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)除塵器主要(yao)有(you)兩種(zhong)結構形式,一種(zhong)是(shi)使用(yong)耐(nai)腐蝕導(dao)電(dian)(dian)材(cai)(cai)料(liao)(可以為導(dao)電(dian)(dian)性(xing)能(neng)優良的的非(fei)金(jin)屬材(cai)(cai)料(liao)或(huo)具有(you)耐(nai)腐蝕特性(xing)的金(jin)屬材(cai)(cai)料(liao))做(zuo)集塵極,另一種(zhong)是(shi)用(yong)通過(guo)噴水(shui)或(huo)溢流水(shui)形成導(dao)電(dian)(dian)水(shui)膜,利用(yong)不導(dao)電(dian)(dian)的非(fei)金(jin)屬材(cai)(cai)料(liao)做(zuo)集塵極。
收塵原(yuan)理(li)
濕(shi)式(shi)(shi)(shi)電(dian)除(chu)(chu)(chu)塵(chen)(chen)(chen)(chen)器和(he)與(yu)干(gan)(gan)式(shi)(shi)(shi)電(dian)除(chu)(chu)(chu)塵(chen)(chen)(chen)(chen)器的(de)(de)(de)(de)收塵(chen)(chen)(chen)(chen)原理相同(tong),都是(shi)靠(kao)高壓電(dian)暈放電(dian)使(shi)得粉(fen)塵(chen)(chen)(chen)(chen)荷(he)電(dian),荷(he)電(dian)后(hou)的(de)(de)(de)(de)粉(fen)塵(chen)(chen)(chen)(chen)在電(dian)場力的(de)(de)(de)(de)作用下到達(da)集(ji)塵(chen)(chen)(chen)(chen)板/管(guan)。干(gan)(gan)式(shi)(shi)(shi)電(dian)收塵(chen)(chen)(chen)(chen)器主要處理含水(shui)很(hen)低(di)的(de)(de)(de)(de)干(gan)(gan)氣(qi)體,濕(shi)式(shi)(shi)(shi)電(dian)除(chu)(chu)(chu)塵(chen)(chen)(chen)(chen)器主要處理含水(shui)較高乃至飽和(he)的(de)(de)(de)(de)濕(shi)氣(qi)體。在對集(ji)塵(chen)(chen)(chen)(chen)板/管(guan)上捕集(ji)到的(de)(de)(de)(de)粉(fen)塵(chen)(chen)(chen)(chen)清除(chu)(chu)(chu)方式(shi)(shi)(shi)上WESP與(yu)DESP有(you)較大(da)區別,干(gan)(gan)式(shi)(shi)(shi)電(dian)除(chu)(chu)(chu)塵(chen)(chen)(chen)(chen)器一般采用機械振打或(huo)聲波清灰等(deng)方式(shi)(shi)(shi)清除(chu)(chu)(chu)電(dian)極上的(de)(de)(de)(de)積(ji)灰,而(er)濕(shi)式(shi)(shi)(shi)電(dian)除(chu)(chu)(chu)塵(chen)(chen)(chen)(chen)器則采用定期沖洗的(de)(de)(de)(de)方式(shi)(shi)(shi),使(shi)粉(fen)塵(chen)(chen)(chen)(chen)隨著(zhu)沖刷液的(de)(de)(de)(de)流動而(er)清除(chu)(chu)(chu)。