页岩颗粒在回转干馏炉内停留时间的正态性分析
Normality Analysis on Residence Time of Shale Particle in Rotary Retorting
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摘要: 搭建回转干馏炉冷态实验装置,并通过试验得出了不同回转炉转速、倾角、出料口直径等操作与结构参数下页岩示踪粒子停留时间,采用Shapiro-Wilk正态性检验方法对停留时间样本进行检验,并进行正态样本离群值判断与处理。结果表明,停留时间总体分布在检出水平β=0.05下不拒绝正态性,对停留时间样本进行离群值分析能有效的剔除岐离值,使停留时间样本均值更接近其总体期望;通过不同工况下停留时间概率密度分布可以看出,停留时间总体均值及方差随转速、倾角的增加而减小。Abstract: The experiments were carried out in a cool simulated rotary retorting,obtained oil shale tracer particles residence time based on different rotational speeds,angles of inclination and outlet diameter.To test the residence time normality the Shapiro-Wilk normality tests method was used,its outliers were detected and treated.The analysis show that residence time population distribution do not reject normality at detection level b=0.05.The test of outlier can detect straggler effective,make the sample mean of residence time more close to population expectation.Furthermore,through comparison of residence time probability density distribution different working conditions,the residence time population expectation and variance decrease followed by rotational speeds and angles of inclination increase.
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