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)電除塵器主要有兩種(zhong)結構形(xing)式(shi),一(yi)種(zhong)是使(shi)用耐腐(fu)蝕(shi)導電材(cai)(cai)料(可(ke)以(yi)為導電性能(neng)優良的(de)的(de)非金(jin)屬材(cai)(cai)料或具有耐腐(fu)蝕(shi)特性的(de)金(jin)屬材(cai)(cai)料)做集(ji)(ji)塵極,另一(yi)種(zhong)是用通過(guo)噴(pen)水或溢流水形(xing)成導電水膜,利用不導電的(de)非金(jin)屬材(cai)(cai)料做集(ji)(ji)塵極。
收(shou)塵原理
濕式(shi)電(dian)(dian)(dian)(dian)(dian)除塵(chen)(chen)器(qi)和與(yu)干式(shi)電(dian)(dian)(dian)(dian)(dian)除塵(chen)(chen)器(qi)的收塵(chen)(chen)原理相同,都(dou)是(shi)靠高壓電(dian)(dian)(dian)(dian)(dian)暈放(fang)電(dian)(dian)(dian)(dian)(dian)使得粉塵(chen)(chen)荷(he)電(dian)(dian)(dian)(dian)(dian),荷(he)電(dian)(dian)(dian)(dian)(dian)后的粉塵(chen)(chen)在(zai)電(dian)(dian)(dian)(dian)(dian)場力(li)的作用(yong)下到(dao)達集塵(chen)(chen)板/管(guan)。干式(shi)電(dian)(dian)(dian)(dian)(dian)收塵(chen)(chen)器(qi)主要(yao)處(chu)理含(han)(han)水(shui)很低的干氣(qi)體,濕式(shi)電(dian)(dian)(dian)(dian)(dian)除塵(chen)(chen)器(qi)主要(yao)處(chu)理含(han)(han)水(shui)較高乃至飽和的濕氣(qi)體。在(zai)對集塵(chen)(chen)板/管(guan)上捕集到(dao)的粉塵(chen)(chen)清(qing)(qing)除方(fang)式(shi)上WESP與(yu)DESP有(you)較大區別,干式(shi)電(dian)(dian)(dian)(dian)(dian)除塵(chen)(chen)器(qi)一(yi)般采用(yong)機械振(zhen)打(da)或聲(sheng)波清(qing)(qing)灰等方(fang)式(shi)清(qing)(qing)除電(dian)(dian)(dian)(dian)(dian)極上的積灰,而濕式(shi)電(dian)(dian)(dian)(dian)(dian)除塵(chen)(chen)器(qi)則(ze)采用(yong)定期沖洗的方(fang)式(shi),使粉塵(chen)(chen)隨著沖刷(shua)液的流(liu)動而清(qing)(qing)除。