电袋复合式除尘器气流分布的数值模拟

【作者】 胡满银； 张静； 王小强； 高香林；

【机构】 华北电力大学 环境科学与工程学院； 江苏宇达电站辅机阀门制造有限公司；

【摘要】 本文建立了电袋复合式除尘器的三维结构模型,采用FLUENT软件对除尘器内的气流分布进行了数值模拟。流场的模拟采用κ-ε双方程模型,计算采用SIMPLE算法,电袋结合处的导流板采用了4种不同角度,模拟了三种不同工况下的气流分布情况。计算结果表明:电场风速为1m/s导流板角度为45°时,从电除尘器引入到袋式除尘器各除尘室的气流分配比较均匀:电场风速为0.5m/s和1.5m/s时,导流板角度分别为55°和35°时,从电除尘器引入到袋式除尘器各除尘室的气流分配比较均匀;其数值模拟结果较为合理,可作为电袋复合式除尘器结构设计优化的参考依据。更多还原

【Abstract】 3-D structure model of Electrostatic Fabric Filter was established,by which the numerical simulation of airflow distribution in the junction was carried on.A 2-equation modelk-εwas adopted to simulate the flow field,and the computation was based on the SIMPLE algorithm. The flow deflector in the junction of Electrostatic and Fabric Filter was designed to 4 different angles. The simulation results show that:when the velocity in the electric field is 1m / s and the angle of the flow deflector is 45°,the air distribution from the ESP into the fabric filter room is more uniform; when the velocity in the electric field is 0.5m/s and the angle of the flow deflector is 55°, the air distribution from the ESP into the fabric filter room is more uniform;when the velocity in the electric field is 1.5 m/s and the angle of the flow deflector is 35°,the air distribution from the ESP into the fabric filter room is more uniform.The numerical simulation results are reasonable and can be used as the reference to optimize the designing of Electrostatic Fabric Filter.更多还原