不同透过性下新型干式除尘器的数值模拟

Numerical Simulation on New Dry Dust Collector with Different Permeability

为了研究不同透过性下干式除尘器的降尘效果,Solidworks软件建立新型干式除尘器几何模型,采用CFD离散相模型对滤筒不同孔隙率条件下的降尘效果进行模拟,根据模拟结果提出了一种适用于新型干式除尘器的最佳孔隙率的滤筒。结果表明:当孔隙率逐渐增大,滤筒透过性增强,粉尘降尘率降低;孔隙率越小,滤筒透过性较差,粉尘降尘率高。结合实际工作环境对降尘率和通风状况良好条件的要求,分析不同透过性下新型干式除尘器的数值模拟结果,得到当孔隙率为0.6时,除尘器内部的风流流动性较好,滤筒降尘率达到了99.13%的结论。

In order to study the dust removal effect of the dry dust collector with different permeability,Solidworks software was used to establish a geometric model of the new dry dust collector,and CFD discrete phase model was used to simulate the dust removal effect under different porosity conditions of the filter cartridge.According to the simulation results,a filter cartridge with the best porosity suitable for the new dry dust collector was put forward.The results were concluded as follows.Firstly,when the porosity increased gradually,the permeability of the filter cartridge increased and the dust reduction rate decreased.Secondly,the smaller the porosity,the worse the permeability of the filter cartridge,and the higher the dust reduction rate.Combined with the requirements of the actual working environment for dust reduction rate and good ventilation conditions,the numerical simulation results of the new dry dust collector under different permeability were analyzed.It was found that,when the porosity was 0.6,the air flow fluidity inside the dust collector was good,and the dust removal rate of filter cartridge reached 99.13%.