喷钙脱硫下煤粉着火的实时全息干涉法分析

RESEARCH ON COAL PARTICLE IGNITION IN EJECT-CALCIUM DESULPHURIZATION BY REAL-TIME HOLOGRAPHIC INTERFERENCE MEASURING

运用实时全息干涉测量技术和层析法,对不同钙硫比的混和煤试样作了激光点火实验。实验给出了轴对称颗粒试样周围的光学干涉图,通过Abel变换法由干涉条纹位移量计算出颗粒周围的折射率空间分布、温度场空间分布。实验不仅获得了喷钙脱硫对煤粉着火的影响情况, 同时也证明了实时全息干涉法是研究煤粉着火的有力工具。

Using real-time holographic interference measuring and chromatography technology, the optical interference figures around the test samples were recorded. The test samples are made by intermixing calcium into coal powder in different Ca/S mol ratio. Through these interference figures, refractive index distribution and temperature fields were calculated using Abel抯 transformation calculation technique. The results indicate the variation of ignition temperature field in different Ca/S mol ratio desulphurization. They also prove real-time holographic interference measuring is a powerful method for researching the ignition characteristics of coal particle.