Rotational asymmetry of reactant concentration and its evolution in a circulating fluidized bed riser

作     者：Ajay K.Ray Madhumita B.Ray Jesse Zhu 

作者机构：Department of Chemical and Biochemical EngineeringThe University of Western OntarioLondonOntario N6A 5B9 Canada 

出 版 物：《Particuology》 (颗粒学报（英文版）)

年 卷 期：2012年第10卷第5期

页      面：573-581页

核心收录：

学科分类：081704[工学-应用化学] 0817[工学-化学工程与技术] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 081701[工学-化学工程] 0703[理学-化学] 0702[理学-物理学] 

主　　题：Circulating fluidized bedsRiserOzone decompositionRotational asymmetry 

摘      要：Rotational asymmetric distribution of reactant （ozone） concentration and its evolution along with the gas-solid reactive flow were studied in a 76 mm i.d., 10.2 m high circulating fluidized bed （CFB） riser reactor. The superficial gas velocity ranged from 3 to 5 m/s and the solids circulation rates were 50 and 100 kg/（m2 s）. Experimental results show that the asymmetry of reactant distribution can extend to a height close to the length of flow developing zone of the CFB riser reactor and then disappears. Based on the hydrodynamics of the gas and solid phases in the solids entrance region, this asymmetry can be attributed to the effect of the solids entrance structure.