邱剑勇,郭庆华,许建良,王蕾,于广锁

• 1:华东理工大学煤气化及能源化工教育部重点实验室上海市煤气化工程技术研究中心

摘要(Abstract)：

辐射废锅作为气流床煤气化中重要的热回收装置,可显著提高合成气热利用率。针对辐射废锅单面受热水冷壁及其表面覆盖的灰层和渣层,建立三维传热模型,并通过流动与传热耦合的数值模拟方法探究不同工况下水冷壁金属管和鳍片温度分布。结果表明,水冷壁表面温度随高度变化幅度较小。合成气温度下降导致水冷壁表面热流密度减小,金属管表面温度随之降低。水冷壁表面沉积物降低了合成气与冷却水之间的换热效率,但在一定程度上保护金属管和鳍片不受高温侵蚀。水冷壁与壳体之间通入保护气可有效降低鳍片温度。

关键词(KeyWords)： 气化;辐射废锅;水冷壁;传热;数值模拟

Abstract:

Keywords:

基金项目(Foundation): 国家重点研发计划(2017YFB0602601)

作者(Author): 邱剑勇,郭庆华,许建良,王蕾,于广锁

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