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(chen)器主要有兩種結構形式,一種是(shi)使(shi)用(yong)(yong)耐腐蝕(shi)導電(dian)(dian)(dian)材料(liao)(liao)(liao)(可以為(wei)導電(dian)(dian)(dian)性能優良(liang)的的非(fei)金(jin)屬材料(liao)(liao)(liao)或具有耐腐蝕(shi)特性的金(jin)屬材料(liao)(liao)(liao))做(zuo)集(ji)塵(chen)極(ji)(ji),另(ling)一種是(shi)用(yong)(yong)通過(guo)噴水(shui)(shui)或溢(yi)流(liu)水(shui)(shui)形成導電(dian)(dian)(dian)水(shui)(shui)膜(mo),利用(yong)(yong)不(bu)導電(dian)(dian)(dian)的非(fei)金(jin)屬材料(liao)(liao)(liao)做(zuo)集(ji)塵(chen)極(ji)(ji)。
收塵原理
濕(shi)式(shi)(shi)電(dian)(dian)除(chu)(chu)塵(chen)(chen)器和(he)與干(gan)(gan)(gan)(gan)式(shi)(shi)電(dian)(dian)除(chu)(chu)塵(chen)(chen)器的(de)(de)收(shou)塵(chen)(chen)原理(li)(li)相(xiang)同,都是靠高壓電(dian)(dian)暈放電(dian)(dian)使得粉(fen)(fen)塵(chen)(chen)荷(he)電(dian)(dian),荷(he)電(dian)(dian)后(hou)的(de)(de)粉(fen)(fen)塵(chen)(chen)在電(dian)(dian)場力(li)的(de)(de)作用下到達集塵(chen)(chen)板/管(guan)。干(gan)(gan)(gan)(gan)式(shi)(shi)電(dian)(dian)收(shou)塵(chen)(chen)器主要(yao)處理(li)(li)含水很(hen)低的(de)(de)干(gan)(gan)(gan)(gan)氣體(ti),濕(shi)式(shi)(shi)電(dian)(dian)除(chu)(chu)塵(chen)(chen)器主要(yao)處理(li)(li)含水較(jiao)高乃至飽(bao)和(he)的(de)(de)濕(shi)氣體(ti)。在對集塵(chen)(chen)板/管(guan)上(shang)捕集到的(de)(de)粉(fen)(fen)塵(chen)(chen)清(qing)除(chu)(chu)方(fang)(fang)式(shi)(shi)上(shang)WESP與DESP有(you)較(jiao)大區別,干(gan)(gan)(gan)(gan)式(shi)(shi)電(dian)(dian)除(chu)(chu)塵(chen)(chen)器一般采(cai)用機械(xie)振打或聲波清(qing)灰等方(fang)(fang)式(shi)(shi)清(qing)除(chu)(chu)電(dian)(dian)極上(shang)的(de)(de)積(ji)灰,而濕(shi)式(shi)(shi)電(dian)(dian)除(chu)(chu)塵(chen)(chen)器則采(cai)用定期沖洗的(de)(de)方(fang)(fang)式(shi)(shi),使粉(fen)(fen)塵(chen)(chen)隨著沖刷液的(de)(de)流(liu)動(dong)而清(qing)除(chu)(chu)。