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)(dian)(dian)(dian)(dian)(dian)除塵(chen)(chen)(chen)(chen)器是以靜(jing)電(dian)(dian)(dian)(dian)(dian)(dian)凈(jing)化(hua)法來收捕廢(fei)氣(qi)中的(de)(de)(de)粉(fen)塵(chen)(chen)(chen)(chen),它的(de)(de)(de)凈(jing)化(hua)工作(zuo)上要是依靠電(dian)(dian)(dian)(dian)(dian)(dian)暈極(ji)(ji)(ji)和沉淀(dian)兩個系(xi)統(tong)來完成的(de)(de)(de),當(dang)含塵(chen)(chen)(chen)(chen)氣(qi)體(ti)(ti)(ti)進(jin)(jin)人(ren)氣(qi)刺叭時,含塵(chen)(chen)(chen)(chen)氣(qi)體(ti)(ti)(ti)受到氣(qi)流(liu)分(fen)布(bu)板(ban)以及折流(liu)板(ban)的(de)(de)(de)調整后(hou),使(shi)(shi)氣(qi)流(liu)能較均勻地進(jin)(jin)人(ren)電(dian)(dian)(dian)(dian)(dian)(dian)場(chang)(chang)。在(zai)橫(heng)斷面擴(kuo)大的(de)(de)(de)作(zuo)用下,氣(qi)流(liu)速度迅速降低,其中有(you)些較重的(de)(de)(de)塵(chen)(chen)(chen)(chen)粒(li)便失去速度而(er)沉降下來。進(jin)(jin)人(ren)電(dian)(dian)(dian)(dian)(dian)(dian)場(chang)(chang)的(de)(de)(de)含塵(chen)(chen)(chen)(chen)氣(qi)體(ti)(ti)(ti)由于電(dian)(dian)(dian)(dian)(dian)(dian)暈極(ji)(ji)(ji)通人(ren)高(gao)壓(ya)直流(liu)電(dian)(dian)(dian)(dian)(dian)(dian),則在(zai)電(dian)(dian)(dian)(dian)(dian)(dian)暈極(ji)(ji)(ji)附近產生電(dian)(dian)(dian)(dian)(dian)(dian)暈現象,使(shi)(shi)氣(qi)體(ti)(ti)(ti)電(dian)(dian)(dian)(dian)(dian)(dian)離(li)(li),電(dian)(dian)(dian)(dian)(dian)(dian)離(li)(li)后(hou)的(de)(de)(de)氣(qi)體(ti)(ti)(ti)中存在(zai)大量的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)子和離(li)(li)子,這些電(dian)(dian)(dian)(dian)(dian)(dian)子和離(li)(li)子與進(jin)(jin)人(ren)電(dian)(dian)(dian)(dian)(dian)(dian)場(chang)(chang)的(de)(de)(de)粉(fen)塵(chen)(chen)(chen)(chen)結合起(qi)來,使(shi)(shi)塵(chen)(chen)(chen)(chen)粒(li)帶(dai)電(dian)(dian)(dian)(dian)(dian)(dian),帶(dai)電(dian)(dian)(dian)(dian)(dian)(dian)塵(chen)(chen)(chen)(chen)粒(li)在(zai)電(dian)(dian)(dian)(dian)(dian)(dian)場(chang)(chang)力(li)的(de)(de)(de)作(zuo)用下趨向本設備陽極(ji)(ji)(ji)(正極(ji)(ji)(ji)、本設備采用負(fu)高(gao)壓(ya)制)和陰極(ji)(ji)(ji)(負(fu)極(ji)(ji)(ji)) , 釋(shi)放出(chu)電(dian)(dian)(dian)(dian)(dian)(dian)子分(fen)別沉積(ji)在(zai)相(xiang)應的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)上,通過(guo)(guo)設備陰陽極(ji)(ji)(ji)振(zhen)打系(xi)統(tong)的(de)(de)(de)振(zhen)打,使(shi)(shi)沉積(ji)在(zai)陰陽電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)上的(de)(de)(de)粉(fen)塵(chen)(chen)(chen)(chen)振(zhen)落,進(jin)(jin)人(ren)集灰(hui)斗 通過(guo)(guo)排(pai)灰(hui)裝置放出(chu),回收有(you)物(wu)料,被)凈(jing)化(hua)的(de)(de)(de)氣(qi)體(ti)(ti)(ti)排(pai)入大氣(qi)。
工作(zuo)原理
靜電(dian)(dian)除(chu)塵(chen)(chen)(chen)器的(de)(de)(de)工作原理是(shi)(shi)利用高壓(ya)電(dian)(dian)場使煙氣發生電(dian)(dian)離,氣流中的(de)(de)(de)粉塵(chen)(chen)(chen)荷電(dian)(dian)在(zai)電(dian)(dian)場作用下與(yu)氣流分(fen)離。負極(ji)(ji)(ji)(ji)由不(bu)(bu)同斷(duan)面形狀(zhuang)的(de)(de)(de)金(jin)屬(shu)導線制成(cheng),叫放電(dian)(dian)電(dian)(dian)極(ji)(ji)(ji)(ji)。正極(ji)(ji)(ji)(ji)由不(bu)(bu)同幾(ji)何形狀(zhuang)的(de)(de)(de)金(jin)屬(shu)板制成(cheng),叫集(ji)塵(chen)(chen)(chen)電(dian)(dian)極(ji)(ji)(ji)(ji)。靜電(dian)(dian)除(chu)塵(chen)(chen)(chen)器的(de)(de)(de)性能(neng)受粉塵(chen)(chen)(chen)性質、設備構(gou)造和煙氣流速等(deng)三個因素的(de)(de)(de)影響。粉塵(chen)(chen)(chen)的(de)(de)(de)比(bi)電(dian)(dian)阻(zu)(zu)是(shi)(shi)評價導電(dian)(dian)性的(de)(de)(de)指標,它對(dui)除(chu)塵(chen)(chen)(chen)效(xiao)率有直接的(de)(de)(de)影響。比(bi)電(dian)(dian)阻(zu)(zu)過低,塵(chen)(chen)(chen)粒難(nan)以保(bao)持在(zai)集(ji)塵(chen)(chen)(chen)電(dian)(dian)極(ji)(ji)(ji)(ji)上(shang),致使其(qi)重(zhong)返氣流。比(bi)電(dian)(dian)阻(zu)(zu)過高,到達集(ji)塵(chen)(chen)(chen)電(dian)(dian)極(ji)(ji)(ji)(ji)的(de)(de)(de)塵(chen)(chen)(chen)粒電(dian)(dian)荷不(bu)(bu)易放出,在(zai)塵(chen)(chen)(chen)層之間(jian)形成(cheng)電(dian)(dian)壓(ya)梯度會產(chan)生局部擊(ji)穿(chuan)和放電(dian)(dian)現象(xiang)。這些情況都會造成(cheng)除(chu)塵(chen)(chen)(chen)效(xiao)率下降。
電(dian)除塵(chen)器(qi)的(de)基本原理是利用電(dian)力捕集煙氣(qi)中的(de)粉(fen)(fen)塵(chen),主要包括以(yi)下四個(ge)相互有關的(de)物理過程: (1) 氣(qi)體(ti)(ti)的(de)電(dian)離。(2) 粉(fen)(fen)塵(chen)的(de)荷電(dian)。(3) 荷電(dian)粉(fen)(fen)塵(chen)向電(dian)極(ji)移動(dong)。(4) 荷電(dian)粉(fen)(fen)塵(chen)的(de)捕集。