低阶喷吹煤粉的爆炸性及其影响因素研究

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• 英文论文题名：Study on explosion and influence factors of low rank injection coal
• 论文作者：李振涛 ; 陈洪博 ; 王越
• 英文论文作者：Li Zhentao ; Chen Hongbo ; Wang Yue ; China Coal Research Institue Co. ; Ltd. ; State Key Laboratory of Coal Mining and Clean Utilization
• 年：2016
• 作者机构：煤炭科学技术研究院有限公司;煤炭资源高效开采与洁净利用国家重点实验室;
• 论文关键词：煤粉爆炸 ; 高炉喷吹用煤 ; 低阶煤 ; 煤粉细度
• 英文论文关键词：pulverized coal explosion ; blast furnace injection coal ; low rank coal ; fineness of pulverized coal
• 会议召开时间：2016-11-29
• 会议录名称：第三届煤炭科技创新高峰论坛——煤炭绿色开发与清洁利用技术与装备论文集
• 语种：中文
• 分类号：TF538.63;TQ53
• 学会代码：ZGMT
• 会议名称：第三届煤炭科技创新高峰论坛——煤炭绿色开发与清洁利用技术与装备
• 会议地点：中国北京
• 主办单位：中国煤炭工业协会、中国煤炭科工集团有限公司、中国煤炭学会、煤炭科学研究总院
• 学会名称：中国煤炭学会
• 页数：6
• 文件大小：453k
• 原文格式：O
• 会议级别：全国

摘要

为详细阐明低阶喷吹煤的爆炸性影响因素,针对低阶高炉喷吹煤粉的挥发分高、爆炸性强的特点,系统研究了煤粉的粒度、细度、配煤比例、配煤挥发分对爆炸性的影响。结果表明:随着煤粉粒度的增大以及细度的增加,煤粉的爆炸性逐渐变弱,直至变为无爆炸性。2种榆林地区的低阶长焰煤粒度<0.074.mm煤粉具有强爆炸性,粒度0.104~0.125 mm煤粉爆炸性显著降低,粒度0.15~0.25mm煤粉已无爆炸性。煤粉细度低于50%时,具有强爆炸性,细度在60%~70%时有明显的阶跃特征,爆炸性陡然降低。配煤的爆炸性与挥发分呈指数函数关系,挥发分V_(daf)为24%左右时,爆炸性有明显的阶跃特征,爆炸性陡然增加。
In order to clarify the explosive impact factors for low rank injection coal,according to the characteristics of high volatile and strong explosiveness for low rank blast furnace injection coal,The particle size,fineness of the pulverized coal and blending ratio,blending coal volatile affected to explosion were researched.The results showed that with the increase of coal powder particle size and fineness,the explosiveness became weak gradually,until no explosiveness.When particle size of two kinds of low rank coal from Yulin area was less than 0.074 mm,coal powder had strong explosiveness.When particle size increased to 0.104~20.125 mm,the explosiveness significantly reduced,while increased to 0.15~0.25 mm,there was no explosiveness.The pulverized coal had the strong explosiveness when fineness was lower than 50%,the explosiveness had obvious step characteristics within the range of fineness 60%~ 70%,explosiveness suddenly dropped.The explosiveness of blending coal had a index relationship with its volatile matter.The volatile matter of blending coal was about24%,the explosiveness had obvious step characteristics and bumped up.

引文

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