Abstract: In order to explore the protective performance of wet towels and filtering self-saving respirator under specific working conditions, a testing platform for the protective performance of filter tools was built. Seven materials, including hard polyurethane, soft polyurethane, paper, wood, cotton, PVC, and lithium batteries, were selected to test the main gas components in the combustion products, and the protective performance of ordinary towels against gas, smoke, and temperature was analyzed. The experimental results under specific operating conditions indicate that wet towels have a certain filtering effect on PM10 produced by 7 types of combustion materials, with an average filtering efficiency of 25.57%; It has a cooling effect on high-temperature flue gas, with an average decrease of 29.1 ℃; No significant filtration effect was observed for HCN and CO, with an average filtration efficiency of about 28% for C2H4O, 75% for SO2, and 84% for HCl; Considering the protective ability of the filtering self-saving respirator against CO and smoke, its performance is much better than wet towel, and has lower respiratory resistance.

Key words: fire smoke, fire filter tools, towel, filtering self-saving respirator, filtration performance