Numerical Simulation For High Gas Velocity Electrical Precipitator With Transverse Collecting Plates

Electrostatic precipitator is one of the dust-Precipitated equipments which is most effective and widely used. But the large size, costly investment, and high steel consumption seriously restricte its wide application, and also bring many difficulties in laboratory studies.A new design was used in this research, and corona wire was placed in the gap of the collection plate where there was a high gas velocity. The rate of ion transport and the dust charged could be improved. It was feasible to obtain more accurate and visual results with the development of the computer science and the application of the numerical simulation. The modeling of the electrostatic precipitator has been an important assistant of designing, evaluating and studying electrostatic precipitators (ESPs).This paper studied the application of the numerical computational software FLUENT in electrostatic precipitators, built the mathematical physical model and constructed the governing equations (particle charging equation, electric field equation, ions conservation equation, gas flow by time-averaged conservation equations of mass and momentum together with particle motion and dynamics equations.) and boundary conditions based on the systemic comprehensive introduction about the particle removal mechanism by ESPs. At the same time, the complicated mathematics models have been solved by numerical simulation of FLUENT software. High gas velocity Electrical Precipitator With Transverse Collecting Plates was simulated by computational fluid dynamics (CFD) technology. The SIMPLE algorithm was used to calculate and the geometry model was divided by ICEM, which is one kind of pre-processing software. The relationship of gas velocity, dust particle size and voltage was examined by FLUENT software. The results suggested that with the improvement of applied voltage and dust particle size, collection efficiency was increased and gas velocity became a favorable factor to improve collection efficiency in a certain range. The results shown that high gas velocity Electrical Precipitator With Transverse Collecting Plates can not only has a high efficiency, but also increase treatment capacity, achieve miniaturization, and reduce disposable investment. Therefore, these can contribute to its wider application.