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)塵器主要有(you)兩(liang)種結構形式,一(yi)種是使(shi)用(yong)耐腐(fu)蝕(shi)導電材(cai)(cai)料(liao)(可以為導電性能優良的的非金(jin)屬(shu)材(cai)(cai)料(liao)或具(ju)有(you)耐腐(fu)蝕(shi)特(te)性的金(jin)屬(shu)材(cai)(cai)料(liao))做集塵極,另一(yi)種是用(yong)通過(guo)噴水或溢流(liu)水形成導電水膜,利用(yong)不(bu)導電的非金(jin)屬(shu)材(cai)(cai)料(liao)做集塵極。
收(shou)塵原理
濕(shi)(shi)式(shi)(shi)電(dian)(dian)(dian)除(chu)塵(chen)(chen)器(qi)和與干式(shi)(shi)電(dian)(dian)(dian)除(chu)塵(chen)(chen)器(qi)的(de)(de)(de)(de)收塵(chen)(chen)原理(li)(li)相同,都是靠高壓電(dian)(dian)(dian)暈放電(dian)(dian)(dian)使得粉塵(chen)(chen)荷電(dian)(dian)(dian),荷電(dian)(dian)(dian)后的(de)(de)(de)(de)粉塵(chen)(chen)在電(dian)(dian)(dian)場(chang)力的(de)(de)(de)(de)作用(yong)下(xia)到達集(ji)(ji)塵(chen)(chen)板(ban)/管(guan)(guan)。干式(shi)(shi)電(dian)(dian)(dian)收塵(chen)(chen)器(qi)主要(yao)處理(li)(li)含(han)水(shui)很低的(de)(de)(de)(de)干氣體(ti)(ti),濕(shi)(shi)式(shi)(shi)電(dian)(dian)(dian)除(chu)塵(chen)(chen)器(qi)主要(yao)處理(li)(li)含(han)水(shui)較高乃(nai)至飽和的(de)(de)(de)(de)濕(shi)(shi)氣體(ti)(ti)。在對集(ji)(ji)塵(chen)(chen)板(ban)/管(guan)(guan)上(shang)捕集(ji)(ji)到的(de)(de)(de)(de)粉塵(chen)(chen)清除(chu)方(fang)(fang)式(shi)(shi)上(shang)WESP與DESP有較大(da)區別(bie),干式(shi)(shi)電(dian)(dian)(dian)除(chu)塵(chen)(chen)器(qi)一般采用(yong)機械振(zhen)打或聲波(bo)清灰(hui)等(deng)方(fang)(fang)式(shi)(shi)清除(chu)電(dian)(dian)(dian)極(ji)上(shang)的(de)(de)(de)(de)積(ji)灰(hui),而(er)濕(shi)(shi)式(shi)(shi)電(dian)(dian)(dian)除(chu)塵(chen)(chen)器(qi)則采用(yong)定期沖(chong)洗的(de)(de)(de)(de)方(fang)(fang)式(shi)(shi),使粉塵(chen)(chen)隨著沖(chong)刷液(ye)的(de)(de)(de)(de)流動而(er)清除(chu)。