毒气泄漏事故应急用个体呼吸防护用品防护效果研究

本文对毒气泄漏事故应急过程中公众常用的个体呼吸防护用品的防护效果进行了研究.针对硫化氢气体,利用无机气体防护时间检测系统,测试研究了滤毒盒、简易防护口罩、毛巾等个体防护用品在不同工况下的防护性能,试验结果表明,有毒气体浓度及温湿度两种工况条件均对个体防护用品的防护时间有较大影响,滤毒盒的防护效果远好于简易防护口罩,毛巾的防护效果较差,在此基础上进一步分析了毒气泄漏事故应急过程中个体呼吸防护用品的选择策略.本研究可为建立个体防护对策的选择方法提供基础数据和参考.

Study on protection performance of individual respiratory protective devices for toxic gas leakage accident

In this paper the protection performance of individual respiratory protective devices(RPE) for public in emergency of toxic gas leakage accident was studied.Taking hydrogen sulfide as example and by applying the breakthrough time test system,the protection performances of individual RPE,such as respirator with filter cartridges,disposable filtering facepiece and towel,in different conditions were tested.The experimental results showed that both the two conditions,including the concentration of toxic gas and the environmental temperature and humidity,had great influence on the protection time of RPEs.The filter cartridges performed far better than the filtering facepiece,and the protection performance of towel was weak.On this basis,the selection strategy of individual respiratory protective devices for public in emergency of toxic gas leakage accident was further analyzed.It can provide basic data and reference for the establishment of selection method for individual protective countermeasures.