Numerical Simulation of Airflow Deflector in Large Electrostatic Fabric Precipitators

doi:10.11930/j.issn.1004-9649.2013.10.140.5

Abstract

Abstract: Through the study on the EFP of the 600-MW unit in a power plant, a 3-D model is established with the Pro/E software and the airflow distribution of the EFP is calculated with numerical simulation method. In the simulation, the bag surface is set as the porous-jump boundary condition and the airflow in the EFP can be adjusted by altering the deflectors. The simulation results show that the airflow distribution is affected by the number and opening ratio of the airflow deflectors. In the most even airflow distribution, the average airflow speed in the electrostatic area is 0.78 m/s with the Relative Root-Mean-Square Error (RRMSE) of 0.279 9. The airflow velocity in the fabrics is 0.6 m/s. The eddy current in the electrostatic area is reduced by modifying the diameter of the holes in the third deflector, which can improve the efficiency of dust removal.

Key words: electrostatic fabric precipitator, airflow distribution, numerical simulation, airflow deflector

CLC Number:

TM621.9

SUN Chao-fan, LONG Xin-feng, YU Xing-lu, LOU Bo. Numerical Simulation of Airflow Deflector in Large Electrostatic Fabric Precipitators[J]. Electric Power, 2013, 46(10): 140-145.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.2013.10.140.5

https://www.electricpower.com.cn/EN/Y2013/V46/I10/140

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