The air distributor plays a key role in circulating fluidized‐bed (CFB) boilers providing an even gas distribution in the cross section of the furnace. In most cases, this task under real conditions is very difficult to implement due to the destruction of the tuyeres. For this reason, the air distributors of many CFB boilers operate under conditions deviating from the design recommendations, which has a direct impact on the hydrodynamics of the fluidized bed and heat transfer conditions. This work reports studies on the performance of a tuyere‐type air distributor utilized in a CFB boiler and working under non‐reference operating conditions. Based on the results of simulation calculations, practical equations for a distributor pressure drop calculation have been derived taking into account a different degree of tuyere destruction.

中文翻译：

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非参考工况下循环流化床锅炉中空气分配器的压降分析

空气分配器在循环流化床（CFB）锅炉中发挥关键作用，可在炉膛的横截面上提供均匀的气体分布。在大多数情况下，由于风口的破坏，很难在实际条件下执行此任务。因此，许多CFB锅炉的空气分配器都在偏离设计建议的条件下运行，这直接影响了流化床的流体力学和传热条件。这项工作报告了关于CFB锅炉中使用的风口式空气分配器的性能研究，该空气分配器在非参考运行条件下工作。根据模拟计算的结果，考虑到不同的风口破坏程度，得出了用于分配器压降计算的实用公式。