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(you)兩(liang)種(zhong)結構(gou)形(xing)式,一種(zhong)是(shi)使用(yong)耐(nai)腐蝕導電材(cai)料(可(ke)以(yi)為導電性能優良的(de)的(de)非(fei)金(jin)(jin)屬(shu)(shu)(shu)材(cai)料或(huo)具有(you)耐(nai)腐蝕特性的(de)金(jin)(jin)屬(shu)(shu)(shu)材(cai)料)做集(ji)(ji)塵(chen)(chen)極,另一種(zhong)是(shi)用(yong)通(tong)過(guo)噴水(shui)或(huo)溢流(liu)水(shui)形(xing)成(cheng)導電水(shui)膜,利用(yong)不導電的(de)非(fei)金(jin)(jin)屬(shu)(shu)(shu)材(cai)料做集(ji)(ji)塵(chen)(chen)極。
收(shou)塵原(yuan)理(li)
濕(shi)式(shi)電(dian)(dian)除(chu)(chu)塵(chen)(chen)器(qi)和與干(gan)式(shi)電(dian)(dian)除(chu)(chu)塵(chen)(chen)器(qi)的收(shou)塵(chen)(chen)原理相同,都是靠高壓電(dian)(dian)暈放電(dian)(dian)使得粉(fen)(fen)塵(chen)(chen)荷(he)電(dian)(dian),荷(he)電(dian)(dian)后的粉(fen)(fen)塵(chen)(chen)在電(dian)(dian)場力(li)的作用(yong)下到達集塵(chen)(chen)板(ban)/管(guan)。干(gan)式(shi)電(dian)(dian)收(shou)塵(chen)(chen)器(qi)主(zhu)要處(chu)理含水很(hen)低的干(gan)氣體(ti),濕(shi)式(shi)電(dian)(dian)除(chu)(chu)塵(chen)(chen)器(qi)主(zhu)要處(chu)理含水較(jiao)高乃(nai)至飽和的濕(shi)氣體(ti)。在對(dui)集塵(chen)(chen)板(ban)/管(guan)上(shang)捕集到的粉(fen)(fen)塵(chen)(chen)清除(chu)(chu)方(fang)式(shi)上(shang)WESP與DESP有較(jiao)大區(qu)別,干(gan)式(shi)電(dian)(dian)除(chu)(chu)塵(chen)(chen)器(qi)一般采用(yong)機械(xie)振(zhen)打或聲波清灰等方(fang)式(shi)清除(chu)(chu)電(dian)(dian)極上(shang)的積灰,而濕(shi)式(shi)電(dian)(dian)除(chu)(chu)塵(chen)(chen)器(qi)則采用(yong)定期沖洗的方(fang)式(shi),使粉(fen)(fen)塵(chen)(chen)隨(sui)著沖刷液的流動(dong)而清除(chu)(chu)。