摘要
在核设施退役及核应急过程中,放射性气溶胶的快速有效控制是首要任务。采用水性聚氨酯作为压制剂,研究了压制剂用量、雾化压力和气溶胶浓度等工艺条件下模拟气溶胶粉尘颗粒物的凝并及去除效果,获得了优化工艺条件:雾化压力0.3 MPa,水性聚氨酯雾化量/待处理空间容积≥0.09 L/m3时,压制效率达95%;当待处理空间内气溶胶颗粒初始浓度为2 000~15 000 p/cm3时,半值时间变化范围为26.4~59.1 min。
In the case of decommissioning nuclear facilities and responding to nuclear emergency,the rapid control of radioactive aerosol is the primary task. The influence of the dosage of the suppressing agent,the atomization pressure,the concentration of aerosol on the coagulation and the removal of the simulated powdery dust were studied using waterborne polyurethane( WPU) as suppressing agent. The results indicated that the optimal parameters was atomization pressure of0. 3 MPa and the volume concentration of WPU above 0. 09 L / m3,where the suppressing efficiency was as high as 95%. The half time was in the range of 59. 1 to 26. 4 min with respect to aerosol with initial concentration of 2 000 ~ 15 000 p / cm3.
出处
《环境工程》
CAS
CSCD
北大核心
2016年第S1期535-537,617,共4页
Environmental Engineering
关键词
水性聚氨酯
雾化
气溶胶
凝并
半值时间
waterborne polyurethane
spraying
aerosol
coagulation
half time
