The Study Of The Dust Removal Performance Of Coupling Reinforced Electrostatic-fabric Integrated Precipitator

Single dust removal technology can hardly meet stricter emission standards,and the coupling reinforced electrostatic-fabric integrated precipitator has the advantages of stable and efficient dust removal performance and low operation cost,which is one of the prospective devices for ultra-low dust emission.The dust removal performance of coupling electric bag filter are investigated by a combination of experimental and theoretical methods,and develop a efficiency prediction model.The results can provide theoretical support for the operation,optimization and efficiency prediction of the dust collector.The main research work and conclusions are as follows:Experiment has been carried based on the coupling reinforced electrostatic-fabric integrated precipitator experimental system to investigate the influence of particle characteristics fly ash characteristics,dust collector structure,operating conditions on the removal efficiency of dust collector.The dust removal efficiency of dust collector increases as specific resistance and particle water content increases within certain range.However,the optimization effect turns to be worse when water content larger than 0.65%.Furthermore,the removal efficiency of coupling reinforced electrostatic-fabric integrated precipitator increases with voltage,and the performance is optimal when the applied voltage is-20k V,the overall removal efficiency is 99.98%,the outlet concentration is 2.93mg/m~3,which reaches the ultra-low emission standard.Finally,the performance of electric bag filter is better than that of cloth bag filter and the performance of coupling reinforced electrostatic-fabric integrated precipitator is best under the same conditions.The removal efficiency of coupled electric bag dust collector was 99 and biomass 99.96%and 99.98%respectively.Based on the existing electrostatic and bag dust removal efficiency models,the electrostatic efficiency model between the porous plates and the efficiency model of coupling reinforced electrostatic-fabric integrated precipitator are proposed.The accuracy of the models under different conditions are verified by comparing experimental data.The results show that the accuracy and applicability of the efficiency theoretical model are high within the controllable relative deviation range,efficiency forecast error within 2.00%,which provides theoretical support for the optimization and efficiency prediction of the coupled electric baghouse.