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(chen)器主(zhu)要(yao)有(you)兩種結構形(xing)式,一(yi)種是(shi)使用(yong)耐腐(fu)蝕導(dao)(dao)電(dian)材(cai)料(liao)(liao)(可以為導(dao)(dao)電(dian)性(xing)能(neng)優(you)良的(de)的(de)非(fei)(fei)金(jin)(jin)屬(shu)材(cai)料(liao)(liao)或具(ju)有(you)耐腐(fu)蝕特(te)性(xing)的(de)金(jin)(jin)屬(shu)材(cai)料(liao)(liao))做(zuo)集塵(chen)極(ji),另一(yi)種是(shi)用(yong)通(tong)過(guo)噴水(shui)或溢(yi)流水(shui)形(xing)成導(dao)(dao)電(dian)水(shui)膜,利用(yong)不導(dao)(dao)電(dian)的(de)非(fei)(fei)金(jin)(jin)屬(shu)材(cai)料(liao)(liao)做(zuo)集塵(chen)極(ji)。
收塵原理
濕(shi)(shi)式(shi)(shi)(shi)電(dian)(dian)除(chu)(chu)塵(chen)器和與(yu)干(gan)式(shi)(shi)(shi)電(dian)(dian)除(chu)(chu)塵(chen)器的(de)(de)(de)收塵(chen)原(yuan)理相(xiang)同,都是靠高(gao)壓電(dian)(dian)暈放(fang)電(dian)(dian)使得粉(fen)(fen)塵(chen)荷(he)電(dian)(dian),荷(he)電(dian)(dian)后的(de)(de)(de)粉(fen)(fen)塵(chen)在(zai)電(dian)(dian)場力的(de)(de)(de)作用下到達集(ji)(ji)塵(chen)板(ban)/管(guan)。干(gan)式(shi)(shi)(shi)電(dian)(dian)收塵(chen)器主(zhu)要處(chu)(chu)理含(han)水(shui)很(hen)低的(de)(de)(de)干(gan)氣(qi)(qi)體(ti),濕(shi)(shi)式(shi)(shi)(shi)電(dian)(dian)除(chu)(chu)塵(chen)器主(zhu)要處(chu)(chu)理含(han)水(shui)較(jiao)高(gao)乃至飽和的(de)(de)(de)濕(shi)(shi)氣(qi)(qi)體(ti)。在(zai)對集(ji)(ji)塵(chen)板(ban)/管(guan)上捕(bu)集(ji)(ji)到的(de)(de)(de)粉(fen)(fen)塵(chen)清(qing)除(chu)(chu)方式(shi)(shi)(shi)上WESP與(yu)DESP有較(jiao)大區別,干(gan)式(shi)(shi)(shi)電(dian)(dian)除(chu)(chu)塵(chen)器一(yi)般(ban)采用機(ji)械振打(da)或聲(sheng)波(bo)清(qing)灰等(deng)方式(shi)(shi)(shi)清(qing)除(chu)(chu)電(dian)(dian)極上的(de)(de)(de)積灰,而濕(shi)(shi)式(shi)(shi)(shi)電(dian)(dian)除(chu)(chu)塵(chen)器則采用定期沖洗(xi)的(de)(de)(de)方式(shi)(shi)(shi),使粉(fen)(fen)塵(chen)隨著沖刷液的(de)(de)(de)流動而清(qing)除(chu)(chu)。