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)(dian)(dian)(dian)除塵(chen)(chen)(chen)器是以靜電(dian)(dian)(dian)(dian)(dian)凈化法來收捕廢氣(qi)(qi)中(zhong)的(de)(de)(de)粉塵(chen)(chen)(chen),它的(de)(de)(de)凈化工作(zuo)上(shang)要是依靠電(dian)(dian)(dian)(dian)(dian)暈極(ji)(ji)和(he)沉(chen)(chen)(chen)淀(dian)兩(liang)個系統來完成(cheng)的(de)(de)(de),當含塵(chen)(chen)(chen)氣(qi)(qi)體(ti)進人(ren)(ren)(ren)氣(qi)(qi)刺叭時,含塵(chen)(chen)(chen)氣(qi)(qi)體(ti)受到氣(qi)(qi)流(liu)分布板(ban)以及折流(liu)板(ban)的(de)(de)(de)調整后,使氣(qi)(qi)流(liu)能(neng)較均勻地進人(ren)(ren)(ren)電(dian)(dian)(dian)(dian)(dian)場(chang)。在(zai)橫斷面擴大的(de)(de)(de)作(zuo)用下(xia),氣(qi)(qi)流(liu)速(su)度(du)迅速(su)降(jiang)低(di),其中(zhong)有些較重的(de)(de)(de)塵(chen)(chen)(chen)粒便失(shi)去速(su)度(du)而沉(chen)(chen)(chen)降(jiang)下(xia)來。進人(ren)(ren)(ren)電(dian)(dian)(dian)(dian)(dian)場(chang)的(de)(de)(de)含塵(chen)(chen)(chen)氣(qi)(qi)體(ti)由(you)于電(dian)(dian)(dian)(dian)(dian)暈極(ji)(ji)通(tong)人(ren)(ren)(ren)高(gao)壓(ya)直流(liu)電(dian)(dian)(dian)(dian)(dian),則在(zai)電(dian)(dian)(dian)(dian)(dian)暈極(ji)(ji)附近產(chan)生電(dian)(dian)(dian)(dian)(dian)暈現象(xiang),使氣(qi)(qi)體(ti)電(dian)(dian)(dian)(dian)(dian)離(li),電(dian)(dian)(dian)(dian)(dian)離(li)后的(de)(de)(de)氣(qi)(qi)體(ti)中(zhong)存(cun)在(zai)大量的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)子(zi)(zi)和(he)離(li)子(zi)(zi),這些電(dian)(dian)(dian)(dian)(dian)子(zi)(zi)和(he)離(li)子(zi)(zi)與進人(ren)(ren)(ren)電(dian)(dian)(dian)(dian)(dian)場(chang)的(de)(de)(de)粉塵(chen)(chen)(chen)結合起來,使塵(chen)(chen)(chen)粒帶(dai)電(dian)(dian)(dian)(dian)(dian),帶(dai)電(dian)(dian)(dian)(dian)(dian)塵(chen)(chen)(chen)粒在(zai)電(dian)(dian)(dian)(dian)(dian)場(chang)力的(de)(de)(de)作(zuo)用下(xia)趨向本設備陽極(ji)(ji)(正(zheng)極(ji)(ji)、本設備采用負(fu)(fu)高(gao)壓(ya)制(zhi))和(he)陰極(ji)(ji)(負(fu)(fu)極(ji)(ji)) , 釋放出(chu)電(dian)(dian)(dian)(dian)(dian)子(zi)(zi)分別沉(chen)(chen)(chen)積在(zai)相應的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)上(shang),通(tong)過設備陰陽極(ji)(ji)振打系統的(de)(de)(de)振打,使沉(chen)(chen)(chen)積在(zai)陰陽電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)上(shang)的(de)(de)(de)粉塵(chen)(chen)(chen)振落,進人(ren)(ren)(ren)集灰(hui)斗(dou) 通(tong)過排灰(hui)裝置放出(chu),回收有物料(liao),被)凈化的(de)(de)(de)氣(qi)(qi)體(ti)排入大氣(qi)(qi)。
工作原理(li)
靜電(dian)(dian)(dian)(dian)除(chu)(chu)塵器的(de)(de)(de)工(gong)作原理是(shi)利用(yong)高壓電(dian)(dian)(dian)(dian)場使煙氣發(fa)生(sheng)電(dian)(dian)(dian)(dian)離(li),氣流中的(de)(de)(de)粉塵荷電(dian)(dian)(dian)(dian)在(zai)電(dian)(dian)(dian)(dian)場作用(yong)下(xia)與氣流分離(li)。負極(ji)(ji)由不同斷(duan)面形(xing)狀的(de)(de)(de)金(jin)屬導(dao)線制(zhi)成(cheng),叫放(fang)電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)極(ji)(ji)。正極(ji)(ji)由不同幾何形(xing)狀的(de)(de)(de)金(jin)屬板制(zhi)成(cheng),叫集塵電(dian)(dian)(dian)(dian)極(ji)(ji)。靜電(dian)(dian)(dian)(dian)除(chu)(chu)塵器的(de)(de)(de)性(xing)能受粉塵性(xing)質(zhi)、設(she)備(bei)構造和煙氣流速等(deng)三個因素的(de)(de)(de)影響(xiang)(xiang)。粉塵的(de)(de)(de)比電(dian)(dian)(dian)(dian)阻(zu)是(shi)評價(jia)導(dao)電(dian)(dian)(dian)(dian)性(xing)的(de)(de)(de)指標,它對除(chu)(chu)塵效率(lv)(lv)有直接(jie)的(de)(de)(de)影響(xiang)(xiang)。比電(dian)(dian)(dian)(dian)阻(zu)過(guo)(guo)低,塵粒難以保持在(zai)集塵電(dian)(dian)(dian)(dian)極(ji)(ji)上,致使其重返氣流。比電(dian)(dian)(dian)(dian)阻(zu)過(guo)(guo)高,到達集塵電(dian)(dian)(dian)(dian)極(ji)(ji)的(de)(de)(de)塵粒電(dian)(dian)(dian)(dian)荷不易放(fang)出,在(zai)塵層(ceng)之間形(xing)成(cheng)電(dian)(dian)(dian)(dian)壓梯(ti)度會產生(sheng)局(ju)部擊穿和放(fang)電(dian)(dian)(dian)(dian)現象。這些情況都會造成(cheng)除(chu)(chu)塵效率(lv)(lv)下(xia)降。
電(dian)(dian)除塵(chen)(chen)(chen)器的(de)(de)基本原理是利用電(dian)(dian)力(li)捕(bu)集煙(yan)氣(qi)中的(de)(de)粉(fen)塵(chen)(chen)(chen),主(zhu)要包括以(yi)下四(si)個相互有關的(de)(de)物理過程: (1) 氣(qi)體的(de)(de)電(dian)(dian)離。(2) 粉(fen)塵(chen)(chen)(chen)的(de)(de)荷(he)電(dian)(dian)。(3) 荷(he)電(dian)(dian)粉(fen)塵(chen)(chen)(chen)向(xiang)電(dian)(dian)極移動。(4) 荷(he)電(dian)(dian)粉(fen)塵(chen)(chen)(chen)的(de)(de)捕(bu)集。