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为确定适用于救生舱的较优氧烛配方,通过热重试验,确定氧烛催化剂Co3O4,Co2O3和Fe2O3的质量分数研究范围为3%~5%,及燃料Fe,Mg和Mn的质量分数研究范围为4%~8%。据此设计正交燃烧试验,综合分析氧烛药块的产氧量、产氧速率、表面最高温度,确定适用于救生舱的较优氧烛配方为88%NaClO3,6%Mn,5%Co2O3,1%高岭土。对以此配方制作的2.8 kg氧烛在环境温度不高于33.3℃,相对湿度不大于31%的舱内进行特性试验,得到其总供氧量241.0 L,生氧密度0.3 L/g,供氧速度17.3 L/min,利用率88.6%,生成有害气体φ(CO)≤0.000 1%,φ(CO2)≤0.06%,外壳最高温度≤115.1℃。结果表明,所得数据结果满足救生舱相关指标要求,该较优氧烛配方适用于救生舱。
In order to determine the optimal oxygen candle formula suitable for the life-saving tank, the mass fraction of the oxygen-containing catalyst Co3O4, Co2O3 and Fe2O3 was determined from 3% to 5% and the mass fraction of Fe, Mg and Mn were determined by TG test The range is 4% ~ 8%. Based on this, orthogonal test was designed to analyze the oxygen production, the oxygen production rate and the maximum surface temperature of the oxycodon block, and the optimum oxygen formulation for the rescue cabin was 88% NaClO3,6% Mn and 5% Co2O3 , 1% kaolin. The 2.8kg oxygen candle produced by this formula was tested for its properties in a tank whose ambient temperature was not higher than 33.3 ℃ and relative humidity not higher than 31%, and its total oxygen supply was 241.0 L and the oxygen density was 0.3 L / g for Oxygen rate of 17.3 L / min, utilization rate of 88.6%, generating harmful gases φ (CO) ≤ 0.000 1%, φ (CO2) ≤ 0.06%, the maximum shell temperature ≤ 115.1 ℃. The results show that the data obtained to meet the requirements of the life-saving tank-related indicators, the more suitable oxygen candle formula for life-saving capsule.