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)(dian)(dian)(dian)除(chu)塵(chen)器主(zhu)要有兩種(zhong)結構形式(shi),一種(zhong)是使用(yong)(yong)耐腐(fu)蝕導電(dian)(dian)(dian)(dian)材料(liao)(可(ke)以(yi)為(wei)導電(dian)(dian)(dian)(dian)性能優良的(de)的(de)非金(jin)屬(shu)(shu)材料(liao)或具有耐腐(fu)蝕特性的(de)金(jin)屬(shu)(shu)材料(liao))做集(ji)塵(chen)極(ji),另(ling)一種(zhong)是用(yong)(yong)通過噴水或溢流水形成導電(dian)(dian)(dian)(dian)水膜,利用(yong)(yong)不(bu)導電(dian)(dian)(dian)(dian)的(de)非金(jin)屬(shu)(shu)材料(liao)做集(ji)塵(chen)極(ji)。
收塵原理
濕(shi)(shi)式電(dian)(dian)除(chu)(chu)塵器和(he)與干(gan)式電(dian)(dian)除(chu)(chu)塵器的(de)(de)收(shou)塵原理相同,都是靠(kao)高壓電(dian)(dian)暈放電(dian)(dian)使得粉塵荷電(dian)(dian),荷電(dian)(dian)后的(de)(de)粉塵在電(dian)(dian)場力(li)的(de)(de)作(zuo)用下到達集塵板(ban)(ban)/管。干(gan)式電(dian)(dian)收(shou)塵器主(zhu)要處(chu)理含水很低的(de)(de)干(gan)氣體(ti),濕(shi)(shi)式電(dian)(dian)除(chu)(chu)塵器主(zhu)要處(chu)理含水較(jiao)高乃(nai)至飽和(he)的(de)(de)濕(shi)(shi)氣體(ti)。在對集塵板(ban)(ban)/管上(shang)捕集到的(de)(de)粉塵清除(chu)(chu)方式上(shang)WESP與DESP有較(jiao)大區別,干(gan)式電(dian)(dian)除(chu)(chu)塵器一般采用機(ji)械振(zhen)打(da)或聲波清灰(hui)等方式清除(chu)(chu)電(dian)(dian)極上(shang)的(de)(de)積灰(hui),而濕(shi)(shi)式電(dian)(dian)除(chu)(chu)塵器則采用定期沖洗的(de)(de)方式,使粉塵隨著(zhu)沖刷液的(de)(de)流動而清除(chu)(chu)。