首页|颗粒粒径与速度场对布袋除尘器性能影响研究

颗粒粒径与速度场对布袋除尘器性能影响研究

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为了研究布袋除尘器内颗粒粒径、速度场的相互的影响及其对除尘效率、布袋磨损的影响,采用RSM模型、颗粒随机轨道模型和多孔介质模型,对布袋除尘器进行了气-固两相流模拟.结果表明:颗粒粒径对速度的影响很小;X轴上速度从670 mm到壁面处速度一直在增大,Z轴从±670 mm处到壁面速度呈递增模式,而在Y轴上最大速度出现在出口处;进口处的速度场撞击壁面,会对壁面造成冲蚀,同时向下会形成涡旋,降低除尘效率;向上沿着壁面形成较大的分向速度,对第8 排的布袋产生磨损;除尘器对1.00~2.00 μm粒径的颗粒去除效果好,1.00 μm以下去除效果差.
The Impact of Particle Size and Velocity Field on the Performance of Bag Filter
In order to study the mutual influence of particle size and velocity field inside the bag filter,as well as their impact on dust removal efficiency and bag wear,the RSM model,particle random trajectory model,and porous medium model were used to simulate the gas-solid two-phase flow of the bag filter.The findings indicate that the particle size has a minimal impact on the velocity.The velocity along the X-axis increases from 670 mm to the wall,while the Z-axis demonstrates an upward trend from±670 mm to the wall.Additionally,the maximum velocity on the Y-axis is observed at the outlet.At the inlet,the velocity field collides with the wall surface,resulting in erosion and the formation of vortices that descend and reduce the efficiency of dust removal.A larger fractional velocity is generated along the wall in an upward direction,which results in the deterioration of the bag in the eighth row.The dust collector exhibits optimal performance in the removal of particles ranging 1.00~2.00 μm,however,its removal effect is less pronounced for particles below 1.00 μm.

particle sizevelocity fieldbag filterdust removal efficiency

殷启军、高浩军

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宣城职业技术学院,安徽 宣城 242000

安徽斑羚环保科技有限公司,安徽 合肥 231603

颗粒粒径 速度场 布袋除尘器 除尘效率

2024

徐州工程学院学报(自然科学版)
徐州工程学院

徐州工程学院学报(自然科学版)

影响因子:0.636
ISSN:1674-358X
年,卷(期):2024.39(4)