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)除塵器(qi)主要有(you)兩種結構形式,一(yi)種是使用耐(nai)腐蝕(shi)(shi)導電(dian)材(cai)料(可以為導電(dian)性(xing)能優良的(de)的(de)非金(jin)屬材(cai)料或具有(you)耐(nai)腐蝕(shi)(shi)特(te)性(xing)的(de)金(jin)屬材(cai)料)做(zuo)集塵極,另一(yi)種是用通過(guo)噴水或溢流水形成(cheng)導電(dian)水膜,利(li)用不導電(dian)的(de)非金(jin)屬材(cai)料做(zuo)集塵極。
收塵原理
濕(shi)(shi)式電(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)器和與干(gan)式電(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)器的(de)(de)(de)(de)收塵(chen)(chen)(chen)原(yuan)理(li)相同,都是靠高(gao)壓電(dian)(dian)(dian)暈放電(dian)(dian)(dian)使得粉塵(chen)(chen)(chen)荷(he)(he)電(dian)(dian)(dian),荷(he)(he)電(dian)(dian)(dian)后的(de)(de)(de)(de)粉塵(chen)(chen)(chen)在電(dian)(dian)(dian)場力的(de)(de)(de)(de)作用(yong)下到達集(ji)塵(chen)(chen)(chen)板(ban)/管(guan)。干(gan)式電(dian)(dian)(dian)收塵(chen)(chen)(chen)器主要(yao)(yao)處(chu)理(li)含(han)水很低的(de)(de)(de)(de)干(gan)氣(qi)體,濕(shi)(shi)式電(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)器主要(yao)(yao)處(chu)理(li)含(han)水較高(gao)乃至飽和的(de)(de)(de)(de)濕(shi)(shi)氣(qi)體。在對(dui)集(ji)塵(chen)(chen)(chen)板(ban)/管(guan)上捕集(ji)到的(de)(de)(de)(de)粉塵(chen)(chen)(chen)清(qing)(qing)除(chu)方(fang)式上WESP與DESP有較大區別(bie),干(gan)式電(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)器一般(ban)采(cai)用(yong)機械振打或聲波(bo)清(qing)(qing)灰(hui)等方(fang)式清(qing)(qing)除(chu)電(dian)(dian)(dian)極上的(de)(de)(de)(de)積灰(hui),而(er)濕(shi)(shi)式電(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)器則(ze)采(cai)用(yong)定(ding)期沖洗的(de)(de)(de)(de)方(fang)式,使粉塵(chen)(chen)(chen)隨著(zhu)沖刷液的(de)(de)(de)(de)流動而(er)清(qing)(qing)除(chu)。