东南大学学报（英文版）2021，Vol.37Issue(3)：272-275,4.DOI:10.3969/j.issn.1003-7985.2021.03.006
化学链燃烧系统中颗粒循环规律及气体流动路径数值模拟
Numerical simulation of solid circulation mechanism and gas flow paths in a chemical looping combustion system
摘要
Abstract
To study the gas-solid flow characteristics in a chemical looping combustion system integrated with a moving bed air reactor,a 3D full-loop numerical model was established using the Eulerian-Eulerian approach integrated with the kinetic theory of granular flow.The solid circulation mechanism and gas leakage performance were studied in detail.The simulation results showed that in the start-up process,the solid circulation rate first increased to approximately 5 kg/s and then dropped to approximately 1.2 kg/s;this observation was related to the dynamic control of the pressure distribution.In this system,the gas leakage between the inertial separator,upper air reactor,and lower air reactor was restrained by adjusting the pressure difference,thus obtaining optimal gas flow paths.When the pressures at the outlets of the inertial separator,upper air reactor,and lower air were 7.4,11.0,and 14.6 kPa,respectively,the gas leakage ratio was less than 1％ in the system.关键词
化学链燃烧/二级空气反应器/颗粒循环/窜气Key words
chemical looping combustion/two-stage air reactor/solid circulation/gas leakage分类
能源科技引用本文复制引用
邵亚丽,王旭东,金保羿..化学链燃烧系统中颗粒循环规律及气体流动路径数值模拟[J].东南大学学报（英文版）,2021,37(3):272-275,4.基金项目
The National Natural Science Foundation of China(No.51976034),China Postdoctoral Science Foundation (No.2020M681455),the National Key R&D Program of China (No.2018YFC1901200),Jiangsu Planned Projects for Postdoctoral Research Funds,the Fundamental Research Funds for the Central Universities. （No.51976034）
