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(dian)(dian)除塵器主(zhu)要有兩種(zhong)(zhong)結構形(xing)式,一(yi)種(zhong)(zhong)是使(shi)用耐腐蝕(shi)導電(dian)(dian)材料(liao)(可以(yi)為(wei)導電(dian)(dian)性能優良的的非(fei)金(jin)屬材料(liao)或具有耐腐蝕(shi)特性的金(jin)屬材料(liao))做集塵極,另一(yi)種(zhong)(zhong)是用通過噴水或溢流水形(xing)成導電(dian)(dian)水膜(mo),利(li)用不導電(dian)(dian)的非(fei)金(jin)屬材料(liao)做集塵極。
收塵(chen)原(yuan)理
濕式(shi)(shi)電(dian)(dian)(dian)(dian)(dian)除(chu)(chu)塵(chen)(chen)(chen)(chen)器(qi)和與(yu)干(gan)(gan)式(shi)(shi)電(dian)(dian)(dian)(dian)(dian)除(chu)(chu)塵(chen)(chen)(chen)(chen)器(qi)的(de)(de)(de)收塵(chen)(chen)(chen)(chen)原理(li)相同,都是靠高(gao)壓電(dian)(dian)(dian)(dian)(dian)暈放(fang)電(dian)(dian)(dian)(dian)(dian)使得粉(fen)塵(chen)(chen)(chen)(chen)荷電(dian)(dian)(dian)(dian)(dian),荷電(dian)(dian)(dian)(dian)(dian)后的(de)(de)(de)粉(fen)塵(chen)(chen)(chen)(chen)在(zai)電(dian)(dian)(dian)(dian)(dian)場力的(de)(de)(de)作用(yong)下到達(da)集(ji)塵(chen)(chen)(chen)(chen)板(ban)/管。干(gan)(gan)式(shi)(shi)電(dian)(dian)(dian)(dian)(dian)收塵(chen)(chen)(chen)(chen)器(qi)主要(yao)處理(li)含水(shui)很低的(de)(de)(de)干(gan)(gan)氣體(ti),濕式(shi)(shi)電(dian)(dian)(dian)(dian)(dian)除(chu)(chu)塵(chen)(chen)(chen)(chen)器(qi)主要(yao)處理(li)含水(shui)較高(gao)乃至(zhi)飽和的(de)(de)(de)濕氣體(ti)。在(zai)對集(ji)塵(chen)(chen)(chen)(chen)板(ban)/管上(shang)(shang)(shang)捕集(ji)到的(de)(de)(de)粉(fen)塵(chen)(chen)(chen)(chen)清(qing)(qing)除(chu)(chu)方(fang)(fang)式(shi)(shi)上(shang)(shang)(shang)WESP與(yu)DESP有(you)較大區別,干(gan)(gan)式(shi)(shi)電(dian)(dian)(dian)(dian)(dian)除(chu)(chu)塵(chen)(chen)(chen)(chen)器(qi)一般采用(yong)機(ji)械振打或聲波(bo)清(qing)(qing)灰等方(fang)(fang)式(shi)(shi)清(qing)(qing)除(chu)(chu)電(dian)(dian)(dian)(dian)(dian)極上(shang)(shang)(shang)的(de)(de)(de)積灰,而濕式(shi)(shi)電(dian)(dian)(dian)(dian)(dian)除(chu)(chu)塵(chen)(chen)(chen)(chen)器(qi)則采用(yong)定期沖洗的(de)(de)(de)方(fang)(fang)式(shi)(shi),使粉(fen)塵(chen)(chen)(chen)(chen)隨(sui)著沖刷液的(de)(de)(de)流(liu)動而清(qing)(qing)除(chu)(chu)。