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)除(chu)塵(chen)器主要(yao)有(you)兩種結(jie)構(gou)形式,一種是(shi)使用(yong)耐腐蝕導(dao)電(dian)材料(liao)(liao)(liao)(可(ke)以(yi)為導(dao)電(dian)性(xing)能優(you)良的(de)的(de)非金屬(shu)材料(liao)(liao)(liao)或具(ju)有(you)耐腐蝕特性(xing)的(de)金屬(shu)材料(liao)(liao)(liao))做(zuo)集塵(chen)極,另一種是(shi)用(yong)通過噴水或溢流(liu)水形成導(dao)電(dian)水膜,利用(yong)不(bu)導(dao)電(dian)的(de)非金屬(shu)材料(liao)(liao)(liao)做(zuo)集塵(chen)極。
收塵原理
濕(shi)式(shi)電(dian)(dian)除(chu)(chu)塵(chen)(chen)(chen)(chen)(chen)器(qi)和(he)與干(gan)(gan)式(shi)電(dian)(dian)除(chu)(chu)塵(chen)(chen)(chen)(chen)(chen)器(qi)的(de)收塵(chen)(chen)(chen)(chen)(chen)原理(li)相同(tong),都是靠高壓電(dian)(dian)暈放電(dian)(dian)使得粉(fen)塵(chen)(chen)(chen)(chen)(chen)荷電(dian)(dian),荷電(dian)(dian)后的(de)粉(fen)塵(chen)(chen)(chen)(chen)(chen)在電(dian)(dian)場力的(de)作用下到(dao)達集塵(chen)(chen)(chen)(chen)(chen)板/管。干(gan)(gan)式(shi)電(dian)(dian)收塵(chen)(chen)(chen)(chen)(chen)器(qi)主(zhu)要處理(li)含(han)水(shui)很(hen)低(di)的(de)干(gan)(gan)氣體(ti),濕(shi)式(shi)電(dian)(dian)除(chu)(chu)塵(chen)(chen)(chen)(chen)(chen)器(qi)主(zhu)要處理(li)含(han)水(shui)較高乃至飽和(he)的(de)濕(shi)氣體(ti)。在對集塵(chen)(chen)(chen)(chen)(chen)板/管上(shang)捕集到(dao)的(de)粉(fen)塵(chen)(chen)(chen)(chen)(chen)清除(chu)(chu)方(fang)式(shi)上(shang)WESP與DESP有較大區別(bie),干(gan)(gan)式(shi)電(dian)(dian)除(chu)(chu)塵(chen)(chen)(chen)(chen)(chen)器(qi)一般(ban)采用機械振打或聲波清灰等方(fang)式(shi)清除(chu)(chu)電(dian)(dian)極上(shang)的(de)積灰,而濕(shi)式(shi)電(dian)(dian)除(chu)(chu)塵(chen)(chen)(chen)(chen)(chen)器(qi)則(ze)采用定期沖洗的(de)方(fang)式(shi),使粉(fen)塵(chen)(chen)(chen)(chen)(chen)隨著沖刷液的(de)流(liu)動而清除(chu)(chu)。