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)(dian)(dian)除塵器(qi)是以靜(jing)電(dian)(dian)(dian)(dian)(dian)(dian)凈化法來(lai)收捕廢氣(qi)(qi)中(zhong)的(de)(de)(de)粉(fen)塵,它的(de)(de)(de)凈化工作上要是依(yi)靠電(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)(yun)極(ji)(ji)和沉淀兩(liang)個(ge)系統來(lai)完成(cheng)的(de)(de)(de),當含塵氣(qi)(qi)體進人(ren)(ren)氣(qi)(qi)刺(ci)叭時,含塵氣(qi)(qi)體受到氣(qi)(qi)流(liu)分布板(ban)以及折流(liu)板(ban)的(de)(de)(de)調整后(hou),使氣(qi)(qi)流(liu)能較均勻地進人(ren)(ren)電(dian)(dian)(dian)(dian)(dian)(dian)場(chang)。在(zai)橫斷面擴大的(de)(de)(de)作用下(xia)(xia),氣(qi)(qi)流(liu)速度迅速降低,其中(zhong)有(you)些(xie)較重的(de)(de)(de)塵粒便失去速度而沉降下(xia)(xia)來(lai)。進人(ren)(ren)電(dian)(dian)(dian)(dian)(dian)(dian)場(chang)的(de)(de)(de)含塵氣(qi)(qi)體由于電(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)(yun)極(ji)(ji)通(tong)人(ren)(ren)高(gao)壓直流(liu)電(dian)(dian)(dian)(dian)(dian)(dian),則在(zai)電(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)(yun)極(ji)(ji)附近產(chan)生電(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)(yun)現(xian)象(xiang),使氣(qi)(qi)體電(dian)(dian)(dian)(dian)(dian)(dian)離(li),電(dian)(dian)(dian)(dian)(dian)(dian)離(li)后(hou)的(de)(de)(de)氣(qi)(qi)體中(zhong)存在(zai)大量的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)子(zi)(zi)和離(li)子(zi)(zi),這(zhe)些(xie)電(dian)(dian)(dian)(dian)(dian)(dian)子(zi)(zi)和離(li)子(zi)(zi)與進人(ren)(ren)電(dian)(dian)(dian)(dian)(dian)(dian)場(chang)的(de)(de)(de)粉(fen)塵結合起來(lai),使塵粒帶電(dian)(dian)(dian)(dian)(dian)(dian),帶電(dian)(dian)(dian)(dian)(dian)(dian)塵粒在(zai)電(dian)(dian)(dian)(dian)(dian)(dian)場(chang)力的(de)(de)(de)作用下(xia)(xia)趨向本設備(bei)陽(yang)(yang)極(ji)(ji)(正極(ji)(ji)、本設備(bei)采用負高(gao)壓制)和陰極(ji)(ji)(負極(ji)(ji)) , 釋放(fang)出(chu)電(dian)(dian)(dian)(dian)(dian)(dian)子(zi)(zi)分別沉積在(zai)相應的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)上,通(tong)過設備(bei)陰陽(yang)(yang)極(ji)(ji)振(zhen)打系統的(de)(de)(de)振(zhen)打,使沉積在(zai)陰陽(yang)(yang)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)上的(de)(de)(de)粉(fen)塵振(zhen)落,進人(ren)(ren)集灰斗(dou) 通(tong)過排灰裝(zhuang)置放(fang)出(chu),回收有(you)物料(liao),被)凈化的(de)(de)(de)氣(qi)(qi)體排入大氣(qi)(qi)。
工作原理
靜電(dian)(dian)(dian)(dian)(dian)除塵(chen)(chen)(chen)器的(de)(de)(de)工作原理是利用高(gao)壓(ya)電(dian)(dian)(dian)(dian)(dian)場(chang)使(shi)煙氣發(fa)生電(dian)(dian)(dian)(dian)(dian)離(li),氣流中的(de)(de)(de)粉(fen)塵(chen)(chen)(chen)荷電(dian)(dian)(dian)(dian)(dian)在電(dian)(dian)(dian)(dian)(dian)場(chang)作用下與氣流分(fen)離(li)。負極(ji)(ji)由(you)(you)不(bu)同斷面形(xing)狀的(de)(de)(de)金屬導線制(zhi)成,叫放(fang)電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)。正極(ji)(ji)由(you)(you)不(bu)同幾何形(xing)狀的(de)(de)(de)金屬板(ban)制(zhi)成,叫集(ji)(ji)塵(chen)(chen)(chen)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)。靜電(dian)(dian)(dian)(dian)(dian)除塵(chen)(chen)(chen)器的(de)(de)(de)性(xing)能受粉(fen)塵(chen)(chen)(chen)性(xing)質、設備構造(zao)和煙氣流速等(deng)三個(ge)因素的(de)(de)(de)影(ying)響(xiang)。粉(fen)塵(chen)(chen)(chen)的(de)(de)(de)比(bi)電(dian)(dian)(dian)(dian)(dian)阻(zu)是評價導電(dian)(dian)(dian)(dian)(dian)性(xing)的(de)(de)(de)指標,它對除塵(chen)(chen)(chen)效(xiao)率有直接的(de)(de)(de)影(ying)響(xiang)。比(bi)電(dian)(dian)(dian)(dian)(dian)阻(zu)過低,塵(chen)(chen)(chen)粒難以保(bao)持(chi)在集(ji)(ji)塵(chen)(chen)(chen)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)上,致使(shi)其重返氣流。比(bi)電(dian)(dian)(dian)(dian)(dian)阻(zu)過高(gao),到達集(ji)(ji)塵(chen)(chen)(chen)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)的(de)(de)(de)塵(chen)(chen)(chen)粒電(dian)(dian)(dian)(dian)(dian)荷不(bu)易放(fang)出(chu),在塵(chen)(chen)(chen)層(ceng)之間形(xing)成電(dian)(dian)(dian)(dian)(dian)壓(ya)梯度會產生局部擊(ji)穿(chuan)和放(fang)電(dian)(dian)(dian)(dian)(dian)現象。這些情況都會造(zao)成除塵(chen)(chen)(chen)效(xiao)率下降。
電(dian)除(chu)塵(chen)器的(de)基本原理是(shi)利用電(dian)力捕集(ji)煙氣中的(de)粉塵(chen),主要包括以下(xia)四個(ge)相互有關的(de)物理過程: (1) 氣體(ti)的(de)電(dian)離(li)。(2) 粉塵(chen)的(de)荷(he)(he)電(dian)。(3) 荷(he)(he)電(dian)粉塵(chen)向(xiang)電(dian)極移動。(4) 荷(he)(he)電(dian)粉塵(chen)的(de)捕集(ji)。