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)除塵(chen)(chen)器是以(yi)(yi)靜電(dian)(dian)(dian)(dian)凈化法來收捕廢氣中(zhong)的(de)(de)粉(fen)塵(chen)(chen),它的(de)(de)凈化工作(zuo)上要是依靠電(dian)(dian)(dian)(dian)暈(yun)極(ji)(ji)(ji)(ji)和沉淀兩個系統來完成的(de)(de),當(dang)含(han)塵(chen)(chen)氣體進(jin)人氣刺叭(ba)時,含(han)塵(chen)(chen)氣體受到氣流分布板以(yi)(yi)及(ji)折流板的(de)(de)調整(zheng)后,使(shi)氣流能(neng)較均勻地(di)進(jin)人電(dian)(dian)(dian)(dian)場。在(zai)橫斷面擴大的(de)(de)作(zuo)用(yong)下(xia),氣流速度迅速降低(di),其中(zhong)有些較重(zhong)的(de)(de)塵(chen)(chen)粒(li)便失去速度而沉降下(xia)來。進(jin)人電(dian)(dian)(dian)(dian)場的(de)(de)含(han)塵(chen)(chen)氣體由于電(dian)(dian)(dian)(dian)暈(yun)極(ji)(ji)(ji)(ji)通(tong)人高(gao)壓直流電(dian)(dian)(dian)(dian),則在(zai)電(dian)(dian)(dian)(dian)暈(yun)極(ji)(ji)(ji)(ji)附近產生(sheng)電(dian)(dian)(dian)(dian)暈(yun)現象,使(shi)氣體電(dian)(dian)(dian)(dian)離(li),電(dian)(dian)(dian)(dian)離(li)后的(de)(de)氣體中(zhong)存(cun)在(zai)大量的(de)(de)電(dian)(dian)(dian)(dian)子和離(li)子,這些電(dian)(dian)(dian)(dian)子和離(li)子與進(jin)人電(dian)(dian)(dian)(dian)場的(de)(de)粉(fen)塵(chen)(chen)結合起來,使(shi)塵(chen)(chen)粒(li)帶電(dian)(dian)(dian)(dian),帶電(dian)(dian)(dian)(dian)塵(chen)(chen)粒(li)在(zai)電(dian)(dian)(dian)(dian)場力的(de)(de)作(zuo)用(yong)下(xia)趨向本設(she)備(bei)陽(yang)極(ji)(ji)(ji)(ji)(正極(ji)(ji)(ji)(ji)、本設(she)備(bei)采(cai)用(yong)負高(gao)壓制)和陰極(ji)(ji)(ji)(ji)(負極(ji)(ji)(ji)(ji)) , 釋(shi)放(fang)出電(dian)(dian)(dian)(dian)子分別沉積在(zai)相應的(de)(de)電(dian)(dian)(dian)(dian)極(ji)(ji)(ji)(ji)上,通(tong)過設(she)備(bei)陰陽(yang)極(ji)(ji)(ji)(ji)振(zhen)(zhen)打系統的(de)(de)振(zhen)(zhen)打,使(shi)沉積在(zai)陰陽(yang)電(dian)(dian)(dian)(dian)極(ji)(ji)(ji)(ji)上的(de)(de)粉(fen)塵(chen)(chen)振(zhen)(zhen)落,進(jin)人集(ji)灰斗 通(tong)過排灰裝置(zhi)放(fang)出,回收有物(wu)料,被)凈化的(de)(de)氣體排入大氣。
工作原理
靜電(dian)(dian)(dian)(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)(chen)(chen)器的(de)(de)工作原理是利用(yong)高壓電(dian)(dian)(dian)(dian)(dian)(dian)場使煙氣發生(sheng)電(dian)(dian)(dian)(dian)(dian)(dian)離,氣流(liu)中的(de)(de)粉塵(chen)(chen)(chen)(chen)(chen)荷電(dian)(dian)(dian)(dian)(dian)(dian)在(zai)電(dian)(dian)(dian)(dian)(dian)(dian)場作用(yong)下(xia)與(yu)氣流(liu)分離。負(fu)極由(you)(you)不(bu)同(tong)斷面(mian)形(xing)狀的(de)(de)金屬(shu)導線制(zhi)成,叫放(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)極。正極由(you)(you)不(bu)同(tong)幾(ji)何形(xing)狀的(de)(de)金屬(shu)板制(zhi)成,叫集(ji)(ji)(ji)塵(chen)(chen)(chen)(chen)(chen)電(dian)(dian)(dian)(dian)(dian)(dian)極。靜電(dian)(dian)(dian)(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)(chen)(chen)器的(de)(de)性能(neng)受粉塵(chen)(chen)(chen)(chen)(chen)性質、設備構造(zao)和煙氣流(liu)速等三個(ge)因素的(de)(de)影響。粉塵(chen)(chen)(chen)(chen)(chen)的(de)(de)比電(dian)(dian)(dian)(dian)(dian)(dian)阻是評價導電(dian)(dian)(dian)(dian)(dian)(dian)性的(de)(de)指標,它(ta)對除(chu)塵(chen)(chen)(chen)(chen)(chen)效率有直(zhi)接的(de)(de)影響。比電(dian)(dian)(dian)(dian)(dian)(dian)阻過(guo)低,塵(chen)(chen)(chen)(chen)(chen)粒難以(yi)保持在(zai)集(ji)(ji)(ji)塵(chen)(chen)(chen)(chen)(chen)電(dian)(dian)(dian)(dian)(dian)(dian)極上,致使其重(zhong)返氣流(liu)。比電(dian)(dian)(dian)(dian)(dian)(dian)阻過(guo)高,到達集(ji)(ji)(ji)塵(chen)(chen)(chen)(chen)(chen)電(dian)(dian)(dian)(dian)(dian)(dian)極的(de)(de)塵(chen)(chen)(chen)(chen)(chen)粒電(dian)(dian)(dian)(dian)(dian)(dian)荷不(bu)易(yi)放(fang)(fang)出,在(zai)塵(chen)(chen)(chen)(chen)(chen)層之間形(xing)成電(dian)(dian)(dian)(dian)(dian)(dian)壓梯度會產生(sheng)局(ju)部擊(ji)穿和放(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)現(xian)象。這些情況都會造(zao)成除(chu)塵(chen)(chen)(chen)(chen)(chen)效率下(xia)降。
電(dian)除(chu)塵器的(de)(de)(de)基本(ben)原理(li)是利用電(dian)力(li)捕集煙氣(qi)中的(de)(de)(de)粉塵,主要包括以下四個相互有(you)關的(de)(de)(de)物理(li)過程: (1) 氣(qi)體的(de)(de)(de)電(dian)離。(2) 粉塵的(de)(de)(de)荷(he)(he)電(dian)。(3) 荷(he)(he)電(dian)粉塵向(xiang)電(dian)極移動。(4) 荷(he)(he)電(dian)粉塵的(de)(de)(de)捕集。