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(shi)式(shi)電(dian)除(chu)塵器(qi)主要有(you)兩種結構形式(shi),一種是(shi)使用耐腐(fu)蝕導電(dian)材料(liao)(可以為導電(dian)性(xing)能優良的(de)的(de)非金(jin)屬(shu)材料(liao)或(huo)具有(you)耐腐(fu)蝕特性(xing)的(de)金(jin)屬(shu)材料(liao))做集(ji)塵極,另(ling)一種是(shi)用通過噴水或(huo)溢流水形成(cheng)導電(dian)水膜,利用不(bu)導電(dian)的(de)非金(jin)屬(shu)材料(liao)做集(ji)塵極。
收塵原(yuan)理
濕(shi)式(shi)(shi)(shi)電(dian)(dian)除(chu)(chu)塵(chen)(chen)器(qi)(qi)(qi)和與干式(shi)(shi)(shi)電(dian)(dian)除(chu)(chu)塵(chen)(chen)器(qi)(qi)(qi)的收塵(chen)(chen)原理相同,都是靠高壓電(dian)(dian)暈放(fang)電(dian)(dian)使得粉(fen)塵(chen)(chen)荷(he)電(dian)(dian),荷(he)電(dian)(dian)后的粉(fen)塵(chen)(chen)在電(dian)(dian)場力的作(zuo)用(yong)下(xia)到達集(ji)塵(chen)(chen)板/管。干式(shi)(shi)(shi)電(dian)(dian)收塵(chen)(chen)器(qi)(qi)(qi)主要處理含水(shui)很低的干氣體(ti),濕(shi)式(shi)(shi)(shi)電(dian)(dian)除(chu)(chu)塵(chen)(chen)器(qi)(qi)(qi)主要處理含水(shui)較(jiao)(jiao)高乃至飽和的濕(shi)氣體(ti)。在對集(ji)塵(chen)(chen)板/管上(shang)捕集(ji)到的粉(fen)塵(chen)(chen)清(qing)除(chu)(chu)方式(shi)(shi)(shi)上(shang)WESP與DESP有較(jiao)(jiao)大區別(bie),干式(shi)(shi)(shi)電(dian)(dian)除(chu)(chu)塵(chen)(chen)器(qi)(qi)(qi)一般(ban)采用(yong)機械振打或聲波清(qing)灰等方式(shi)(shi)(shi)清(qing)除(chu)(chu)電(dian)(dian)極上(shang)的積灰,而濕(shi)式(shi)(shi)(shi)電(dian)(dian)除(chu)(chu)塵(chen)(chen)器(qi)(qi)(qi)則采用(yong)定期沖(chong)洗的方式(shi)(shi)(shi),使粉(fen)塵(chen)(chen)隨(sui)著沖(chong)刷液的流動而清(qing)除(chu)(chu)。