基于统计分析的Logistic回归模型，应用以概率表示粉尘云最小点火能的计算方法，在容积为1．28 L的M ike 3管内对不同浓度的烟酸粉尘-空气混合物进行了最小点火能测试实验，利用SPSS软件计算得到了各浓度下烟酸粉尘云点火成功概率为10％和50％时的最小点火能。结果表明，烟酸粉尘云最小点火能随浓度的增大呈现先减小后增大的趋势，最后保持在一定的能量范围内。与其他标准的计算结果相比，这种方法给出的结果更符合实际情况，也能满足不同生产环境对安全控制的需要。%According to the logistic regression model based on statistical analysis ,the experiments on the minimum ignition energy of different concentrations of nicotinic acid dust-air mixtures have been conducted in the Mike 3 tube by the calculation method of the minimum ignition energy of dust cloud which represented by probability ,the volume of Mike 3 tube is 1 .28 L .Utilizing SPSS software ,the minimum ignition energy of various concentrations of nicotinic acid dust cloud when the ignition prob-abilities are 10% and 50% has been calculated .The results show that the minimum ignition energy of nicotinic acid dust cloud has a tendency to first decrease and then increase with increasing concentra-tions ,finally maintain at a certain energy range .Compared with other standard calculations ,the view-point of ignition as a statistical phenomenon appears to be more consistent with the test data in engi-neering ,it can also meet the needs of different production environments for security control .
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