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首页> 外文期刊>The Canadian Journal of Chemical Engineering >Some Issues on Core-Annulus and Cluster Models of Circulating Fluidized Bed Reactors
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Some Issues on Core-Annulus and Cluster Models of Circulating Fluidized Bed Reactors

机译：循环流化床反应堆堆芯-环空和团簇模型的若干问题

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摘要

The one-dimensional cluster model and the core-annulus model are examined based on existing correlations. The core-annulus model is found to give reasonable agreement with ozone decomposition data when the effective interphase mass transfer rate constant is equal to about 0.11/s, which is one order smaller than the reported values based on gas tracer tests. The prediction from the core-annulus model that the reactor performance decreases with increasing the riser diameter is found to be inconsistent with limited experimental data The one-dimensional cluster model predicts that a riser reactor performs very close to the pseudo-homogeneous plug flow reactor because of the high mass transfer rate between the cluster and the dilute phase. The improvement of model predictions lies in the better characterization of the cluster shape, size and the mass transfer rate between the cluster and the dilute phases.
机译：基于现有的相关性，研究了一维聚类模型和核心-环空模型。当有效的相间传质速率常数约等于0.11 / s时，核-环空模型与臭氧分解数据具有合理的一致性，该常数比基于气体示踪剂测试的报告值小一个数量级。根据堆芯-环空模型的预测，发现反应堆性能随立管直径的增加而降低，这与有限的实验数据不一致。一维聚类模型预测，立管反应堆的性能非常接近拟均质塞流反应堆，因为团簇和稀相之间的高传质速率的关系。模型预测的改进在于更好地表征团簇的形状，大小以及团簇与稀相之间的传质速率。

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