煤质技术2025，Vol.40Issue(3)：12-18,7.DOI:10.3969/j.issn.1007-7677.2025.03.002
相近煤阶1/3焦煤的镜质组在成焦过程中的相互作用
Interaction of vitrinites in 1/3 coking coals with similar rank during coking process
摘要
Abstract
The study on the interaction of vitrinites wth similar coal ranks during the pyrolysis process is beneficial for a better understanding of the coking mechanism of coals,which could provide experimental and theoretical basis for improving coal blending theory and carbonization mechanism.The vitrinites in Tangshan(TS)and Hegang(HG)1/3 coking coals with similar ranks were enriched,and then mixed in different proportions to coking.The gasification reac-tivity,microcrystalline structure and surface morphology of the coke were investigated by TG,XRD and SEM.The results show that the maximum gasification rate(DTGmax)of the coke decreases first and then increases with the increase of TS vitrinite content,and the TS an HG vitrinites have interaction with each other during coking process.Based on the differ-ence in the gasification rate,an interaction factor(α)is proposed to characterize the degree of interaction(α=4.93%).The results of XRD and SEM analysis show that the graphitization degree of coke derived from TS∶HG=1∶1 coal blending is higher,and the surface morphology of coke is relatively smooth and the lattice defects are less.Therefore,the interac-tion between the two vitrinites during pyrolysis processes could promote the growth of microcrystals of coke,and the mi-crocrystalline structure of coke is more orderly,which could lead to the stronger ability to resist CO2 erosion for cokes.关键词
镜质组/成焦过程/石墨化程度/焦炭气化反应性/微晶结构/表面形貌/交互作用因子Key words
vitrinite/interaction/graphitization degree/gasification reactivity/microcrystalline structure/surface morphology/degree of interaction分类
化学工程引用本文复制引用
罗云红,刘超雷,李金泽,孙章..相近煤阶1/3焦煤的镜质组在成焦过程中的相互作用[J].煤质技术,2025,40(3):12-18,7.基金项目
国家自然科学基金煤炭联合基金资助项目(U1361212) （U1361212）
