【摘要】 本文就水煤浆的粒度配比对减少加水量和降低粘度的作用进行了理论分析和实验研究,对两种大、小不同的颗粒混合后的自然堆积空隙率进行了实验,并导出了计算公式.最后推导出大、小颗粒的最佳质量比和最佳粒径比,理论分析结果与试验结果的误差达到满意程度,并在我们用大同煤所做的实验中得到验证。作者用分析热天平,对各种粒度配比的水煤浆,煤粉及单块煤进行了着火特性和燃烧速率的测定,实验说明同样粒度配比的煤粉和水煤浆的着火温度接近;平均粒度减少将使着火温度降低;空隙率减少将使着火温度升高。更多还原

【Abstract】 The effect of the particle distribution of coal water slurry on its viscosity has been investigated both experimentally and analytically. The Theoretical prediction of the natural porosities of rigid ball piles and coal powder has been developed. The optimum particle diameter ratio and the corresponding optimum mass ratio are obtained, and verified in the slurry preparation process at our laboratory. The ignition performance of CWS droplets by using a precise analytical thermobalance has been studied. The influence of the particle diameter and the porosity on the ignition performance of CWS is found by experiment.更多还原