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(you)兩種(zhong)(zhong)結構形式(shi),一種(zhong)(zhong)是(shi)使用耐腐蝕導電材(cai)料(liao)(liao)(可(ke)以(yi)為導電性(xing)能(neng)優良的(de)(de)的(de)(de)非金(jin)屬材(cai)料(liao)(liao)或具(ju)有(you)耐腐蝕特性(xing)的(de)(de)金(jin)屬材(cai)料(liao)(liao))做(zuo)集(ji)塵極(ji),另(ling)一種(zhong)(zhong)是(shi)用通過噴水(shui)或溢流水(shui)形成導電水(shui)膜,利用不導電的(de)(de)非金(jin)屬材(cai)料(liao)(liao)做(zuo)集(ji)塵極(ji)。
收塵原理
濕(shi)式(shi)電(dian)(dian)(dian)除(chu)(chu)塵(chen)(chen)(chen)器和與干(gan)式(shi)電(dian)(dian)(dian)除(chu)(chu)塵(chen)(chen)(chen)器的(de)收塵(chen)(chen)(chen)原(yuan)理(li)(li)相同,都是(shi)靠高壓電(dian)(dian)(dian)暈放(fang)電(dian)(dian)(dian)使(shi)得(de)粉(fen)塵(chen)(chen)(chen)荷電(dian)(dian)(dian),荷電(dian)(dian)(dian)后的(de)粉(fen)塵(chen)(chen)(chen)在電(dian)(dian)(dian)場力的(de)作(zuo)用(yong)下到達集(ji)塵(chen)(chen)(chen)板(ban)/管(guan)。干(gan)式(shi)電(dian)(dian)(dian)收塵(chen)(chen)(chen)器主要處理(li)(li)含水(shui)很低的(de)干(gan)氣(qi)體,濕(shi)式(shi)電(dian)(dian)(dian)除(chu)(chu)塵(chen)(chen)(chen)器主要處理(li)(li)含水(shui)較(jiao)高乃至飽(bao)和的(de)濕(shi)氣(qi)體。在對集(ji)塵(chen)(chen)(chen)板(ban)/管(guan)上捕(bu)集(ji)到的(de)粉(fen)塵(chen)(chen)(chen)清除(chu)(chu)方式(shi)上WESP與DESP有較(jiao)大區別,干(gan)式(shi)電(dian)(dian)(dian)除(chu)(chu)塵(chen)(chen)(chen)器一(yi)般采用(yong)機械(xie)振(zhen)打或聲波清灰(hui)等方式(shi)清除(chu)(chu)電(dian)(dian)(dian)極上的(de)積灰(hui),而濕(shi)式(shi)電(dian)(dian)(dian)除(chu)(chu)塵(chen)(chen)(chen)器則采用(yong)定期沖洗的(de)方式(shi),使(shi)粉(fen)塵(chen)(chen)(chen)隨(sui)著沖刷液的(de)流動而清除(chu)(chu)。