TAN Jing;ZHU Chuan;

• 1:China Coal Research Institute Company of Energy Conservation
• 2:State Key Laboratory of Coal mining and Environment Protection
• 3:National Energy Technology & Equipment Laboratory of Coal Utilization and Emission Control

Abstract：

In order to realize deep processing and utilization of Shendong coal,thermogravimetric analyzer and tubular pyrolytic furnace were used to analyse pyrolytic characteristics of Shendong coal. Feasibility of semi-coke used in pulverized coal injection( PCI) were also conducted,and new path ways of usage of semi-cokes were proposed.The results show that qualities of Shendong coal with high tar yield( 8.15%) are excellent for low-temperature pyrolysis.The yield of coal tar is highest with lower ash in 550 ℃,and distillation temperature of more than 50% samples is less than 350 ℃. The contents of CH4 and CO2 decrease while H2 and CO increase in pyrolysis gases when temperature increases.The yields of pyrolysis water are basically kept at 16%. The injection characteristics of semi-coke are equal to the main injection coals used,so it is suitable for PCI.The semi-coke undergone mild pyrolysis could be used in PCI directly.It is graded utilized for semi-coke after tars extracted.

Key Words： pyrolytic characteristics;semi-coke;pulverized coal injection(PCI);Shendong coal

Abstract:

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Foundation:

Authors: TAN Jing;ZHU Chuan;

DOI: 10.13226/j.issn.1006-6772.18020601

References：

• [1]郭树才,胡浩权.煤化工工艺学[M].北京:化学工业出版社,2012:6-26.
• [2]邹冲,马成,赵俊学,等.中低温热解半焦作为高炉喷吹燃料的现状分析及建议[J].洁净煤技术,2017,23(1):57-64.ZOU Chong,MA Cheng,ZHAO Junxue,et al.Research status and suggestion of mid-low temperature pyrolysis semi-coke as the PCI fuel in blast furnace[J].Clean Coal Technology,2017,23(1):57-64.
• [3]毕学工,杨福,梁尚国,等.高炉喷吹黄陵弱粘煤的原煤特性的研究[J].钢铁,2009,44(6):14-19.BI Xuegong,YANG Fu,LIANG Shangguo,et al.Study of raw coal characteristics of Huangling slightly-caking coal for blast furnace injection[J].Iron and Steel,2009,44(6):14-19.
• [4]白晓光,郑占斌.包钢高炉喷吹低温半焦试验研究[J].包钢科技,2017,43(1):31-33.BAI Xiaoguang,ZHENG Zhanbin.Experimental research on low temperature semi coke injection in blast furnace of Baotou Steel[J].Science and Technology of Baotou Steel,2017,43(1):31-33.
• [5]张立国,任伟,刘德军,等.半焦作为高炉喷吹用煤研究[J].鞍钢科技,2015(1):13-17.ZHANG Liguo,REN Wei,LIU Dejun,et al.Study on semi-coke used as pulverized coal for injection into blast furnace[J].Angang Technology,2015(1):13-17.
• [6]杨双平,蔡文淼,郑化安,等.高炉喷吹半焦及其性能分析[J].过程工程学报,2014,14(5):896-900.YANG Shuanping,CAI Wenmiao,ZHENG Huaan,et al.Performance analysis of semi-coke for blast furnace injection[J].The Chinese Journal of Process Engineering,2014,14(5):896-900.
• [7]杨天钧,苍大强,丁玉龙.高炉富氧煤粉喷吹[M].北京:冶金工业出版社,1996:333-335.
• [8]OHNO Y,FURUKAWA T,MATSUURA M.Combustion behavior of pulverized coal in a raceway cavity of bluest furnace and its application to a large amount injection[J].ISIJ International,1994,34(8):641-648.
• [9]IWANAGA Y.Gasification rate analysis of unburnt pulverized coal in blast furnace[J].ISIJ International,1991,31(5):500-504.
• [10]张卫东,祁成林,张建良,等.高炉喷吹煤粉的粉体流动性与煤质相关性[J].北京科技大学学报,2012,34(4):430-436.ZHANG Weidong,QI Chenglin,ZHANG Jianliang,et al.Correlation between the powder flow ability and coal quality of pulverized coal for a blast furnace[J].Journal of University of Science and Technology Beijing,2012,34(4):430-436.
• [11]张鹏.卡尔指数法在评价煤粉粉体特性中的应用[J].中国粉体技术,2000,6(5):33-36.ZHANG Peng.Application of Carr index method in comprehensive evaluating properties of coal powder[J].China Powder Science and Technology,2000,6(5):33-36.
• [12]白向飞,李文华,陈文敏,等.我国西部弱还原程度煤分布及煤质特征研究[J].煤炭学报,2005,30(4):502-506.BAI Xiangfei,LI Wenhua,CHEN Wenmin,et al.Study on distribution and characteristics of coals with weak reductive degree in West China[J].Journal of China Coal Society,2005,30(4):502-506.
• [13]LIU Zhenyu,GUO Xiaojin,SHI Lei,et al.Reaction of volatiles:A crucial step in pyrolysis of coals[J].Fuel,2015,154:361-369.
• [14]张双全,吴国光.煤化学[M].徐州:中国矿业大学出版社,2009:111-128.
• [15]刘随生.中国动力煤资源及利用[M].徐州:中国矿业大学出版社,2005:277-279.
• [16]周师庸,赵俊国.炼焦煤性质与高炉焦炭质量[M].北京:冶金工业出版社,2008:131-155.
• [17]何选明,付鹏睿,张杜,等.低阶煤低温热解半焦在模拟高炉喷吹条件下的燃烧性能[J].化工进展,2014,33(7):1702-1706.HE Xuanming,FU Pengrui,ZHANG Du,et al.Experimental investigation of combustion behavior of low rank coal char under simulated blast furnace conditions[J].Chemical Industry and Engineering Progress,2014,33(7):1702-1706.