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)除(chu)塵器主要(yao)有兩種(zhong)結構形式(shi),一(yi)(yi)種(zhong)是使用耐腐蝕導(dao)電(dian)材料(可以(yi)為導(dao)電(dian)性能優良的的非金屬材料或具有耐腐蝕特性的金屬材料)做集(ji)塵極,另一(yi)(yi)種(zhong)是用通(tong)過噴水(shui)或溢流水(shui)形成導(dao)電(dian)水(shui)膜,利(li)用不導(dao)電(dian)的非金屬材料做集(ji)塵極。
收塵(chen)原理
濕式電(dian)(dian)除(chu)(chu)塵(chen)(chen)器(qi)(qi)和與干(gan)式電(dian)(dian)除(chu)(chu)塵(chen)(chen)器(qi)(qi)的收(shou)塵(chen)(chen)原理相同(tong),都是靠高壓電(dian)(dian)暈放電(dian)(dian)使(shi)得(de)粉(fen)(fen)塵(chen)(chen)荷(he)電(dian)(dian),荷(he)電(dian)(dian)后的粉(fen)(fen)塵(chen)(chen)在電(dian)(dian)場力的作(zuo)用下到達(da)集(ji)(ji)塵(chen)(chen)板/管。干(gan)式電(dian)(dian)收(shou)塵(chen)(chen)器(qi)(qi)主要處理含水(shui)很低(di)的干(gan)氣體(ti),濕式電(dian)(dian)除(chu)(chu)塵(chen)(chen)器(qi)(qi)主要處理含水(shui)較(jiao)高乃至飽和的濕氣體(ti)。在對集(ji)(ji)塵(chen)(chen)板/管上(shang)捕集(ji)(ji)到的粉(fen)(fen)塵(chen)(chen)清除(chu)(chu)方式上(shang)WESP與DESP有(you)較(jiao)大區別(bie),干(gan)式電(dian)(dian)除(chu)(chu)塵(chen)(chen)器(qi)(qi)一般采用機械振打或聲(sheng)波清灰等(deng)方式清除(chu)(chu)電(dian)(dian)極上(shang)的積灰,而(er)濕式電(dian)(dian)除(chu)(chu)塵(chen)(chen)器(qi)(qi)則采用定期(qi)沖(chong)洗的方式,使(shi)粉(fen)(fen)塵(chen)(chen)隨(sui)著沖(chong)刷(shua)液(ye)的流(liu)動而(er)清除(chu)(chu)。