煤质技术2025，Vol.40Issue(1)：37-43,7.DOI:10.3969/j.issn.1007-7677.2025.01.006
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
摘要
Abstract
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 vit-rinite 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 sig-nificant differences in the basic coal quality characteristics of the four types of coking coal,and the correlation be-tween 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 flow-ability 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 tempera-ture;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Key words
typical coking coal/vitrinite reflectance/colloidal flowability/surface morphology/pyrolysis/coke forming process/porosity分类
化学工程引用本文复制引用
王旭,刘福军,裴贤丰,赵奇,甘秀石,候士彬,周琦,王岩,武吉,王超,朱庆庙,赵振兴..典型焦煤在热解和成焦过程中的流动性和形貌变化规律[J].煤质技术,2025,40(1):37-43,7.基金项目
鞍钢股份有限公司B级科研课题基金资助项目(L2022A1C20303) （L2022A1C20303）
