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(shi)電除塵器主要有兩種(zhong)結構形式(shi),一種(zhong)是使用耐(nai)腐蝕導(dao)電材料(liao)(可以為導(dao)電性能(neng)優(you)良的(de)(de)的(de)(de)非金屬材料(liao)或具有耐(nai)腐蝕特性的(de)(de)金屬材料(liao))做集塵極,另一種(zhong)是用通(tong)過(guo)噴水(shui)(shui)或溢流(liu)水(shui)(shui)形成導(dao)電水(shui)(shui)膜(mo),利用不導(dao)電的(de)(de)非金屬材料(liao)做集塵極。
收塵原理(li)
濕(shi)式(shi)(shi)電(dian)(dian)(dian)除(chu)(chu)(chu)(chu)塵(chen)(chen)器(qi)(qi)和(he)與干(gan)式(shi)(shi)電(dian)(dian)(dian)除(chu)(chu)(chu)(chu)塵(chen)(chen)器(qi)(qi)的(de)(de)收塵(chen)(chen)原理相同,都是靠高(gao)壓(ya)電(dian)(dian)(dian)暈放電(dian)(dian)(dian)使得(de)粉塵(chen)(chen)荷(he)電(dian)(dian)(dian),荷(he)電(dian)(dian)(dian)后的(de)(de)粉塵(chen)(chen)在電(dian)(dian)(dian)場(chang)力的(de)(de)作用下到達集塵(chen)(chen)板/管(guan)。干(gan)式(shi)(shi)電(dian)(dian)(dian)收塵(chen)(chen)器(qi)(qi)主要(yao)處(chu)理含(han)水很低(di)的(de)(de)干(gan)氣體,濕(shi)式(shi)(shi)電(dian)(dian)(dian)除(chu)(chu)(chu)(chu)塵(chen)(chen)器(qi)(qi)主要(yao)處(chu)理含(han)水較高(gao)乃至飽和(he)的(de)(de)濕(shi)氣體。在對(dui)集塵(chen)(chen)板/管(guan)上捕集到的(de)(de)粉塵(chen)(chen)清(qing)除(chu)(chu)(chu)(chu)方(fang)式(shi)(shi)上WESP與DESP有較大區別,干(gan)式(shi)(shi)電(dian)(dian)(dian)除(chu)(chu)(chu)(chu)塵(chen)(chen)器(qi)(qi)一般采用機械振(zhen)打或聲波(bo)清(qing)灰等方(fang)式(shi)(shi)清(qing)除(chu)(chu)(chu)(chu)電(dian)(dian)(dian)極(ji)上的(de)(de)積(ji)灰,而(er)(er)濕(shi)式(shi)(shi)電(dian)(dian)(dian)除(chu)(chu)(chu)(chu)塵(chen)(chen)器(qi)(qi)則(ze)采用定(ding)期沖洗的(de)(de)方(fang)式(shi)(shi),使粉塵(chen)(chen)隨著沖刷(shua)液的(de)(de)流(liu)動(dong)而(er)(er)清(qing)除(chu)(chu)(chu)(chu)。