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(wo)式靜(jing)(jing)電(dian)(dian)(dian)(dian)(dian)(dian)除塵(chen)(chen)(chen)器是(shi)以靜(jing)(jing)電(dian)(dian)(dian)(dian)(dian)(dian)凈(jing)化法來收捕廢氣(qi)中的(de)(de)(de)粉塵(chen)(chen)(chen),它的(de)(de)(de)凈(jing)化工作(zuo)上要(yao)是(shi)依靠電(dian)(dian)(dian)(dian)(dian)(dian)暈極(ji)(ji)(ji)(ji)和(he)(he)沉(chen)淀兩個(ge)系統來完成的(de)(de)(de),當含塵(chen)(chen)(chen)氣(qi)體(ti)(ti)進(jin)人(ren)氣(qi)刺叭時,含塵(chen)(chen)(chen)氣(qi)體(ti)(ti)受到氣(qi)流(liu)分布板以及折流(liu)板的(de)(de)(de)調整后,使氣(qi)流(liu)能較均勻地進(jin)人(ren)電(dian)(dian)(dian)(dian)(dian)(dian)場(chang)。在(zai)(zai)橫斷面擴大(da)的(de)(de)(de)作(zuo)用下,氣(qi)流(liu)速(su)度(du)迅速(su)降(jiang)低,其中有些較重的(de)(de)(de)塵(chen)(chen)(chen)粒(li)便失去速(su)度(du)而(er)沉(chen)降(jiang)下來。進(jin)人(ren)電(dian)(dian)(dian)(dian)(dian)(dian)場(chang)的(de)(de)(de)含塵(chen)(chen)(chen)氣(qi)體(ti)(ti)由(you)于電(dian)(dian)(dian)(dian)(dian)(dian)暈極(ji)(ji)(ji)(ji)通人(ren)高壓直(zhi)流(liu)電(dian)(dian)(dian)(dian)(dian)(dian),則在(zai)(zai)電(dian)(dian)(dian)(dian)(dian)(dian)暈極(ji)(ji)(ji)(ji)附(fu)近產生電(dian)(dian)(dian)(dian)(dian)(dian)暈現象,使氣(qi)體(ti)(ti)電(dian)(dian)(dian)(dian)(dian)(dian)離(li),電(dian)(dian)(dian)(dian)(dian)(dian)離(li)后的(de)(de)(de)氣(qi)體(ti)(ti)中存在(zai)(zai)大(da)量(liang)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)子和(he)(he)離(li)子,這(zhe)些電(dian)(dian)(dian)(dian)(dian)(dian)子和(he)(he)離(li)子與進(jin)人(ren)電(dian)(dian)(dian)(dian)(dian)(dian)場(chang)的(de)(de)(de)粉塵(chen)(chen)(chen)結合起(qi)來,使塵(chen)(chen)(chen)粒(li)帶(dai)電(dian)(dian)(dian)(dian)(dian)(dian),帶(dai)電(dian)(dian)(dian)(dian)(dian)(dian)塵(chen)(chen)(chen)粒(li)在(zai)(zai)電(dian)(dian)(dian)(dian)(dian)(dian)場(chang)力(li)的(de)(de)(de)作(zuo)用下趨向本(ben)設(she)備(bei)(bei)陽(yang)極(ji)(ji)(ji)(ji)(正(zheng)極(ji)(ji)(ji)(ji)、本(ben)設(she)備(bei)(bei)采用負高壓制)和(he)(he)陰(yin)(yin)極(ji)(ji)(ji)(ji)(負極(ji)(ji)(ji)(ji)) , 釋(shi)放出電(dian)(dian)(dian)(dian)(dian)(dian)子分別沉(chen)積在(zai)(zai)相應的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)(ji)上,通過(guo)設(she)備(bei)(bei)陰(yin)(yin)陽(yang)極(ji)(ji)(ji)(ji)振(zhen)(zhen)打(da)系統的(de)(de)(de)振(zhen)(zhen)打(da),使沉(chen)積在(zai)(zai)陰(yin)(yin)陽(yang)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)(ji)上的(de)(de)(de)粉塵(chen)(chen)(chen)振(zhen)(zhen)落,進(jin)人(ren)集灰斗(dou) 通過(guo)排灰裝置放出,回(hui)收有物料,被(bei))凈(jing)化的(de)(de)(de)氣(qi)體(ti)(ti)排入大(da)氣(qi)。
工作原理
靜電(dian)(dian)(dian)(dian)除塵(chen)(chen)(chen)器的(de)(de)工作原(yuan)理是利用(yong)高壓(ya)電(dian)(dian)(dian)(dian)場使煙氣發生電(dian)(dian)(dian)(dian)離,氣流(liu)中(zhong)的(de)(de)粉塵(chen)(chen)(chen)荷(he)電(dian)(dian)(dian)(dian)在電(dian)(dian)(dian)(dian)場作用(yong)下與氣流(liu)分(fen)離。負(fu)極(ji)(ji)(ji)由不(bu)同(tong)斷面形狀(zhuang)的(de)(de)金屬(shu)導線制成,叫放(fang)(fang)電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)極(ji)(ji)(ji)。正極(ji)(ji)(ji)由不(bu)同(tong)幾何(he)形狀(zhuang)的(de)(de)金屬(shu)板制成,叫集(ji)(ji)塵(chen)(chen)(chen)電(dian)(dian)(dian)(dian)極(ji)(ji)(ji)。靜電(dian)(dian)(dian)(dian)除塵(chen)(chen)(chen)器的(de)(de)性(xing)(xing)能受粉塵(chen)(chen)(chen)性(xing)(xing)質、設(she)備(bei)構造和煙氣流(liu)速等三個因(yin)素的(de)(de)影響。粉塵(chen)(chen)(chen)的(de)(de)比(bi)(bi)電(dian)(dian)(dian)(dian)阻(zu)(zu)是評價導電(dian)(dian)(dian)(dian)性(xing)(xing)的(de)(de)指標,它對除塵(chen)(chen)(chen)效(xiao)率有直接的(de)(de)影響。比(bi)(bi)電(dian)(dian)(dian)(dian)阻(zu)(zu)過低,塵(chen)(chen)(chen)粒難以保持在集(ji)(ji)塵(chen)(chen)(chen)電(dian)(dian)(dian)(dian)極(ji)(ji)(ji)上(shang),致使其重返氣流(liu)。比(bi)(bi)電(dian)(dian)(dian)(dian)阻(zu)(zu)過高,到達集(ji)(ji)塵(chen)(chen)(chen)電(dian)(dian)(dian)(dian)極(ji)(ji)(ji)的(de)(de)塵(chen)(chen)(chen)粒電(dian)(dian)(dian)(dian)荷(he)不(bu)易放(fang)(fang)出,在塵(chen)(chen)(chen)層之間(jian)形成電(dian)(dian)(dian)(dian)壓(ya)梯度會(hui)產生局部擊穿和放(fang)(fang)電(dian)(dian)(dian)(dian)現象。這些(xie)情況都會(hui)造成除塵(chen)(chen)(chen)效(xiao)率下降。
電(dian)(dian)除塵(chen)(chen)器的(de)(de)基本原理(li)是利用電(dian)(dian)力捕集煙氣中的(de)(de)粉(fen)(fen)塵(chen)(chen),主要(yao)包括(kuo)以(yi)下四個相互有關的(de)(de)物理(li)過程(cheng): (1) 氣體(ti)的(de)(de)電(dian)(dian)離。(2) 粉(fen)(fen)塵(chen)(chen)的(de)(de)荷(he)(he)電(dian)(dian)。(3) 荷(he)(he)電(dian)(dian)粉(fen)(fen)塵(chen)(chen)向電(dian)(dian)極(ji)移動。(4) 荷(he)(he)電(dian)(dian)粉(fen)(fen)塵(chen)(chen)的(de)(de)捕集。