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(chen)器主要(yao)有(you)兩種結構形式,一種是使用耐腐蝕(shi)導電(dian)材(cai)料(可以為導電(dian)性(xing)能優良的的非金屬(shu)材(cai)料或具有(you)耐腐蝕(shi)特性(xing)的金屬(shu)材(cai)料)做集塵(chen)極,另一種是用通過噴水或溢流水形成導電(dian)水膜,利用不導電(dian)的非金屬(shu)材(cai)料做集塵(chen)極。
收塵原理
濕(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)收(shou)塵(chen)(chen)原理相(xiang)同,都是靠高(gao)壓電(dian)(dian)(dian)暈放電(dian)(dian)(dian)使(shi)得粉塵(chen)(chen)荷電(dian)(dian)(dian),荷電(dian)(dian)(dian)后的(de)(de)(de)粉塵(chen)(chen)在電(dian)(dian)(dian)場力的(de)(de)(de)作用下到達集塵(chen)(chen)板(ban)/管(guan)。干式(shi)(shi)電(dian)(dian)(dian)收(shou)塵(chen)(chen)器(qi)主要(yao)處理含水很低(di)的(de)(de)(de)干氣(qi)體(ti)(ti),濕(shi)式(shi)(shi)電(dian)(dian)(dian)除(chu)塵(chen)(chen)器(qi)主要(yao)處理含水較高(gao)乃至飽和的(de)(de)(de)濕(shi)氣(qi)體(ti)(ti)。在對集塵(chen)(chen)板(ban)/管(guan)上(shang)捕集到的(de)(de)(de)粉塵(chen)(chen)清(qing)除(chu)方式(shi)(shi)上(shang)WESP與DESP有(you)較大區別(bie),干式(shi)(shi)電(dian)(dian)(dian)除(chu)塵(chen)(chen)器(qi)一般采用機(ji)械振打或聲波(bo)清(qing)灰等方式(shi)(shi)清(qing)除(chu)電(dian)(dian)(dian)極上(shang)的(de)(de)(de)積灰,而(er)濕(shi)式(shi)(shi)電(dian)(dian)(dian)除(chu)塵(chen)(chen)器(qi)則采用定期沖洗(xi)的(de)(de)(de)方式(shi)(shi),使(shi)粉塵(chen)(chen)隨著沖刷(shua)液的(de)(de)(de)流動而(er)清(qing)除(chu)。