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)除(chu)塵器主要有兩種結構(gou)形(xing)式(shi),一種是使用(yong)耐腐蝕導(dao)電(dian)材(cai)(cai)料(liao)(可(ke)以為(wei)導(dao)電(dian)性能優良(liang)的(de)的(de)非(fei)金屬材(cai)(cai)料(liao)或具有耐腐蝕特性的(de)金屬材(cai)(cai)料(liao))做(zuo)集塵極(ji),另一種是用(yong)通過(guo)噴水(shui)或溢(yi)流水(shui)形(xing)成導(dao)電(dian)水(shui)膜,利用(yong)不導(dao)電(dian)的(de)非(fei)金屬材(cai)(cai)料(liao)做(zuo)集塵極(ji)。
收(shou)塵原(yuan)理
濕(shi)(shi)式(shi)(shi)(shi)(shi)(shi)電(dian)(dian)除塵(chen)(chen)器(qi)和(he)與(yu)干(gan)式(shi)(shi)(shi)(shi)(shi)電(dian)(dian)除塵(chen)(chen)器(qi)的(de)(de)(de)收塵(chen)(chen)原理(li)相同,都(dou)是(shi)靠高壓電(dian)(dian)暈放(fang)電(dian)(dian)使得粉塵(chen)(chen)荷(he)電(dian)(dian),荷(he)電(dian)(dian)后的(de)(de)(de)粉塵(chen)(chen)在(zai)電(dian)(dian)場(chang)力(li)的(de)(de)(de)作(zuo)用下到(dao)達集塵(chen)(chen)板/管(guan)。干(gan)式(shi)(shi)(shi)(shi)(shi)電(dian)(dian)收塵(chen)(chen)器(qi)主要處理(li)含水很低的(de)(de)(de)干(gan)氣體,濕(shi)(shi)式(shi)(shi)(shi)(shi)(shi)電(dian)(dian)除塵(chen)(chen)器(qi)主要處理(li)含水較(jiao)高乃(nai)至飽和(he)的(de)(de)(de)濕(shi)(shi)氣體。在(zai)對集塵(chen)(chen)板/管(guan)上(shang)捕(bu)集到(dao)的(de)(de)(de)粉塵(chen)(chen)清(qing)(qing)除方(fang)式(shi)(shi)(shi)(shi)(shi)上(shang)WESP與(yu)DESP有較(jiao)大區別(bie),干(gan)式(shi)(shi)(shi)(shi)(shi)電(dian)(dian)除塵(chen)(chen)器(qi)一般(ban)采用機械振打(da)或聲波清(qing)(qing)灰等方(fang)式(shi)(shi)(shi)(shi)(shi)清(qing)(qing)除電(dian)(dian)極(ji)上(shang)的(de)(de)(de)積灰,而濕(shi)(shi)式(shi)(shi)(shi)(shi)(shi)電(dian)(dian)除塵(chen)(chen)器(qi)則(ze)采用定(ding)期沖(chong)(chong)洗(xi)的(de)(de)(de)方(fang)式(shi)(shi)(shi)(shi)(shi),使粉塵(chen)(chen)隨(sui)著沖(chong)(chong)刷液(ye)的(de)(de)(de)流(liu)動(dong)而清(qing)(qing)除。