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(qi)是以靜電(dian)(dian)(dian)(dian)凈化法來收捕廢氣(qi)(qi)(qi)(qi)中的(de)(de)(de)(de)粉塵(chen)(chen),它的(de)(de)(de)(de)凈化工作上要是依(yi)靠電(dian)(dian)(dian)(dian)暈極(ji)(ji)和沉淀(dian)兩個系統來完成的(de)(de)(de)(de),當含塵(chen)(chen)氣(qi)(qi)(qi)(qi)體(ti)進人(ren)(ren)氣(qi)(qi)(qi)(qi)刺叭時,含塵(chen)(chen)氣(qi)(qi)(qi)(qi)體(ti)受到(dao)氣(qi)(qi)(qi)(qi)流分布板(ban)以及折流板(ban)的(de)(de)(de)(de)調(diao)整后(hou),使(shi)(shi)氣(qi)(qi)(qi)(qi)流能(neng)較(jiao)均(jun)勻地進人(ren)(ren)電(dian)(dian)(dian)(dian)場。在橫(heng)斷面(mian)擴(kuo)大(da)的(de)(de)(de)(de)作用(yong)(yong)下,氣(qi)(qi)(qi)(qi)流速度迅速降(jiang)低,其中有(you)些較(jiao)重的(de)(de)(de)(de)塵(chen)(chen)粒便(bian)失去速度而沉降(jiang)下來。進人(ren)(ren)電(dian)(dian)(dian)(dian)場的(de)(de)(de)(de)含塵(chen)(chen)氣(qi)(qi)(qi)(qi)體(ti)由(you)于電(dian)(dian)(dian)(dian)暈極(ji)(ji)通(tong)人(ren)(ren)高(gao)壓直流電(dian)(dian)(dian)(dian),則在電(dian)(dian)(dian)(dian)暈極(ji)(ji)附近(jin)產(chan)生電(dian)(dian)(dian)(dian)暈現象,使(shi)(shi)氣(qi)(qi)(qi)(qi)體(ti)電(dian)(dian)(dian)(dian)離,電(dian)(dian)(dian)(dian)離后(hou)的(de)(de)(de)(de)氣(qi)(qi)(qi)(qi)體(ti)中存在大(da)量的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)子(zi)和離子(zi),這些電(dian)(dian)(dian)(dian)子(zi)和離子(zi)與(yu)進人(ren)(ren)電(dian)(dian)(dian)(dian)場的(de)(de)(de)(de)粉塵(chen)(chen)結(jie)合起來,使(shi)(shi)塵(chen)(chen)粒帶電(dian)(dian)(dian)(dian),帶電(dian)(dian)(dian)(dian)塵(chen)(chen)粒在電(dian)(dian)(dian)(dian)場力的(de)(de)(de)(de)作用(yong)(yong)下趨向本(ben)設(she)(she)備陽極(ji)(ji)(正極(ji)(ji)、本(ben)設(she)(she)備采用(yong)(yong)負高(gao)壓制)和陰極(ji)(ji)(負極(ji)(ji)) , 釋放出電(dian)(dian)(dian)(dian)子(zi)分別沉積在相應的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)極(ji)(ji)上,通(tong)過(guo)設(she)(she)備陰陽極(ji)(ji)振打系統的(de)(de)(de)(de)振打,使(shi)(shi)沉積在陰陽電(dian)(dian)(dian)(dian)極(ji)(ji)上的(de)(de)(de)(de)粉塵(chen)(chen)振落,進人(ren)(ren)集灰斗 通(tong)過(guo)排灰裝置放出,回收有(you)物(wu)料(liao),被)凈化的(de)(de)(de)(de)氣(qi)(qi)(qi)(qi)體(ti)排入(ru)大(da)氣(qi)(qi)(qi)(qi)。
工作原理
靜(jing)電(dian)除(chu)塵(chen)(chen)器(qi)的工(gong)作原(yuan)理是(shi)利用高壓(ya)(ya)電(dian)場使煙氣(qi)發(fa)生電(dian)離(li),氣(qi)流中的粉塵(chen)(chen)荷(he)電(dian)在電(dian)場作用下(xia)與氣(qi)流分離(li)。負極(ji)由(you)不同(tong)斷面形狀的金屬導線制成,叫放電(dian)電(dian)極(ji)。正極(ji)由(you)不同(tong)幾(ji)何形狀的金屬板制成,叫集(ji)塵(chen)(chen)電(dian)極(ji)。靜(jing)電(dian)除(chu)塵(chen)(chen)器(qi)的性(xing)能受粉塵(chen)(chen)性(xing)質、設備構造和煙氣(qi)流速等三(san)個因素的影響(xiang)。粉塵(chen)(chen)的比電(dian)阻(zu)是(shi)評價導電(dian)性(xing)的指(zhi)標,它對除(chu)塵(chen)(chen)效率有直接的影響(xiang)。比電(dian)阻(zu)過(guo)低,塵(chen)(chen)粒(li)難以保(bao)持在集(ji)塵(chen)(chen)電(dian)極(ji)上,致使其(qi)重(zhong)返氣(qi)流。比電(dian)阻(zu)過(guo)高,到達集(ji)塵(chen)(chen)電(dian)極(ji)的塵(chen)(chen)粒(li)電(dian)荷(he)不易放出,在塵(chen)(chen)層之間形成電(dian)壓(ya)(ya)梯(ti)度會(hui)產生局部(bu)擊穿和放電(dian)現象(xiang)。這些(xie)情況都會(hui)造成除(chu)塵(chen)(chen)效率下(xia)降(jiang)。
電(dian)(dian)(dian)除(chu)塵(chen)器的(de)基本(ben)原理是利用(yong)電(dian)(dian)(dian)力捕集(ji)煙(yan)氣中(zhong)的(de)粉(fen)(fen)塵(chen),主(zhu)要包(bao)括以下四個相(xiang)互有關(guan)的(de)物理過程: (1) 氣體(ti)的(de)電(dian)(dian)(dian)離。(2) 粉(fen)(fen)塵(chen)的(de)荷電(dian)(dian)(dian)。(3) 荷電(dian)(dian)(dian)粉(fen)(fen)塵(chen)向電(dian)(dian)(dian)極移動。(4) 荷電(dian)(dian)(dian)粉(fen)(fen)塵(chen)的(de)捕集(ji)。