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)(dian)除塵(chen)器(qi)是以靜(jing)電(dian)(dian)(dian)(dian)凈化(hua)法來收(shou)捕廢(fei)氣(qi)(qi)(qi)(qi)中(zhong)的(de)(de)(de)(de)粉(fen)塵(chen),它(ta)的(de)(de)(de)(de)凈化(hua)工作上要是依靠電(dian)(dian)(dian)(dian)暈(yun)(yun)極(ji)(ji)(ji)(ji)和沉淀兩個系統來完成的(de)(de)(de)(de),當含(han)(han)塵(chen)氣(qi)(qi)(qi)(qi)體(ti)(ti)進(jin)人(ren)氣(qi)(qi)(qi)(qi)刺叭時,含(han)(han)塵(chen)氣(qi)(qi)(qi)(qi)體(ti)(ti)受到(dao)氣(qi)(qi)(qi)(qi)流(liu)(liu)分(fen)布板以及折流(liu)(liu)板的(de)(de)(de)(de)調(diao)整(zheng)后(hou)(hou),使氣(qi)(qi)(qi)(qi)流(liu)(liu)能較均勻地進(jin)人(ren)電(dian)(dian)(dian)(dian)場(chang)。在橫斷面擴大(da)的(de)(de)(de)(de)作用(yong)下,氣(qi)(qi)(qi)(qi)流(liu)(liu)速度(du)迅速降(jiang)低(di),其中(zhong)有(you)(you)些較重的(de)(de)(de)(de)塵(chen)粒便失去速度(du)而沉降(jiang)下來。進(jin)人(ren)電(dian)(dian)(dian)(dian)場(chang)的(de)(de)(de)(de)含(han)(han)塵(chen)氣(qi)(qi)(qi)(qi)體(ti)(ti)由于(yu)電(dian)(dian)(dian)(dian)暈(yun)(yun)極(ji)(ji)(ji)(ji)通(tong)人(ren)高(gao)壓(ya)直流(liu)(liu)電(dian)(dian)(dian)(dian),則(ze)在電(dian)(dian)(dian)(dian)暈(yun)(yun)極(ji)(ji)(ji)(ji)附(fu)近產生電(dian)(dian)(dian)(dian)暈(yun)(yun)現象,使氣(qi)(qi)(qi)(qi)體(ti)(ti)電(dian)(dian)(dian)(dian)離(li),電(dian)(dian)(dian)(dian)離(li)后(hou)(hou)的(de)(de)(de)(de)氣(qi)(qi)(qi)(qi)體(ti)(ti)中(zhong)存在大(da)量的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)子(zi)(zi)(zi)和離(li)子(zi)(zi)(zi),這些電(dian)(dian)(dian)(dian)子(zi)(zi)(zi)和離(li)子(zi)(zi)(zi)與進(jin)人(ren)電(dian)(dian)(dian)(dian)場(chang)的(de)(de)(de)(de)粉(fen)塵(chen)結合起(qi)來,使塵(chen)粒帶電(dian)(dian)(dian)(dian),帶電(dian)(dian)(dian)(dian)塵(chen)粒在電(dian)(dian)(dian)(dian)場(chang)力的(de)(de)(de)(de)作用(yong)下趨向本設(she)備(bei)陽極(ji)(ji)(ji)(ji)(正極(ji)(ji)(ji)(ji)、本設(she)備(bei)采用(yong)負(fu)高(gao)壓(ya)制(zhi))和陰極(ji)(ji)(ji)(ji)(負(fu)極(ji)(ji)(ji)(ji)) , 釋放(fang)(fang)出電(dian)(dian)(dian)(dian)子(zi)(zi)(zi)分(fen)別沉積在相應的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)極(ji)(ji)(ji)(ji)上,通(tong)過設(she)備(bei)陰陽極(ji)(ji)(ji)(ji)振打系統的(de)(de)(de)(de)振打,使沉積在陰陽電(dian)(dian)(dian)(dian)極(ji)(ji)(ji)(ji)上的(de)(de)(de)(de)粉(fen)塵(chen)振落,進(jin)人(ren)集灰(hui)斗(dou) 通(tong)過排灰(hui)裝置(zhi)放(fang)(fang)出,回收(shou)有(you)(you)物(wu)料,被)凈化(hua)的(de)(de)(de)(de)氣(qi)(qi)(qi)(qi)體(ti)(ti)排入大(da)氣(qi)(qi)(qi)(qi)。
工作原理
靜(jing)電(dian)除(chu)塵(chen)(chen)(chen)器的(de)(de)(de)(de)(de)(de)工作原理(li)是利用高(gao)壓電(dian)場使煙(yan)氣(qi)發(fa)生電(dian)離,氣(qi)流(liu)中的(de)(de)(de)(de)(de)(de)粉(fen)塵(chen)(chen)(chen)荷電(dian)在(zai)電(dian)場作用下與氣(qi)流(liu)分離。負(fu)極(ji)(ji)由不同(tong)斷面形狀(zhuang)的(de)(de)(de)(de)(de)(de)金屬(shu)導線制(zhi)成,叫放(fang)(fang)電(dian)電(dian)極(ji)(ji)。正極(ji)(ji)由不同(tong)幾何(he)形狀(zhuang)的(de)(de)(de)(de)(de)(de)金屬(shu)板制(zhi)成,叫集塵(chen)(chen)(chen)電(dian)極(ji)(ji)。靜(jing)電(dian)除(chu)塵(chen)(chen)(chen)器的(de)(de)(de)(de)(de)(de)性能受粉(fen)塵(chen)(chen)(chen)性質、設(she)備(bei)構造(zao)和煙(yan)氣(qi)流(liu)速等三(san)個因素的(de)(de)(de)(de)(de)(de)影響。粉(fen)塵(chen)(chen)(chen)的(de)(de)(de)(de)(de)(de)比(bi)電(dian)阻(zu)是評價導電(dian)性的(de)(de)(de)(de)(de)(de)指標,它(ta)對(dui)除(chu)塵(chen)(chen)(chen)效(xiao)率(lv)(lv)有直接的(de)(de)(de)(de)(de)(de)影響。比(bi)電(dian)阻(zu)過低,塵(chen)(chen)(chen)粒難以(yi)保(bao)持在(zai)集塵(chen)(chen)(chen)電(dian)極(ji)(ji)上,致使其重返氣(qi)流(liu)。比(bi)電(dian)阻(zu)過高(gao),到達集塵(chen)(chen)(chen)電(dian)極(ji)(ji)的(de)(de)(de)(de)(de)(de)塵(chen)(chen)(chen)粒電(dian)荷不易放(fang)(fang)出(chu),在(zai)塵(chen)(chen)(chen)層之間形成電(dian)壓梯度會產生局部擊穿(chuan)和放(fang)(fang)電(dian)現象(xiang)。這些情(qing)況(kuang)都會造(zao)成除(chu)塵(chen)(chen)(chen)效(xiao)率(lv)(lv)下降。
電(dian)除塵(chen)器的(de)基本原理是利用電(dian)力捕(bu)集(ji)煙氣(qi)中的(de)粉塵(chen),主要(yao)包括以下四(si)個相(xiang)互有關(guan)的(de)物(wu)理過程: (1) 氣(qi)體的(de)電(dian)離。(2) 粉塵(chen)的(de)荷電(dian)。(3) 荷電(dian)粉塵(chen)向(xiang)電(dian)極移動。(4) 荷電(dian)粉塵(chen)的(de)捕(bu)集(ji)。