臥式靜電除塵器是眾多除塵器當中的一種,臥式靜電除塵器是以靜電凈化法來收捕廢氣中的粉塵的設備,其主要是讓含塵氣體進人氣刺叭時,含塵氣體受到氣流分布板以及折流板的調整后,使氣流能較均勻地進人電場。
臥式靜(jing)電(dian)除塵(chen)(chen)器是(shi)以(yi)靜(jing)電(dian)凈(jing)化法(fa)來(lai)收(shou)捕廢(fei)氣(qi)(qi)中的(de)(de)(de)粉(fen)塵(chen)(chen),它的(de)(de)(de)凈(jing)化工作(zuo)(zuo)上要是(shi)依靠電(dian)暈極(ji)和(he)沉(chen)淀兩個系統(tong)來(lai)完成的(de)(de)(de),當(dang)含(han)塵(chen)(chen)氣(qi)(qi)體(ti)進(jin)人(ren)氣(qi)(qi)刺叭時,含(han)塵(chen)(chen)氣(qi)(qi)體(ti)受(shou)到氣(qi)(qi)流(liu)(liu)分布(bu)板以(yi)及折流(liu)(liu)板的(de)(de)(de)調整后,使氣(qi)(qi)流(liu)(liu)能較(jiao)均勻地進(jin)人(ren)電(dian)場(chang)(chang)。在(zai)(zai)橫(heng)斷面(mian)擴大的(de)(de)(de)作(zuo)(zuo)用下(xia),氣(qi)(qi)流(liu)(liu)速(su)度(du)迅速(su)降低,其中有些(xie)較(jiao)重的(de)(de)(de)塵(chen)(chen)粒(li)便失去速(su)度(du)而(er)沉(chen)降下(xia)來(lai)。進(jin)人(ren)電(dian)場(chang)(chang)的(de)(de)(de)含(han)塵(chen)(chen)氣(qi)(qi)體(ti)由于電(dian)暈極(ji)通人(ren)高(gao)壓直(zhi)流(liu)(liu)電(dian),則在(zai)(zai)電(dian)暈極(ji)附近產生電(dian)暈現(xian)象(xiang),使氣(qi)(qi)體(ti)電(dian)離(li)(li),電(dian)離(li)(li)后的(de)(de)(de)氣(qi)(qi)體(ti)中存(cun)在(zai)(zai)大量的(de)(de)(de)電(dian)子(zi)(zi)和(he)離(li)(li)子(zi)(zi),這些(xie)電(dian)子(zi)(zi)和(he)離(li)(li)子(zi)(zi)與進(jin)人(ren)電(dian)場(chang)(chang)的(de)(de)(de)粉(fen)塵(chen)(chen)結合起來(lai),使塵(chen)(chen)粒(li)帶電(dian),帶電(dian)塵(chen)(chen)粒(li)在(zai)(zai)電(dian)場(chang)(chang)力(li)的(de)(de)(de)作(zuo)(zuo)用下(xia)趨向本設(she)備陽極(ji)(正(zheng)極(ji)、本設(she)備采(cai)用負(fu)高(gao)壓制)和(he)陰極(ji)(負(fu)極(ji)) , 釋放(fang)出電(dian)子(zi)(zi)分別沉(chen)積在(zai)(zai)相(xiang)應的(de)(de)(de)電(dian)極(ji)上,通過設(she)備陰陽極(ji)振(zhen)(zhen)打系統(tong)的(de)(de)(de)振(zhen)(zhen)打,使沉(chen)積在(zai)(zai)陰陽電(dian)極(ji)上的(de)(de)(de)粉(fen)塵(chen)(chen)振(zhen)(zhen)落(luo),進(jin)人(ren)集灰(hui)斗 通過排(pai)(pai)灰(hui)裝置放(fang)出,回收(shou)有物料,被(bei))凈(jing)化的(de)(de)(de)氣(qi)(qi)體(ti)排(pai)(pai)入大氣(qi)(qi)。
工(gong)作(zuo)原理
靜(jing)電(dian)(dian)(dian)(dian)(dian)(dian)除塵(chen)(chen)器的(de)工(gong)作原理是(shi)利用高壓電(dian)(dian)(dian)(dian)(dian)(dian)場使煙(yan)氣(qi)(qi)發生(sheng)電(dian)(dian)(dian)(dian)(dian)(dian)離(li)(li),氣(qi)(qi)流(liu)中的(de)粉塵(chen)(chen)荷電(dian)(dian)(dian)(dian)(dian)(dian)在(zai)電(dian)(dian)(dian)(dian)(dian)(dian)場作用下(xia)與氣(qi)(qi)流(liu)分離(li)(li)。負極(ji)(ji)(ji)由(you)不(bu)同斷面(mian)形(xing)狀的(de)金屬導(dao)線(xian)制成(cheng),叫放電(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)。正極(ji)(ji)(ji)由(you)不(bu)同幾何(he)形(xing)狀的(de)金屬板制成(cheng),叫集(ji)塵(chen)(chen)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)。靜(jing)電(dian)(dian)(dian)(dian)(dian)(dian)除塵(chen)(chen)器的(de)性(xing)(xing)能受粉塵(chen)(chen)性(xing)(xing)質、設備(bei)構造(zao)和煙(yan)氣(qi)(qi)流(liu)速等三個因(yin)素的(de)影響(xiang)。粉塵(chen)(chen)的(de)比(bi)電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)是(shi)評價導(dao)電(dian)(dian)(dian)(dian)(dian)(dian)性(xing)(xing)的(de)指標,它對除塵(chen)(chen)效率(lv)有直接的(de)影響(xiang)。比(bi)電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)過低,塵(chen)(chen)粒難(nan)以保(bao)持(chi)在(zai)集(ji)塵(chen)(chen)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)上,致使其重返氣(qi)(qi)流(liu)。比(bi)電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)過高,到(dao)達集(ji)塵(chen)(chen)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)的(de)塵(chen)(chen)粒電(dian)(dian)(dian)(dian)(dian)(dian)荷不(bu)易放出,在(zai)塵(chen)(chen)層之間形(xing)成(cheng)電(dian)(dian)(dian)(dian)(dian)(dian)壓梯度會產生(sheng)局部擊穿和放電(dian)(dian)(dian)(dian)(dian)(dian)現象。這(zhe)些情(qing)況都會造(zao)成(cheng)除塵(chen)(chen)效率(lv)下(xia)降。
電除塵器的(de)基(ji)本(ben)原理(li)是(shi)利用電力(li)捕集煙氣中的(de)粉塵,主要包括以下四個相互有關的(de)物理(li)過(guo)程: (1) 氣體(ti)的(de)電離。(2) 粉塵的(de)荷電。(3) 荷電粉塵向電極移動。(4) 荷電粉塵的(de)捕集。