典型焦煤在热解和成焦过程中的流动性和形貌变化规律  

Changes in the quality characteristics of typical coking coal during pyrolysis and coking processes

作　　者：王旭 甘秀石 候士彬 周琦 王岩 武吉 王超 朱庆庙 赵振兴 刘福军 裴贤丰 赵奇 WANG Xu;GAN Xiushi;HOU Shibin;ZHOU Qi;WANG Yan;WU Ji;WANG Chao;ZHU Qingmiao;ZHAO Zhenxing;LIU Fujun;PEI Xianfeng;ZHAO Qi(State Key Laboratory of Metal Material for Marine Equipment and Application,Anshan 114009,China;Ansteel Iron&Steel Research Institutes,Anshan 114009,China;Department of Manufacture Management of Angang Steel Corporation Ltd.,Anshan 114021,China;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]海洋装备用金属材料及其应用国家重点实验室,辽宁鞍山114009 [2]鞍钢集团钢铁研究院,辽宁鞍山114009 [3]鞍钢股份炼焦总厂,辽宁鞍山114021 [4]煤炭科学技术研究院有限公司,北京100013 [5]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 [6]中国煤科低碳技术研究院,北京100013

出　　处：《煤质技术》2025年第1期37-43,共7页Coal Quality Technology

基　　金：鞍钢股份有限公司B级科研课题基金资助项目(L2022A1C20303)。

摘　　要：研究典型焦煤在热解和成焦过程中的流动性和形貌变化规律,对于揭示炼焦煤成焦机制具有重要意义。利用煤岩学分析方法研究4种焦煤在镜质体反射率及其分布规律、显微组成等方面的差异性,利用吉氏流动度研究热解温度对炼焦煤胶质体流动性的影响,利用坩埚焦实验和电镜研究热解温度对热解固体产物表面形貌的影响。结果表明:4种焦煤的基础煤质特性有较大差异,常规指标与焦炭质量的相关性不太显著;JM-4镜质组含量最低,其与JM-2同属于低镜质组煤,JM-1和JM-3属于中镜质组煤;JM-2和JM-3对应胶质体的流动性随着温度的升高增长迅速,且胶质体的流动性大小基本一致,而相同温度下JM-1对应的流动性最小;随着热解温度的提高,JM-1所得热解产物的孔隙率呈现先增加后减小的趋势,在胶质体达到最大流动度时所对应的颗粒孔隙率最高。Studying the transformation law of the coking coal during pyrolysis and the reflectance and the morphology in coking processes is of great significance for revealing the coking mechanism of coking coal.The differences in vitrinite reflectance,distribution patterns,and microscopic composition of four types of coking coal were studied using coal petrology analysis methods.The effect of pyrolysis temperature on the flowability of coking coal plastie mass was studied using the gieseler fluidity.The influence of pyrolysis temperature on the surface morphology of pyrolysis solid products was studied using crucible coke experiments and electron microscopy.The results indicate that there are significant differences in the basic coal quality characteristics of the four types of coking coal,and the correlation between conventional indicators and coke quality is not very significant;JM-4 has the lowest content of vitrinite and it is classified as a low vitrinite coal along with JM-2,JM-1 and JM-3 belong to the mesoscopic coal group;the flowability of the corresponding plastie mass in JM-2 and JM-3 increases rapidly with increasing temperature,and the flowability of the plastie mass is basically the same,while the flowability of JM-1 is the smallest at the same temperature;as the pyrolysis temperature increases,the porosity of the pyrolysis products obtained from JM-1 shows a trend of first increasing and then decreasing,with the highest particle porosity corresponding to the maximum flowability of the gel body.

关 键 词：典型焦煤 镜质体反射率 胶质体流动性 表面形貌 热解 成焦过程 孔隙率 

分 类 号：TQ522.16[化学工程—煤化学工程]