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。
臥式靜電(dian)(dian)(dian)除(chu)塵器是(shi)以(yi)(yi)靜電(dian)(dian)(dian)凈(jing)化法來收捕廢氣(qi)(qi)中(zhong)的(de)(de)(de)(de)(de)(de)粉塵,它的(de)(de)(de)(de)(de)(de)凈(jing)化工作上要是(shi)依靠電(dian)(dian)(dian)暈(yun)極(ji)(ji)和(he)沉(chen)(chen)淀兩(liang)個系(xi)統(tong)來完成的(de)(de)(de)(de)(de)(de),當含(han)塵氣(qi)(qi)體(ti)(ti)進(jin)(jin)(jin)人(ren)(ren)氣(qi)(qi)刺叭時(shi),含(han)塵氣(qi)(qi)體(ti)(ti)受到氣(qi)(qi)流(liu)分(fen)布板(ban)以(yi)(yi)及(ji)折流(liu)板(ban)的(de)(de)(de)(de)(de)(de)調(diao)整后(hou),使氣(qi)(qi)流(liu)能(neng)較(jiao)均勻(yun)地進(jin)(jin)(jin)人(ren)(ren)電(dian)(dian)(dian)場(chang)。在(zai)(zai)橫斷面擴大的(de)(de)(de)(de)(de)(de)作用下(xia),氣(qi)(qi)流(liu)速度(du)迅速降低,其(qi)中(zhong)有(you)些(xie)較(jiao)重的(de)(de)(de)(de)(de)(de)塵粒(li)便失去速度(du)而(er)沉(chen)(chen)降下(xia)來。進(jin)(jin)(jin)人(ren)(ren)電(dian)(dian)(dian)場(chang)的(de)(de)(de)(de)(de)(de)含(han)塵氣(qi)(qi)體(ti)(ti)由于電(dian)(dian)(dian)暈(yun)極(ji)(ji)通(tong)(tong)人(ren)(ren)高壓(ya)直流(liu)電(dian)(dian)(dian),則(ze)在(zai)(zai)電(dian)(dian)(dian)暈(yun)極(ji)(ji)附近產生(sheng)電(dian)(dian)(dian)暈(yun)現(xian)象,使氣(qi)(qi)體(ti)(ti)電(dian)(dian)(dian)離(li),電(dian)(dian)(dian)離(li)后(hou)的(de)(de)(de)(de)(de)(de)氣(qi)(qi)體(ti)(ti)中(zhong)存(cun)在(zai)(zai)大量的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)子和(he)離(li)子,這些(xie)電(dian)(dian)(dian)子和(he)離(li)子與(yu)進(jin)(jin)(jin)人(ren)(ren)電(dian)(dian)(dian)場(chang)的(de)(de)(de)(de)(de)(de)粉塵結合起來,使塵粒(li)帶電(dian)(dian)(dian),帶電(dian)(dian)(dian)塵粒(li)在(zai)(zai)電(dian)(dian)(dian)場(chang)力的(de)(de)(de)(de)(de)(de)作用下(xia)趨向(xiang)本設(she)備(bei)陽(yang)極(ji)(ji)(正極(ji)(ji)、本設(she)備(bei)采用負(fu)高壓(ya)制)和(he)陰極(ji)(ji)(負(fu)極(ji)(ji)) , 釋放(fang)(fang)出(chu)電(dian)(dian)(dian)子分(fen)別沉(chen)(chen)積在(zai)(zai)相應的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)極(ji)(ji)上,通(tong)(tong)過(guo)(guo)設(she)備(bei)陰陽(yang)極(ji)(ji)振(zhen)打系(xi)統(tong)的(de)(de)(de)(de)(de)(de)振(zhen)打,使沉(chen)(chen)積在(zai)(zai)陰陽(yang)電(dian)(dian)(dian)極(ji)(ji)上的(de)(de)(de)(de)(de)(de)粉塵振(zhen)落,進(jin)(jin)(jin)人(ren)(ren)集灰斗 通(tong)(tong)過(guo)(guo)排(pai)(pai)灰裝置(zhi)放(fang)(fang)出(chu),回(hui)收有(you)物料(liao),被)凈(jing)化的(de)(de)(de)(de)(de)(de)氣(qi)(qi)體(ti)(ti)排(pai)(pai)入大氣(qi)(qi)。
工作原(yuan)理
靜電(dian)除(chu)塵(chen)(chen)(chen)器的(de)工作原(yuan)理(li)是(shi)利用(yong)高壓電(dian)場(chang)使煙(yan)氣發(fa)生電(dian)離(li),氣流中(zhong)的(de)粉(fen)塵(chen)(chen)(chen)荷(he)電(dian)在(zai)電(dian)場(chang)作用(yong)下(xia)與氣流分離(li)。負(fu)極(ji)由不同(tong)斷面(mian)形狀(zhuang)的(de)金(jin)屬(shu)導線(xian)制(zhi)成,叫放(fang)電(dian)電(dian)極(ji)。正極(ji)由不同(tong)幾何形狀(zhuang)的(de)金(jin)屬(shu)板制(zhi)成,叫集塵(chen)(chen)(chen)電(dian)極(ji)。靜電(dian)除(chu)塵(chen)(chen)(chen)器的(de)性(xing)能受粉(fen)塵(chen)(chen)(chen)性(xing)質、設備構造和煙(yan)氣流速等三(san)個(ge)因素(su)的(de)影響。粉(fen)塵(chen)(chen)(chen)的(de)比電(dian)阻是(shi)評價導電(dian)性(xing)的(de)指標,它對除(chu)塵(chen)(chen)(chen)效率(lv)有直接的(de)影響。比電(dian)阻過低(di),塵(chen)(chen)(chen)粒(li)(li)難以(yi)保持在(zai)集塵(chen)(chen)(chen)電(dian)極(ji)上,致(zhi)使其重返氣流。比電(dian)阻過高,到達集塵(chen)(chen)(chen)電(dian)極(ji)的(de)塵(chen)(chen)(chen)粒(li)(li)電(dian)荷(he)不易放(fang)出,在(zai)塵(chen)(chen)(chen)層之間(jian)形成電(dian)壓梯(ti)度會(hui)產生局部擊穿和放(fang)電(dian)現(xian)象(xiang)。這些情(qing)況都會(hui)造成除(chu)塵(chen)(chen)(chen)效率(lv)下(xia)降(jiang)。
電(dian)(dian)(dian)(dian)除塵器的(de)(de)(de)基本原理是利(li)用電(dian)(dian)(dian)(dian)力捕集(ji)(ji)煙氣中的(de)(de)(de)粉(fen)塵,主要包括以下四個相(xiang)互有關的(de)(de)(de)物理過程: (1) 氣體的(de)(de)(de)電(dian)(dian)(dian)(dian)離。(2) 粉(fen)塵的(de)(de)(de)荷電(dian)(dian)(dian)(dian)。(3) 荷電(dian)(dian)(dian)(dian)粉(fen)塵向電(dian)(dian)(dian)(dian)極(ji)移動。(4) 荷電(dian)(dian)(dian)(dian)粉(fen)塵的(de)(de)(de)捕集(ji)(ji)。