Acoustic-chemical Agglomeration Of Fine Particles Removal Technology Research

It is difficult to capture the fine particles with particle size below 10 ?m in industrial flue gas by electrostatic precipitator,and the fine dust in converter flue gas is the research object.The sonic-chemical agglomeration method was used to study the factors affecting the agglomeration of particulate matter.Correct flocculant type,different concentration and surface activity expand chemical experiment;correct sound frequency and dust residence time expand chemical experiment;design orthogonal test to get the best combination of “sonic-chemical”composite agglomeration,the particle size and surface pore structure of different mechanisms were compared and analyzed.In the chemical agglomeration experiment,the fine particles of 0.1 g/L and the surfactant-added polyacrylamide(PAM)had the best agglomeration effect and the peak particle size of the dust reached 40.582 ?m.In the acoustic agglomeration experiment,the particles were at 33 k Hz.The agglomeration effect is best when the residence time reaches 15 s in the sound field,and the peak particle size can reach 37.694 ?m.In the compound agglomeration experiment,when the fine particles are at the frequency of 33 k Hz,the residence time is 15 s,while spraying0.1 g/L and adding surfactant The agglomeration effect of the flocculant of SDBS PAM is the best.The peak particle size is increased from the original 0.626 to 43.593 ?m,and the dust removal efficiency can reach 95.5%.Comparing the pore structure of the dust surface before and after agglomeration,correct.removal of particulate matter is beneficial that the larger the particle size and the more developed the pore structure.The effects of the three mechanisms are: agglomeration,chemical agglomeration and sonic agglomeration.The sonic-chemical agglomeration synergistic treatment of particulate matter dust removal technology can more effectively improve the efficiency of capture and removal of particulate matter by conventional dust removal equipment,and control the emission of fine dust in industrial flue gas.Figure 31;Table 13;Reference 63.