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Experimental study on reactor performance of gas–solids low-velocity fluidized beds
Particuology ( IF 4.1 ) Pub Date : 2021-09-02 , DOI: 10.1016/j.partic.2021.08.006
Jiangshan Liu 1 , Jesse Zhu 1
Affiliation  

Reactor performance of bubbling fluidized bed (BFB) and turbulent fluidized bed (TFB) was carefully examined and systematically compared using catalytic ozone decomposition as a model reaction, based on a complete mapping of local flow structures and spatial distributions of ozone conversion and solids holdup. TFB clearly has a higher conversion and shows better reactor performance than BFB as a result of the vigorously turbulent flow and the relatively homogeneous gas–solids mixing in TEB. Besides, the intensive interaction between gas and solids in TFB leads to greater gas–solids contact efficiency of TFB over that of BFB. Due to gas bypassing and backmixing caused by bubbling behaviours and two-phase structure, BFB deviates significantly from a plug flow reactor and sometimes from a continuously stirred tank reactor. The flow structures essentially dictate the reactor performance in the low-velocity fluidized beds.



中文翻译:

气固低速流化床反应器性能试验研究

基于局部流动结构和臭氧转化率和固体滞留率空间分布的完整映射,使用催化臭氧分解作为模型反应仔细检查和系统比较鼓泡流化床 (BFB) 和湍流流化床 (TFB) 的反应器性能。由于 TEB 中强烈的湍流和相对均匀的气固混合,TFB 显然具有更高的转化率并显示出比 BFB 更好的反应器​​性能。此外,TFB 中气体和固体之间的强烈相互作用导致 TFB 的气固接触效率高于 BFB。由于鼓泡行为和两相结构引起的气体旁路和返混,BFB 显着偏离活塞流反应器,有时偏离连续搅拌釜反应器。

更新日期:2021-11-04
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