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(chen)器主要有(you)(you)兩種結構形式,一(yi)種是(shi)使用(yong)耐腐蝕導電材料(可以為導電性能優良的(de)(de)的(de)(de)非金(jin)屬材料或(huo)具有(you)(you)耐腐蝕特性的(de)(de)金(jin)屬材料)做(zuo)集塵(chen)極(ji),另(ling)一(yi)種是(shi)用(yong)通過噴水或(huo)溢流水形成導電水膜,利(li)用(yong)不導電的(de)(de)非金(jin)屬材料做(zuo)集塵(chen)極(ji)。
收塵原理
濕式(shi)(shi)電(dian)除(chu)(chu)(chu)塵(chen)(chen)(chen)(chen)(chen)器(qi)(qi)(qi)和與干式(shi)(shi)電(dian)除(chu)(chu)(chu)塵(chen)(chen)(chen)(chen)(chen)器(qi)(qi)(qi)的(de)(de)(de)收(shou)塵(chen)(chen)(chen)(chen)(chen)原理相同(tong),都是靠(kao)高壓電(dian)暈放電(dian)使(shi)得粉塵(chen)(chen)(chen)(chen)(chen)荷電(dian),荷電(dian)后的(de)(de)(de)粉塵(chen)(chen)(chen)(chen)(chen)在電(dian)場(chang)力的(de)(de)(de)作用下到達(da)集塵(chen)(chen)(chen)(chen)(chen)板/管。干式(shi)(shi)電(dian)收(shou)塵(chen)(chen)(chen)(chen)(chen)器(qi)(qi)(qi)主(zhu)要處(chu)理含(han)水很低的(de)(de)(de)干氣體(ti),濕式(shi)(shi)電(dian)除(chu)(chu)(chu)塵(chen)(chen)(chen)(chen)(chen)器(qi)(qi)(qi)主(zhu)要處(chu)理含(han)水較高乃至(zhi)飽和的(de)(de)(de)濕氣體(ti)。在對集塵(chen)(chen)(chen)(chen)(chen)板/管上捕集到的(de)(de)(de)粉塵(chen)(chen)(chen)(chen)(chen)清(qing)(qing)除(chu)(chu)(chu)方式(shi)(shi)上WESP與DESP有(you)較大區(qu)別,干式(shi)(shi)電(dian)除(chu)(chu)(chu)塵(chen)(chen)(chen)(chen)(chen)器(qi)(qi)(qi)一般采(cai)用機械振打或聲波清(qing)(qing)灰等方式(shi)(shi)清(qing)(qing)除(chu)(chu)(chu)電(dian)極(ji)上的(de)(de)(de)積(ji)灰,而(er)濕式(shi)(shi)電(dian)除(chu)(chu)(chu)塵(chen)(chen)(chen)(chen)(chen)器(qi)(qi)(qi)則(ze)采(cai)用定期沖洗的(de)(de)(de)方式(shi)(shi),使(shi)粉塵(chen)(chen)(chen)(chen)(chen)隨著沖刷液的(de)(de)(de)流動而(er)清(qing)(qing)除(chu)(chu)(chu)。