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(qi)主要有兩種結構形(xing)式,一種是(shi)使用耐(nai)腐(fu)蝕(shi)導電(dian)(dian)材(cai)料(liao)(liao)(可以為導電(dian)(dian)性(xing)能優良的(de)的(de)非(fei)金(jin)屬材(cai)料(liao)(liao)或(huo)具有耐(nai)腐(fu)蝕(shi)特性(xing)的(de)金(jin)屬材(cai)料(liao)(liao))做(zuo)集塵極,另一種是(shi)用通過(guo)噴水(shui)或(huo)溢(yi)流水(shui)形(xing)成導電(dian)(dian)水(shui)膜,利用不(bu)導電(dian)(dian)的(de)非(fei)金(jin)屬材(cai)料(liao)(liao)做(zuo)集塵極。
收(shou)塵原(yuan)理
濕式(shi)電(dian)(dian)除(chu)(chu)塵(chen)(chen)(chen)器和與干(gan)式(shi)電(dian)(dian)除(chu)(chu)塵(chen)(chen)(chen)器的(de)收塵(chen)(chen)(chen)原理相同,都是靠高壓(ya)電(dian)(dian)暈放電(dian)(dian)使(shi)得粉塵(chen)(chen)(chen)荷(he)電(dian)(dian),荷(he)電(dian)(dian)后的(de)粉塵(chen)(chen)(chen)在電(dian)(dian)場力的(de)作用(yong)下到(dao)達集(ji)塵(chen)(chen)(chen)板/管。干(gan)式(shi)電(dian)(dian)收塵(chen)(chen)(chen)器主(zhu)要(yao)處理含(han)水很低的(de)干(gan)氣(qi)體(ti),濕式(shi)電(dian)(dian)除(chu)(chu)塵(chen)(chen)(chen)器主(zhu)要(yao)處理含(han)水較高乃至飽和的(de)濕氣(qi)體(ti)。在對(dui)集(ji)塵(chen)(chen)(chen)板/管上(shang)(shang)捕集(ji)到(dao)的(de)粉塵(chen)(chen)(chen)清(qing)(qing)除(chu)(chu)方式(shi)上(shang)(shang)WESP與DESP有較大區別,干(gan)式(shi)電(dian)(dian)除(chu)(chu)塵(chen)(chen)(chen)器一般采用(yong)機械振打或聲波清(qing)(qing)灰(hui)(hui)等(deng)方式(shi)清(qing)(qing)除(chu)(chu)電(dian)(dian)極上(shang)(shang)的(de)積灰(hui)(hui),而濕式(shi)電(dian)(dian)除(chu)(chu)塵(chen)(chen)(chen)器則采用(yong)定期沖(chong)洗的(de)方式(shi),使(shi)粉塵(chen)(chen)(chen)隨著沖(chong)刷液(ye)的(de)流動而清(qing)(qing)除(chu)(chu)。