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)除塵(chen)器主要有兩種(zhong)結(jie)構形式(shi),一種(zhong)是使用耐腐蝕導電(dian)(dian)(dian)材料(liao)(可以為導電(dian)(dian)(dian)性能優(you)良的(de)的(de)非金屬材料(liao)或具有耐腐蝕特性的(de)金屬材料(liao))做(zuo)集塵(chen)極,另一種(zhong)是用通(tong)過噴水或溢流水形成導電(dian)(dian)(dian)水膜,利用不導電(dian)(dian)(dian)的(de)非金屬材料(liao)做(zuo)集塵(chen)極。
收塵原理(li)
濕(shi)式(shi)(shi)電(dian)除(chu)(chu)塵(chen)(chen)(chen)(chen)器(qi)和與(yu)干(gan)(gan)式(shi)(shi)電(dian)除(chu)(chu)塵(chen)(chen)(chen)(chen)器(qi)的(de)(de)(de)(de)收塵(chen)(chen)(chen)(chen)原理相(xiang)同,都(dou)是靠(kao)高(gao)壓電(dian)暈放電(dian)使(shi)得粉(fen)(fen)塵(chen)(chen)(chen)(chen)荷電(dian),荷電(dian)后的(de)(de)(de)(de)粉(fen)(fen)塵(chen)(chen)(chen)(chen)在電(dian)場力的(de)(de)(de)(de)作用(yong)下到(dao)達(da)集塵(chen)(chen)(chen)(chen)板/管(guan)。干(gan)(gan)式(shi)(shi)電(dian)收塵(chen)(chen)(chen)(chen)器(qi)主要(yao)處理含水很低的(de)(de)(de)(de)干(gan)(gan)氣(qi)體,濕(shi)式(shi)(shi)電(dian)除(chu)(chu)塵(chen)(chen)(chen)(chen)器(qi)主要(yao)處理含水較高(gao)乃(nai)至飽(bao)和的(de)(de)(de)(de)濕(shi)氣(qi)體。在對集塵(chen)(chen)(chen)(chen)板/管(guan)上捕集到(dao)的(de)(de)(de)(de)粉(fen)(fen)塵(chen)(chen)(chen)(chen)清(qing)(qing)除(chu)(chu)方式(shi)(shi)上WESP與(yu)DESP有較大區(qu)別,干(gan)(gan)式(shi)(shi)電(dian)除(chu)(chu)塵(chen)(chen)(chen)(chen)器(qi)一般采用(yong)機械振打或(huo)聲(sheng)波清(qing)(qing)灰(hui)(hui)等方式(shi)(shi)清(qing)(qing)除(chu)(chu)電(dian)極(ji)上的(de)(de)(de)(de)積灰(hui)(hui),而(er)濕(shi)式(shi)(shi)電(dian)除(chu)(chu)塵(chen)(chen)(chen)(chen)器(qi)則(ze)采用(yong)定(ding)期(qi)沖洗的(de)(de)(de)(de)方式(shi)(shi),使(shi)粉(fen)(fen)塵(chen)(chen)(chen)(chen)隨著(zhu)沖刷液的(de)(de)(de)(de)流動而(er)清(qing)(qing)除(chu)(chu)。