| Human being are confronted with the great challenge for the pollution problem in 21 century. In particle pollutant of atmosphere, the harm of PM10 and PM2.5 gets more attention. Electric agglomeration technology is a effective way.Firstly, we include actuality of particle agglomeration technology; We also include briefly the task system, which called PM10 electric agglomeration system.In this article, we use three way to charge and agglomerate stimulant gas: (1)Charged in high-voltage impulse field and agglomerated in high voltage direct field; By task, the relation between charging parameters including impulse peak voltage, voltage output shape, agglomeration time and flux and agglomeration efficiency. (2)Charged in high-voltage impulse field and agglomerated in low voltage alternating field of high frequency; In this task, we chiefly discuss how different voltage value of alternating field, charging electrode and agglomeration time influent agglomeration efficiency; (3)In impulse field with direct base voltage, the dust particles are charged and agglomerated simultaneity; Through changing expend energy per gas volume, charging electrode number, agglomeration time, we get agglomeration efficiency curve. High-voltage impulse can charge fine particle well, agglomeration efficiency of particle diameter 0.5-1.0μm is larger than other particles; Positive impulse and positive-negative impulse have better agglomeration effect on particle. Negative impulse is worst; Flux of stimulant gas Q has very important influence on agglomeration effect. With Q more, charging time and agglomeration time is longer, agglomeration effect is worse.The movement track of charging particles is simulated numerically in this article. We also calculate collision frequency N of the charging particle on the same crossing section in alternating field in one cycling. The conclusion we get is that N directs to Vp' and reverses to f. |
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