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(wo)式靜(jing)電(dian)(dian)(dian)(dian)除塵(chen)(chen)(chen)器是(shi)以靜(jing)電(dian)(dian)(dian)(dian)凈化(hua)法來(lai)(lai)收(shou)捕廢(fei)氣(qi)中(zhong)的(de)(de)(de)(de)粉(fen)塵(chen)(chen)(chen),它的(de)(de)(de)(de)凈化(hua)工(gong)作上(shang)要是(shi)依靠(kao)電(dian)(dian)(dian)(dian)暈(yun)(yun)極(ji)(ji)和(he)沉(chen)(chen)淀兩個(ge)系統來(lai)(lai)完成的(de)(de)(de)(de),當(dang)含(han)塵(chen)(chen)(chen)氣(qi)體(ti)(ti)進人氣(qi)刺叭時,含(han)塵(chen)(chen)(chen)氣(qi)體(ti)(ti)受到氣(qi)流(liu)分布板以及折流(liu)板的(de)(de)(de)(de)調整后,使氣(qi)流(liu)能較(jiao)均勻地進人電(dian)(dian)(dian)(dian)場(chang)(chang)。在(zai)橫(heng)斷面擴(kuo)大的(de)(de)(de)(de)作用(yong)(yong)下(xia)(xia),氣(qi)流(liu)速度迅速降低,其(qi)中(zhong)有(you)些較(jiao)重的(de)(de)(de)(de)塵(chen)(chen)(chen)粒(li)便失去速度而沉(chen)(chen)降下(xia)(xia)來(lai)(lai)。進人電(dian)(dian)(dian)(dian)場(chang)(chang)的(de)(de)(de)(de)含(han)塵(chen)(chen)(chen)氣(qi)體(ti)(ti)由于電(dian)(dian)(dian)(dian)暈(yun)(yun)極(ji)(ji)通人高(gao)壓(ya)直流(liu)電(dian)(dian)(dian)(dian),則在(zai)電(dian)(dian)(dian)(dian)暈(yun)(yun)極(ji)(ji)附(fu)近產生電(dian)(dian)(dian)(dian)暈(yun)(yun)現象,使氣(qi)體(ti)(ti)電(dian)(dian)(dian)(dian)離,電(dian)(dian)(dian)(dian)離后的(de)(de)(de)(de)氣(qi)體(ti)(ti)中(zhong)存在(zai)大量的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)子和(he)離子,這些電(dian)(dian)(dian)(dian)子和(he)離子與進人電(dian)(dian)(dian)(dian)場(chang)(chang)的(de)(de)(de)(de)粉(fen)塵(chen)(chen)(chen)結合起來(lai)(lai),使塵(chen)(chen)(chen)粒(li)帶電(dian)(dian)(dian)(dian),帶電(dian)(dian)(dian)(dian)塵(chen)(chen)(chen)粒(li)在(zai)電(dian)(dian)(dian)(dian)場(chang)(chang)力(li)的(de)(de)(de)(de)作用(yong)(yong)下(xia)(xia)趨(qu)向本設備(bei)陽(yang)極(ji)(ji)(正極(ji)(ji)、本設備(bei)采(cai)用(yong)(yong)負高(gao)壓(ya)制)和(he)陰(yin)極(ji)(ji)(負極(ji)(ji)) , 釋放出(chu)電(dian)(dian)(dian)(dian)子分別沉(chen)(chen)積(ji)(ji)在(zai)相應的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)極(ji)(ji)上(shang),通過(guo)設備(bei)陰(yin)陽(yang)極(ji)(ji)振(zhen)打(da)系統的(de)(de)(de)(de)振(zhen)打(da),使沉(chen)(chen)積(ji)(ji)在(zai)陰(yin)陽(yang)電(dian)(dian)(dian)(dian)極(ji)(ji)上(shang)的(de)(de)(de)(de)粉(fen)塵(chen)(chen)(chen)振(zhen)落,進人集灰斗(dou) 通過(guo)排灰裝置放出(chu),回收(shou)有(you)物料(liao),被)凈化(hua)的(de)(de)(de)(de)氣(qi)體(ti)(ti)排入大氣(qi)。
工作原理
靜電(dian)(dian)(dian)(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)(chen)(chen)器的(de)(de)(de)工作(zuo)原理(li)是利用高壓電(dian)(dian)(dian)(dian)(dian)(dian)場(chang)使煙氣發生(sheng)電(dian)(dian)(dian)(dian)(dian)(dian)離,氣流(liu)(liu)中的(de)(de)(de)粉(fen)塵(chen)(chen)(chen)(chen)(chen)荷電(dian)(dian)(dian)(dian)(dian)(dian)在(zai)電(dian)(dian)(dian)(dian)(dian)(dian)場(chang)作(zuo)用下與氣流(liu)(liu)分離。負極(ji)(ji)(ji)由(you)(you)不(bu)同(tong)斷面形狀的(de)(de)(de)金屬導線制成(cheng),叫(jiao)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)(you)不(bu)同(tong)幾何形狀的(de)(de)(de)金屬板制成(cheng),叫(jiao)集(ji)塵(chen)(chen)(chen)(chen)(chen)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)。靜電(dian)(dian)(dian)(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)(chen)(chen)器的(de)(de)(de)性能受(shou)粉(fen)塵(chen)(chen)(chen)(chen)(chen)性質、設備構造和煙氣流(liu)(liu)速等三個因素的(de)(de)(de)影響。粉(fen)塵(chen)(chen)(chen)(chen)(chen)的(de)(de)(de)比電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)是評價導電(dian)(dian)(dian)(dian)(dian)(dian)性的(de)(de)(de)指標,它對除(chu)塵(chen)(chen)(chen)(chen)(chen)效(xiao)率(lv)有(you)直接的(de)(de)(de)影響。比電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)過(guo)低,塵(chen)(chen)(chen)(chen)(chen)粒難以(yi)保持在(zai)集(ji)塵(chen)(chen)(chen)(chen)(chen)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)上,致使其重(zhong)返(fan)氣流(liu)(liu)。比電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)過(guo)高,到達集(ji)塵(chen)(chen)(chen)(chen)(chen)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)的(de)(de)(de)塵(chen)(chen)(chen)(chen)(chen)粒電(dian)(dian)(dian)(dian)(dian)(dian)荷不(bu)易(yi)放出,在(zai)塵(chen)(chen)(chen)(chen)(chen)層(ceng)之間形成(cheng)電(dian)(dian)(dian)(dian)(dian)(dian)壓梯度會產生(sheng)局(ju)部擊穿和放電(dian)(dian)(dian)(dian)(dian)(dian)現象。這些情況都會造成(cheng)除(chu)塵(chen)(chen)(chen)(chen)(chen)效(xiao)率(lv)下降(jiang)。
電(dian)(dian)除塵器(qi)的(de)基(ji)本原理(li)是利用電(dian)(dian)力捕集煙(yan)氣(qi)中的(de)粉(fen)(fen)塵,主(zhu)要包括以下四個相互有關(guan)的(de)物理(li)過程: (1) 氣(qi)體的(de)電(dian)(dian)離。(2) 粉(fen)(fen)塵的(de)荷電(dian)(dian)。(3) 荷電(dian)(dian)粉(fen)(fen)塵向電(dian)(dian)極移動(dong)。(4) 荷電(dian)(dian)粉(fen)(fen)塵的(de)捕集。