The structural optimization and numerical simulation of wet centrifugal precipitator at working face of diving airway
LIU Jian
YAO Hai-fei
WEI Chuan-guang
JIN Long-zhe
LI Jie-nan
Abstract：For the characteristics of driving working face of Chinese coal mine, designed three types of structural model of wet centrifugal precipitator. In order to optimize their internal structure efficientily, three types of structural physical model were established and meshed by Gambit2. 2. Used Fluent6. 2 to solve containing dust airflow three-dimensional velocity distribution in the precipitator, static pressure field distribution, the characteristics of turbulent flow field and the move track of different size of dust in the precipitator. Simulation results show that shunt plate plays an important role in separating airflow. It can make the movement of vortex steady, besides, maintaining the continuity and stability of high-speed airflow,the symmetry of static pressure distribution, the regular change of turbulent kinetic energy; steady flow field and high speed centrifugation are critical to remove respirable dust. The precipitator which contains shunt plates and two rows of baffle in the middle (Model three) has advantage in maintaining air flow velocity and the changement of turbulent kinetic energy compared with the one which contains Shunt plates and three rows of baffle in the middle (Model one), however, two die areas take place in the front of the first baffle, which reduce the collection efficiency. Through the above-mentioned aspects of the general comparison, chose the structure of Model one as the production model of precipitator.
Keywords：heading facewet centrifugal precipitatorstatic pressureturbulent kinetic energydust trajectoriesvortex
Publication Date：2010-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 424-428 )