濕式電除塵器是一種用來處理含微量粉塵和微顆粒的新除塵設備,主要用來除去含濕氣體中的塵、酸霧、水滴、氣溶膠、臭味、PM2.5等有害物質,是治理大氣粉塵污染的理想設備。
濕式電除塵器通常簡稱WESP,與干式電除塵器的除塵基本原理相同,要經歷荷電、收集和清灰三個階段。
濕式電(dian)(dian)(dian)除塵器主(zhu)要有兩種結(jie)構形(xing)式,一種是使用(yong)耐(nai)腐蝕導(dao)電(dian)(dian)(dian)材(cai)料(可以為導(dao)電(dian)(dian)(dian)性能優良的(de)的(de)非金(jin)屬(shu)材(cai)料或(huo)具(ju)有耐(nai)腐蝕特性的(de)金(jin)屬(shu)材(cai)料)做集塵極,另一種是用(yong)通過噴水或(huo)溢流水形(xing)成導(dao)電(dian)(dian)(dian)水膜,利(li)用(yong)不導(dao)電(dian)(dian)(dian)的(de)非金(jin)屬(shu)材(cai)料做集塵極。
收塵(chen)原理(li)
濕式(shi)電(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)(chen)器和與干(gan)(gan)(gan)式(shi)電(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)(chen)器的(de)(de)收塵(chen)(chen)(chen)(chen)原理相同(tong),都是靠(kao)高壓(ya)電(dian)(dian)(dian)暈放電(dian)(dian)(dian)使(shi)得粉塵(chen)(chen)(chen)(chen)荷電(dian)(dian)(dian),荷電(dian)(dian)(dian)后(hou)的(de)(de)粉塵(chen)(chen)(chen)(chen)在電(dian)(dian)(dian)場力(li)的(de)(de)作用(yong)下到達集塵(chen)(chen)(chen)(chen)板/管(guan)。干(gan)(gan)(gan)式(shi)電(dian)(dian)(dian)收塵(chen)(chen)(chen)(chen)器主要處理含水很低(di)的(de)(de)干(gan)(gan)(gan)氣體,濕式(shi)電(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)(chen)器主要處理含水較高乃至飽和的(de)(de)濕氣體。在對集塵(chen)(chen)(chen)(chen)板/管(guan)上捕集到的(de)(de)粉塵(chen)(chen)(chen)(chen)清除(chu)方式(shi)上WESP與DESP有較大區別(bie),干(gan)(gan)(gan)式(shi)電(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)(chen)器一般采用(yong)機(ji)械振打或(huo)聲波清灰(hui)等(deng)方式(shi)清除(chu)電(dian)(dian)(dian)極(ji)上的(de)(de)積(ji)灰(hui),而濕式(shi)電(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)(chen)器則采用(yong)定(ding)期沖洗(xi)的(de)(de)方式(shi),使(shi)粉塵(chen)(chen)(chen)(chen)隨(sui)著沖刷液的(de)(de)流動(dong)而清除(chu)。