電袋復合式除塵器是結合了靜電除塵和布袋除塵的特點,通過前電場的預收塵、荷電作用和后濾袋區過濾除塵的一種除塵器,它發揮電除塵器和布袋除塵器各自的除塵,以及兩者相結合產生新的性能優點,彌補了電除塵器和布袋除塵器的除塵缺點。該復合型除塵器具高、穩定、濾袋阻力低、占地面積小等優點,是未來控制細微顆粒粉塵、PM2.5以及重金屬汞等多污染物協同處理的主要技術手段。
電(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)(yun)極的(de)(de)(de)型式有好多(duo)種,放電(dian)(dian)(dian)(dian)(dian)(dian)尖(jian)角越(yue)多(duo)則電(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)(yun)的(de)(de)(de)也就越(yue)好,但是(shi)(shi)(shi)放電(dian)(dian)(dian)(dian)(dian)(dian)尖(jian)角越(yue)多(duo),制作及安裝較為難題.電(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)(yun)線(xian)一般都(dou)接有高壓電(dian)(dian)(dian)(dian)(dian)(dian),需要有良(liang)好的(de)(de)(de)絕緣裝置,電(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)(yun)線(xian)之間(jian)的(de)(de)(de)間(jian)隔要適當(dang),間(jian)隔太遠影響電(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)(yun)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)流,間(jian)隔太近,電(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)(yun)線(xian)間(jian)可能(neng)會產(chan)生屏弊現(xian)象,造成電(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)(yun)線(xian)表(biao)面電(dian)(dian)(dian)(dian)(dian)(dian)場強度減弱.集塵(chen)集塵(chen)的(de)(de)(de)上下(xia)部都(dou)是(shi)(shi)(shi)固(gu)定的(de)(de)(de),并且集塵(chen)極都(dou)是(shi)(shi)(shi)接地.一般要求粉塵(chen)易于(yu)沉降在(zai)板上,在(zai)振打(da)的(de)(de)(de)時候所產(chan)生的(de)(de)(de)二次揚(yang)塵(chen)少,同時還要求板較為輕便,又要有的(de)(de)(de)剛度,振打(da)時粉塵(chen)易于(yu)沉落(luo)又不(bu)會發(fa)生變(bian)形。
由于在電袋復合式除塵器中,煙氣先通過電除塵區后再緩慢進入后布袋除塵區,布袋除塵區捕集的粉塵量入口的1/4。這樣濾袋的粉塵負荷量大大,電袋復合除塵器清灰周期得(de)以大幅(fu)度(du)延長;粉塵經過(guo)電(dian)除(chu)塵區電(dian)離(li)荷電(dian),粉塵的(de)(de)荷電(dian)了(le)粉塵在濾(lv)袋上(shang)的(de)(de)過(guo)濾(lv)特性(xing)(xing),即濾(lv)袋的(de)(de)透氣性(xing)(xing)能(neng)、清灰性(xing)(xing)能(neng)方(fang)(fang)面得(de)到大大的(de)(de)。合理運用電(dian)除(chu)塵器和(he)布(bu)袋除(chu)塵器各自的(de)(de)除(chu)塵優(you)點,以及兩(liang)者相結合產(chan)生新的(de)(de)功能(neng),能(neng)充(chong)分克服(fu)電(dian)除(chu)塵和(he)布(bu)袋除(chu)塵的(de)(de)除(chu)塵缺點。根據目前的(de)(de)試驗研究和(he)在電(dian)力鍋爐煙塵的(de)(de)工業應用,證明該是一種(zhong)科學、綜合了(le)二種(zhong)除(chu)塵方(fang)(fang)式的(de)(de)優(you)點。
靜電(dian)除(chu)塵器陽板C480型陽板接高壓直(zhi)流電(dian)源的(de)(de)陰線和接地的(de)(de)陽板之間形成高壓電(dian)場(chang),由于陰發生電(dian)暈放(fang)電(dian),氣體被(bei)電(dian)離,帶負電(dian)的(de)(de)氣體離子(zi),在(zai)電(dian)場(chang)力的(de)(de)作用下,向陽板運動(dong)(dong),在(zai)運動(dong)(dong)中(zhong)與粉塵顆粒(li)相碰,則使塵粒(li)荷(he)以負電(dian),荷(he)電(dian)后的(de)(de)塵粒(li)在(zai)電(dian)場(chang)力的(de)(de)作用下,亦(yi)向陽運動(dong)(dong),到(dao)達陽后,放(fang)出(chu)負電(dian)荷(he),塵粒(li)則沉積于陽板上,而得到(dao)凈化的(de)(de)氣體排出(chu)塵器外。