摘要
为了研究陕北地区富油煤的自然产出粒级、煤质特征及最佳利用途径,以陕北侏罗纪煤田曹家滩煤矿延安组富油煤为研究对象,对综放采条件下采出的原煤进行了粒级和煤质特征研究,针对不同粒级的煤质特性探讨了其对煤制焦油、气化、动力燃烧等利用途径的适配性。结果表明:在综放采条件下,不同粒级原煤的产率随粒级的减小呈现减少的趋势,镜质组含量则呈现先增加后减小的特征,惰质组变化趋势相反,壳质组含量无明显变化;随着粒级减小,各样品中水分、硫分呈增高趋势,灰分呈降低趋势,挥发分、固定碳、发热量呈现先增高后降低的趋势,热稳定性呈现先降低后增加的趋势,哈氏可磨指数和煤对CO_(2)反应性无明显的变化趋势;综合煤质特征和煤质技术指标,大于30 mm的块煤主要可作为Ⅲ级煤制兰炭用煤、Ⅱ级煤制焦油用煤、Ⅱ级固定床气化用煤、Ⅰ级清洁动力用煤使用,30~0.5 mm粒级煤可作为Ⅱ级煤制兰炭用煤、Ⅱ级煤制焦油用煤、Ⅰ级清洁动力用煤使用,其中13~6 mm粒级煤还可作为Ⅰ级固定床气化用煤使用,6~3 mm、3~0.5 mm粒级煤还可作为Ⅱ级流化床气化用煤使用,-0.5 mm粒级煤可作为Ⅱ级煤制焦油用煤、Ⅱ级清洁动力用煤使用。陕北富油煤的不同粒级具有不同的煤质特征和适配性,可依据粒级大小应用于不同的清洁利用途径,以实现资源的最大化利用。
In order to explore the natural output particle size,coal quality characteristics and the best utilization way of tar-rich coal in northern Shaanxi,the tar-rich coal of Yan’an Formation in Caojiatan Coal Mine of Jurassic Coalfield in northern Shaanxi is taken as the research object,the particle size and coal quality characteristics of raw coal produced under the condition of fully mechanized caving mining were examined.According to the coal quality characteristics of different particle sizes,the adaptability of coal to tar,gasification,power combustion and other utilization ways was discussed.The results show that under the condition of fully-mechanized caving mining,the yield of raw coal with different particle sizes decreases with the decrease of particle size,and the vitrinite content increases first and then decreases.The change trend of inertinite is opposite,and there is no obvious change in the content of exinite.With the decrease of particle size,the moisture and sulfur content in each sample showed an increasing trend,the ash content showed a decreasing trend,the volatile matter,fixed carbon and calorific value showed a trend of increasing first and then decreasing,and the thermal stability showed a trend of decreasing first and then increasing.Hardgrove grindability index and coal reactivity to CO_(2) had no obvious change trend.Based on the characteristics of coal quality and technical indexes of coal quality,the lump coal larger than 30 mm can be mainly used as GradeⅢcoal to semi-coke coal,GradeⅡcoal to tar coal,GradeⅡfixed bed gasification coal and GradeⅠclean power coal.The coal of 30~0.5 mm can be used as GradeⅡcoal to semi-coke coal,GradeⅡcoal to tar coal and GradeⅠclean power coal.Among them,the coal of 13~6 mm can also be used as GradeⅠfixed bed gasification coal,and the coal of 6~3 mm and 3~0.5 mm as GradeⅡfluidized bed gasification coal.The-0.5 mm coal can be used as GradeⅡcoal tar coal and GradeⅡclean power coal.Different particle sizes of tar-rich coal in Northern Shaanxi have different coal quality characteristics and adaptability,which can be applied to different clean utilization ways according to particle size,so as to maximize the utilization of resources.
作者
乔军伟
李领晨
师庆民
赵泓超
张蕾
姜毅
张煜
傅鑫如
王朵
QIAO Junwei;LI Lingchen;SHI Qingmin;ZHAO Hongchao;ZHANG Lei;JIANG Yi;ZHANG Yu;FU Xinru;WANG Duo(College of Geology and Environment,Xi’an University of Science and Technology,Xi’an 710054,China;Shaanxi Key Laboratory of Geological Support for Coal Green Exploitation,Xi’an University of Science and Technology,Xi’an 710054,China;Geological Research Institute for Coal Green Mining,Xi’an University of Science and Technology,Xi’an 710054,China;Shaanxi Coal and Chemical Industry Group Co.,Ltd.,Xi’an 710100,China)
出处
《西安科技大学学报》
北大核心
2025年第3期560-569,共10页
Journal of Xi’an University of Science and Technology
基金
国家自然科学基金项目(42330808,42002194)
陕煤化工集团科学技术研究计划项目(2021SMHKJ-A-J-07-02)。
关键词
自然粒级
煤质特征
富油煤
延安组
煤炭清洁利用
natural grain size
coal quality characteristics
tar-rich coal
Yan’an Formation
clean utilization of coal
