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(chen)器主要有兩種(zhong)結構形式(shi),一種(zhong)是使用耐腐蝕導(dao)電(dian)材料(可以(yi)為導(dao)電(dian)性(xing)能優良的(de)(de)的(de)(de)非金屬材料或具有耐腐蝕特性(xing)的(de)(de)金屬材料)做(zuo)集(ji)塵(chen)極(ji),另一種(zhong)是用通過(guo)噴水或溢流水形成導(dao)電(dian)水膜(mo),利(li)用不導(dao)電(dian)的(de)(de)非金屬材料做(zuo)集(ji)塵(chen)極(ji)。
收(shou)塵原理
濕式(shi)(shi)電(dian)(dian)(dian)除塵(chen)(chen)(chen)器和(he)與干式(shi)(shi)電(dian)(dian)(dian)除塵(chen)(chen)(chen)器的(de)(de)(de)(de)收塵(chen)(chen)(chen)原理(li)(li)相(xiang)同,都是靠高壓電(dian)(dian)(dian)暈放電(dian)(dian)(dian)使得(de)粉(fen)塵(chen)(chen)(chen)荷電(dian)(dian)(dian),荷電(dian)(dian)(dian)后的(de)(de)(de)(de)粉(fen)塵(chen)(chen)(chen)在(zai)電(dian)(dian)(dian)場力的(de)(de)(de)(de)作(zuo)用(yong)(yong)下到達集塵(chen)(chen)(chen)板/管(guan)。干式(shi)(shi)電(dian)(dian)(dian)收塵(chen)(chen)(chen)器主(zhu)要(yao)處理(li)(li)含水很(hen)低的(de)(de)(de)(de)干氣體(ti),濕式(shi)(shi)電(dian)(dian)(dian)除塵(chen)(chen)(chen)器主(zhu)要(yao)處理(li)(li)含水較(jiao)高乃至飽和(he)的(de)(de)(de)(de)濕氣體(ti)。在(zai)對集塵(chen)(chen)(chen)板/管(guan)上捕(bu)集到的(de)(de)(de)(de)粉(fen)塵(chen)(chen)(chen)清(qing)除方(fang)式(shi)(shi)上WESP與DESP有較(jiao)大區別,干式(shi)(shi)電(dian)(dian)(dian)除塵(chen)(chen)(chen)器一般(ban)采(cai)用(yong)(yong)機械(xie)振打或(huo)聲(sheng)波清(qing)灰等方(fang)式(shi)(shi)清(qing)除電(dian)(dian)(dian)極上的(de)(de)(de)(de)積灰,而濕式(shi)(shi)電(dian)(dian)(dian)除塵(chen)(chen)(chen)器則采(cai)用(yong)(yong)定期沖洗的(de)(de)(de)(de)方(fang)式(shi)(shi),使粉(fen)塵(chen)(chen)(chen)隨著(zhu)沖刷(shua)液的(de)(de)(de)(de)流動而清(qing)除。