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)器是以(yi)靜電(dian)(dian)(dian)凈(jing)(jing)化法來(lai)收捕廢(fei)氣(qi)(qi)(qi)(qi)中的(de)(de)(de)粉(fen)(fen)塵(chen),它的(de)(de)(de)凈(jing)(jing)化工作上(shang)(shang)要是依靠電(dian)(dian)(dian)暈極(ji)和沉淀兩(liang)個系統(tong)來(lai)完成(cheng)的(de)(de)(de),當含(han)(han)塵(chen)氣(qi)(qi)(qi)(qi)體(ti)進(jin)(jin)(jin)人(ren)(ren)氣(qi)(qi)(qi)(qi)刺(ci)叭時(shi),含(han)(han)塵(chen)氣(qi)(qi)(qi)(qi)體(ti)受到氣(qi)(qi)(qi)(qi)流分(fen)布板以(yi)及折流板的(de)(de)(de)調整后,使氣(qi)(qi)(qi)(qi)流能較均(jun)勻地進(jin)(jin)(jin)人(ren)(ren)電(dian)(dian)(dian)場(chang)。在(zai)橫斷面(mian)擴大的(de)(de)(de)作用(yong)下(xia),氣(qi)(qi)(qi)(qi)流速度(du)迅速降低,其中有(you)些較重的(de)(de)(de)塵(chen)粒(li)便失去速度(du)而沉降下(xia)來(lai)。進(jin)(jin)(jin)人(ren)(ren)電(dian)(dian)(dian)場(chang)的(de)(de)(de)含(han)(han)塵(chen)氣(qi)(qi)(qi)(qi)體(ti)由于電(dian)(dian)(dian)暈極(ji)通(tong)(tong)人(ren)(ren)高壓(ya)直流電(dian)(dian)(dian),則在(zai)電(dian)(dian)(dian)暈極(ji)附近產生(sheng)電(dian)(dian)(dian)暈現(xian)象,使氣(qi)(qi)(qi)(qi)體(ti)電(dian)(dian)(dian)離,電(dian)(dian)(dian)離后的(de)(de)(de)氣(qi)(qi)(qi)(qi)體(ti)中存在(zai)大量的(de)(de)(de)電(dian)(dian)(dian)子(zi)(zi)和離子(zi)(zi),這些電(dian)(dian)(dian)子(zi)(zi)和離子(zi)(zi)與進(jin)(jin)(jin)人(ren)(ren)電(dian)(dian)(dian)場(chang)的(de)(de)(de)粉(fen)(fen)塵(chen)結合(he)起來(lai),使塵(chen)粒(li)帶電(dian)(dian)(dian),帶電(dian)(dian)(dian)塵(chen)粒(li)在(zai)電(dian)(dian)(dian)場(chang)力的(de)(de)(de)作用(yong)下(xia)趨向(xiang)本設(she)備陽極(ji)(正極(ji)、本設(she)備采用(yong)負高壓(ya)制(zhi))和陰極(ji)(負極(ji)) , 釋放(fang)出電(dian)(dian)(dian)子(zi)(zi)分(fen)別沉積在(zai)相(xiang)應的(de)(de)(de)電(dian)(dian)(dian)極(ji)上(shang)(shang),通(tong)(tong)過(guo)(guo)設(she)備陰陽極(ji)振打系統(tong)的(de)(de)(de)振打,使沉積在(zai)陰陽電(dian)(dian)(dian)極(ji)上(shang)(shang)的(de)(de)(de)粉(fen)(fen)塵(chen)振落,進(jin)(jin)(jin)人(ren)(ren)集灰斗 通(tong)(tong)過(guo)(guo)排灰裝置(zhi)放(fang)出,回收有(you)物(wu)料,被)凈(jing)(jing)化的(de)(de)(de)氣(qi)(qi)(qi)(qi)體(ti)排入大氣(qi)(qi)(qi)(qi)。
工作原(yuan)理
靜(jing)電(dian)(dian)(dian)除(chu)(chu)塵(chen)(chen)器(qi)(qi)的(de)(de)(de)工作(zuo)原理(li)是利(li)用高(gao)壓電(dian)(dian)(dian)場(chang)使煙氣發生電(dian)(dian)(dian)離(li),氣流(liu)中的(de)(de)(de)粉塵(chen)(chen)荷電(dian)(dian)(dian)在電(dian)(dian)(dian)場(chang)作(zuo)用下(xia)(xia)與氣流(liu)分(fen)離(li)。負極(ji)(ji)(ji)由不同斷面形(xing)狀的(de)(de)(de)金(jin)屬(shu)導線制成,叫(jiao)放電(dian)(dian)(dian)電(dian)(dian)(dian)極(ji)(ji)(ji)。正(zheng)極(ji)(ji)(ji)由不同幾何(he)形(xing)狀的(de)(de)(de)金(jin)屬(shu)板制成,叫(jiao)集塵(chen)(chen)電(dian)(dian)(dian)極(ji)(ji)(ji)。靜(jing)電(dian)(dian)(dian)除(chu)(chu)塵(chen)(chen)器(qi)(qi)的(de)(de)(de)性(xing)能受粉塵(chen)(chen)性(xing)質(zhi)、設備構(gou)造和煙氣流(liu)速等三個因素的(de)(de)(de)影響。粉塵(chen)(chen)的(de)(de)(de)比(bi)電(dian)(dian)(dian)阻是評價導電(dian)(dian)(dian)性(xing)的(de)(de)(de)指標,它對除(chu)(chu)塵(chen)(chen)效(xiao)率有直(zhi)接的(de)(de)(de)影響。比(bi)電(dian)(dian)(dian)阻過低,塵(chen)(chen)粒難以保(bao)持在集塵(chen)(chen)電(dian)(dian)(dian)極(ji)(ji)(ji)上(shang),致(zhi)使其重(zhong)返氣流(liu)。比(bi)電(dian)(dian)(dian)阻過高(gao),到達集塵(chen)(chen)電(dian)(dian)(dian)極(ji)(ji)(ji)的(de)(de)(de)塵(chen)(chen)粒電(dian)(dian)(dian)荷不易(yi)放出,在塵(chen)(chen)層之間形(xing)成電(dian)(dian)(dian)壓梯度會產生局(ju)部擊(ji)穿和放電(dian)(dian)(dian)現象。這些情況都會造成除(chu)(chu)塵(chen)(chen)效(xiao)率下(xia)(xia)降。
電(dian)(dian)除塵器的基本原理(li)是利用電(dian)(dian)力(li)捕(bu)集(ji)煙氣(qi)(qi)中的粉(fen)塵,主要(yao)包括以下四個相互有(you)關的物理(li)過程: (1) 氣(qi)(qi)體的電(dian)(dian)離。(2) 粉(fen)塵的荷電(dian)(dian)。(3) 荷電(dian)(dian)粉(fen)塵向電(dian)(dian)極移動。(4) 荷電(dian)(dian)粉(fen)塵的捕(bu)集(ji)。