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)(dian)(dian)除塵(chen)器主要有兩種結(jie)構(gou)形式,一種是使用耐腐蝕(shi)導電(dian)(dian)(dian)材料(可以為(wei)導電(dian)(dian)(dian)性能優(you)良(liang)的的非金屬材料或具有耐腐蝕(shi)特性的金屬材料)做集(ji)塵(chen)極,另(ling)一種是用通過噴水或溢流水形成導電(dian)(dian)(dian)水膜,利用不(bu)導電(dian)(dian)(dian)的非金屬材料做集(ji)塵(chen)極。
收塵原理
濕(shi)式(shi)(shi)電(dian)(dian)除(chu)塵(chen)(chen)器(qi)和(he)與干(gan)(gan)(gan)式(shi)(shi)電(dian)(dian)除(chu)塵(chen)(chen)器(qi)的(de)(de)(de)收(shou)(shou)塵(chen)(chen)原理相同,都(dou)是靠高壓電(dian)(dian)暈(yun)放電(dian)(dian)使得粉(fen)(fen)塵(chen)(chen)荷電(dian)(dian),荷電(dian)(dian)后(hou)的(de)(de)(de)粉(fen)(fen)塵(chen)(chen)在電(dian)(dian)場力的(de)(de)(de)作用(yong)下到達集塵(chen)(chen)板/管(guan)。干(gan)(gan)(gan)式(shi)(shi)電(dian)(dian)收(shou)(shou)塵(chen)(chen)器(qi)主要處理含(han)水很低的(de)(de)(de)干(gan)(gan)(gan)氣(qi)體(ti),濕(shi)式(shi)(shi)電(dian)(dian)除(chu)塵(chen)(chen)器(qi)主要處理含(han)水較高乃至飽和(he)的(de)(de)(de)濕(shi)氣(qi)體(ti)。在對集塵(chen)(chen)板/管(guan)上(shang)捕集到的(de)(de)(de)粉(fen)(fen)塵(chen)(chen)清(qing)除(chu)方(fang)式(shi)(shi)上(shang)WESP與DESP有較大區別(bie),干(gan)(gan)(gan)式(shi)(shi)電(dian)(dian)除(chu)塵(chen)(chen)器(qi)一般(ban)采(cai)用(yong)機(ji)械振打或聲波清(qing)灰等方(fang)式(shi)(shi)清(qing)除(chu)電(dian)(dian)極(ji)上(shang)的(de)(de)(de)積灰,而(er)(er)濕(shi)式(shi)(shi)電(dian)(dian)除(chu)塵(chen)(chen)器(qi)則(ze)采(cai)用(yong)定期沖洗的(de)(de)(de)方(fang)式(shi)(shi),使粉(fen)(fen)塵(chen)(chen)隨著沖刷(shua)液的(de)(de)(de)流動(dong)而(er)(er)清(qing)除(chu)。