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(hua)(hua)(hua)法來(lai)(lai)收(shou)捕廢(fei)氣(qi)中(zhong)的粉(fen)塵(chen)(chen)(chen),它的凈化(hua)(hua)(hua)工作(zuo)上要是依靠電(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)極(ji)和(he)沉(chen)淀兩個系統來(lai)(lai)完成的,當含塵(chen)(chen)(chen)氣(qi)體(ti)(ti)進人(ren)氣(qi)刺(ci)叭時,含塵(chen)(chen)(chen)氣(qi)體(ti)(ti)受到氣(qi)流(liu)分(fen)(fen)布板以及折流(liu)板的調整后,使(shi)氣(qi)流(liu)能較(jiao)均(jun)勻地進人(ren)電(dian)(dian)(dian)(dian)(dian)場。在橫斷面擴大(da)(da)的作(zuo)用下,氣(qi)流(liu)速(su)度迅(xun)速(su)降低,其中(zhong)有(you)(you)些較(jiao)重的塵(chen)(chen)(chen)粒(li)便失去速(su)度而沉(chen)降下來(lai)(lai)。進人(ren)電(dian)(dian)(dian)(dian)(dian)場的含塵(chen)(chen)(chen)氣(qi)體(ti)(ti)由于電(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)極(ji)通人(ren)高(gao)壓(ya)直流(liu)電(dian)(dian)(dian)(dian)(dian),則在電(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)極(ji)附近產生(sheng)電(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)現象,使(shi)氣(qi)體(ti)(ti)電(dian)(dian)(dian)(dian)(dian)離,電(dian)(dian)(dian)(dian)(dian)離后的氣(qi)體(ti)(ti)中(zhong)存在大(da)(da)量的電(dian)(dian)(dian)(dian)(dian)子(zi)(zi)和(he)離子(zi)(zi),這些電(dian)(dian)(dian)(dian)(dian)子(zi)(zi)和(he)離子(zi)(zi)與進人(ren)電(dian)(dian)(dian)(dian)(dian)場的粉(fen)塵(chen)(chen)(chen)結合起來(lai)(lai),使(shi)塵(chen)(chen)(chen)粒(li)帶電(dian)(dian)(dian)(dian)(dian),帶電(dian)(dian)(dian)(dian)(dian)塵(chen)(chen)(chen)粒(li)在電(dian)(dian)(dian)(dian)(dian)場力(li)的作(zuo)用下趨向本設備(bei)陽極(ji)(正極(ji)、本設備(bei)采用負(fu)(fu)高(gao)壓(ya)制(zhi))和(he)陰極(ji)(負(fu)(fu)極(ji)) , 釋放出電(dian)(dian)(dian)(dian)(dian)子(zi)(zi)分(fen)(fen)別沉(chen)積(ji)在相應的電(dian)(dian)(dian)(dian)(dian)極(ji)上,通過(guo)設備(bei)陰陽極(ji)振打系統的振打,使(shi)沉(chen)積(ji)在陰陽電(dian)(dian)(dian)(dian)(dian)極(ji)上的粉(fen)塵(chen)(chen)(chen)振落,進人(ren)集灰(hui)斗 通過(guo)排(pai)(pai)灰(hui)裝置(zhi)放出,回收(shou)有(you)(you)物料(liao),被)凈化(hua)(hua)(hua)的氣(qi)體(ti)(ti)排(pai)(pai)入大(da)(da)氣(qi)。
工作原(yuan)理
靜電(dian)(dian)(dian)(dian)除(chu)塵(chen)器(qi)的(de)(de)工作原理是利用高壓電(dian)(dian)(dian)(dian)場使(shi)煙(yan)氣發生電(dian)(dian)(dian)(dian)離,氣流中的(de)(de)粉(fen)塵(chen)荷電(dian)(dian)(dian)(dian)在電(dian)(dian)(dian)(dian)場作用下與氣流分離。負極(ji)由(you)不(bu)同(tong)斷面(mian)形狀(zhuang)的(de)(de)金屬導線制成(cheng),叫放電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)極(ji)。正(zheng)極(ji)由(you)不(bu)同(tong)幾何形狀(zhuang)的(de)(de)金屬板制成(cheng),叫集(ji)塵(chen)電(dian)(dian)(dian)(dian)極(ji)。靜電(dian)(dian)(dian)(dian)除(chu)塵(chen)器(qi)的(de)(de)性(xing)能(neng)受(shou)粉(fen)塵(chen)性(xing)質、設備構造和(he)煙(yan)氣流速(su)等(deng)三個因素的(de)(de)影響。粉(fen)塵(chen)的(de)(de)比電(dian)(dian)(dian)(dian)阻(zu)是評價導電(dian)(dian)(dian)(dian)性(xing)的(de)(de)指標,它(ta)對(dui)除(chu)塵(chen)效率有(you)直(zhi)接(jie)的(de)(de)影響。比電(dian)(dian)(dian)(dian)阻(zu)過低,塵(chen)粒難以保持在集(ji)塵(chen)電(dian)(dian)(dian)(dian)極(ji)上,致使(shi)其重(zhong)返(fan)氣流。比電(dian)(dian)(dian)(dian)阻(zu)過高,到達集(ji)塵(chen)電(dian)(dian)(dian)(dian)極(ji)的(de)(de)塵(chen)粒電(dian)(dian)(dian)(dian)荷不(bu)易放出(chu),在塵(chen)層(ceng)之間(jian)形成(cheng)電(dian)(dian)(dian)(dian)壓梯度會產生局部(bu)擊(ji)穿和(he)放電(dian)(dian)(dian)(dian)現象。這些情況都會造成(cheng)除(chu)塵(chen)效率下降。
電(dian)除塵(chen)(chen)器(qi)的(de)基本原理(li)是利用電(dian)力捕集(ji)煙(yan)氣(qi)中的(de)粉(fen)塵(chen)(chen),主要包括以下(xia)四個相互有(you)關的(de)物理(li)過程: (1) 氣(qi)體(ti)的(de)電(dian)離。(2) 粉(fen)塵(chen)(chen)的(de)荷(he)電(dian)。(3) 荷(he)電(dian)粉(fen)塵(chen)(chen)向(xiang)電(dian)極移動。(4) 荷(he)電(dian)粉(fen)塵(chen)(chen)的(de)捕集(ji)。