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)除塵(chen)器主要有兩(liang)種結(jie)構形式(shi),一種是使用(yong)耐腐(fu)蝕導電(dian)(dian)材料(可以(yi)為導電(dian)(dian)性能優良的(de)(de)的(de)(de)非金屬材料或具有耐腐(fu)蝕特(te)性的(de)(de)金屬材料)做集(ji)(ji)塵(chen)極,另一種是用(yong)通過噴水(shui)或溢流水(shui)形成導電(dian)(dian)水(shui)膜,利(li)用(yong)不導電(dian)(dian)的(de)(de)非金屬材料做集(ji)(ji)塵(chen)極。
收塵原(yuan)理
濕式(shi)(shi)電(dian)(dian)(dian)(dian)(dian)(dian)除(chu)(chu)(chu)塵(chen)(chen)(chen)(chen)器(qi)(qi)和與(yu)干(gan)式(shi)(shi)電(dian)(dian)(dian)(dian)(dian)(dian)除(chu)(chu)(chu)塵(chen)(chen)(chen)(chen)器(qi)(qi)的(de)(de)收塵(chen)(chen)(chen)(chen)原理(li)相同(tong),都(dou)是靠(kao)高壓電(dian)(dian)(dian)(dian)(dian)(dian)暈放電(dian)(dian)(dian)(dian)(dian)(dian)使得粉(fen)(fen)(fen)塵(chen)(chen)(chen)(chen)荷電(dian)(dian)(dian)(dian)(dian)(dian),荷電(dian)(dian)(dian)(dian)(dian)(dian)后(hou)的(de)(de)粉(fen)(fen)(fen)塵(chen)(chen)(chen)(chen)在電(dian)(dian)(dian)(dian)(dian)(dian)場力的(de)(de)作用下到達集(ji)(ji)塵(chen)(chen)(chen)(chen)板(ban)/管。干(gan)式(shi)(shi)電(dian)(dian)(dian)(dian)(dian)(dian)收塵(chen)(chen)(chen)(chen)器(qi)(qi)主要處理(li)含水很(hen)低(di)的(de)(de)干(gan)氣(qi)(qi)體(ti)(ti),濕式(shi)(shi)電(dian)(dian)(dian)(dian)(dian)(dian)除(chu)(chu)(chu)塵(chen)(chen)(chen)(chen)器(qi)(qi)主要處理(li)含水較高乃至飽和的(de)(de)濕氣(qi)(qi)體(ti)(ti)。在對集(ji)(ji)塵(chen)(chen)(chen)(chen)板(ban)/管上(shang)捕集(ji)(ji)到的(de)(de)粉(fen)(fen)(fen)塵(chen)(chen)(chen)(chen)清(qing)除(chu)(chu)(chu)方(fang)(fang)式(shi)(shi)上(shang)WESP與(yu)DESP有較大區(qu)別(bie),干(gan)式(shi)(shi)電(dian)(dian)(dian)(dian)(dian)(dian)除(chu)(chu)(chu)塵(chen)(chen)(chen)(chen)器(qi)(qi)一(yi)般(ban)采(cai)用機(ji)械(xie)振打或(huo)聲(sheng)波清(qing)灰(hui)等方(fang)(fang)式(shi)(shi)清(qing)除(chu)(chu)(chu)電(dian)(dian)(dian)(dian)(dian)(dian)極上(shang)的(de)(de)積灰(hui),而(er)濕式(shi)(shi)電(dian)(dian)(dian)(dian)(dian)(dian)除(chu)(chu)(chu)塵(chen)(chen)(chen)(chen)器(qi)(qi)則采(cai)用定期沖洗的(de)(de)方(fang)(fang)式(shi)(shi),使粉(fen)(fen)(fen)塵(chen)(chen)(chen)(chen)隨(sui)著沖刷(shua)液的(de)(de)流動而(er)清(qing)除(chu)(chu)(chu)。