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)(dian)除塵(chen)器主(zhu)要有(you)兩種(zhong)結(jie)構形式,一種(zhong)是(shi)使用(yong)耐(nai)腐(fu)蝕導電(dian)(dian)材(cai)料(可以為導電(dian)(dian)性(xing)能優良(liang)的的非金(jin)屬材(cai)料或具有(you)耐(nai)腐(fu)蝕特性(xing)的金(jin)屬材(cai)料)做(zuo)集塵(chen)極,另(ling)一種(zhong)是(shi)用(yong)通過(guo)噴(pen)水或溢流水形成導電(dian)(dian)水膜(mo),利用(yong)不(bu)導電(dian)(dian)的非金(jin)屬材(cai)料做(zuo)集塵(chen)極。
收(shou)塵原(yuan)理
濕(shi)式(shi)(shi)電(dian)(dian)除(chu)塵(chen)(chen)(chen)(chen)器和與干(gan)式(shi)(shi)電(dian)(dian)除(chu)塵(chen)(chen)(chen)(chen)器的(de)(de)收塵(chen)(chen)(chen)(chen)原理(li)相同,都是靠高(gao)壓電(dian)(dian)暈放電(dian)(dian)使得粉(fen)塵(chen)(chen)(chen)(chen)荷電(dian)(dian),荷電(dian)(dian)后的(de)(de)粉(fen)塵(chen)(chen)(chen)(chen)在電(dian)(dian)場(chang)力的(de)(de)作用(yong)(yong)下到達集塵(chen)(chen)(chen)(chen)板(ban)/管(guan)。干(gan)式(shi)(shi)電(dian)(dian)收塵(chen)(chen)(chen)(chen)器主要處理(li)含(han)水很(hen)低的(de)(de)干(gan)氣(qi)體(ti)(ti),濕(shi)式(shi)(shi)電(dian)(dian)除(chu)塵(chen)(chen)(chen)(chen)器主要處理(li)含(han)水較(jiao)高(gao)乃至(zhi)飽和的(de)(de)濕(shi)氣(qi)體(ti)(ti)。在對集塵(chen)(chen)(chen)(chen)板(ban)/管(guan)上(shang)捕集到的(de)(de)粉(fen)塵(chen)(chen)(chen)(chen)清除(chu)方式(shi)(shi)上(shang)WESP與DESP有較(jiao)大區別,干(gan)式(shi)(shi)電(dian)(dian)除(chu)塵(chen)(chen)(chen)(chen)器一般采(cai)用(yong)(yong)機械振打或(huo)聲(sheng)波清灰(hui)等方式(shi)(shi)清除(chu)電(dian)(dian)極(ji)上(shang)的(de)(de)積灰(hui),而(er)濕(shi)式(shi)(shi)電(dian)(dian)除(chu)塵(chen)(chen)(chen)(chen)器則采(cai)用(yong)(yong)定期沖洗的(de)(de)方式(shi)(shi),使粉(fen)塵(chen)(chen)(chen)(chen)隨著沖刷液(ye)的(de)(de)流動(dong)而(er)清除(chu)。