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。
濕式電除塵(chen)(chen)器主要有兩種(zhong)結(jie)構形式,一種(zhong)是(shi)使用(yong)耐腐(fu)蝕(shi)導(dao)(dao)電材(cai)料(liao)(可以為導(dao)(dao)電性能優(you)良的的非(fei)金(jin)屬材(cai)料(liao)或具有耐腐(fu)蝕(shi)特性的金(jin)屬材(cai)料(liao))做集塵(chen)(chen)極,另一種(zhong)是(shi)用(yong)通過噴水(shui)或溢流水(shui)形成導(dao)(dao)電水(shui)膜(mo),利(li)用(yong)不(bu)導(dao)(dao)電的非(fei)金(jin)屬材(cai)料(liao)做集塵(chen)(chen)極。
收塵原(yuan)理
濕(shi)(shi)式(shi)電(dian)(dian)(dian)(dian)除塵(chen)(chen)(chen)器(qi)和與(yu)干(gan)式(shi)電(dian)(dian)(dian)(dian)除塵(chen)(chen)(chen)器(qi)的(de)收塵(chen)(chen)(chen)原理相同,都是靠(kao)高壓電(dian)(dian)(dian)(dian)暈放電(dian)(dian)(dian)(dian)使(shi)得粉(fen)(fen)塵(chen)(chen)(chen)荷(he)電(dian)(dian)(dian)(dian),荷(he)電(dian)(dian)(dian)(dian)后的(de)粉(fen)(fen)塵(chen)(chen)(chen)在電(dian)(dian)(dian)(dian)場力的(de)作用(yong)下到(dao)達集(ji)塵(chen)(chen)(chen)板/管。干(gan)式(shi)電(dian)(dian)(dian)(dian)收塵(chen)(chen)(chen)器(qi)主(zhu)要處理含水(shui)很(hen)低的(de)干(gan)氣體,濕(shi)(shi)式(shi)電(dian)(dian)(dian)(dian)除塵(chen)(chen)(chen)器(qi)主(zhu)要處理含水(shui)較高乃至飽和的(de)濕(shi)(shi)氣體。在對集(ji)塵(chen)(chen)(chen)板/管上捕集(ji)到(dao)的(de)粉(fen)(fen)塵(chen)(chen)(chen)清(qing)除方式(shi)上WESP與(yu)DESP有較大區別,干(gan)式(shi)電(dian)(dian)(dian)(dian)除塵(chen)(chen)(chen)器(qi)一般采(cai)用(yong)機械振(zhen)打(da)或(huo)聲(sheng)波(bo)清(qing)灰等方式(shi)清(qing)除電(dian)(dian)(dian)(dian)極上的(de)積灰,而(er)濕(shi)(shi)式(shi)電(dian)(dian)(dian)(dian)除塵(chen)(chen)(chen)器(qi)則采(cai)用(yong)定期(qi)沖(chong)洗的(de)方式(shi),使(shi)粉(fen)(fen)塵(chen)(chen)(chen)隨(sui)著沖(chong)刷液(ye)的(de)流動而(er)清(qing)除。