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)除塵(chen)器主要有(you)兩種(zhong)結構形式,一種(zhong)是(shi)使用耐腐蝕(shi)導(dao)電(dian)材料(可以為導(dao)電(dian)性能優(you)良的的非(fei)金屬材料或(huo)具(ju)有(you)耐腐蝕(shi)特性的金屬材料)做集塵(chen)極(ji),另一種(zhong)是(shi)用通過噴水或(huo)溢流水形成導(dao)電(dian)水膜,利用不導(dao)電(dian)的非(fei)金屬材料做集塵(chen)極(ji)。
收(shou)塵原理(li)
濕(shi)(shi)(shi)式(shi)(shi)電(dian)(dian)除(chu)塵(chen)器和與干(gan)式(shi)(shi)電(dian)(dian)除(chu)塵(chen)器的收(shou)塵(chen)原理相同(tong),都(dou)是靠高壓電(dian)(dian)暈放電(dian)(dian)使得(de)粉(fen)塵(chen)荷電(dian)(dian),荷電(dian)(dian)后的粉(fen)塵(chen)在電(dian)(dian)場力的作用下到達集(ji)塵(chen)板/管。干(gan)式(shi)(shi)電(dian)(dian)收(shou)塵(chen)器主要(yao)處理含水很低(di)的干(gan)氣(qi)(qi)體(ti)(ti),濕(shi)(shi)(shi)式(shi)(shi)電(dian)(dian)除(chu)塵(chen)器主要(yao)處理含水較高乃(nai)至(zhi)飽和的濕(shi)(shi)(shi)氣(qi)(qi)體(ti)(ti)。在對集(ji)塵(chen)板/管上捕集(ji)到的粉(fen)塵(chen)清除(chu)方式(shi)(shi)上WESP與DESP有較大區(qu)別,干(gan)式(shi)(shi)電(dian)(dian)除(chu)塵(chen)器一般采用機(ji)械振(zhen)打或聲(sheng)波(bo)清灰(hui)等方式(shi)(shi)清除(chu)電(dian)(dian)極上的積灰(hui),而濕(shi)(shi)(shi)式(shi)(shi)電(dian)(dian)除(chu)塵(chen)器則采用定(ding)期沖(chong)洗的方式(shi)(shi),使粉(fen)塵(chen)隨(sui)著沖(chong)刷液的流動而清除(chu)。