/m~3,雾化捕集气溶胶效果良好。在雾化固定7 d时,气溶胶浓度为2.31 Bq/m~3,经排风扰动后,放射性气溶胶升至5.14 Bq/m~3,再悬浮率为0.005%,固定剂对此类气溶胶固定效果良好。
In nuclear facilities' decommission,the radioactive aerosol that generated in decontaminated the hot spot by mechanical stripping contarined amout of dust and had a high radioactive concentration.The aerosol must be pre-treated for operator's health.This article was concerned with the simulative aerosol's treatment with ultrasonic atomizing technology.The test showed that the capture liquid had higher capture rate of the aerosol particle when the surface active agent is 2.0%~2.5% wt for it's lower surface tension.The ~(241)Am aerosol generated in decontaminated by mechanical stripping had a radioactive concentration of 5.16 E + 4 Bq/m~3 and contained amount of loose contaminated dust.The ~(241)Am radioactive concentration decreased to 1.74 Bq/m~3 after encapsulating by atomizing the selected capture liquid.This showed the capture liquid had good result in capturing the aerosol particle.The radioactive concentration in the glove-boxes was 2.31 Bq/m~3 at seventh day.The radioactive concentration increased to 5.14 Bq/m~3 after the aerosol was disturbed by ventilation and the resuspension rate was 0.005%.The test rest indicated that the selected capture liquid had good encapsulating result for this kind of aerosol.
In nuclear facilities' decommission,the radioactive aerosol that generated in decontaminated the hot spot by mechanical stripping contarined amout of dust and had a high radioactive concentration.The aerosol must be pre-treated for operator's health.This article was concerned with the simulative aerosol's treatment with ultrasonic atomizing technology.The test showed that the capture liquid had higher capture rate of the aerosol particle when the surface active agent is 2.0%~2.5% wt for it's lower surface tension.The ~(241)Am aerosol generated in decontaminated by mechanical stripping had a radioactive concentration of 5.16 E + 4 Bq/m~3 and contained amount of loose contaminated dust.The ~(241)Am radioactive concentration decreased to 1.74 Bq/m~3 after encapsulating by atomizing the selected capture liquid.This showed the capture liquid had good result in capturing the aerosol particle.The radioactive concentration in the glove-boxes was 2.31 Bq/m~3 at seventh day.The radioactive concentration increased to 5.14 Bq/m~3 after the aerosol was disturbed by ventilation and the resuspension rate was 0.005%.The test rest indicated that the selected capture liquid had good encapsulating result for this kind of aerosol.
引文
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[4]胡传斌,张文仲,刘东.超声雾化除尘装置在鲍店煤矿选煤厂的研制与应用[J].选煤技术,2007(4):48-51.
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[2]Robert O Berg,William F Rigby,John P Albers.Method and apparatus for encapsulating particulates[P].US Patent Issued on March 2,1999.
[3]U.S.Department of Energy.Dose Reduction Techniques[R].HNF-63 16-FP.2000,5.
[4]胡传斌,张文仲,刘东.超声雾化除尘装置在鲍店煤矿选煤厂的研制与应用[J].选煤技术,2007(4):48-51.
[5]李冠文.超声波雾化技术在油烟净化上的应用研究[D].广州:广州工业大学,2008.
[6]代君伟.钻孔粉尘超声雾化除尘技术及机理研究[D].北京:中国矿业大学,2008.
[7]曾康生,胡乃联,程卫民,等.综放工作面湿润剂喷雾降尘机理及高效降尘湿润剂的煤炭学报,2009(34):1675-1680.
[8]马鹏勋.美国罗基弗拉茨环境技术基地退役技术[J].辐射防护通讯,2010(30):38-41.