线板式静电除尘器数学模型的建立及数值仿真  

Research on mathematical model and numerical simulation of electrostatic precipitator with wire-plate

作　　者：李永兵[1] 曾珠[1] 李兵磊[2] 

机构地区：[1]河南工程学院安全工程学院,河南郑州451191 [2]福州大学紫金矿业学院采矿工程系,福建福州350108

出　　处：《河南工程学院学报（自然科学版）》2017年第1期28-32,共5页Journal of Henan University of Engineering：Natural Science Edition

摘　　要：简要介绍了线板式静电除尘器除尘过程中所发生的各种物理现象,在前人所建立的数学物理模型的基础上,通过对静电除尘器中高压静电场、气流场和电力场的分析,建立了粉尘粒子输运的数学模型,修正了以前理论中不合理的边界条件,重新建立了静电除尘器实际除尘规律的新的边界条件,建立了除尘电场模型、尘粒荷电模型、粉尘颗粒捕捉等一系列反映静电除尘过程的数学物理模型.运用差分法对静电除尘器的数学模型进行求解,利用Matlab和Fortran进行数值模拟算法设计和方程求解,得到了静电除尘器中粉尘粒子在高压静电场中的浓度分布和运动规律.利用所建立的实验模型对本研究数值模拟的结果进行验证,可知建立的数值模型和边界条件基本符合静电除尘器的除尘规律.In this paper,the various physical phenomena in the process of wire-plate electrostatic precipitator are briefly introduced.Based on the mathematical physics models established by previous researchers,the electrostatic field,air flow field and electric field in electrostatic precipitator are analyzed,The mathematical model of dust particle transport is established,and the unreasonable boundary condition is corrected.Based on the original theory,the new boundary condition of electrostatic precipitator is deduced and the dust field model is established.Charge model is constructed,including dust particle capture and a series of mathematical models of the reaction process of electrostatic dust removal.The mathematical model of the electrostatic precipitator is solved by the difference methods,and the numerical simulation algorithm and the equation are solved using Matlab and Fortran.The concentration distribution and the movement law of the dust particles in the electrostatic field were obtained.The experimental results show that the numerical model and the boundary conditions are basically consistent with the dedusting rule of the electrostatic precipitator,which is verified by the established experimental model.

关 键 词：静电除尘器 数学模型 粉尘粒子 数值仿真 除尘效率 

分 类 号：X701[环境科学与工程—环境工程]