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)除塵器主要有兩種結構形式(shi),一種是(shi)(shi)使用(yong)耐腐蝕導電(dian)材(cai)料(liao)(可(ke)以為導電(dian)性能優良的的非(fei)金(jin)屬(shu)(shu)材(cai)料(liao)或具有耐腐蝕特性的金(jin)屬(shu)(shu)材(cai)料(liao))做集(ji)塵極(ji)(ji),另一種是(shi)(shi)用(yong)通(tong)過噴(pen)水(shui)或溢(yi)流水(shui)形成(cheng)導電(dian)水(shui)膜,利用(yong)不導電(dian)的非(fei)金(jin)屬(shu)(shu)材(cai)料(liao)做集(ji)塵極(ji)(ji)。
收(shou)塵(chen)原理(li)
濕(shi)式(shi)電(dian)除(chu)塵(chen)(chen)(chen)(chen)器(qi)和與干式(shi)電(dian)除(chu)塵(chen)(chen)(chen)(chen)器(qi)的收(shou)塵(chen)(chen)(chen)(chen)原理相同,都是靠(kao)高壓(ya)電(dian)暈放電(dian)使得(de)粉(fen)塵(chen)(chen)(chen)(chen)荷(he)電(dian),荷(he)電(dian)后的粉(fen)塵(chen)(chen)(chen)(chen)在(zai)電(dian)場力(li)的作用(yong)下到達集塵(chen)(chen)(chen)(chen)板/管。干式(shi)電(dian)收(shou)塵(chen)(chen)(chen)(chen)器(qi)主要處(chu)理含(han)水(shui)很低的干氣體(ti),濕(shi)式(shi)電(dian)除(chu)塵(chen)(chen)(chen)(chen)器(qi)主要處(chu)理含(han)水(shui)較高乃至飽和的濕(shi)氣體(ti)。在(zai)對集塵(chen)(chen)(chen)(chen)板/管上(shang)捕集到的粉(fen)塵(chen)(chen)(chen)(chen)清除(chu)方(fang)(fang)式(shi)上(shang)WESP與DESP有較大區別(bie),干式(shi)電(dian)除(chu)塵(chen)(chen)(chen)(chen)器(qi)一般采用(yong)機械振打或(huo)聲波清灰等(deng)方(fang)(fang)式(shi)清除(chu)電(dian)極上(shang)的積(ji)灰,而濕(shi)式(shi)電(dian)除(chu)塵(chen)(chen)(chen)(chen)器(qi)則采用(yong)定期沖洗(xi)的方(fang)(fang)式(shi),使粉(fen)塵(chen)(chen)(chen)(chen)隨(sui)著沖刷液的流動而清除(chu)。