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(chu)塵(chen)(chen)器主要有兩種(zhong)結構形式,一(yi)種(zhong)是使用(yong)耐腐(fu)蝕導電(dian)材料(liao)(可(ke)以為導電(dian)性(xing)能優良的的非(fei)金屬材料(liao)或具(ju)有耐腐(fu)蝕特性(xing)的金屬材料(liao))做集(ji)塵(chen)(chen)極(ji),另(ling)一(yi)種(zhong)是用(yong)通過噴水(shui)(shui)或溢流水(shui)(shui)形成導電(dian)水(shui)(shui)膜,利用(yong)不導電(dian)的非(fei)金屬材料(liao)做集(ji)塵(chen)(chen)極(ji)。
收(shou)塵原理
濕(shi)式(shi)(shi)電(dian)(dian)除(chu)(chu)塵(chen)(chen)器(qi)和與(yu)干(gan)式(shi)(shi)電(dian)(dian)除(chu)(chu)塵(chen)(chen)器(qi)的(de)(de)收塵(chen)(chen)原理(li)相(xiang)同,都(dou)是靠高壓電(dian)(dian)暈放電(dian)(dian)使(shi)得粉(fen)塵(chen)(chen)荷電(dian)(dian),荷電(dian)(dian)后的(de)(de)粉(fen)塵(chen)(chen)在電(dian)(dian)場力(li)的(de)(de)作用(yong)下到達集塵(chen)(chen)板(ban)/管(guan)。干(gan)式(shi)(shi)電(dian)(dian)收塵(chen)(chen)器(qi)主(zhu)要(yao)處理(li)含水很低(di)的(de)(de)干(gan)氣體(ti),濕(shi)式(shi)(shi)電(dian)(dian)除(chu)(chu)塵(chen)(chen)器(qi)主(zhu)要(yao)處理(li)含水較高乃至(zhi)飽和的(de)(de)濕(shi)氣體(ti)。在對集塵(chen)(chen)板(ban)/管(guan)上(shang)捕集到的(de)(de)粉(fen)塵(chen)(chen)清(qing)(qing)除(chu)(chu)方式(shi)(shi)上(shang)WESP與(yu)DESP有較大(da)區別,干(gan)式(shi)(shi)電(dian)(dian)除(chu)(chu)塵(chen)(chen)器(qi)一般采用(yong)機械(xie)振打或聲(sheng)波清(qing)(qing)灰等方式(shi)(shi)清(qing)(qing)除(chu)(chu)電(dian)(dian)極上(shang)的(de)(de)積灰,而濕(shi)式(shi)(shi)電(dian)(dian)除(chu)(chu)塵(chen)(chen)器(qi)則采用(yong)定(ding)期沖(chong)洗的(de)(de)方式(shi)(shi),使(shi)粉(fen)塵(chen)(chen)隨(sui)著沖(chong)刷液的(de)(de)流動而清(qing)(qing)除(chu)(chu)。