焦油渣配煤炼焦对焦炭机械强度的影响研究及配比预测  

Study on the influence of tar residue coal blending coking on the mechanical strength of coke and the prediction of proportions

作　　者：张昀朋 鲁励 袁东营 周琦 ZHANG Yunpeng;LU Li;YUAN Dongying;ZHOU Qi(China Coal Research Institute Corporation Ltd.,Beijing 100013,China;National Energy Technology&Equipment Laboratory of Coal Utilization and Emission Control,Beijing 100013,China;CCTEG Low-carbon Technology Institute,Beijing 100013,China)

机构地区：[1]煤炭科学技术研究院有限公司,北京100013 [2]国家能源煤炭高效利用与节能减排技术装备重点实验室,北京100013 [3]中国煤科低碳技术研究院,北京100013

出　　处：《煤质技术》2024年第5期79-84,共6页Coal Quality Technology

基　　金：煤炭科学技术研究院有限公司技术创新Ⅱ类基金资助项目(2022CX-Ⅱ-01)。

摘　　要：研究焦油渣配煤炼焦对炼焦煤质量和焦炭质量的影响并分析其内在关联,可利用不同配比对黏结指数的影响规律以确定焦油渣配入炼焦煤的最佳配比,从而为焦油渣炼焦配煤在工业中的应用提供技术指导支撑。选取某焦化厂煤焦油渣和炼焦煤作为实验样品,在堆密度、粒度等条件不变的情况下分别配入3.0%和5.0%的焦油渣进行炼焦试验。结果表明:配入焦油渣后的炼焦煤水分、全硫均有所增加,但灰分降低,即针对本身挥发分不高的炼焦煤,配入焦油渣则有利于提高挥发分;焦炭的空干基水分和挥发分略有增加,全硫有所减少,且焦炭的机械强度有所提升;通过分别添加1%~5%的焦油渣分析黏结指数变化规律,发现焦油渣配比控制在3.0%~4.5%时,既能保证焦炭的黏结指数不降低,又能满足尽可能多地配入焦油渣以实现固废资源化利用。This study examines the influence of blending coal tar residue with coking coal on the quality of both the coking coal and the resultant coke,and delves into their underlying correlations.By leveraging the influence pattern of varying blending ratios on the caking index,an optimal blending ratio of tar residue in coking coal is determined,thereby providing technical guidance for the industrial application of tar residue in coal blending for coking.Experimental samples were sourced from a specific coking plant,including coal tar residue and coking coal.Coking tests were conducted with tar residue blended at 3.0%and 5.0%,respectively,while maintaining constant conditions such as bulk density and particle size.The results revealed that after blending tar residue,the moisture and total sulfur content of the coking coal increased,whereas the ash content decreased.For coking coals with inherently low volatile matter content,the incorporation of tar residue was advantageous in enhancing the volatile matter.Additionally,the air-dried moisture and volatile matter of the coke slightly increased,the total sulfur content decreased,and the mechanical strength of the coke was improved.By analyzing the variation pattern of the caking index with the addition of tar residue ranging from 1%to 5%,it was discovered that when the tar residue blending ratio was controlled between 3.0%and 4.5%,it could ensure that the caking index of the coke did not decrease while maximizing the incorporation of tar residue,thereby facilitating the resource utilization of solid waste.

关 键 词：焦油渣 机械强度 炼焦煤质量 黏结指数 配入比例 堆密度 粒度 

分 类 号：TQ520.6[化学工程—煤化学工程]