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(shi)式電除塵器主要有兩種結構形式,一(yi)種是(shi)使用(yong)耐腐蝕(shi)導(dao)電材料(liao)(可以為導(dao)電性(xing)能(neng)優(you)良(liang)的(de)(de)的(de)(de)非金(jin)屬(shu)材料(liao)或(huo)具有耐腐蝕(shi)特性(xing)的(de)(de)金(jin)屬(shu)材料(liao))做(zuo)集(ji)塵極,另一(yi)種是(shi)用(yong)通過噴水或(huo)溢流水形成導(dao)電水膜,利用(yong)不(bu)導(dao)電的(de)(de)非金(jin)屬(shu)材料(liao)做(zuo)集(ji)塵極。
收塵原理
濕式(shi)(shi)(shi)電(dian)(dian)(dian)除塵(chen)(chen)器(qi)(qi)和與干(gan)式(shi)(shi)(shi)電(dian)(dian)(dian)除塵(chen)(chen)器(qi)(qi)的(de)收塵(chen)(chen)原理(li)相同,都是(shi)靠高(gao)壓電(dian)(dian)(dian)暈放(fang)電(dian)(dian)(dian)使得粉(fen)(fen)塵(chen)(chen)荷電(dian)(dian)(dian),荷電(dian)(dian)(dian)后的(de)粉(fen)(fen)塵(chen)(chen)在(zai)電(dian)(dian)(dian)場力的(de)作用下到達集(ji)(ji)塵(chen)(chen)板(ban)/管(guan)。干(gan)式(shi)(shi)(shi)電(dian)(dian)(dian)收塵(chen)(chen)器(qi)(qi)主要(yao)處理(li)含水(shui)很低(di)的(de)干(gan)氣體(ti),濕式(shi)(shi)(shi)電(dian)(dian)(dian)除塵(chen)(chen)器(qi)(qi)主要(yao)處理(li)含水(shui)較高(gao)乃至(zhi)飽和的(de)濕氣體(ti)。在(zai)對集(ji)(ji)塵(chen)(chen)板(ban)/管(guan)上捕(bu)集(ji)(ji)到的(de)粉(fen)(fen)塵(chen)(chen)清(qing)除方式(shi)(shi)(shi)上WESP與DESP有較大區別,干(gan)式(shi)(shi)(shi)電(dian)(dian)(dian)除塵(chen)(chen)器(qi)(qi)一般采用機械(xie)振打或聲波清(qing)灰(hui)等方式(shi)(shi)(shi)清(qing)除電(dian)(dian)(dian)極上的(de)積(ji)灰(hui),而濕式(shi)(shi)(shi)電(dian)(dian)(dian)除塵(chen)(chen)器(qi)(qi)則采用定(ding)期沖(chong)洗(xi)的(de)方式(shi)(shi)(shi),使粉(fen)(fen)塵(chen)(chen)隨著(zhu)沖(chong)刷液的(de)流動(dong)而清(qing)除。