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)式靜電(dian)(dian)(dian)除塵(chen)(chen)(chen)(chen)器是以(yi)靜電(dian)(dian)(dian)凈化(hua)法來(lai)收捕(bu)廢(fei)氣(qi)中的(de)(de)(de)(de)粉(fen)塵(chen)(chen)(chen)(chen),它的(de)(de)(de)(de)凈化(hua)工作(zuo)上(shang)要是依靠電(dian)(dian)(dian)暈極(ji)(ji)和沉(chen)淀兩個(ge)系(xi)統(tong)來(lai)完成的(de)(de)(de)(de),當含(han)塵(chen)(chen)(chen)(chen)氣(qi)體(ti)(ti)進(jin)(jin)人(ren)(ren)(ren)(ren)氣(qi)刺(ci)叭時,含(han)塵(chen)(chen)(chen)(chen)氣(qi)體(ti)(ti)受到氣(qi)流分布(bu)板以(yi)及折(zhe)流板的(de)(de)(de)(de)調整(zheng)后,使氣(qi)流能較(jiao)均勻(yun)地進(jin)(jin)人(ren)(ren)(ren)(ren)電(dian)(dian)(dian)場(chang)(chang)。在橫斷(duan)面擴大(da)的(de)(de)(de)(de)作(zuo)用(yong)下,氣(qi)流速度迅(xun)速降(jiang)低,其中有些(xie)較(jiao)重的(de)(de)(de)(de)塵(chen)(chen)(chen)(chen)粒(li)便(bian)失(shi)去速度而沉(chen)降(jiang)下來(lai)。進(jin)(jin)人(ren)(ren)(ren)(ren)電(dian)(dian)(dian)場(chang)(chang)的(de)(de)(de)(de)含(han)塵(chen)(chen)(chen)(chen)氣(qi)體(ti)(ti)由于電(dian)(dian)(dian)暈極(ji)(ji)通人(ren)(ren)(ren)(ren)高(gao)壓(ya)(ya)直流電(dian)(dian)(dian),則在電(dian)(dian)(dian)暈極(ji)(ji)附(fu)近產生電(dian)(dian)(dian)暈現(xian)象,使氣(qi)體(ti)(ti)電(dian)(dian)(dian)離,電(dian)(dian)(dian)離后的(de)(de)(de)(de)氣(qi)體(ti)(ti)中存(cun)在大(da)量(liang)的(de)(de)(de)(de)電(dian)(dian)(dian)子(zi)和離子(zi),這些(xie)電(dian)(dian)(dian)子(zi)和離子(zi)與進(jin)(jin)人(ren)(ren)(ren)(ren)電(dian)(dian)(dian)場(chang)(chang)的(de)(de)(de)(de)粉(fen)塵(chen)(chen)(chen)(chen)結(jie)合起來(lai),使塵(chen)(chen)(chen)(chen)粒(li)帶(dai)電(dian)(dian)(dian),帶(dai)電(dian)(dian)(dian)塵(chen)(chen)(chen)(chen)粒(li)在電(dian)(dian)(dian)場(chang)(chang)力(li)的(de)(de)(de)(de)作(zuo)用(yong)下趨向本設備陽(yang)極(ji)(ji)(正極(ji)(ji)、本設備采用(yong)負高(gao)壓(ya)(ya)制)和陰(yin)極(ji)(ji)(負極(ji)(ji)) , 釋放出電(dian)(dian)(dian)子(zi)分別沉(chen)積(ji)在相應的(de)(de)(de)(de)電(dian)(dian)(dian)極(ji)(ji)上(shang),通過設備陰(yin)陽(yang)極(ji)(ji)振(zhen)(zhen)(zhen)打系(xi)統(tong)的(de)(de)(de)(de)振(zhen)(zhen)(zhen)打,使沉(chen)積(ji)在陰(yin)陽(yang)電(dian)(dian)(dian)極(ji)(ji)上(shang)的(de)(de)(de)(de)粉(fen)塵(chen)(chen)(chen)(chen)振(zhen)(zhen)(zhen)落,進(jin)(jin)人(ren)(ren)(ren)(ren)集灰斗 通過排灰裝置放出,回收有物料,被)凈化(hua)的(de)(de)(de)(de)氣(qi)體(ti)(ti)排入大(da)氣(qi)。
工作原(yuan)理
靜電(dian)(dian)(dian)(dian)(dian)除(chu)塵器的(de)(de)工作原理(li)是(shi)利用(yong)高壓電(dian)(dian)(dian)(dian)(dian)場使煙(yan)氣(qi)發(fa)生電(dian)(dian)(dian)(dian)(dian)離(li),氣(qi)流中的(de)(de)粉塵荷電(dian)(dian)(dian)(dian)(dian)在電(dian)(dian)(dian)(dian)(dian)場作用(yong)下與氣(qi)流分離(li)。負(fu)極(ji)由不同斷(duan)面形狀(zhuang)的(de)(de)金屬導線制成,叫(jiao)放(fang)電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)極(ji)。正極(ji)由不同幾何形狀(zhuang)的(de)(de)金屬板制成,叫(jiao)集塵電(dian)(dian)(dian)(dian)(dian)極(ji)。靜電(dian)(dian)(dian)(dian)(dian)除(chu)塵器的(de)(de)性(xing)能受粉塵性(xing)質、設備構(gou)造和煙(yan)氣(qi)流速等三個因素的(de)(de)影響。粉塵的(de)(de)比電(dian)(dian)(dian)(dian)(dian)阻(zu)是(shi)評價導電(dian)(dian)(dian)(dian)(dian)性(xing)的(de)(de)指標(biao),它(ta)對除(chu)塵效(xiao)率(lv)有(you)直接的(de)(de)影響。比電(dian)(dian)(dian)(dian)(dian)阻(zu)過(guo)低(di),塵粒難以保持在集塵電(dian)(dian)(dian)(dian)(dian)極(ji)上,致使其重返氣(qi)流。比電(dian)(dian)(dian)(dian)(dian)阻(zu)過(guo)高,到達(da)集塵電(dian)(dian)(dian)(dian)(dian)極(ji)的(de)(de)塵粒電(dian)(dian)(dian)(dian)(dian)荷不易放(fang)出,在塵層之間形成電(dian)(dian)(dian)(dian)(dian)壓梯度會產生局部擊穿和放(fang)電(dian)(dian)(dian)(dian)(dian)現(xian)象(xiang)。這些情況都(dou)會造成除(chu)塵效(xiao)率(lv)下降。
電(dian)除(chu)塵器的(de)基本原理是(shi)利用電(dian)力捕(bu)(bu)集煙氣中的(de)粉(fen)塵,主要(yao)包括以下四個相(xiang)互有關的(de)物理過程(cheng): (1) 氣體的(de)電(dian)離。(2) 粉(fen)塵的(de)荷(he)電(dian)。(3) 荷(he)電(dian)粉(fen)塵向(xiang)電(dian)極移(yi)動。(4) 荷(he)電(dian)粉(fen)塵的(de)捕(bu)(bu)集。