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)器主要有兩種(zhong)結構形式,一種(zhong)是使用耐(nai)腐蝕(shi)導(dao)電(dian)材料(liao)(可以(yi)為導(dao)電(dian)性(xing)(xing)能優(you)良(liang)的(de)的(de)非(fei)金(jin)(jin)屬(shu)(shu)材料(liao)或(huo)具有耐(nai)腐蝕(shi)特(te)性(xing)(xing)的(de)金(jin)(jin)屬(shu)(shu)材料(liao))做集塵(chen)極,另一種(zhong)是用通過噴水或(huo)溢流(liu)水形成導(dao)電(dian)水膜(mo),利(li)用不導(dao)電(dian)的(de)非(fei)金(jin)(jin)屬(shu)(shu)材料(liao)做集塵(chen)極。
收塵(chen)原(yuan)理
濕(shi)式(shi)(shi)(shi)(shi)電(dian)(dian)(dian)除塵(chen)器(qi)和與干(gan)式(shi)(shi)(shi)(shi)電(dian)(dian)(dian)除塵(chen)器(qi)的(de)(de)(de)(de)收塵(chen)原理(li)相同,都是靠高(gao)壓電(dian)(dian)(dian)暈放電(dian)(dian)(dian)使(shi)得粉塵(chen)荷電(dian)(dian)(dian),荷電(dian)(dian)(dian)后的(de)(de)(de)(de)粉塵(chen)在(zai)電(dian)(dian)(dian)場(chang)力的(de)(de)(de)(de)作用下到達集塵(chen)板/管。干(gan)式(shi)(shi)(shi)(shi)電(dian)(dian)(dian)收塵(chen)器(qi)主(zhu)要(yao)(yao)處(chu)(chu)理(li)含水(shui)很低(di)的(de)(de)(de)(de)干(gan)氣體,濕(shi)式(shi)(shi)(shi)(shi)電(dian)(dian)(dian)除塵(chen)器(qi)主(zhu)要(yao)(yao)處(chu)(chu)理(li)含水(shui)較高(gao)乃至飽和的(de)(de)(de)(de)濕(shi)氣體。在(zai)對集塵(chen)板/管上(shang)捕集到的(de)(de)(de)(de)粉塵(chen)清除方式(shi)(shi)(shi)(shi)上(shang)WESP與DESP有(you)較大區別(bie),干(gan)式(shi)(shi)(shi)(shi)電(dian)(dian)(dian)除塵(chen)器(qi)一般采(cai)用機械振打(da)或聲波清灰(hui)等方式(shi)(shi)(shi)(shi)清除電(dian)(dian)(dian)極(ji)上(shang)的(de)(de)(de)(de)積灰(hui),而濕(shi)式(shi)(shi)(shi)(shi)電(dian)(dian)(dian)除塵(chen)器(qi)則(ze)采(cai)用定期沖洗的(de)(de)(de)(de)方式(shi)(shi)(shi)(shi),使(shi)粉塵(chen)隨著沖刷液的(de)(de)(de)(de)流動而清除。