Mixing fluidization behaviors of biomass and catalyst in catalytic combustion
The utilization of new energy plays an important role in reducing carbon emission.The biomass conversion has become a key issue.Biomass catalytic combustion can effectively reduce ignition points,promote combustion efficiency,which provides a new idea for improving biomass direct combustion.This article focuses on the biomass catalytic combustion process in a fluidized bed reactor.Taking straw fuel as an example,a discrete element method is implemented to explore the fluidization behavior between straw fuel and catalyst particle with different aspect ratios.The influence of biomass aspect ratio on the mixing behavior of particle is analyzed.The results reveal that the mixing degree between biomass and catalyst particles around the bubbles is relatively high.In the central region of the bed,the influence of gas-solid interaction forces on particle mixing behaviors is enhanced.As the aspect ratio of biomass particles increases,the degree of particle mixing in the bed decreases and the non-uniform distribution increases.This study provides a theoretical basis for the process control of fluidized bed biomass catalytic combustion.
energy chemistrystrawbiomassfluidized bedcatalytic combustionaspect ratio
王家兴、王敏、郭石开、解冠宇、丁芸、张志鹏
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Yantai Longyuan Power Technology Co.,Ltd.,Yantai 264006,Shandong,China
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