Effect of baffles on bubble behavior in a bubbling fluidized bed for chemical looping processes
作者机构：Key Laboratory of Energy Thermal Conversion and Control of Ministry of EducationSoutheast UniversityNanjing 210096China
出 版 物：《Particuology》 (颗粒学报（英文版）)
年 卷 期：2020年第18卷第6期
页 面：154-167页
核心收录：
学科分类：080704[工学-流体机械及工程] 080103[工学-流体力学] 08[工学] 0807[工学-动力工程及工程热物理] 0801[工学-力学（可授工学、理学学位）]
基 金：We gratefully acknowledge the support of this research work by the National Key R&D Program of China(2018YFB0605404) National Natural Science Foundation of China(51761135119)
主 题：Baffle Bubble behavior Fluidized bed Chemical looping CPFD simulations
摘 要：A bubbling fluidized bed is generally used as the fuel reactor in chemical looping ***,in sufficient gas-solid contact remains a steadfast *** such,we propose the use of in ternal baffles to split bubbles at a high gas velocity and to restrict the movement of large-scale solids in the fluidized *** investigated the effect of baffle arrangement on the bubble size and energy,pressure gradient,particle distribution,and particle velocity in a fluidized bed using a computational particle fluid dynamics simulation based on our experimental *** discuss the main influenci ng factors,which in elude presence of caps,number of baffles,and the baffle opening *** baffle structure with caps efficiently broke the large bubbles without creating jet *** baffles were deemed suitable in the bed owing to the small bubble size and uniform gas-solid distribution in each *** selected a baffle opening ratio of 20.5%,which improved the flow pattern without causing a significant increase in the pressure gradient and particle velocity through the *** also discussed the potential for sea ling up this baffled fluidized bed for industrial applications.
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