| Industrial dust,main component is fine dust particles,seriously pollutes the environment,who has become a difficult problem for traditional dust removal equipment.It is necessary to study more efficient industrial dust treatment methods.This study explores the collaborative treatment of fine particles based on cloud-dedusting technology and chemical agglomeration.The dust in converter steelmaking,refining and sintering processes in iron and steel enterprises,where the particle pollution is serious,is selected as the research object.Firstly,we analyzed the main mechanism of cloud-dedusting technology.Then,we analyzed the effects of inlet concentration,degree of supersaturation and system air volume on the dust removal efficiency of cloud-dedusting system.Under the best conditions,the highest removal efficiency of PM2.5 and PM10 are 90.5% and 86.3%.The results show that reducing the condensation temperature is helpful to further improve the dust removal efficiency;Compared with natural sedimentation,the dust concentration in the dust raising area decreases significantly when the dust removal system works;The average particle size of dust increased by 354% after dust removal;The addition of surfactant further increased the particle size by 28%;Under the coupling agglomeration of pectin and SDBS,the particle size of dust further increased by 15%.The dust removal efficiency of converter dust with good hydrophilicity is higher than that of sintering dust with poor hydrophilicity.Finally,we used the response surface method to design the optimization experiment.Under the optimal working condition,the removal efficiency of PM2.5 in sintering dust was further improved to 82%.The results show that the collaborative treatment technology of cloud-dedusting and chemical agglomeration has a significant effect on dust control in the iron and steel industry,and can provide a simple and efficient new way for the green development of the iron and steel industry.Figure 46;Table 9;Reference 55... |
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