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(shi)式(shi)電(dian)除塵器主(zhu)要有兩種(zhong)結構形(xing)式(shi),一(yi)種(zhong)是使用耐腐蝕導(dao)(dao)電(dian)材(cai)(cai)料(liao)(liao)(可以為導(dao)(dao)電(dian)性能優良的的非(fei)金(jin)屬材(cai)(cai)料(liao)(liao)或(huo)具有耐腐蝕特性的金(jin)屬材(cai)(cai)料(liao)(liao))做集(ji)塵極,另一(yi)種(zhong)是用通過噴水或(huo)溢流水形(xing)成(cheng)導(dao)(dao)電(dian)水膜,利(li)用不導(dao)(dao)電(dian)的非(fei)金(jin)屬材(cai)(cai)料(liao)(liao)做集(ji)塵極。
收(shou)塵原理
濕(shi)式(shi)(shi)(shi)電(dian)除(chu)(chu)塵(chen)(chen)(chen)器(qi)和(he)與(yu)干(gan)式(shi)(shi)(shi)電(dian)除(chu)(chu)塵(chen)(chen)(chen)器(qi)的(de)(de)(de)收(shou)塵(chen)(chen)(chen)原理相(xiang)同(tong),都是靠高壓電(dian)暈放電(dian)使得粉塵(chen)(chen)(chen)荷(he)電(dian),荷(he)電(dian)后(hou)的(de)(de)(de)粉塵(chen)(chen)(chen)在電(dian)場(chang)力的(de)(de)(de)作(zuo)用下(xia)到(dao)達集(ji)(ji)塵(chen)(chen)(chen)板(ban)/管。干(gan)式(shi)(shi)(shi)電(dian)收(shou)塵(chen)(chen)(chen)器(qi)主(zhu)要處理含水很低的(de)(de)(de)干(gan)氣體(ti),濕(shi)式(shi)(shi)(shi)電(dian)除(chu)(chu)塵(chen)(chen)(chen)器(qi)主(zhu)要處理含水較高乃至飽和(he)的(de)(de)(de)濕(shi)氣體(ti)。在對集(ji)(ji)塵(chen)(chen)(chen)板(ban)/管上捕集(ji)(ji)到(dao)的(de)(de)(de)粉塵(chen)(chen)(chen)清(qing)除(chu)(chu)方式(shi)(shi)(shi)上WESP與(yu)DESP有(you)較大區別,干(gan)式(shi)(shi)(shi)電(dian)除(chu)(chu)塵(chen)(chen)(chen)器(qi)一般采(cai)用機械振打(da)或聲(sheng)波清(qing)灰等方式(shi)(shi)(shi)清(qing)除(chu)(chu)電(dian)極上的(de)(de)(de)積灰,而(er)濕(shi)式(shi)(shi)(shi)電(dian)除(chu)(chu)塵(chen)(chen)(chen)器(qi)則采(cai)用定期沖(chong)洗(xi)的(de)(de)(de)方式(shi)(shi)(shi),使粉塵(chen)(chen)(chen)隨著沖(chong)刷液的(de)(de)(de)流動而(er)清(qing)除(chu)(chu)。