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(shi)式(shi)電除塵器主要(yao)有(you)兩種(zhong)結構形(xing)式(shi),一種(zhong)是使(shi)用耐(nai)腐(fu)蝕(shi)導(dao)電材料(liao)(liao)(liao)(可以為導(dao)電性(xing)能(neng)優良的(de)的(de)非金屬材料(liao)(liao)(liao)或具有(you)耐(nai)腐(fu)蝕(shi)特性(xing)的(de)金屬材料(liao)(liao)(liao))做集塵極(ji),另一種(zhong)是用通過(guo)噴水(shui)或溢流(liu)水(shui)形(xing)成導(dao)電水(shui)膜,利用不導(dao)電的(de)非金屬材料(liao)(liao)(liao)做集塵極(ji)。
收塵原(yuan)理(li)
濕(shi)式(shi)電(dian)(dian)(dian)除(chu)(chu)(chu)塵(chen)(chen)器(qi)(qi)和與干(gan)式(shi)電(dian)(dian)(dian)除(chu)(chu)(chu)塵(chen)(chen)器(qi)(qi)的(de)收塵(chen)(chen)原理(li)相同,都是靠高壓電(dian)(dian)(dian)暈放(fang)電(dian)(dian)(dian)使得粉塵(chen)(chen)荷(he)電(dian)(dian)(dian),荷(he)電(dian)(dian)(dian)后的(de)粉塵(chen)(chen)在電(dian)(dian)(dian)場(chang)力(li)的(de)作用下(xia)到達集塵(chen)(chen)板/管。干(gan)式(shi)電(dian)(dian)(dian)收塵(chen)(chen)器(qi)(qi)主(zhu)要處理(li)含(han)(han)水(shui)很低的(de)干(gan)氣(qi)體(ti),濕(shi)式(shi)電(dian)(dian)(dian)除(chu)(chu)(chu)塵(chen)(chen)器(qi)(qi)主(zhu)要處理(li)含(han)(han)水(shui)較(jiao)高乃至飽和的(de)濕(shi)氣(qi)體(ti)。在對集塵(chen)(chen)板/管上捕集到的(de)粉塵(chen)(chen)清(qing)除(chu)(chu)(chu)方(fang)式(shi)上WESP與DESP有較(jiao)大區別,干(gan)式(shi)電(dian)(dian)(dian)除(chu)(chu)(chu)塵(chen)(chen)器(qi)(qi)一般采用機械(xie)振打或聲(sheng)波清(qing)灰等方(fang)式(shi)清(qing)除(chu)(chu)(chu)電(dian)(dian)(dian)極上的(de)積灰,而濕(shi)式(shi)電(dian)(dian)(dian)除(chu)(chu)(chu)塵(chen)(chen)器(qi)(qi)則(ze)采用定期(qi)沖洗的(de)方(fang)式(shi),使粉塵(chen)(chen)隨著沖刷液的(de)流(liu)動(dong)而清(qing)除(chu)(chu)(chu)。