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(chen)(chen)器主要有(you)兩種(zhong)結構(gou)形(xing)式(shi),一(yi)種(zhong)是(shi)使(shi)用(yong)(yong)耐腐(fu)蝕(shi)導(dao)(dao)電(dian)材(cai)料(liao)(可以為導(dao)(dao)電(dian)性(xing)能優良(liang)的的非(fei)金(jin)屬(shu)材(cai)料(liao)或具有(you)耐腐(fu)蝕(shi)特(te)性(xing)的金(jin)屬(shu)材(cai)料(liao))做(zuo)集塵(chen)(chen)極,另(ling)一(yi)種(zhong)是(shi)用(yong)(yong)通(tong)過噴水(shui)或溢流水(shui)形(xing)成導(dao)(dao)電(dian)水(shui)膜,利用(yong)(yong)不(bu)導(dao)(dao)電(dian)的非(fei)金(jin)屬(shu)材(cai)料(liao)做(zuo)集塵(chen)(chen)極。
收塵(chen)原(yuan)理
濕式(shi)(shi)(shi)電(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)器和(he)與干式(shi)(shi)(shi)電(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)器的(de)(de)(de)收塵(chen)(chen)(chen)原理(li)(li)相(xiang)同(tong),都是靠高壓電(dian)(dian)(dian)暈放電(dian)(dian)(dian)使得粉(fen)塵(chen)(chen)(chen)荷(he)電(dian)(dian)(dian),荷(he)電(dian)(dian)(dian)后(hou)的(de)(de)(de)粉(fen)塵(chen)(chen)(chen)在(zai)電(dian)(dian)(dian)場力的(de)(de)(de)作(zuo)用下到(dao)達集(ji)塵(chen)(chen)(chen)板/管。干式(shi)(shi)(shi)電(dian)(dian)(dian)收塵(chen)(chen)(chen)器主要處理(li)(li)含水很(hen)低的(de)(de)(de)干氣體,濕式(shi)(shi)(shi)電(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)器主要處理(li)(li)含水較高乃(nai)至(zhi)飽和(he)的(de)(de)(de)濕氣體。在(zai)對集(ji)塵(chen)(chen)(chen)板/管上(shang)捕集(ji)到(dao)的(de)(de)(de)粉(fen)塵(chen)(chen)(chen)清除(chu)方(fang)式(shi)(shi)(shi)上(shang)WESP與DESP有較大區別,干式(shi)(shi)(shi)電(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)器一般采用機械振(zhen)打或聲波清灰等方(fang)式(shi)(shi)(shi)清除(chu)電(dian)(dian)(dian)極上(shang)的(de)(de)(de)積(ji)灰,而濕式(shi)(shi)(shi)電(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)器則采用定(ding)期(qi)沖洗(xi)的(de)(de)(de)方(fang)式(shi)(shi)(shi),使粉(fen)塵(chen)(chen)(chen)隨著沖刷液的(de)(de)(de)流動而清除(chu)。