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(shi)靜(jing)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)器是(shi)以靜(jing)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)凈(jing)化法來收捕廢氣(qi)(qi)(qi)中(zhong)的(de)粉(fen)(fen)塵(chen)(chen)(chen),它的(de)凈(jing)化工作(zuo)(zuo)上要(yao)是(shi)依靠電(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈極(ji)和(he)沉(chen)淀(dian)兩個系統(tong)來完(wan)成的(de),當含(han)塵(chen)(chen)(chen)氣(qi)(qi)(qi)體(ti)(ti)進(jin)(jin)(jin)人(ren)(ren)氣(qi)(qi)(qi)刺叭時,含(han)塵(chen)(chen)(chen)氣(qi)(qi)(qi)體(ti)(ti)受到(dao)氣(qi)(qi)(qi)流(liu)分(fen)布板(ban)以及折流(liu)板(ban)的(de)調整后(hou),使(shi)氣(qi)(qi)(qi)流(liu)能較均勻地進(jin)(jin)(jin)人(ren)(ren)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)場(chang)(chang)。在(zai)(zai)橫斷面擴大的(de)作(zuo)(zuo)用下(xia)(xia),氣(qi)(qi)(qi)流(liu)速度迅速降低,其中(zhong)有(you)些較重的(de)塵(chen)(chen)(chen)粒(li)便(bian)失(shi)去速度而沉(chen)降下(xia)(xia)來。進(jin)(jin)(jin)人(ren)(ren)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)場(chang)(chang)的(de)含(han)塵(chen)(chen)(chen)氣(qi)(qi)(qi)體(ti)(ti)由(you)于(yu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈極(ji)通(tong)(tong)人(ren)(ren)高壓(ya)直流(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian),則在(zai)(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈極(ji)附近產(chan)生電(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈現象(xiang),使(shi)氣(qi)(qi)(qi)體(ti)(ti)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)離,電(dian)(dian)(dian)(dian)(dian)(dian)(dian)離后(hou)的(de)氣(qi)(qi)(qi)體(ti)(ti)中(zhong)存在(zai)(zai)大量的(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)子和(he)離子,這些電(dian)(dian)(dian)(dian)(dian)(dian)(dian)子和(he)離子與進(jin)(jin)(jin)人(ren)(ren)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)場(chang)(chang)的(de)粉(fen)(fen)塵(chen)(chen)(chen)結合起來,使(shi)塵(chen)(chen)(chen)粒(li)帶電(dian)(dian)(dian)(dian)(dian)(dian)(dian),帶電(dian)(dian)(dian)(dian)(dian)(dian)(dian)塵(chen)(chen)(chen)粒(li)在(zai)(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)場(chang)(chang)力(li)的(de)作(zuo)(zuo)用下(xia)(xia)趨向本設(she)備陽極(ji)(正極(ji)、本設(she)備采用負高壓(ya)制(zhi))和(he)陰(yin)極(ji)(負極(ji)) , 釋放(fang)出電(dian)(dian)(dian)(dian)(dian)(dian)(dian)子分(fen)別沉(chen)積在(zai)(zai)相應的(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)上,通(tong)(tong)過(guo)(guo)設(she)備陰(yin)陽極(ji)振(zhen)打系統(tong)的(de)振(zhen)打,使(shi)沉(chen)積在(zai)(zai)陰(yin)陽電(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)上的(de)粉(fen)(fen)塵(chen)(chen)(chen)振(zhen)落,進(jin)(jin)(jin)人(ren)(ren)集(ji)灰斗 通(tong)(tong)過(guo)(guo)排(pai)灰裝置放(fang)出,回收有(you)物(wu)料,被)凈(jing)化的(de)氣(qi)(qi)(qi)體(ti)(ti)排(pai)入(ru)大氣(qi)(qi)(qi)。
工作原理
靜電除(chu)(chu)塵(chen)(chen)器(qi)的(de)(de)工作原理是(shi)利用(yong)(yong)高壓電場使煙(yan)氣(qi)(qi)發(fa)生電離,氣(qi)(qi)流(liu)中的(de)(de)粉(fen)塵(chen)(chen)荷(he)電在(zai)(zai)(zai)電場作用(yong)(yong)下(xia)與氣(qi)(qi)流(liu)分(fen)離。負極(ji)(ji)由不(bu)同斷面形狀(zhuang)的(de)(de)金(jin)屬(shu)導線制成,叫放電電極(ji)(ji)。正(zheng)極(ji)(ji)由不(bu)同幾何形狀(zhuang)的(de)(de)金(jin)屬(shu)板(ban)制成,叫集塵(chen)(chen)電極(ji)(ji)。靜電除(chu)(chu)塵(chen)(chen)器(qi)的(de)(de)性(xing)能受粉(fen)塵(chen)(chen)性(xing)質、設備構(gou)造和煙(yan)氣(qi)(qi)流(liu)速等(deng)三(san)個(ge)因素的(de)(de)影響(xiang)(xiang)。粉(fen)塵(chen)(chen)的(de)(de)比電阻(zu)是(shi)評價導電性(xing)的(de)(de)指標,它對除(chu)(chu)塵(chen)(chen)效(xiao)率有直接的(de)(de)影響(xiang)(xiang)。比電阻(zu)過低,塵(chen)(chen)粒難以保持(chi)在(zai)(zai)(zai)集塵(chen)(chen)電極(ji)(ji)上,致使其重(zhong)返氣(qi)(qi)流(liu)。比電阻(zu)過高,到(dao)達(da)集塵(chen)(chen)電極(ji)(ji)的(de)(de)塵(chen)(chen)粒電荷(he)不(bu)易(yi)放出(chu),在(zai)(zai)(zai)塵(chen)(chen)層(ceng)之(zhi)間(jian)形成電壓梯度會產生局部擊穿(chuan)和放電現象。這些情況(kuang)都會造成除(chu)(chu)塵(chen)(chen)效(xiao)率下(xia)降。
電(dian)(dian)除塵(chen)(chen)器(qi)的(de)基本原理(li)是利用(yong)電(dian)(dian)力捕(bu)集(ji)煙(yan)氣中的(de)粉(fen)(fen)塵(chen)(chen),主要包括以下四個相互有(you)關(guan)的(de)物理(li)過程: (1) 氣體(ti)的(de)電(dian)(dian)離(li)。(2) 粉(fen)(fen)塵(chen)(chen)的(de)荷(he)電(dian)(dian)。(3) 荷(he)電(dian)(dian)粉(fen)(fen)塵(chen)(chen)向電(dian)(dian)極移動。(4) 荷(he)電(dian)(dian)粉(fen)(fen)塵(chen)(chen)的(de)捕(bu)集(ji)。