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)(dian)除塵器主要有(you)兩(liang)種(zhong)結構(gou)形(xing)式,一種(zhong)是使用(yong)(yong)耐(nai)腐(fu)(fu)蝕導電(dian)(dian)材(cai)料(liao)(可以為導電(dian)(dian)性能優良的的非金(jin)屬材(cai)料(liao)或(huo)具有(you)耐(nai)腐(fu)(fu)蝕特性的金(jin)屬材(cai)料(liao))做(zuo)集(ji)塵極,另一種(zhong)是用(yong)(yong)通過噴水(shui)(shui)或(huo)溢(yi)流(liu)水(shui)(shui)形(xing)成(cheng)導電(dian)(dian)水(shui)(shui)膜,利用(yong)(yong)不(bu)導電(dian)(dian)的非金(jin)屬材(cai)料(liao)做(zuo)集(ji)塵極。
收塵原(yuan)理(li)
濕(shi)式(shi)電(dian)(dian)除(chu)(chu)(chu)塵(chen)器和與(yu)干式(shi)電(dian)(dian)除(chu)(chu)(chu)塵(chen)器的(de)(de)(de)收塵(chen)原理相(xiang)同,都是靠(kao)高(gao)(gao)壓電(dian)(dian)暈放(fang)電(dian)(dian)使(shi)得(de)粉(fen)(fen)塵(chen)荷電(dian)(dian),荷電(dian)(dian)后的(de)(de)(de)粉(fen)(fen)塵(chen)在電(dian)(dian)場力的(de)(de)(de)作用(yong)下到達集塵(chen)板/管。干式(shi)電(dian)(dian)收塵(chen)器主(zhu)要處(chu)理含水很低的(de)(de)(de)干氣體(ti),濕(shi)式(shi)電(dian)(dian)除(chu)(chu)(chu)塵(chen)器主(zhu)要處(chu)理含水較高(gao)(gao)乃至飽和的(de)(de)(de)濕(shi)氣體(ti)。在對集塵(chen)板/管上(shang)捕集到的(de)(de)(de)粉(fen)(fen)塵(chen)清(qing)除(chu)(chu)(chu)方(fang)式(shi)上(shang)WESP與(yu)DESP有較大區別,干式(shi)電(dian)(dian)除(chu)(chu)(chu)塵(chen)器一般采(cai)用(yong)機械(xie)振打(da)或聲波清(qing)灰等方(fang)式(shi)清(qing)除(chu)(chu)(chu)電(dian)(dian)極上(shang)的(de)(de)(de)積灰,而濕(shi)式(shi)電(dian)(dian)除(chu)(chu)(chu)塵(chen)器則采(cai)用(yong)定(ding)期沖(chong)洗的(de)(de)(de)方(fang)式(shi),使(shi)粉(fen)(fen)塵(chen)隨著(zhu)沖(chong)刷液的(de)(de)(de)流(liu)動(dong)而清(qing)除(chu)(chu)(chu)。