放射性气溶胶雾化捕集固定试验初步研究

辐射防护 ›› 2014, Vol. 34 ›› Issue (2): 81-85.

放射性气溶胶雾化捕集固定试验初步研究

武明亮¹, 张文俊¹, 唐德仲², 王旭东¹, 郭丽潇¹, 王永仙¹, 刘海青¹

1.中国辐射防护研究院,太原 030006;
2.中核四○四有限公司,兰州 732850

收稿日期:2012-06-01 出版日期:2014-03-20 发布日期:2025-01-03
作者简介:武明亮(1969—),男,1991年毕业于兰州大学放射性化学专业,2009年获中国辐射防护研究院环境科学专业硕士学位,高级工程师。E-mail:wumingl@163.com

Preliminary Study on Capturing and Encapsulating Radioactive Aerosol

Wu Mingliang¹, Zhang Wenjun¹, Tang Dezhong², Wang Xudong¹, Guo Lixiao¹, Wang Yongxian¹, Liu Haiqing¹

1. China Institute for Radiation Protection, Taiyuan 030006;
2. The 404 Co. Ltd, CNNC, Lanzhou 732850

Received:2012-06-01 Online:2014-03-20 Published:2025-01-03

摘要/Abstract

摘要： 后处理设施退役过程中会产生浓度较高放射性气溶胶,需要进行处理。研究选择碳酸钙粉为介质发生模拟气溶胶,选定一种固定剂,运用超声雾化技术对模拟气溶胶进行了捕集与固定试验,结果表明:模拟气溶胶粒子数浓度随着雾化捕集过程逐渐降低,粒径较大的粒子首先被雾化捕集而沉降;固定剂通入量对雾化捕集和固定气溶胶的效果影响显著。对一台²⁴¹Am污染的手套箱内气溶胶进行雾化捕集和固定研究表明:初始污染水平为183 Bq/m³的气溶胶经雾化捕集后可降至1.51 Bq/m³。雾化固定7 d时,气溶胶浓度无明显变化;固定14 d并启动排风扰动后,再悬浮率为6.5%,说明该固定剂对放射性气溶胶及松散污染物的捕集固定效果明显。

关键词: 放射性气溶胶, 捕集, 固定, 雾化

Abstract: The radioactive aerosol generated in decommissioning the reprocessing facilities should be treated for its high concentration. CaCO₃ powder was selected as the source to produce simulative aerosol in this study. The ultrasonic atomizing technology was applied to capture and encapsulate the aerosol. The experiment result shows that the concentration of simulative aerosol decreases with capture time; large particlesin aerosol can beeasily captured; when the capture liquid dose reduced to the certain value, the result of aerosol particle capturing and encapsulating became better evidently with the increase of dose. The experiment that carried out in a ²⁴¹Am contaminated glove-box proved the radioactive aerosol concentration could reduce from 183 Bq/m³ to 1.51 Bq/m³after the capturing process. The radioactive concentration in the glove-box had no obvious change on the seventh day. Resuspension rate of the aerosol was 6.5% when opened the ventilation at the fourteenth day. The capture liquid had good encapsulating result for radioactive aerosol and loose contamination.

Key words: radioactive aerosol, capture, encapsulate, atomizing

中图分类号:

TL944

武明亮, 张文俊, 唐德仲, 王旭东, 郭丽潇, 王永仙, 刘海青. 放射性气溶胶雾化捕集固定试验初步研究[J]. 辐射防护, 2014, 34(2): 81-85.

Wu Mingliang, Zhang Wenjun, Tang Dezhong, Wang Xudong, Guo Lixiao, Wang Yongxian, Liu Haiqing. Preliminary Study on Capturing and Encapsulating Radioactive Aerosol[J]. RADIATION PROTECTION, 2014, 34(2): 81-85.