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)除塵器是以(yi)靜(jing)電(dian)(dian)(dian)凈化(hua)法(fa)來(lai)收捕廢氣(qi)(qi)中(zhong)的(de)(de)粉(fen)塵,它的(de)(de)凈化(hua)工作(zuo)上要(yao)是依靠(kao)電(dian)(dian)(dian)暈極(ji)(ji)和沉(chen)淀兩(liang)個系統來(lai)完成的(de)(de),當含塵氣(qi)(qi)體(ti)進(jin)人(ren)(ren)氣(qi)(qi)刺叭時,含塵氣(qi)(qi)體(ti)受(shou)到氣(qi)(qi)流分布板以(yi)及折流板的(de)(de)調整后(hou),使(shi)(shi)氣(qi)(qi)流能較均勻地進(jin)人(ren)(ren)電(dian)(dian)(dian)場(chang)(chang)。在(zai)(zai)(zai)橫斷(duan)面擴大(da)的(de)(de)作(zuo)用(yong)下,氣(qi)(qi)流速(su)度(du)迅速(su)降(jiang)低,其中(zhong)有些(xie)較重的(de)(de)塵粒(li)(li)便失去速(su)度(du)而沉(chen)降(jiang)下來(lai)。進(jin)人(ren)(ren)電(dian)(dian)(dian)場(chang)(chang)的(de)(de)含塵氣(qi)(qi)體(ti)由于電(dian)(dian)(dian)暈極(ji)(ji)通(tong)(tong)人(ren)(ren)高壓直流電(dian)(dian)(dian),則在(zai)(zai)(zai)電(dian)(dian)(dian)暈極(ji)(ji)附近產生(sheng)電(dian)(dian)(dian)暈現象(xiang),使(shi)(shi)氣(qi)(qi)體(ti)電(dian)(dian)(dian)離(li)(li),電(dian)(dian)(dian)離(li)(li)后(hou)的(de)(de)氣(qi)(qi)體(ti)中(zhong)存(cun)在(zai)(zai)(zai)大(da)量的(de)(de)電(dian)(dian)(dian)子和離(li)(li)子,這些(xie)電(dian)(dian)(dian)子和離(li)(li)子與(yu)進(jin)人(ren)(ren)電(dian)(dian)(dian)場(chang)(chang)的(de)(de)粉(fen)塵結(jie)合(he)起來(lai),使(shi)(shi)塵粒(li)(li)帶(dai)電(dian)(dian)(dian),帶(dai)電(dian)(dian)(dian)塵粒(li)(li)在(zai)(zai)(zai)電(dian)(dian)(dian)場(chang)(chang)力的(de)(de)作(zuo)用(yong)下趨(qu)向本設備(bei)陽極(ji)(ji)(正極(ji)(ji)、本設備(bei)采用(yong)負(fu)高壓制)和陰(yin)極(ji)(ji)(負(fu)極(ji)(ji)) , 釋(shi)放(fang)出電(dian)(dian)(dian)子分別(bie)沉(chen)積在(zai)(zai)(zai)相應(ying)的(de)(de)電(dian)(dian)(dian)極(ji)(ji)上,通(tong)(tong)過設備(bei)陰(yin)陽極(ji)(ji)振打系統的(de)(de)振打,使(shi)(shi)沉(chen)積在(zai)(zai)(zai)陰(yin)陽電(dian)(dian)(dian)極(ji)(ji)上的(de)(de)粉(fen)塵振落,進(jin)人(ren)(ren)集灰斗 通(tong)(tong)過排灰裝置(zhi)放(fang)出,回收有物料,被)凈化(hua)的(de)(de)氣(qi)(qi)體(ti)排入大(da)氣(qi)(qi)。
工(gong)作原(yuan)理
靜電(dian)(dian)(dian)(dian)除塵(chen)(chen)器(qi)的(de)(de)(de)(de)(de)工作(zuo)(zuo)原(yuan)理是(shi)利用(yong)(yong)高壓(ya)電(dian)(dian)(dian)(dian)場使(shi)煙氣(qi)發生電(dian)(dian)(dian)(dian)離,氣(qi)流中的(de)(de)(de)(de)(de)粉(fen)(fen)塵(chen)(chen)荷電(dian)(dian)(dian)(dian)在電(dian)(dian)(dian)(dian)場作(zuo)(zuo)用(yong)(yong)下(xia)與氣(qi)流分離。負極(ji)(ji)(ji)由不同斷面形(xing)(xing)狀的(de)(de)(de)(de)(de)金(jin)屬導(dao)線制成(cheng),叫放電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)極(ji)(ji)(ji)。正極(ji)(ji)(ji)由不同幾(ji)何形(xing)(xing)狀的(de)(de)(de)(de)(de)金(jin)屬板制成(cheng),叫集(ji)塵(chen)(chen)電(dian)(dian)(dian)(dian)極(ji)(ji)(ji)。靜電(dian)(dian)(dian)(dian)除塵(chen)(chen)器(qi)的(de)(de)(de)(de)(de)性能(neng)受粉(fen)(fen)塵(chen)(chen)性質(zhi)、設備構(gou)造和(he)煙氣(qi)流速等(deng)三個因素的(de)(de)(de)(de)(de)影響。粉(fen)(fen)塵(chen)(chen)的(de)(de)(de)(de)(de)比(bi)(bi)電(dian)(dian)(dian)(dian)阻是(shi)評價導(dao)電(dian)(dian)(dian)(dian)性的(de)(de)(de)(de)(de)指(zhi)標,它(ta)對除塵(chen)(chen)效率有直接(jie)的(de)(de)(de)(de)(de)影響。比(bi)(bi)電(dian)(dian)(dian)(dian)阻過低,塵(chen)(chen)粒難以保持在集(ji)塵(chen)(chen)電(dian)(dian)(dian)(dian)極(ji)(ji)(ji)上,致使(shi)其重返氣(qi)流。比(bi)(bi)電(dian)(dian)(dian)(dian)阻過高,到達(da)集(ji)塵(chen)(chen)電(dian)(dian)(dian)(dian)極(ji)(ji)(ji)的(de)(de)(de)(de)(de)塵(chen)(chen)粒電(dian)(dian)(dian)(dian)荷不易(yi)放出,在塵(chen)(chen)層之間形(xing)(xing)成(cheng)電(dian)(dian)(dian)(dian)壓(ya)梯度(du)會產生局(ju)部擊穿和(he)放電(dian)(dian)(dian)(dian)現(xian)象。這(zhe)些情況都會造成(cheng)除塵(chen)(chen)效率下(xia)降。
電(dian)(dian)(dian)除(chu)塵(chen)器(qi)的(de)基本原(yuan)理是利用電(dian)(dian)(dian)力(li)捕(bu)集(ji)煙氣中(zhong)的(de)粉塵(chen),主要包括以(yi)下(xia)四個相互有關的(de)物理過(guo)程: (1) 氣體的(de)電(dian)(dian)(dian)離。(2) 粉塵(chen)的(de)荷電(dian)(dian)(dian)。(3) 荷電(dian)(dian)(dian)粉塵(chen)向(xiang)電(dian)(dian)(dian)極移(yi)動。(4) 荷電(dian)(dian)(dian)粉塵(chen)的(de)捕(bu)集(ji)。