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)除塵器主(zhu)要(yao)有兩種(zhong)結構(gou)形式,一種(zhong)是使(shi)用耐腐(fu)蝕導(dao)電(dian)材(cai)(cai)料(liao)(可以為導(dao)電(dian)性(xing)能優良的的非金(jin)屬材(cai)(cai)料(liao)或具有耐腐(fu)蝕特性(xing)的金(jin)屬材(cai)(cai)料(liao))做(zuo)集(ji)塵極,另一種(zhong)是用通過噴水(shui)(shui)或溢流水(shui)(shui)形成導(dao)電(dian)水(shui)(shui)膜,利用不導(dao)電(dian)的非金(jin)屬材(cai)(cai)料(liao)做(zuo)集(ji)塵極。
收塵原理(li)
濕式(shi)(shi)電(dian)(dian)除塵(chen)(chen)(chen)器(qi)和與干(gan)(gan)式(shi)(shi)電(dian)(dian)除塵(chen)(chen)(chen)器(qi)的(de)(de)(de)收塵(chen)(chen)(chen)原理(li)(li)相(xiang)同,都是靠高壓電(dian)(dian)暈放電(dian)(dian)使(shi)得粉(fen)(fen)(fen)塵(chen)(chen)(chen)荷(he)(he)電(dian)(dian),荷(he)(he)電(dian)(dian)后的(de)(de)(de)粉(fen)(fen)(fen)塵(chen)(chen)(chen)在電(dian)(dian)場力的(de)(de)(de)作用下到(dao)達(da)集(ji)塵(chen)(chen)(chen)板/管。干(gan)(gan)式(shi)(shi)電(dian)(dian)收塵(chen)(chen)(chen)器(qi)主要處(chu)理(li)(li)含水很(hen)低的(de)(de)(de)干(gan)(gan)氣體,濕式(shi)(shi)電(dian)(dian)除塵(chen)(chen)(chen)器(qi)主要處(chu)理(li)(li)含水較(jiao)高乃(nai)至飽和的(de)(de)(de)濕氣體。在對集(ji)塵(chen)(chen)(chen)板/管上捕集(ji)到(dao)的(de)(de)(de)粉(fen)(fen)(fen)塵(chen)(chen)(chen)清除方(fang)式(shi)(shi)上WESP與DESP有(you)較(jiao)大區別,干(gan)(gan)式(shi)(shi)電(dian)(dian)除塵(chen)(chen)(chen)器(qi)一般采用機械振打或聲波清灰等(deng)方(fang)式(shi)(shi)清除電(dian)(dian)極上的(de)(de)(de)積灰,而(er)濕式(shi)(shi)電(dian)(dian)除塵(chen)(chen)(chen)器(qi)則采用定期沖洗的(de)(de)(de)方(fang)式(shi)(shi),使(shi)粉(fen)(fen)(fen)塵(chen)(chen)(chen)隨著沖刷液的(de)(de)(de)流動而(er)清除。