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)式電(dian)除塵器(qi)主要有兩(liang)種(zhong)(zhong)結(jie)構形式,一種(zhong)(zhong)是(shi)使(shi)用耐(nai)腐蝕導電(dian)材(cai)料(可以為(wei)導電(dian)性(xing)能優(you)良的(de)(de)的(de)(de)非金(jin)(jin)屬(shu)材(cai)料或(huo)具有耐(nai)腐蝕特(te)性(xing)的(de)(de)金(jin)(jin)屬(shu)材(cai)料)做集塵極(ji),另一種(zhong)(zhong)是(shi)用通過噴水或(huo)溢流水形成導電(dian)水膜(mo),利用不導電(dian)的(de)(de)非金(jin)(jin)屬(shu)材(cai)料做集塵極(ji)。
收塵原(yuan)理
濕式(shi)(shi)(shi)電(dian)(dian)除(chu)(chu)塵(chen)器(qi)(qi)和與干式(shi)(shi)(shi)電(dian)(dian)除(chu)(chu)塵(chen)器(qi)(qi)的(de)收(shou)塵(chen)原理(li)相同,都是靠高(gao)壓電(dian)(dian)暈放電(dian)(dian)使得粉(fen)(fen)塵(chen)荷(he)電(dian)(dian),荷(he)電(dian)(dian)后的(de)粉(fen)(fen)塵(chen)在電(dian)(dian)場(chang)力的(de)作(zuo)用(yong)下到達集(ji)塵(chen)板/管。干式(shi)(shi)(shi)電(dian)(dian)收(shou)塵(chen)器(qi)(qi)主(zhu)要(yao)處(chu)理(li)含水(shui)很低的(de)干氣(qi)體,濕式(shi)(shi)(shi)電(dian)(dian)除(chu)(chu)塵(chen)器(qi)(qi)主(zhu)要(yao)處(chu)理(li)含水(shui)較(jiao)高(gao)乃至飽(bao)和的(de)濕氣(qi)體。在對集(ji)塵(chen)板/管上捕集(ji)到的(de)粉(fen)(fen)塵(chen)清(qing)除(chu)(chu)方式(shi)(shi)(shi)上WESP與DESP有較(jiao)大區別,干式(shi)(shi)(shi)電(dian)(dian)除(chu)(chu)塵(chen)器(qi)(qi)一般采(cai)用(yong)機械振打或聲(sheng)波清(qing)灰(hui)等方式(shi)(shi)(shi)清(qing)除(chu)(chu)電(dian)(dian)極上的(de)積灰(hui),而濕式(shi)(shi)(shi)電(dian)(dian)除(chu)(chu)塵(chen)器(qi)(qi)則采(cai)用(yong)定期沖(chong)洗的(de)方式(shi)(shi)(shi),使粉(fen)(fen)塵(chen)隨著(zhu)沖(chong)刷液(ye)的(de)流動而清(qing)除(chu)(chu)。