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。
濕式電除塵器主要有兩(liang)種結(jie)構形(xing)式,一種是使(shi)用(yong)耐腐蝕導電材(cai)料(liao)(liao)(可以為(wei)導電性能優良的(de)(de)的(de)(de)非金(jin)屬材(cai)料(liao)(liao)或具(ju)有耐腐蝕特性的(de)(de)金(jin)屬材(cai)料(liao)(liao))做集(ji)塵極(ji),另一種是用(yong)通(tong)過噴水(shui)(shui)或溢流水(shui)(shui)形(xing)成導電水(shui)(shui)膜(mo),利(li)用(yong)不導電的(de)(de)非金(jin)屬材(cai)料(liao)(liao)做集(ji)塵極(ji)。
收塵原理
濕式(shi)(shi)電(dian)(dian)除塵(chen)(chen)(chen)(chen)器(qi)和(he)與(yu)干(gan)式(shi)(shi)電(dian)(dian)除塵(chen)(chen)(chen)(chen)器(qi)的(de)(de)(de)收(shou)塵(chen)(chen)(chen)(chen)原理(li)相同(tong),都是靠高壓電(dian)(dian)暈放電(dian)(dian)使得粉(fen)(fen)塵(chen)(chen)(chen)(chen)荷電(dian)(dian),荷電(dian)(dian)后的(de)(de)(de)粉(fen)(fen)塵(chen)(chen)(chen)(chen)在電(dian)(dian)場力(li)的(de)(de)(de)作用(yong)下到達集(ji)塵(chen)(chen)(chen)(chen)板(ban)/管。干(gan)式(shi)(shi)電(dian)(dian)收(shou)塵(chen)(chen)(chen)(chen)器(qi)主要處理(li)含水很低(di)的(de)(de)(de)干(gan)氣(qi)體(ti),濕式(shi)(shi)電(dian)(dian)除塵(chen)(chen)(chen)(chen)器(qi)主要處理(li)含水較高乃(nai)至(zhi)飽(bao)和(he)的(de)(de)(de)濕氣(qi)體(ti)。在對集(ji)塵(chen)(chen)(chen)(chen)板(ban)/管上(shang)捕(bu)集(ji)到的(de)(de)(de)粉(fen)(fen)塵(chen)(chen)(chen)(chen)清除方(fang)(fang)式(shi)(shi)上(shang)WESP與(yu)DESP有較大區別,干(gan)式(shi)(shi)電(dian)(dian)除塵(chen)(chen)(chen)(chen)器(qi)一般采(cai)用(yong)機械振打或聲波清灰(hui)等(deng)方(fang)(fang)式(shi)(shi)清除電(dian)(dian)極上(shang)的(de)(de)(de)積灰(hui),而濕式(shi)(shi)電(dian)(dian)除塵(chen)(chen)(chen)(chen)器(qi)則采(cai)用(yong)定期沖(chong)洗的(de)(de)(de)方(fang)(fang)式(shi)(shi),使粉(fen)(fen)塵(chen)(chen)(chen)(chen)隨著沖(chong)刷液的(de)(de)(de)流動而清除。