现代煤化工设计煤质确定方法的探讨

Discussion on the method of determining the design coal quality of modern coal chemical industry

设计煤质数据是现代煤化工项目中重要的设计基础,直接影响到项目能否稳定运行。本文根据神华煤化工项目的建设经验,提出了原料煤设计煤质确定的程序方法。目前煤化工项目常用的煤气化技术包括:干粉气流床气化技术、水煤浆气化技术、固定床碎煤加压气化技术及流化床气化技术。根据不同气化技术对煤质的不同要求,归纳出了在煤化工项目确定设计煤质过程中所需的煤质分析项目。在煤样的采集与分析工作过程中,采集的煤样具有代表性是保证获得典型煤质数据的前提。文中根据项目配套的煤源矿井所处的生产阶段不同,提出了不同的煤样采集方案包括采样地点、煤样类型、采样质量、煤样粒度及采样方式等。同时对后续煤样制备与分析及最终数据校核工作进行了探讨。

Designed coal quality is an important design basis of modern coal chemical project,which could affect the stable operation of the project directly.In this text,based on the experience in the construction of Shenhua coal chemical projects,the program to determine designed coal quality was proposed.Modern coal gasification technology commonly used in coal chemical industries include:dry feed entrained flow gasification technology,coal-water slurry gasification technology,fixed bed gasification technology and fluidized bed gasification technology.The coal quality analysis projects were generalized based on different coal gasification technology for different coal quality requirement.In the coal sample collection and analysis process,acquisition of coal sample representative is prerequisite to typical coal quality data obtained.In this paper,according to the stage of coal mine,the different coal sample acquisition scheme were proposed,including sampling sites,the types of coal sample,sample weight,sample size and sampling mode.Besides,the coal sample preparation,analysis and the final data checking work also discussed in this paper.