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)除塵(chen)(chen)(chen)(chen)器是(shi)(shi)以靜電(dian)(dian)(dian)凈(jing)化法來收捕廢氣(qi)(qi)(qi)(qi)(qi)(qi)中(zhong)(zhong)的(de)(de)(de)粉(fen)塵(chen)(chen)(chen)(chen),它的(de)(de)(de)凈(jing)化工作上要是(shi)(shi)依靠電(dian)(dian)(dian)暈(yun)極(ji)和沉(chen)淀兩個系(xi)統來完成的(de)(de)(de),當含(han)(han)塵(chen)(chen)(chen)(chen)氣(qi)(qi)(qi)(qi)(qi)(qi)體進(jin)(jin)(jin)人氣(qi)(qi)(qi)(qi)(qi)(qi)刺叭(ba)時,含(han)(han)塵(chen)(chen)(chen)(chen)氣(qi)(qi)(qi)(qi)(qi)(qi)體受到(dao)氣(qi)(qi)(qi)(qi)(qi)(qi)流分(fen)布板(ban)以及折(zhe)流板(ban)的(de)(de)(de)調整后,使氣(qi)(qi)(qi)(qi)(qi)(qi)流能(neng)較均勻地(di)進(jin)(jin)(jin)人電(dian)(dian)(dian)場。在橫斷面擴大(da)的(de)(de)(de)作用(yong)下,氣(qi)(qi)(qi)(qi)(qi)(qi)流速度迅(xun)速降低,其中(zhong)(zhong)有(you)些(xie)較重的(de)(de)(de)塵(chen)(chen)(chen)(chen)粒便失(shi)去速度而沉(chen)降下來。進(jin)(jin)(jin)人電(dian)(dian)(dian)場的(de)(de)(de)含(han)(han)塵(chen)(chen)(chen)(chen)氣(qi)(qi)(qi)(qi)(qi)(qi)體由于電(dian)(dian)(dian)暈(yun)極(ji)通人高(gao)壓直流電(dian)(dian)(dian),則(ze)在電(dian)(dian)(dian)暈(yun)極(ji)附近產生電(dian)(dian)(dian)暈(yun)現象,使氣(qi)(qi)(qi)(qi)(qi)(qi)體電(dian)(dian)(dian)離,電(dian)(dian)(dian)離后的(de)(de)(de)氣(qi)(qi)(qi)(qi)(qi)(qi)體中(zhong)(zhong)存在大(da)量的(de)(de)(de)電(dian)(dian)(dian)子和離子,這些(xie)電(dian)(dian)(dian)子和離子與進(jin)(jin)(jin)人電(dian)(dian)(dian)場的(de)(de)(de)粉(fen)塵(chen)(chen)(chen)(chen)結合起來,使塵(chen)(chen)(chen)(chen)粒帶(dai)電(dian)(dian)(dian),帶(dai)電(dian)(dian)(dian)塵(chen)(chen)(chen)(chen)粒在電(dian)(dian)(dian)場力(li)的(de)(de)(de)作用(yong)下趨向本(ben)設(she)備(bei)陽(yang)極(ji)(正(zheng)極(ji)、本(ben)設(she)備(bei)采用(yong)負高(gao)壓制)和陰極(ji)(負極(ji)) , 釋(shi)放出電(dian)(dian)(dian)子分(fen)別沉(chen)積(ji)在相(xiang)應(ying)的(de)(de)(de)電(dian)(dian)(dian)極(ji)上,通過設(she)備(bei)陰陽(yang)極(ji)振打系(xi)統的(de)(de)(de)振打,使沉(chen)積(ji)在陰陽(yang)電(dian)(dian)(dian)極(ji)上的(de)(de)(de)粉(fen)塵(chen)(chen)(chen)(chen)振落,進(jin)(jin)(jin)人集(ji)灰(hui)斗 通過排灰(hui)裝置(zhi)放出,回收有(you)物料,被)凈(jing)化的(de)(de)(de)氣(qi)(qi)(qi)(qi)(qi)(qi)體排入大(da)氣(qi)(qi)(qi)(qi)(qi)(qi)。
工作(zuo)原理(li)
靜電(dian)(dian)除(chu)塵(chen)(chen)器的(de)工作原(yuan)理是利用高壓(ya)(ya)電(dian)(dian)場(chang)使煙氣發生電(dian)(dian)離,氣流(liu)中的(de)粉塵(chen)(chen)荷(he)電(dian)(dian)在電(dian)(dian)場(chang)作用下(xia)與(yu)氣流(liu)分離。負極(ji)(ji)由不(bu)同(tong)斷(duan)面形狀的(de)金(jin)屬導線制成,叫放(fang)電(dian)(dian)電(dian)(dian)極(ji)(ji)。正極(ji)(ji)由不(bu)同(tong)幾何(he)形狀的(de)金(jin)屬板制成,叫集塵(chen)(chen)電(dian)(dian)極(ji)(ji)。靜電(dian)(dian)除(chu)塵(chen)(chen)器的(de)性(xing)能受粉塵(chen)(chen)性(xing)質、設備構(gou)造和(he)煙氣流(liu)速等三個因素的(de)影響。粉塵(chen)(chen)的(de)比(bi)電(dian)(dian)阻(zu)是評價導電(dian)(dian)性(xing)的(de)指標,它(ta)對除(chu)塵(chen)(chen)效(xiao)率有直接的(de)影響。比(bi)電(dian)(dian)阻(zu)過低,塵(chen)(chen)粒難以保持在集塵(chen)(chen)電(dian)(dian)極(ji)(ji)上,致使其重返氣流(liu)。比(bi)電(dian)(dian)阻(zu)過高,到達集塵(chen)(chen)電(dian)(dian)極(ji)(ji)的(de)塵(chen)(chen)粒電(dian)(dian)荷(he)不(bu)易(yi)放(fang)出,在塵(chen)(chen)層之間形成電(dian)(dian)壓(ya)(ya)梯度會產生局部(bu)擊穿和(he)放(fang)電(dian)(dian)現象。這些情況都會造成除(chu)塵(chen)(chen)效(xiao)率下(xia)降。
電(dian)(dian)(dian)除塵(chen)器的(de)基本原理是利用電(dian)(dian)(dian)力捕集煙氣中的(de)粉塵(chen),主要包括(kuo)以下四個相互有(you)關的(de)物理過程: (1) 氣體(ti)的(de)電(dian)(dian)(dian)離(li)。(2) 粉塵(chen)的(de)荷電(dian)(dian)(dian)。(3) 荷電(dian)(dian)(dian)粉塵(chen)向電(dian)(dian)(dian)極移動。(4) 荷電(dian)(dian)(dian)粉塵(chen)的(de)捕集。