单区式双涡旋型收尘极板电除尘器荷电粒子输运模型及仿真研究

发布时间：2018-11-18 19:44

【摘要】：为进一步探究单区式双涡旋型收尘极板电除尘器(ESP)内部荷电粒子的输运规律,丰富与完善该电除尘器的除尘机理,在其结构特点的基础上建立了数学模型并寻找合适的边界条件,采用MATLAB数学软件对模型方程进行了仿真求解,并将收尘效率实验的结果与仿真求解结果进行了对比。研究结果显示:所建立的单区式双涡旋型在极板电除尘器内部荷电粒子在流场、扩散场、力场作用下的二阶偏微分输运模型方程及该模型的边界条件能反映内部粒子的运行规律;MATLAB数学软件仿真求解模拟结果表明:一定的运行条件下,在0~14μm粒径范围内,随着粒径的不断增加,收尘效率也逐渐提高,当粉尘粒径从2μm增加到14μm时,粉尘的收尘效率从85.2%提高到94.8%。通过实验验证,实验结果与MATLAB仿真结果的趋势基本一致,证明了模拟结果的可靠性。研究结果表明单区式双涡旋型收尘极板电除尘器性能优良,有良好的发展前景。
[Abstract]:In order to further explore the transport law of charged particles in (ESP), the mechanism of dust collection is enriched and improved. On the basis of its structural characteristics, the mathematical model is established and the appropriate boundary conditions are found. The model equation is solved by MATLAB software, and the experimental results of dust collection efficiency are compared with the simulation results. The results show that the single zone double vortex type charged particles are in the flow field and diffusion field in the polar plate electrostatic precipitator. The equation of the second-order partial differential transport model and the boundary conditions of the model can reflect the running law of the inner particles under the action of the force field. The simulation results of MATLAB software show that the dust collection efficiency increases gradually with the increasing of particle size in the range of 0 ~ 14 渭 m particle size, and the dust particle size increases from 2 渭 m to 14 渭 m. The dust collection efficiency increased from 85.2% to 94.8%. The experimental results are consistent with the MATLAB simulation results, and the reliability of the simulation results is proved. The results show that the single zone double vortex plate electrostatic precipitator has good performance and good prospect.
【作者单位】：江苏大学环境与安全工程学院;
【基金】：国家自然科学基金(51278229) 江苏省六大人才峰会基金(JNHB-018)~~
【分类号】：X773

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