| The proposal of the Blue Sky Defense War has increasingly strict control and emission of fine dust.The electrostatic cyclone water film dust removal technology is proposed after referring to the advantages of different dust removal technologies.This paper analyzes the dust removal mechanism of electrostatic cyclone water film dust removal equipment through theoretical analysis,focusing on the optimization of its dust removal characteristics and configuration characteristics and configuration.First,the system is introduced;secondly,the wettability and particle size distribution of the dust are measured;then the arrangement of the measurement points of the dust removal system and the measurement of related parameters are introduced and measured.The dry resistance and air leakage rate of the dust removal system are both Meet the requirements;theoretically analyze the dust removal mechanism of the electrostatic cyclone water film equipment,analyze the charging mechanism of the fog drop and the water mist dust catching mechanism.Experiments on the spray characteristics of nozzles are carried out,and the uniform distribution performance of the dust-removing water film under the action of each nozzle combination is obtained.It is concluded that the fan is turned on and it is more conducive to the uniform distribution of the water film,and the widened blowing nozzle The uniform distribution performance of the tube is the best,and the arrangement of the fiber web on the wall of the cylinder can optimize the conclusion that the water film is uniformly distributed.Regarding the relationship between the flow rate per unit area and the spray pressure of the selected widened blowing nozzles,solid cone nozzles with 1mm aperture and combined nozzles,the greater the spray pressure,the greater the flow per unit area;for the solid cones with 1mm aperture The relationship between the atomization angle,average spray particle size and spray pressure of the shaped nozzle was tested by experiments;the selected three groups of nozzles were selected by changing the inlet wind speed,the spray volume per unit area and the electrostatic voltage to select each factor.After selecting the optimal level range,an orthogonal experiment table will be established.Orthogonal experiments are used to determine the relative ranking of the influencing factors of the dust removal efficiency of the dust removal system under the action of different nozzle types,which is inlet wind speed>static voltage>spray volume per unit area.The best parameters of the dust removal system under the action of the widened blowing nozzle are the inlet wind speed of 12.03m/s,the unit area flow rate of 1.14 L/(m~2·s),and the electrostatic voltage of 45k V.The best parameters of the dust removal system under the action of the 1mm aperture solid cone nozzle are the inlet wind speed of 12.03m/s,the unit area flow rate of0.33L/(m~2·s),and the electrostatic voltage of 25k V.The optimal parameters of the dust removal system under the action of the combined nozzle are the inlet wind speed of 12.03m/s,the unit area flow rate of 1.02 L/(m~2·s),and the electrostatic voltage of 45k V.Under the best configuration,it is determined that the best nozzle type for this dust removal system is the combined nozzle.From the dust-catching performance experiment of the cleaning water film along the way,it is concluded that with the increase of the water film outflow distance,the amount of dust particles captured by the water film increases.The collection capacity accounts for about 60%of the total collection capacity of the entire equipment;the dust removal efficiency of the system first increases with the increase of the average dust concentration at the entrance,and the dust removal efficiency is the highest when it reaches 3.82 g/m~3.When the dust concentration rises again,the dust removal efficiency gradually increases Decrease;under different inlet wind speeds,the combined dust removal method of cyclone+water film+electrostatic is more efficient than single or other combined methods.The highest efficiency of general dust collection can reach 98.75%when the inlet wind speed is 12.03m/s;When the inlet wind speed is 7.21m/s,the collection efficiency of fine dust?5?m can reach 86.12%.Theories and experiments show that the low-resistance venturi vibrating grid water film dust removal technology has high efficiency and low resistance,can effectively treat fine dust,and the dust collector has a simple structure and low cost,and it has certain competitiveness in future dust removal. |
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