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化工学报  2014 

泡沫陶瓷填料旋转填充床微观混合性能

DOI: 10.3969/j.issn.0438-1157.2014.08.018, PP. 2976-2980

Keywords: 旋转填充床,微观混合,泡沫陶瓷填料,反应,反应器,混合

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Abstract:

采用碘化物-碘酸盐平行竞争反应为工作体系,以离集指数(XS)表征微观混合性能,实验考察了物料体积流量、H+浓度、旋转填充床转速、物料体积流量比等对两种不同孔径的新型整体泡沫陶瓷填料旋转填充床的微观混合性能的影响。结果表明,孔径较小的泡沫陶瓷填料更利于微观混合;H+浓度、进料体积流量比的增加会导致XS增加;而旋转填充床转速、进料流量的增大都可使XS下降。在实验研究的基础上,利用团聚模型计算泡沫陶瓷填料旋转填充床微观混合时间(tm),得到tm范围为0.385~8.55ms。与传统不锈钢丝网填料对比,泡沫陶瓷填料tm最小值(0.385ms)低于不锈钢丝网填料的tm最小值(1.6ms),表明泡沫陶瓷填料的微观混合性能优于传统不锈钢丝网填料。

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