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。
濕式電除(chu)塵(chen)器(qi)主要有兩種結(jie)構形式,一種是使用耐(nai)腐蝕導(dao)電材(cai)(cai)料(可以為(wei)導(dao)電性(xing)能優良的(de)(de)的(de)(de)非(fei)金(jin)屬(shu)材(cai)(cai)料或具有耐(nai)腐蝕特性(xing)的(de)(de)金(jin)屬(shu)材(cai)(cai)料)做(zuo)集塵(chen)極,另一種是用通(tong)過噴水(shui)或溢流水(shui)形成導(dao)電水(shui)膜,利(li)用不導(dao)電的(de)(de)非(fei)金(jin)屬(shu)材(cai)(cai)料做(zuo)集塵(chen)極。
收塵原理(li)
濕式(shi)(shi)(shi)(shi)電(dian)(dian)(dian)除(chu)(chu)塵(chen)器和與干(gan)式(shi)(shi)(shi)(shi)電(dian)(dian)(dian)除(chu)(chu)塵(chen)器的(de)(de)(de)收(shou)塵(chen)原理相(xiang)同,都是靠高壓電(dian)(dian)(dian)暈放電(dian)(dian)(dian)使得粉(fen)(fen)(fen)塵(chen)荷(he)電(dian)(dian)(dian),荷(he)電(dian)(dian)(dian)后的(de)(de)(de)粉(fen)(fen)(fen)塵(chen)在電(dian)(dian)(dian)場力的(de)(de)(de)作用(yong)(yong)下到達(da)集(ji)塵(chen)板/管。干(gan)式(shi)(shi)(shi)(shi)電(dian)(dian)(dian)收(shou)塵(chen)器主要處(chu)理含水很(hen)低的(de)(de)(de)干(gan)氣(qi)體,濕式(shi)(shi)(shi)(shi)電(dian)(dian)(dian)除(chu)(chu)塵(chen)器主要處(chu)理含水較高乃(nai)至飽和的(de)(de)(de)濕氣(qi)體。在對集(ji)塵(chen)板/管上捕集(ji)到的(de)(de)(de)粉(fen)(fen)(fen)塵(chen)清(qing)除(chu)(chu)方(fang)(fang)式(shi)(shi)(shi)(shi)上WESP與DESP有較大區別,干(gan)式(shi)(shi)(shi)(shi)電(dian)(dian)(dian)除(chu)(chu)塵(chen)器一般采用(yong)(yong)機械振打或(huo)聲波清(qing)灰等方(fang)(fang)式(shi)(shi)(shi)(shi)清(qing)除(chu)(chu)電(dian)(dian)(dian)極(ji)上的(de)(de)(de)積灰,而濕式(shi)(shi)(shi)(shi)電(dian)(dian)(dian)除(chu)(chu)塵(chen)器則采用(yong)(yong)定(ding)期沖(chong)洗(xi)的(de)(de)(de)方(fang)(fang)式(shi)(shi)(shi)(shi),使粉(fen)(fen)(fen)塵(chen)隨著沖(chong)刷液的(de)(de)(de)流動而清(qing)除(chu)(chu)。