煤炭转化2011，Vol.34Issue(2)：36-40,5.
小龙潭褐煤流化床气化灰熔聚物的熔融特性
FUSION CHARACTERISTICS OF AGGLOMERATES FROM XIAOLONGTAN LIGNITE FLUIDIZEDBED GASIFICATION
摘要
Abstract
In order to understand the fusion characteristics of the agglomerates from the fluidized-bed gasification, the experiment was conducted to investigate the differences of ash fusion temperatures (AFTs) of the slag in the gasifier, spherical agglomerates and coal gangue ashes.It was analyzed from the aspects of coal ash ingredients and mineral crystal phase composition by chemical analysis and X-ray diffraction method (XRD).The results show that the AFTs of three ash residues are elevated from slag, spherical agglomerates to coal gangue ashes.The changes of ash compositions contribute to the variations of AFT, the decreasing of the total basic composition in three ash residues make AFTs increase, and vice versa.Low temperature molten matrix formed by gehlenite, anorthite and other calcium compounds make the AFTs of slag lower than the other two; the content of quartz in coal gangue ashes is higher that of spherical agglomerates and the skeleton role of mullite lead to the AFT of coal gangue ashes is higher than that of spherical agglomerates.The fusion characteristics differences of three ash residues are mainly caused by the migration and conversion during the process of Xiaolongtan lignite fluidized-bed gasification.关键词
小龙潭褐煤/流化床气化/灰熔聚物/熔融特性Key words
Xiaolongtan lignite/ fluidized bed gasification/ agglomerates/ fusion characteristics分类
化学化工引用本文复制引用
李风海,黄戒介,房倚天,王洋..小龙潭褐煤流化床气化灰熔聚物的熔融特性[J].煤炭转化,2011,34(2):36-40,5.基金项目
国家高技术研究发展计划(863)项目(2008AA050302)和中国科学院知识创新项目(KGCX2-YW-320). （863）
