摘要
本文研究了HNO3酸洗脱除黄铁矿对煤粉热解挥发分氮和焦炭氮析出的影响规律。分别对黄台煤和阳泉煤进行了HCL + HF酸洗和HNO3酸洗处理,在800℃,950℃和1100℃三个温度工况测取和分析原煤和酸洗煤挥发分和焦炭中NO的析出量。研究表明:温度升高,黄台煤和阳泉煤挥发分NO转化率fvol均有所增加,但是阳泉煤1100℃时fvol降低;三个温度下,脱除黄铁矿后焦炭NO转化率fchar均低于对应的脱灰煤;黄台煤和阳泉煤在三个温度工况下的煤粉NO转化率fcoal均大于与之对应的(fchar + fvol)。
Experiments have been carried out to investigate the effect of pyrite removal to the generation of volatile-N and char-N. HCL + HF acid washing and HNO3 acid washing were separately made to Huangtai coal and Yangquan coal, and we analyzed the volatile-N and char-N that generated from raw coal and acid washing coal in three temperature conditions. The results show that the per-cent conversion of volatile-N to NO (fvol) of two kinds of coal all increased with the temperature rising. But it is decreased for Yangquan coal in the condition of 1100?C. The percent conversion of char-N to NO (fchar) of coal that removes pyrite was all lower than which of coal that removes ash. The fcoal of the two kinds of coal is greater than the corresponding (fchar + fvol).
出处
《化学工程与技术》
CAS
2020年第3期153-160,共8页
Hans Journal of Chemical Engineering and Technology
基金
感谢山东省自然科学基金项目(ZR2017MEE009)资助。
