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)(dian)(dian)除塵(chen)(chen)器是(shi)以(yi)靜電(dian)(dian)(dian)(dian)(dian)(dian)(dian)凈(jing)化法來收捕廢氣(qi)(qi)(qi)中(zhong)的(de)(de)(de)(de)(de)粉塵(chen)(chen),它的(de)(de)(de)(de)(de)凈(jing)化工作上要是(shi)依靠電(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)極(ji)和(he)沉淀兩個系統來完(wan)成的(de)(de)(de)(de)(de),當含(han)塵(chen)(chen)氣(qi)(qi)(qi)體(ti)進人(ren)氣(qi)(qi)(qi)刺叭時,含(han)塵(chen)(chen)氣(qi)(qi)(qi)體(ti)受(shou)到氣(qi)(qi)(qi)流分布板(ban)以(yi)及(ji)折流板(ban)的(de)(de)(de)(de)(de)調整(zheng)后,使氣(qi)(qi)(qi)流能較均勻地進人(ren)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)場(chang)(chang)(chang)。在(zai)橫斷面擴大的(de)(de)(de)(de)(de)作用(yong)下(xia)(xia),氣(qi)(qi)(qi)流速度(du)迅速降低,其(qi)中(zhong)有些較重(zhong)的(de)(de)(de)(de)(de)塵(chen)(chen)粒便失(shi)去速度(du)而(er)沉降下(xia)(xia)來。進人(ren)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)場(chang)(chang)(chang)的(de)(de)(de)(de)(de)含(han)塵(chen)(chen)氣(qi)(qi)(qi)體(ti)由于(yu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)極(ji)通人(ren)高壓(ya)直(zhi)流電(dian)(dian)(dian)(dian)(dian)(dian)(dian),則在(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)極(ji)附(fu)近產生電(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)現象,使氣(qi)(qi)(qi)體(ti)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)離(li),電(dian)(dian)(dian)(dian)(dian)(dian)(dian)離(li)后的(de)(de)(de)(de)(de)氣(qi)(qi)(qi)體(ti)中(zhong)存在(zai)大量(liang)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)和(he)離(li)子(zi),這些電(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)和(he)離(li)子(zi)與進人(ren)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)場(chang)(chang)(chang)的(de)(de)(de)(de)(de)粉塵(chen)(chen)結合起來,使塵(chen)(chen)粒帶電(dian)(dian)(dian)(dian)(dian)(dian)(dian),帶電(dian)(dian)(dian)(dian)(dian)(dian)(dian)塵(chen)(chen)粒在(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)場(chang)(chang)(chang)力的(de)(de)(de)(de)(de)作用(yong)下(xia)(xia)趨向(xiang)本設備陽(yang)極(ji)(正極(ji)、本設備采(cai)用(yong)負高壓(ya)制)和(he)陰極(ji)(負極(ji)) , 釋放出(chu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)分別沉積(ji)在(zai)相應的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)上,通過(guo)(guo)設備陰陽(yang)極(ji)振打系統的(de)(de)(de)(de)(de)振打,使沉積(ji)在(zai)陰陽(yang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)上的(de)(de)(de)(de)(de)粉塵(chen)(chen)振落,進人(ren)集灰(hui)斗 通過(guo)(guo)排灰(hui)裝置放出(chu),回收有物料,被)凈(jing)化的(de)(de)(de)(de)(de)氣(qi)(qi)(qi)體(ti)排入(ru)大氣(qi)(qi)(qi)。
工作(zuo)原(yuan)理
靜(jing)電(dian)(dian)(dian)(dian)除塵(chen)器(qi)的(de)(de)(de)(de)工作(zuo)原(yuan)理是(shi)利用高壓(ya)電(dian)(dian)(dian)(dian)場使(shi)煙氣(qi)發生(sheng)電(dian)(dian)(dian)(dian)離(li),氣(qi)流中的(de)(de)(de)(de)粉塵(chen)荷(he)電(dian)(dian)(dian)(dian)在(zai)(zai)電(dian)(dian)(dian)(dian)場作(zuo)用下(xia)(xia)與氣(qi)流分離(li)。負極由不(bu)同斷面形狀的(de)(de)(de)(de)金屬(shu)導線制成(cheng),叫放電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)極。正(zheng)極由不(bu)同幾何形狀的(de)(de)(de)(de)金屬(shu)板(ban)制成(cheng),叫集(ji)(ji)塵(chen)電(dian)(dian)(dian)(dian)極。靜(jing)電(dian)(dian)(dian)(dian)除塵(chen)器(qi)的(de)(de)(de)(de)性能(neng)受粉塵(chen)性質、設備構(gou)造和煙氣(qi)流速等三個因素(su)的(de)(de)(de)(de)影響。粉塵(chen)的(de)(de)(de)(de)比(bi)電(dian)(dian)(dian)(dian)阻(zu)是(shi)評價(jia)導電(dian)(dian)(dian)(dian)性的(de)(de)(de)(de)指標,它對除塵(chen)效(xiao)率有直(zhi)接(jie)的(de)(de)(de)(de)影響。比(bi)電(dian)(dian)(dian)(dian)阻(zu)過低(di),塵(chen)粒難(nan)以保持在(zai)(zai)集(ji)(ji)塵(chen)電(dian)(dian)(dian)(dian)極上,致使(shi)其重(zhong)返氣(qi)流。比(bi)電(dian)(dian)(dian)(dian)阻(zu)過高,到達(da)集(ji)(ji)塵(chen)電(dian)(dian)(dian)(dian)極的(de)(de)(de)(de)塵(chen)粒電(dian)(dian)(dian)(dian)荷(he)不(bu)易(yi)放出,在(zai)(zai)塵(chen)層(ceng)之間形成(cheng)電(dian)(dian)(dian)(dian)壓(ya)梯(ti)度會產生(sheng)局(ju)部擊(ji)穿(chuan)和放電(dian)(dian)(dian)(dian)現象。這些情況都會造成(cheng)除塵(chen)效(xiao)率下(xia)(xia)降。
電除(chu)塵(chen)器的(de)(de)(de)基本原理是利用電力捕集煙(yan)氣中的(de)(de)(de)粉(fen)塵(chen),主要包括(kuo)以下四個相互有關的(de)(de)(de)物理過(guo)程: (1) 氣體的(de)(de)(de)電離。(2) 粉(fen)塵(chen)的(de)(de)(de)荷電。(3) 荷電粉(fen)塵(chen)向電極移動。(4) 荷電粉(fen)塵(chen)的(de)(de)(de)捕集。