XWD型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)靜電(dian)(dian)(dian)(dian)除塵(chen)器是(shi)以(yi)靜電(dian)(dian)(dian)(dian)凈(jing)化法來收(shou)(shou)捕廢(fei)氣(qi)(qi)中的(de)(de)(de)(de)(de)粉(fen)塵(chen),它的(de)(de)(de)(de)(de)凈(jing)化工作(zuo)(zuo)上(shang)要是(shi)依靠(kao)電(dian)(dian)(dian)(dian)暈極(ji)(ji)和(he)沉淀(dian)兩個系統來完成的(de)(de)(de)(de)(de),當含(han)塵(chen)氣(qi)(qi)體(ti)進(jin)人(ren)氣(qi)(qi)刺叭時,含(han)塵(chen)氣(qi)(qi)體(ti)受(shou)到氣(qi)(qi)流(liu)分布(bu)板(ban)以(yi)及折流(liu)板(ban)的(de)(de)(de)(de)(de)調整(zheng)后,使氣(qi)(qi)流(liu)能較均勻地進(jin)人(ren)電(dian)(dian)(dian)(dian)場。在橫(heng)斷面擴大的(de)(de)(de)(de)(de)作(zuo)(zuo)用下(xia)(xia),氣(qi)(qi)流(liu)速度迅(xun)速降(jiang)低,其中有些較重的(de)(de)(de)(de)(de)塵(chen)粒便失(shi)去速度而(er)沉降(jiang)下(xia)(xia)來。進(jin)人(ren)電(dian)(dian)(dian)(dian)場的(de)(de)(de)(de)(de)含(han)塵(chen)氣(qi)(qi)體(ti)由于(yu)電(dian)(dian)(dian)(dian)暈極(ji)(ji)通人(ren)高壓(ya)直流(liu)電(dian)(dian)(dian)(dian),則在電(dian)(dian)(dian)(dian)暈極(ji)(ji)附近產(chan)生電(dian)(dian)(dian)(dian)暈現象,使氣(qi)(qi)體(ti)電(dian)(dian)(dian)(dian)離,電(dian)(dian)(dian)(dian)離后的(de)(de)(de)(de)(de)氣(qi)(qi)體(ti)中存在大量的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)子(zi)和(he)離子(zi),這些電(dian)(dian)(dian)(dian)子(zi)和(he)離子(zi)與(yu)進(jin)人(ren)電(dian)(dian)(dian)(dian)場的(de)(de)(de)(de)(de)粉(fen)塵(chen)結合(he)起來,使塵(chen)粒帶(dai)電(dian)(dian)(dian)(dian),帶(dai)電(dian)(dian)(dian)(dian)塵(chen)粒在電(dian)(dian)(dian)(dian)場力的(de)(de)(de)(de)(de)作(zuo)(zuo)用下(xia)(xia)趨向本設(she)備陽極(ji)(ji)(正(zheng)極(ji)(ji)、本設(she)備采用負高壓(ya)制)和(he)陰極(ji)(ji)(負極(ji)(ji)) , 釋放(fang)出(chu)電(dian)(dian)(dian)(dian)子(zi)分別沉積在相應的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)極(ji)(ji)上(shang),通過設(she)備陰陽極(ji)(ji)振(zhen)打系統的(de)(de)(de)(de)(de)振(zhen)打,使沉積在陰陽電(dian)(dian)(dian)(dian)極(ji)(ji)上(shang)的(de)(de)(de)(de)(de)粉(fen)塵(chen)振(zhen)落(luo),進(jin)人(ren)集(ji)灰(hui)斗 通過排灰(hui)裝(zhuang)置(zhi)放(fang)出(chu),回(hui)收(shou)(shou)有物(wu)料(liao),被)凈(jing)化的(de)(de)(de)(de)(de)氣(qi)(qi)體(ti)排入(ru)大氣(qi)(qi)。
工(gong)作(zuo)原理
靜(jing)電(dian)除(chu)塵(chen)(chen)(chen)器的(de)(de)(de)工作原理(li)是(shi)利用高壓(ya)電(dian)場使煙(yan)氣(qi)發生電(dian)離,氣(qi)流(liu)中的(de)(de)(de)粉(fen)塵(chen)(chen)(chen)荷(he)電(dian)在電(dian)場作用下與氣(qi)流(liu)分(fen)離。負極(ji)由(you)不(bu)同斷面形狀的(de)(de)(de)金屬導(dao)線制成,叫放(fang)電(dian)電(dian)極(ji)。正極(ji)由(you)不(bu)同幾何形狀的(de)(de)(de)金屬板制成,叫集(ji)塵(chen)(chen)(chen)電(dian)極(ji)。靜(jing)電(dian)除(chu)塵(chen)(chen)(chen)器的(de)(de)(de)性能受粉(fen)塵(chen)(chen)(chen)性質、設備構造和煙(yan)氣(qi)流(liu)速等三個因素的(de)(de)(de)影(ying)(ying)響。粉(fen)塵(chen)(chen)(chen)的(de)(de)(de)比電(dian)阻是(shi)評(ping)價導(dao)電(dian)性的(de)(de)(de)指標,它對除(chu)塵(chen)(chen)(chen)效率有直接的(de)(de)(de)影(ying)(ying)響。比電(dian)阻過低,塵(chen)(chen)(chen)粒難以保持在集(ji)塵(chen)(chen)(chen)電(dian)極(ji)上,致使其(qi)重返氣(qi)流(liu)。比電(dian)阻過高,到(dao)達集(ji)塵(chen)(chen)(chen)電(dian)極(ji)的(de)(de)(de)塵(chen)(chen)(chen)粒電(dian)荷(he)不(bu)易放(fang)出,在塵(chen)(chen)(chen)層之間形成電(dian)壓(ya)梯度會產生局部(bu)擊(ji)穿和放(fang)電(dian)現象。這些(xie)情況都會造成除(chu)塵(chen)(chen)(chen)效率下降(jiang)。
電(dian)除塵器的(de)基(ji)本原理是利用電(dian)力捕集煙氣中(zhong)的(de)粉(fen)塵,主要包括以下四個相互有關(guan)的(de)物理過程: (1) 氣體的(de)電(dian)離。(2) 粉(fen)塵的(de)荷電(dian)。(3) 荷電(dian)粉(fen)塵向(xiang)電(dian)極移動。(4) 荷電(dian)粉(fen)塵的(de)捕集。