避险空间超氧化钾供氧影响因素研究与试验

The Research and Experiment on Oxygen Supply Influencing Factors of Potassium Superoxide in Underground Refuge Space

KO2作为井下避险空间供氧系统中的备用氧源,在其他供氧方式失效时具有重要意义。从理论上分析了KO2的产氧原理,对KO2氧板进行了实验室湿度试验和CO2试验,测定了KO2氧板在不同环境下的产氧速率和CO2吸收速率。在湿度试验中,持续以0.4 L/min的速率通入CO2,得出相对湿度为90%时KO2氧板的产氧速率最高为0.129 L/min,CO2吸收速率为0.055 L/min;CO2试验中,相对湿度为90%,氧板在无CO2的试验中产氧速率更高为0.157 L/min;然后进行CO2吸收试验,使用2 kg的JS剂能够吸收以1.6 L/min的速率产出的CO2,并在4 h内使密闭空间中的CO2浓度保持在1%以下;最后结合载人试验验证了KO2氧板下井下避险空间使用是可行的。

Potassium superoxide as an alternate source of oxygen in oxygen supply system underground refuge space plays an important role when normal oxygen source supply fail. This paper have theoretically analyzed the principle of potassium superoxide oxygen production; then have finished the laboratory humidity and carbon dioxide test on the oxygen production rate and carbon dioxide absorption rate of potassium superoxide. During the humidity test there come to a conclusion that the maximum oxygen producing rate of the potassium superoxide is 0. 129 L /min in the humidity of 90% when the carbon dioxide supplied at the rate of 0. 4 L /min,the carbon dioxide absorption rates 0. 055 L /min; Then during the carbon dioxide absorption test,the use of 2 kg JS agent can absorb the output carbon dioxide at rate of 1. 6L /min,and carbon dioxide concentration is kept below 1% in 4 hours in confined space,last verified that the potassium superoxide used in underground refuge space is feasible through manned test.