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(zhu)要(yao)有兩種結構形式(shi),一(yi)種是使用(yong)(yong)耐腐(fu)蝕導(dao)電(dian)(dian)(dian)材料(liao)(可以為導(dao)電(dian)(dian)(dian)性能優(you)良(liang)的(de)的(de)非金屬(shu)材料(liao)或具有耐腐(fu)蝕特性的(de)金屬(shu)材料(liao))做集塵(chen)極,另(ling)一(yi)種是用(yong)(yong)通過噴水(shui)或溢(yi)流水(shui)形成導(dao)電(dian)(dian)(dian)水(shui)膜,利(li)用(yong)(yong)不導(dao)電(dian)(dian)(dian)的(de)非金屬(shu)材料(liao)做集塵(chen)極。
收塵原(yuan)理
濕(shi)式(shi)電(dian)除(chu)塵(chen)(chen)器(qi)(qi)(qi)和與(yu)干(gan)(gan)式(shi)電(dian)除(chu)塵(chen)(chen)器(qi)(qi)(qi)的收(shou)塵(chen)(chen)原理(li)(li)相同,都是靠高(gao)壓電(dian)暈放電(dian)使得粉(fen)塵(chen)(chen)荷(he)電(dian),荷(he)電(dian)后(hou)的粉(fen)塵(chen)(chen)在(zai)電(dian)場力的作用下到(dao)達(da)集(ji)(ji)塵(chen)(chen)板(ban)/管(guan)。干(gan)(gan)式(shi)電(dian)收(shou)塵(chen)(chen)器(qi)(qi)(qi)主要處理(li)(li)含(han)水很低(di)的干(gan)(gan)氣體,濕(shi)式(shi)電(dian)除(chu)塵(chen)(chen)器(qi)(qi)(qi)主要處理(li)(li)含(han)水較高(gao)乃至(zhi)飽和的濕(shi)氣體。在(zai)對集(ji)(ji)塵(chen)(chen)板(ban)/管(guan)上捕集(ji)(ji)到(dao)的粉(fen)塵(chen)(chen)清(qing)(qing)除(chu)方(fang)式(shi)上WESP與(yu)DESP有較大(da)區(qu)別,干(gan)(gan)式(shi)電(dian)除(chu)塵(chen)(chen)器(qi)(qi)(qi)一般(ban)采用機(ji)械(xie)振(zhen)打或聲波(bo)清(qing)(qing)灰等方(fang)式(shi)清(qing)(qing)除(chu)電(dian)極上的積灰,而(er)濕(shi)式(shi)電(dian)除(chu)塵(chen)(chen)器(qi)(qi)(qi)則采用定(ding)期沖(chong)洗的方(fang)式(shi),使粉(fen)塵(chen)(chen)隨著沖(chong)刷(shua)液的流動而(er)清(qing)(qing)除(chu)。