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)(dian)除塵器主要有(you)兩種(zhong)(zhong)結構形式,一(yi)種(zhong)(zhong)是使用(yong)耐腐(fu)蝕導(dao)電(dian)(dian)(dian)材料(可以為導(dao)電(dian)(dian)(dian)性能優良(liang)的的非金屬材料或具有(you)耐腐(fu)蝕特性的金屬材料)做集(ji)塵極(ji)(ji),另一(yi)種(zhong)(zhong)是用(yong)通過噴水或溢流水形成導(dao)電(dian)(dian)(dian)水膜,利用(yong)不(bu)導(dao)電(dian)(dian)(dian)的非金屬材料做集(ji)塵極(ji)(ji)。
收塵原理(li)
濕(shi)式(shi)(shi)電(dian)除(chu)塵(chen)(chen)(chen)器和(he)與(yu)干式(shi)(shi)電(dian)除(chu)塵(chen)(chen)(chen)器的(de)收(shou)塵(chen)(chen)(chen)原理(li)(li)相同,都是靠高(gao)(gao)壓電(dian)暈放電(dian)使得粉(fen)塵(chen)(chen)(chen)荷電(dian),荷電(dian)后的(de)粉(fen)塵(chen)(chen)(chen)在電(dian)場力(li)的(de)作用下到(dao)達(da)集塵(chen)(chen)(chen)板(ban)/管。干式(shi)(shi)電(dian)收(shou)塵(chen)(chen)(chen)器主(zhu)要(yao)處(chu)理(li)(li)含水很低的(de)干氣(qi)(qi)體,濕(shi)式(shi)(shi)電(dian)除(chu)塵(chen)(chen)(chen)器主(zhu)要(yao)處(chu)理(li)(li)含水較高(gao)(gao)乃至飽和(he)的(de)濕(shi)氣(qi)(qi)體。在對集塵(chen)(chen)(chen)板(ban)/管上(shang)捕集到(dao)的(de)粉(fen)塵(chen)(chen)(chen)清(qing)(qing)除(chu)方(fang)式(shi)(shi)上(shang)WESP與(yu)DESP有較大區(qu)別,干式(shi)(shi)電(dian)除(chu)塵(chen)(chen)(chen)器一(yi)般采用機械振(zhen)打或聲波清(qing)(qing)灰(hui)等方(fang)式(shi)(shi)清(qing)(qing)除(chu)電(dian)極上(shang)的(de)積灰(hui),而濕(shi)式(shi)(shi)電(dian)除(chu)塵(chen)(chen)(chen)器則(ze)采用定期沖(chong)洗的(de)方(fang)式(shi)(shi),使粉(fen)塵(chen)(chen)(chen)隨著沖(chong)刷液的(de)流動而清(qing)(qing)除(chu)。