Numerical Simulation And Process Optimization Of Converter Electrostatic Precipitator

Dry dust removal technology is the one of the main methods of guarantee dust emission standard in iron and steel enterprises at present.Study on the movement law of fine dust in converter flue gas in electrostatic precipitator and analysis of the effect of converter production process on fine dust collection have an important significance for further improving the dry dust removal effect of converter.Firstly,based on computational fluid dynamics theory and numerical simulation method and orthogonal simulation method,applying the FLUENT software,the influencing factors of the collector efficiency and the fine dust swirl phenomenon of dust electrostatic precipitator were analyzed systematically in this paper.From the results,Under the conditions of discharge voltage 35 k V,the influence degree of the electrostatic precipitator dust removal efficiency from high to low is particle diameter,velocity,dust true density,dust concentration and gas humidity.Under the optimum conditions,the dust removal efficiency will reach 99.9%;The influence degree of the vortex from high to low is flue gas velocity,corona electrode voltage,dust concentration,and particle diameter.Secondly,application of dynamic wind to simulate ion wind in the numerical model,effect of ion wind on dust removal efficiency at different working conditions in this paper.From the results,the faster flow rate,the lower effect of ion wind on dust removal efficiency will be.The higher particle diameter and corona electrode voltage,the higher effect of ion wind on dust removal efficiency will be.With the increasing of dust concentration in flue gas,the effect of ion wind on the dust removal efficiency decreases first and then increases.Through numerical simulation and workshop field data analysis,the results can provide a solid theoretical basis for improving the efficiency of dust removal and optimizing the process of converter smelting.