低碳化学与化工2025，Vol.50Issue(8)：12-25,14.DOI:10.12434/j.issn.2097-2547.20250134
气流床煤气化细渣燃烧特性及其工程化应用研究进展
Research progress on combustion characteristics and engineering application of fine slag from entrained-flow coal gasification
摘要
Abstract
With the increase of energy demand and environmental requirements in China,the efficient and clean disposal of coal gasification fine slag has become a critical issue constraining the green and low-carbon development of coal chemical industry.Although entrained-flow gasification technology has the advantage of efficient conversion,the fine slag produced is difficult to directly resource utilize due to its high moisture content,ash content,and residual carbon content.The formation mechanisms,compositional structures,and combustion characteristics of coal gasification fine slag were systematically reviewed,with a focus on analyzing the constraints of carbon graphitization,ash encapsulation effects,and pore structure on combustion activity.Two main approaches have been proposed in existing research to address the issue of poor combustion performance of coal gasification fine slag.One is through preheating,oxidation or fluidized melt combustion and other modification means to strengthen the combustion activity of the coal gasification fine slag alone.Another one is to improve the overall combustion efficiency by blending and burning with highly reactive fuels such as coal and biomass,utilizing synergistic effects.In engineering applications,circulating fluidized bed incinerator,high-temperature preheating decarburization equipment and blending process has made significant progress,which can effectively reduce the residual carbon content and energy recovery,but still facing equipment wear and corrosion,difficulties in burning off residual carbo,the risk of secondary pollution and the limited blending ratio of bottlenecks.The current technical challenges were summarized,and the development directions of resource utilization and reduction of fine slag from coal gasification were prospected,which can provide theoretical support and technical reference for promoting clean utilization of coal.关键词
气流床气化/煤气化细渣/细渣形成路径/理化特性/燃烧特性/工程化应用研究Key words
entrained-flow gasification/coal gasification fine slag/formation pathways of fine slag/physicochemical properties/combustion characteristics/engineering application research分类
化学化工引用本文复制引用
王庆云,高春雷,刘夏青,马利,方鹏程,李芳,白永辉,吕鹏,于广锁..气流床煤气化细渣燃烧特性及其工程化应用研究进展[J].低碳化学与化工,2025,50(8):12-25,14.基金项目
国家重点研发计划(2023YFC3904302) （2023YFC3904302）
宁东能源化工基地重点支持领域科技项目(2023NDKJXMLX022). （2023NDKJXMLX022）
