工业废弃物对煤粉燃烧的催化研究

STUDY ON CATALYSITIC EFFECT OF INDUSTRIAL WASTE UPON PULVERIZED COAL COMBUSTION

利用热天平研究了7种不同工业废弃物(工业废渣)对云贵无烟煤和福建无烟煤着火温度的影响,发现盐泥2、锌渣、首钢和莱钢转炉渣对无烟煤着火温度的降低有着良好的催化作用,且催化作用随着工业废渣添加比例的增加而增强。通过对废渣成分的XRD分析,发现这些工业废渣中不同程度地含有碱金属、碱土金属的氧化物及其盐类。将几种工业废渣按一定比例混合后加入无烟煤燃烧,结果表明其催化效果明显强于1种工业废渣的催化效果。

By using the thermogravimetric analyser, the influence of seven different industrial wastes slags upon the ignition temperature of Yungui anthrathetic coal and Fujian anthrathetic coal has been studied,the results show that the second white lime mud,zincilate, steelmaking slag from shougang and LWG have a better effect upon reducing the ignition tempertaure of anthrathetic coal. By enhan- cing the adding proportion of waste slag, the ignition temperature can further be decreased. Through XRD analysis ,it is discovered the composition of waste slag was consisted in different degree of alka- line metals,oxides of alkaline- earth metals,and their salts, several industrial waste slags were mixed according to certain proportioning ratio and being effect of them was substantially stronger than that added into anthrathetic coal to burn, the catalytic of a single waste slag.