煤质对气流床煤气化的影响研究进展

Progress in effects of coal properties on entrained-flow gasification

对煤质与气流床气化炉的关系进行了论述。介绍了水煤浆气化炉与干煤粉气化炉的各自技术特点,分别讨论了煤阶、成浆性、发热量、工业分析、元素分析、灰熔融性、渣的流动性、熔渣腐蚀及煤灰沉积对气流床煤气化选型、设计、操作条件及气化性能的影响。分析了两类气化炉对不同煤性质的适应性并给出了典型的煤质适用范围。总结了工业应用针对不同煤质要求的解决方案并回顾了相应领域的研发进展。在分析讨论的基础上对煤质与气流床气化炉的选择、应用与进一步研发方向提供了建议。

The relationship of coal properties and entrained-flow gasifiers were described in this paper.Technical features were introduced for coal-water slurry feed gasifiers and dry pulverized coal feed gasifiers.The effects of coal rank,slurryability,heating value,proximate analysis,ultimate analysis,ash fusibility,slag flowability,molten slag corrosion,and ash deposition were discussed for the entrained-flow gasifier selection,design,operating conditions,and gasification performance.The gasifier flexibilities on coal properties were analyzed and typical suitable coal property ranges of the two gasifiers were given.The industrial solutions on various coal property requirements were summarized and the related research development progress were reviewed.Recommendations were given for the coal properties and gasification technology selection,application,and further research development directions.