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)式電(dian)(dian)(dian)除(chu)塵器主(zhu)要有(you)兩種(zhong)結構形式,一種(zhong)是使用耐腐(fu)蝕導電(dian)(dian)(dian)材(cai)料(liao)(liao)(可以為導電(dian)(dian)(dian)性(xing)能優良的(de)的(de)非(fei)金屬(shu)材(cai)料(liao)(liao)或具有(you)耐腐(fu)蝕特性(xing)的(de)金屬(shu)材(cai)料(liao)(liao))做集塵極(ji),另(ling)一種(zhong)是用通過噴(pen)水或溢流水形成導電(dian)(dian)(dian)水膜,利用不導電(dian)(dian)(dian)的(de)非(fei)金屬(shu)材(cai)料(liao)(liao)做集塵極(ji)。
收塵原理
濕(shi)式(shi)(shi)電(dian)除(chu)(chu)塵(chen)(chen)(chen)(chen)器(qi)(qi)和與(yu)干式(shi)(shi)電(dian)除(chu)(chu)塵(chen)(chen)(chen)(chen)器(qi)(qi)的(de)(de)收塵(chen)(chen)(chen)(chen)原(yuan)理(li)(li)相同,都是靠高壓電(dian)暈放(fang)電(dian)使(shi)得粉(fen)塵(chen)(chen)(chen)(chen)荷電(dian),荷電(dian)后(hou)的(de)(de)粉(fen)塵(chen)(chen)(chen)(chen)在電(dian)場力的(de)(de)作用(yong)下到(dao)(dao)達(da)集(ji)塵(chen)(chen)(chen)(chen)板(ban)(ban)/管。干式(shi)(shi)電(dian)收塵(chen)(chen)(chen)(chen)器(qi)(qi)主要處理(li)(li)含(han)水(shui)很低的(de)(de)干氣(qi)體(ti),濕(shi)式(shi)(shi)電(dian)除(chu)(chu)塵(chen)(chen)(chen)(chen)器(qi)(qi)主要處理(li)(li)含(han)水(shui)較高乃至飽(bao)和的(de)(de)濕(shi)氣(qi)體(ti)。在對集(ji)塵(chen)(chen)(chen)(chen)板(ban)(ban)/管上捕集(ji)到(dao)(dao)的(de)(de)粉(fen)塵(chen)(chen)(chen)(chen)清(qing)除(chu)(chu)方(fang)式(shi)(shi)上WESP與(yu)DESP有較大(da)區(qu)別,干式(shi)(shi)電(dian)除(chu)(chu)塵(chen)(chen)(chen)(chen)器(qi)(qi)一般采用(yong)機械振打或聲波清(qing)灰(hui)等方(fang)式(shi)(shi)清(qing)除(chu)(chu)電(dian)極上的(de)(de)積灰(hui),而(er)濕(shi)式(shi)(shi)電(dian)除(chu)(chu)塵(chen)(chen)(chen)(chen)器(qi)(qi)則(ze)采用(yong)定期沖洗的(de)(de)方(fang)式(shi)(shi),使(shi)粉(fen)塵(chen)(chen)(chen)(chen)隨著(zhu)沖刷(shua)液(ye)的(de)(de)流(liu)動而(er)清(qing)除(chu)(chu)。