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)除塵器主要有兩(liang)種結構(gou)形(xing)式,一種是使用(yong)耐腐蝕(shi)導電(dian)材(cai)料(liao)(liao)(可以為導電(dian)性能優(you)良的(de)的(de)非金(jin)屬材(cai)料(liao)(liao)或具有耐腐蝕(shi)特性的(de)金(jin)屬材(cai)料(liao)(liao))做(zuo)集塵極,另一種是用(yong)通過噴水(shui)或溢流水(shui)形(xing)成(cheng)導電(dian)水(shui)膜,利用(yong)不(bu)導電(dian)的(de)非金(jin)屬材(cai)料(liao)(liao)做(zuo)集塵極。
收塵原理
濕式電(dian)(dian)(dian)除(chu)(chu)(chu)(chu)塵(chen)(chen)器(qi)(qi)和(he)(he)與(yu)干(gan)式電(dian)(dian)(dian)除(chu)(chu)(chu)(chu)塵(chen)(chen)器(qi)(qi)的(de)(de)收(shou)(shou)塵(chen)(chen)原理(li)相同,都是靠高(gao)壓電(dian)(dian)(dian)暈放電(dian)(dian)(dian)使(shi)得粉(fen)塵(chen)(chen)荷(he)電(dian)(dian)(dian),荷(he)電(dian)(dian)(dian)后的(de)(de)粉(fen)塵(chen)(chen)在電(dian)(dian)(dian)場(chang)力(li)的(de)(de)作用(yong)下(xia)到達集塵(chen)(chen)板(ban)/管。干(gan)式電(dian)(dian)(dian)收(shou)(shou)塵(chen)(chen)器(qi)(qi)主要處(chu)理(li)含水很低的(de)(de)干(gan)氣體,濕式電(dian)(dian)(dian)除(chu)(chu)(chu)(chu)塵(chen)(chen)器(qi)(qi)主要處(chu)理(li)含水較(jiao)(jiao)高(gao)乃至飽和(he)(he)的(de)(de)濕氣體。在對集塵(chen)(chen)板(ban)/管上捕集到的(de)(de)粉(fen)塵(chen)(chen)清(qing)除(chu)(chu)(chu)(chu)方(fang)(fang)式上WESP與(yu)DESP有較(jiao)(jiao)大(da)區別,干(gan)式電(dian)(dian)(dian)除(chu)(chu)(chu)(chu)塵(chen)(chen)器(qi)(qi)一般采用(yong)機械振打(da)或聲波清(qing)灰(hui)等方(fang)(fang)式清(qing)除(chu)(chu)(chu)(chu)電(dian)(dian)(dian)極(ji)上的(de)(de)積灰(hui),而濕式電(dian)(dian)(dian)除(chu)(chu)(chu)(chu)塵(chen)(chen)器(qi)(qi)則采用(yong)定(ding)期沖洗(xi)的(de)(de)方(fang)(fang)式,使(shi)粉(fen)塵(chen)(chen)隨著(zhu)沖刷液的(de)(de)流動而清(qing)除(chu)(chu)(chu)(chu)。