废塑料的添加比例对煤粉燃烧的影响

采用热重分析法，对比研究了不同比例废塑料对川煤集团瘦煤和务本精煤燃烧特性的影响. 结果表明，添加废塑料可提高煤粉的最大失重速度，降低煤粉的着火点、燃尽温度和最大失重速度时的温度，能有效提高煤粉燃烧率；在添加比例相同时，废塑料对低挥发性煤粉的助燃效果优于挥发分相对较高的煤粉，且在较低温度区域(500℃)的助燃作用最为明显；在添加比例不同时，当添加量较大时，比例为20%左右时助燃效果最为明显；当添加量较小时，添加0.5%即能使煤粉燃烧率明显提高.

Effect of Waste Plastics Addition Ratio on Combustion of Pulverized Coal

The effect of waste plastics addition on combustion characteristics of Chuanmei coal and Wuben coal was studied comparatively by thermogravimetry. The results show that adding waste plastics can increase the maximum weight loss rate, reduce the ignition temperature, decrease the burnout temperature and the temperature of the maximum weight loss speed of the pulverized coal, which effectively improves the combustion rate of pulverized coal; At the same waste plastics addition ratio, the combustion effect of low volatile pulverized coal is superior to that of high one, and the most obvious effect of combustion occurs in a relatively low temperature region (500℃); At different waste plastics ratios, when the addition is higher at about 20%, the combustion effect is most obvious; when the addition is lower at 0.5%, the combustion of pulverized coal is significantly improved.