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(chen)器主要有兩種結構(gou)形(xing)式,一種是使用(yong)耐腐蝕(shi)導(dao)(dao)(dao)電(dian)材料(liao)(liao)(可以為導(dao)(dao)(dao)電(dian)性能優良的(de)的(de)非(fei)金屬(shu)材料(liao)(liao)或(huo)具有耐腐蝕(shi)特(te)性的(de)金屬(shu)材料(liao)(liao))做(zuo)集(ji)塵(chen)極,另一種是用(yong)通(tong)過噴水或(huo)溢流(liu)水形(xing)成導(dao)(dao)(dao)電(dian)水膜,利用(yong)不導(dao)(dao)(dao)電(dian)的(de)非(fei)金屬(shu)材料(liao)(liao)做(zuo)集(ji)塵(chen)極。
收塵原(yuan)理
濕(shi)(shi)式(shi)(shi)電(dian)除(chu)塵(chen)(chen)(chen)(chen)(chen)器和(he)與干式(shi)(shi)電(dian)除(chu)塵(chen)(chen)(chen)(chen)(chen)器的(de)(de)收(shou)塵(chen)(chen)(chen)(chen)(chen)原理相同,都是靠(kao)高壓電(dian)暈放電(dian)使(shi)(shi)得粉塵(chen)(chen)(chen)(chen)(chen)荷電(dian),荷電(dian)后的(de)(de)粉塵(chen)(chen)(chen)(chen)(chen)在(zai)電(dian)場力(li)的(de)(de)作(zuo)用下(xia)到(dao)達集塵(chen)(chen)(chen)(chen)(chen)板(ban)/管。干式(shi)(shi)電(dian)收(shou)塵(chen)(chen)(chen)(chen)(chen)器主要(yao)(yao)處理含水很(hen)低(di)的(de)(de)干氣(qi)體(ti),濕(shi)(shi)式(shi)(shi)電(dian)除(chu)塵(chen)(chen)(chen)(chen)(chen)器主要(yao)(yao)處理含水較(jiao)高乃至飽和(he)的(de)(de)濕(shi)(shi)氣(qi)體(ti)。在(zai)對集塵(chen)(chen)(chen)(chen)(chen)板(ban)/管上(shang)捕集到(dao)的(de)(de)粉塵(chen)(chen)(chen)(chen)(chen)清除(chu)方(fang)式(shi)(shi)上(shang)WESP與DESP有較(jiao)大區別,干式(shi)(shi)電(dian)除(chu)塵(chen)(chen)(chen)(chen)(chen)器一般采用機械(xie)振打(da)或聲波清灰(hui)等方(fang)式(shi)(shi)清除(chu)電(dian)極上(shang)的(de)(de)積灰(hui),而(er)(er)濕(shi)(shi)式(shi)(shi)電(dian)除(chu)塵(chen)(chen)(chen)(chen)(chen)器則采用定期沖洗的(de)(de)方(fang)式(shi)(shi),使(shi)(shi)粉塵(chen)(chen)(chen)(chen)(chen)隨著沖刷液的(de)(de)流動而(er)(er)清除(chu)。