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(shi)式(shi)(shi)電除塵器(qi)主要有兩種結構形式(shi)(shi),一(yi)種是(shi)使用(yong)耐腐蝕(shi)導(dao)電材(cai)(cai)料(可以為導(dao)電性能優(you)良(liang)的(de)(de)的(de)(de)非金(jin)屬(shu)材(cai)(cai)料或(huo)具有耐腐蝕(shi)特性的(de)(de)金(jin)屬(shu)材(cai)(cai)料)做(zuo)集塵極(ji),另(ling)一(yi)種是(shi)用(yong)通過(guo)噴水或(huo)溢(yi)流水形成導(dao)電水膜,利用(yong)不導(dao)電的(de)(de)非金(jin)屬(shu)材(cai)(cai)料做(zuo)集塵極(ji)。
收(shou)塵原理
濕(shi)(shi)式電(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)器(qi)和(he)與(yu)干式電(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)器(qi)的(de)(de)收塵(chen)(chen)(chen)原理(li)(li)相同,都是靠高壓電(dian)(dian)(dian)暈放電(dian)(dian)(dian)使(shi)得(de)粉(fen)塵(chen)(chen)(chen)荷電(dian)(dian)(dian),荷電(dian)(dian)(dian)后的(de)(de)粉(fen)塵(chen)(chen)(chen)在(zai)電(dian)(dian)(dian)場(chang)力的(de)(de)作(zuo)用下到(dao)達集塵(chen)(chen)(chen)板(ban)/管。干式電(dian)(dian)(dian)收塵(chen)(chen)(chen)器(qi)主(zhu)要處理(li)(li)含水很(hen)低的(de)(de)干氣體(ti),濕(shi)(shi)式電(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)器(qi)主(zhu)要處理(li)(li)含水較(jiao)高乃至飽(bao)和(he)的(de)(de)濕(shi)(shi)氣體(ti)。在(zai)對(dui)集塵(chen)(chen)(chen)板(ban)/管上(shang)捕(bu)集到(dao)的(de)(de)粉(fen)塵(chen)(chen)(chen)清除(chu)方式上(shang)WESP與(yu)DESP有較(jiao)大區別,干式電(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)器(qi)一般(ban)采(cai)用機械振打或聲波清灰等(deng)方式清除(chu)電(dian)(dian)(dian)極上(shang)的(de)(de)積灰,而(er)濕(shi)(shi)式電(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)器(qi)則采(cai)用定期沖(chong)洗的(de)(de)方式,使(shi)粉(fen)塵(chen)(chen)(chen)隨著(zhu)沖(chong)刷液的(de)(de)流(liu)動而(er)清除(chu)。