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(shi)靜(jing)電(dian)(dian)(dian)(dian)除塵(chen)(chen)器(qi)是(shi)以(yi)靜(jing)電(dian)(dian)(dian)(dian)凈化(hua)法來(lai)(lai)收捕廢(fei)氣(qi)(qi)中(zhong)(zhong)的(de)(de)粉(fen)塵(chen)(chen),它的(de)(de)凈化(hua)工作上要(yao)是(shi)依(yi)靠電(dian)(dian)(dian)(dian)暈極(ji)(ji)(ji)和沉淀兩(liang)個系(xi)統來(lai)(lai)完成的(de)(de),當含塵(chen)(chen)氣(qi)(qi)體(ti)(ti)進(jin)人(ren)(ren)(ren)氣(qi)(qi)刺叭時,含塵(chen)(chen)氣(qi)(qi)體(ti)(ti)受到氣(qi)(qi)流(liu)分布板以(yi)及折流(liu)板的(de)(de)調(diao)整后,使(shi)氣(qi)(qi)流(liu)能較均(jun)勻(yun)地進(jin)人(ren)(ren)(ren)電(dian)(dian)(dian)(dian)場(chang)(chang)。在(zai)橫斷面(mian)擴(kuo)大的(de)(de)作用(yong)下(xia),氣(qi)(qi)流(liu)速度迅(xun)速降低,其中(zhong)(zhong)有些較重的(de)(de)塵(chen)(chen)粒(li)便失(shi)去速度而沉降下(xia)來(lai)(lai)。進(jin)人(ren)(ren)(ren)電(dian)(dian)(dian)(dian)場(chang)(chang)的(de)(de)含塵(chen)(chen)氣(qi)(qi)體(ti)(ti)由于(yu)電(dian)(dian)(dian)(dian)暈極(ji)(ji)(ji)通(tong)人(ren)(ren)(ren)高壓(ya)直流(liu)電(dian)(dian)(dian)(dian),則在(zai)電(dian)(dian)(dian)(dian)暈極(ji)(ji)(ji)附近(jin)產生電(dian)(dian)(dian)(dian)暈現象,使(shi)氣(qi)(qi)體(ti)(ti)電(dian)(dian)(dian)(dian)離,電(dian)(dian)(dian)(dian)離后的(de)(de)氣(qi)(qi)體(ti)(ti)中(zhong)(zhong)存在(zai)大量的(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)與進(jin)人(ren)(ren)(ren)電(dian)(dian)(dian)(dian)場(chang)(chang)的(de)(de)粉(fen)塵(chen)(chen)結合(he)起來(lai)(lai),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(chang)(chang)力(li)的(de)(de)作用(yong)下(xia)趨向本設(she)備(bei)陽(yang)極(ji)(ji)(ji)(正(zheng)極(ji)(ji)(ji)、本設(she)備(bei)采用(yong)負高壓(ya)制(zhi))和陰(yin)極(ji)(ji)(ji)(負極(ji)(ji)(ji)) , 釋(shi)放(fang)出電(dian)(dian)(dian)(dian)子(zi)分別沉積在(zai)相(xiang)應(ying)的(de)(de)電(dian)(dian)(dian)(dian)極(ji)(ji)(ji)上,通(tong)過設(she)備(bei)陰(yin)陽(yang)極(ji)(ji)(ji)振(zhen)打系(xi)統的(de)(de)振(zhen)打,使(shi)沉積在(zai)陰(yin)陽(yang)電(dian)(dian)(dian)(dian)極(ji)(ji)(ji)上的(de)(de)粉(fen)塵(chen)(chen)振(zhen)落,進(jin)人(ren)(ren)(ren)集灰(hui)斗 通(tong)過排(pai)(pai)灰(hui)裝(zhuang)置放(fang)出,回收有物料,被)凈化(hua)的(de)(de)氣(qi)(qi)體(ti)(ti)排(pai)(pai)入(ru)大氣(qi)(qi)。
工作原理
靜(jing)(jing)電(dian)(dian)(dian)(dian)(dian)除塵(chen)器的工作原理是利(li)用(yong)高壓電(dian)(dian)(dian)(dian)(dian)場使煙(yan)氣(qi)(qi)發生(sheng)電(dian)(dian)(dian)(dian)(dian)離,氣(qi)(qi)流(liu)中(zhong)的粉塵(chen)荷電(dian)(dian)(dian)(dian)(dian)在電(dian)(dian)(dian)(dian)(dian)場作用(yong)下與氣(qi)(qi)流(liu)分離。負(fu)極由不同斷面(mian)形狀(zhuang)的金(jin)屬導線制成(cheng)(cheng),叫放(fang)電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)極。正極由不同幾何形狀(zhuang)的金(jin)屬板制成(cheng)(cheng),叫集塵(chen)電(dian)(dian)(dian)(dian)(dian)極。靜(jing)(jing)電(dian)(dian)(dian)(dian)(dian)除塵(chen)器的性(xing)(xing)能受粉塵(chen)性(xing)(xing)質(zhi)、設備構造和煙(yan)氣(qi)(qi)流(liu)速等三個因素的影響(xiang)。粉塵(chen)的比(bi)(bi)電(dian)(dian)(dian)(dian)(dian)阻是評價導電(dian)(dian)(dian)(dian)(dian)性(xing)(xing)的指標,它對除塵(chen)效(xiao)率(lv)有直(zhi)接的影響(xiang)。比(bi)(bi)電(dian)(dian)(dian)(dian)(dian)阻過(guo)低,塵(chen)粒難以(yi)保持在集塵(chen)電(dian)(dian)(dian)(dian)(dian)極上,致使其重(zhong)返(fan)氣(qi)(qi)流(liu)。比(bi)(bi)電(dian)(dian)(dian)(dian)(dian)阻過(guo)高,到達集塵(chen)電(dian)(dian)(dian)(dian)(dian)極的塵(chen)粒電(dian)(dian)(dian)(dian)(dian)荷不易放(fang)出,在塵(chen)層之間形成(cheng)(cheng)電(dian)(dian)(dian)(dian)(dian)壓梯度會產生(sheng)局(ju)部擊穿和放(fang)電(dian)(dian)(dian)(dian)(dian)現象(xiang)。這些情況都會造成(cheng)(cheng)除塵(chen)效(xiao)率(lv)下降。
電(dian)除(chu)塵(chen)(chen)器的(de)(de)基本原理(li)是利用(yong)電(dian)力捕集(ji)(ji)煙(yan)氣(qi)(qi)中(zhong)的(de)(de)粉塵(chen)(chen),主要包括以下(xia)四個相互有關的(de)(de)物理(li)過程: (1) 氣(qi)(qi)體的(de)(de)電(dian)離。(2) 粉塵(chen)(chen)的(de)(de)荷電(dian)。(3) 荷電(dian)粉塵(chen)(chen)向(xiang)電(dian)極(ji)移(yi)動。(4) 荷電(dian)粉塵(chen)(chen)的(de)(de)捕集(ji)(ji)。