矿井避险空间生氧净化系统研究与试验

为了分析矿井避险空间生氧净化系统性能，根据其功能及工作原理，确定系统由气源装置、汇流装置、控制装置、CO2净化装置及CO净化装置组成。研究确定80人16 h需要15 MPa，40 L医用氧气瓶10个及4.78×105 g JS-1净化药剂，药剂更换频率为1.51 h。密闭模拟试验表明：药剂去除效率与CO2初始体积分数无关，而与风机位置、风机功率及药剂层厚度相关；当风机位于药剂层下方时，最佳风机功率为185 W，最佳药剂厚度为250 mm，CO2去除效率为91%；组合后的生氧净化系统比独立系统提高了CO2净化性能及空间气体均匀扩散能力。现场载人实验证明：生氧净化系统能够保证空间O2体积分数为19.5%，CO2体积分数为0.6%~0.9%。

Study and experiment of the system of oxygen supply and purification in the mine refuge space

In order to analyze the performances of the oxygen supply and purification system in the mine refuge space，the system was consisted of the air supply device，confluence device，control device，carbon dioxide purification device and carbon monoxide purification device according to the function and operational principle of the system.10 medical oxygen bottles of 15 MPa，40 L and 4.78×105 g of JS-1 purification pharmacy are needed by 80 persons in 16 hours，and the JS-1 purification pharmacy is replaced once every 1.51 h.The airtight simulation experiment shows that the absorption efficiency is independent of the initial volume fraction of carbon dioxide while it is related to the fan position，fan power and pharmacy thickness.The absorption efficiency is determined to be 91%，the best fan power is 185 W and the best pharmacy thickness is 250 mm when the fan is under the pharmacy.The combined system of oxygen supply and purification has better performances of carbon dioxide purifying and gas uniform diffusion than the independent system.The manned experiment shows that the oxygen supply and purification system ensures the volume of oxygen is 19.5% and the volume of carbon dioxide is 0.6%~0.9%.