高二氧化碳浓度气氛下不同粒径生料热分解试验研究

Experimental study on thermal decomposition of raw materials with different particle sizes under high carbon dioxide concentration atmosphere

通过高二氧化碳浓度气氛下大热重试验和悬浮炉生料热分解试验,研究不同粒度范围(<45μm,45~75μm,75~250μm)的生料热分解特性。结果显示:相同试验条件下,粒度越细,生料热分解温度相对越低、分解完成时间越短,但三种粒径范围生料热分解性能差异性较小,表明在微米级范围内,粒度对生料热分解性能的影响有限。

Based on the thermal decomposition test of raw meal in large thermogravimetric experimental platform and suspension furnace under the atmosphere of high carbon dioxide concentration,we studied the thermal decomposition characteristics of raw meal in different particle size range(<45μm,45~75μm,75~250μm).The results show that under the same experimental conditions,as the particle size becomes finer,the thermal decomposition temperature of raw meal is lower,the decomposition time of raw meal is shorter.However,there is a little difference in the thermal decomposition performance of raw materials among the three particle size ranges,which illustrates that particle size has limited influence on the thermal decomposition performance of raw meal in the range of micron.