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)除塵(chen)(chen)器是(shi)以靜電(dian)(dian)凈化(hua)法來(lai)(lai)收(shou)捕廢(fei)氣(qi)(qi)(qi)中(zhong)(zhong)的(de)(de)粉(fen)塵(chen)(chen),它的(de)(de)凈化(hua)工作上(shang)要是(shi)依(yi)靠(kao)電(dian)(dian)暈(yun)(yun)(yun)極(ji)(ji)和(he)(he)(he)沉(chen)(chen)淀兩個系(xi)統來(lai)(lai)完(wan)成的(de)(de),當含塵(chen)(chen)氣(qi)(qi)(qi)體(ti)(ti)(ti)進(jin)人氣(qi)(qi)(qi)刺叭時,含塵(chen)(chen)氣(qi)(qi)(qi)體(ti)(ti)(ti)受到(dao)氣(qi)(qi)(qi)流(liu)分(fen)布板以及折(zhe)流(liu)板的(de)(de)調(diao)整后,使(shi)氣(qi)(qi)(qi)流(liu)能(neng)較均勻(yun)地進(jin)人電(dian)(dian)場(chang)(chang)。在(zai)橫(heng)斷(duan)面擴大(da)的(de)(de)作用下(xia),氣(qi)(qi)(qi)流(liu)速度(du)(du)迅速降(jiang)低,其中(zhong)(zhong)有(you)些(xie)較重的(de)(de)塵(chen)(chen)粒便失去(qu)速度(du)(du)而沉(chen)(chen)降(jiang)下(xia)來(lai)(lai)。進(jin)人電(dian)(dian)場(chang)(chang)的(de)(de)含塵(chen)(chen)氣(qi)(qi)(qi)體(ti)(ti)(ti)由(you)于電(dian)(dian)暈(yun)(yun)(yun)極(ji)(ji)通(tong)人高(gao)(gao)壓(ya)直(zhi)流(liu)電(dian)(dian),則在(zai)電(dian)(dian)暈(yun)(yun)(yun)極(ji)(ji)附(fu)近產(chan)生電(dian)(dian)暈(yun)(yun)(yun)現象,使(shi)氣(qi)(qi)(qi)體(ti)(ti)(ti)電(dian)(dian)離,電(dian)(dian)離后的(de)(de)氣(qi)(qi)(qi)體(ti)(ti)(ti)中(zhong)(zhong)存在(zai)大(da)量的(de)(de)電(dian)(dian)子和(he)(he)(he)離子,這(zhe)些(xie)電(dian)(dian)子和(he)(he)(he)離子與進(jin)人電(dian)(dian)場(chang)(chang)的(de)(de)粉(fen)塵(chen)(chen)結合起(qi)來(lai)(lai),使(shi)塵(chen)(chen)粒帶(dai)電(dian)(dian),帶(dai)電(dian)(dian)塵(chen)(chen)粒在(zai)電(dian)(dian)場(chang)(chang)力的(de)(de)作用下(xia)趨向本(ben)設(she)備陽(yang)極(ji)(ji)(正極(ji)(ji)、本(ben)設(she)備采用負高(gao)(gao)壓(ya)制)和(he)(he)(he)陰極(ji)(ji)(負極(ji)(ji)) , 釋放出電(dian)(dian)子分(fen)別沉(chen)(chen)積(ji)在(zai)相應的(de)(de)電(dian)(dian)極(ji)(ji)上(shang),通(tong)過設(she)備陰陽(yang)極(ji)(ji)振打系(xi)統的(de)(de)振打,使(shi)沉(chen)(chen)積(ji)在(zai)陰陽(yang)電(dian)(dian)極(ji)(ji)上(shang)的(de)(de)粉(fen)塵(chen)(chen)振落,進(jin)人集灰斗 通(tong)過排灰裝置放出,回收(shou)有(you)物料,被)凈化(hua)的(de)(de)氣(qi)(qi)(qi)體(ti)(ti)(ti)排入大(da)氣(qi)(qi)(qi)。
工作原理
靜電(dian)(dian)除(chu)塵(chen)(chen)器(qi)的(de)(de)(de)工作原理是利用高壓電(dian)(dian)場使(shi)煙氣(qi)發生電(dian)(dian)離,氣(qi)流中的(de)(de)(de)粉(fen)(fen)(fen)塵(chen)(chen)荷(he)電(dian)(dian)在電(dian)(dian)場作用下與(yu)氣(qi)流分離。負極(ji)由(you)不(bu)同(tong)斷面(mian)形(xing)狀的(de)(de)(de)金屬(shu)(shu)導線制(zhi)成,叫放電(dian)(dian)電(dian)(dian)極(ji)。正極(ji)由(you)不(bu)同(tong)幾何形(xing)狀的(de)(de)(de)金屬(shu)(shu)板制(zhi)成,叫集塵(chen)(chen)電(dian)(dian)極(ji)。靜電(dian)(dian)除(chu)塵(chen)(chen)器(qi)的(de)(de)(de)性能(neng)受粉(fen)(fen)(fen)塵(chen)(chen)性質、設(she)備(bei)構(gou)造(zao)和煙氣(qi)流速等三(san)個(ge)因素的(de)(de)(de)影響(xiang)。粉(fen)(fen)(fen)塵(chen)(chen)的(de)(de)(de)比電(dian)(dian)阻是評(ping)價導電(dian)(dian)性的(de)(de)(de)指標,它對除(chu)塵(chen)(chen)效率(lv)有直接的(de)(de)(de)影響(xiang)。比電(dian)(dian)阻過(guo)低,塵(chen)(chen)粒(li)難以保持在集塵(chen)(chen)電(dian)(dian)極(ji)上(shang),致使(shi)其(qi)重返氣(qi)流。比電(dian)(dian)阻過(guo)高,到達集塵(chen)(chen)電(dian)(dian)極(ji)的(de)(de)(de)塵(chen)(chen)粒(li)電(dian)(dian)荷(he)不(bu)易放出(chu),在塵(chen)(chen)層之(zhi)間形(xing)成電(dian)(dian)壓梯(ti)度(du)會產生局部擊穿和放電(dian)(dian)現象。這些情況都會造(zao)成除(chu)塵(chen)(chen)效率(lv)下降。
電(dian)(dian)除塵(chen)器的基本原理(li)是利用電(dian)(dian)力(li)捕(bu)集煙氣(qi)中(zhong)的粉塵(chen),主要包括(kuo)以下四個相(xiang)互有關的物理(li)過程: (1) 氣(qi)體(ti)的電(dian)(dian)離。(2) 粉塵(chen)的荷(he)電(dian)(dian)。(3) 荷(he)電(dian)(dian)粉塵(chen)向電(dian)(dian)極(ji)移動。(4) 荷(he)電(dian)(dian)粉塵(chen)的捕(bu)集。