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(shi)電除塵(chen)器主要(yao)有兩(liang)種(zhong)結構(gou)形式(shi),一種(zhong)是使(shi)用耐腐蝕(shi)(shi)導(dao)電材(cai)料(liao)(可以為(wei)導(dao)電性(xing)能(neng)優良的(de)的(de)非金(jin)屬材(cai)料(liao)或具有耐腐蝕(shi)(shi)特性(xing)的(de)金(jin)屬材(cai)料(liao))做(zuo)集(ji)塵(chen)極,另一種(zhong)是用通過噴水(shui)或溢流水(shui)形成(cheng)導(dao)電水(shui)膜,利用不導(dao)電的(de)非金(jin)屬材(cai)料(liao)做(zuo)集(ji)塵(chen)極。
收塵原理
濕(shi)(shi)式電(dian)(dian)除(chu)塵(chen)(chen)(chen)(chen)(chen)(chen)器(qi)和與(yu)干(gan)式電(dian)(dian)除(chu)塵(chen)(chen)(chen)(chen)(chen)(chen)器(qi)的(de)(de)收(shou)塵(chen)(chen)(chen)(chen)(chen)(chen)原理(li)相同,都是靠(kao)高壓(ya)電(dian)(dian)暈(yun)放電(dian)(dian)使(shi)得粉(fen)塵(chen)(chen)(chen)(chen)(chen)(chen)荷(he)電(dian)(dian),荷(he)電(dian)(dian)后的(de)(de)粉(fen)塵(chen)(chen)(chen)(chen)(chen)(chen)在(zai)(zai)電(dian)(dian)場力的(de)(de)作用下到(dao)達(da)集(ji)塵(chen)(chen)(chen)(chen)(chen)(chen)板(ban)(ban)/管。干(gan)式電(dian)(dian)收(shou)塵(chen)(chen)(chen)(chen)(chen)(chen)器(qi)主(zhu)要處(chu)理(li)含水很低的(de)(de)干(gan)氣(qi)體(ti),濕(shi)(shi)式電(dian)(dian)除(chu)塵(chen)(chen)(chen)(chen)(chen)(chen)器(qi)主(zhu)要處(chu)理(li)含水較(jiao)高乃至飽和的(de)(de)濕(shi)(shi)氣(qi)體(ti)。在(zai)(zai)對(dui)集(ji)塵(chen)(chen)(chen)(chen)(chen)(chen)板(ban)(ban)/管上(shang)捕集(ji)到(dao)的(de)(de)粉(fen)塵(chen)(chen)(chen)(chen)(chen)(chen)清除(chu)方(fang)式上(shang)WESP與(yu)DESP有(you)較(jiao)大區別(bie),干(gan)式電(dian)(dian)除(chu)塵(chen)(chen)(chen)(chen)(chen)(chen)器(qi)一般采用機械振打(da)或聲(sheng)波清灰(hui)等方(fang)式清除(chu)電(dian)(dian)極上(shang)的(de)(de)積灰(hui),而(er)濕(shi)(shi)式電(dian)(dian)除(chu)塵(chen)(chen)(chen)(chen)(chen)(chen)器(qi)則采用定期沖洗(xi)的(de)(de)方(fang)式,使(shi)粉(fen)塵(chen)(chen)(chen)(chen)(chen)(chen)隨著沖刷液的(de)(de)流動而(er)清除(chu)。