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(dian)(dian)除(chu)塵器主要有兩種結構形式(shi),一種是(shi)使用(yong)耐(nai)腐蝕導(dao)電(dian)(dian)材料(可(ke)以為導(dao)電(dian)(dian)性(xing)能(neng)優(you)良(liang)的的非金屬(shu)材料或具有耐(nai)腐蝕特性(xing)的金屬(shu)材料)做集(ji)塵極,另一種是(shi)用(yong)通過噴水(shui)或溢(yi)流水(shui)形成導(dao)電(dian)(dian)水(shui)膜,利用(yong)不導(dao)電(dian)(dian)的非金屬(shu)材料做集(ji)塵極。
收(shou)塵(chen)原理
濕(shi)式(shi)電(dian)(dian)除(chu)塵(chen)(chen)(chen)(chen)器和與干(gan)式(shi)電(dian)(dian)除(chu)塵(chen)(chen)(chen)(chen)器的(de)(de)(de)收(shou)塵(chen)(chen)(chen)(chen)原理相同,都是靠高壓(ya)電(dian)(dian)暈放(fang)電(dian)(dian)使得粉(fen)塵(chen)(chen)(chen)(chen)荷電(dian)(dian),荷電(dian)(dian)后的(de)(de)(de)粉(fen)塵(chen)(chen)(chen)(chen)在電(dian)(dian)場力(li)的(de)(de)(de)作(zuo)用(yong)下到達集(ji)塵(chen)(chen)(chen)(chen)板(ban)/管。干(gan)式(shi)電(dian)(dian)收(shou)塵(chen)(chen)(chen)(chen)器主要處理含(han)水很低的(de)(de)(de)干(gan)氣體,濕(shi)式(shi)電(dian)(dian)除(chu)塵(chen)(chen)(chen)(chen)器主要處理含(han)水較(jiao)高乃至(zhi)飽(bao)和的(de)(de)(de)濕(shi)氣體。在對集(ji)塵(chen)(chen)(chen)(chen)板(ban)/管上捕集(ji)到的(de)(de)(de)粉(fen)塵(chen)(chen)(chen)(chen)清除(chu)方(fang)(fang)式(shi)上WESP與DESP有(you)較(jiao)大區別,干(gan)式(shi)電(dian)(dian)除(chu)塵(chen)(chen)(chen)(chen)器一(yi)般采用(yong)機(ji)械(xie)振打或聲(sheng)波清灰等方(fang)(fang)式(shi)清除(chu)電(dian)(dian)極上的(de)(de)(de)積灰,而濕(shi)式(shi)電(dian)(dian)除(chu)塵(chen)(chen)(chen)(chen)器則(ze)采用(yong)定期沖洗的(de)(de)(de)方(fang)(fang)式(shi),使粉(fen)塵(chen)(chen)(chen)(chen)隨著沖刷液的(de)(de)(de)流動而清除(chu)。