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。
臥式靜電(dian)(dian)除塵(chen)(chen)器(qi)是以靜電(dian)(dian)凈化(hua)法(fa)來收(shou)捕廢(fei)氣(qi)(qi)(qi)中(zhong)的(de)(de)粉(fen)塵(chen)(chen),它的(de)(de)凈化(hua)工(gong)作(zuo)上要是依靠電(dian)(dian)暈(yun)(yun)極(ji)和(he)(he)沉淀兩個系(xi)統來完成的(de)(de),當含塵(chen)(chen)氣(qi)(qi)(qi)體(ti)(ti)進人氣(qi)(qi)(qi)刺叭時,含塵(chen)(chen)氣(qi)(qi)(qi)體(ti)(ti)受到(dao)氣(qi)(qi)(qi)流分(fen)布(bu)板以及折流板的(de)(de)調整后,使氣(qi)(qi)(qi)流能較均(jun)勻地進人電(dian)(dian)場(chang)(chang)。在(zai)(zai)橫斷(duan)面擴大(da)的(de)(de)作(zuo)用下,氣(qi)(qi)(qi)流速(su)(su)度迅速(su)(su)降低,其中(zhong)有(you)些較重的(de)(de)塵(chen)(chen)粒便失去(qu)速(su)(su)度而沉降下來。進人電(dian)(dian)場(chang)(chang)的(de)(de)含塵(chen)(chen)氣(qi)(qi)(qi)體(ti)(ti)由(you)于(yu)電(dian)(dian)暈(yun)(yun)極(ji)通人高壓直流電(dian)(dian),則(ze)在(zai)(zai)電(dian)(dian)暈(yun)(yun)極(ji)附(fu)近產生電(dian)(dian)暈(yun)(yun)現象(xiang),使氣(qi)(qi)(qi)體(ti)(ti)電(dian)(dian)離,電(dian)(dian)離后的(de)(de)氣(qi)(qi)(qi)體(ti)(ti)中(zhong)存在(zai)(zai)大(da)量的(de)(de)電(dian)(dian)子和(he)(he)離子,這些電(dian)(dian)子和(he)(he)離子與進人電(dian)(dian)場(chang)(chang)的(de)(de)粉(fen)塵(chen)(chen)結合起來,使塵(chen)(chen)粒帶電(dian)(dian),帶電(dian)(dian)塵(chen)(chen)粒在(zai)(zai)電(dian)(dian)場(chang)(chang)力的(de)(de)作(zuo)用下趨向本設備(bei)(bei)陽(yang)極(ji)(正(zheng)極(ji)、本設備(bei)(bei)采用負高壓制)和(he)(he)陰極(ji)(負極(ji)) , 釋放出(chu)電(dian)(dian)子分(fen)別沉積在(zai)(zai)相應的(de)(de)電(dian)(dian)極(ji)上,通過設備(bei)(bei)陰陽(yang)極(ji)振打(da)系(xi)統的(de)(de)振打(da),使沉積在(zai)(zai)陰陽(yang)電(dian)(dian)極(ji)上的(de)(de)粉(fen)塵(chen)(chen)振落,進人集灰斗 通過排灰裝(zhuang)置放出(chu),回收(shou)有(you)物料,被)凈化(hua)的(de)(de)氣(qi)(qi)(qi)體(ti)(ti)排入大(da)氣(qi)(qi)(qi)。
工作(zuo)原(yuan)理
靜電(dian)(dian)除(chu)塵(chen)(chen)器(qi)的(de)(de)(de)工作原理是利用(yong)高壓電(dian)(dian)場(chang)使煙(yan)氣發(fa)生(sheng)電(dian)(dian)離,氣流(liu)中的(de)(de)(de)粉(fen)塵(chen)(chen)荷電(dian)(dian)在電(dian)(dian)場(chang)作用(yong)下(xia)與氣流(liu)分離。負(fu)極(ji)(ji)由不(bu)同(tong)斷面形(xing)狀(zhuang)(zhuang)的(de)(de)(de)金屬導線制成,叫放(fang)電(dian)(dian)電(dian)(dian)極(ji)(ji)。正極(ji)(ji)由不(bu)同(tong)幾何形(xing)狀(zhuang)(zhuang)的(de)(de)(de)金屬板制成,叫集塵(chen)(chen)電(dian)(dian)極(ji)(ji)。靜電(dian)(dian)除(chu)塵(chen)(chen)器(qi)的(de)(de)(de)性能受粉(fen)塵(chen)(chen)性質、設備構造(zao)和(he)煙(yan)氣流(liu)速等三個因素的(de)(de)(de)影響(xiang)。粉(fen)塵(chen)(chen)的(de)(de)(de)比(bi)電(dian)(dian)阻是評(ping)價導電(dian)(dian)性的(de)(de)(de)指標,它對(dui)除(chu)塵(chen)(chen)效率有直接的(de)(de)(de)影響(xiang)。比(bi)電(dian)(dian)阻過低,塵(chen)(chen)粒(li)難以保持在集塵(chen)(chen)電(dian)(dian)極(ji)(ji)上(shang),致(zhi)使其重返氣流(liu)。比(bi)電(dian)(dian)阻過高,到達集塵(chen)(chen)電(dian)(dian)極(ji)(ji)的(de)(de)(de)塵(chen)(chen)粒(li)電(dian)(dian)荷不(bu)易放(fang)出,在塵(chen)(chen)層之間形(xing)成電(dian)(dian)壓梯度會產生(sheng)局部擊穿和(he)放(fang)電(dian)(dian)現象。這些情況都(dou)會造(zao)成除(chu)塵(chen)(chen)效率下(xia)降(jiang)。
電(dian)(dian)除塵(chen)器(qi)的基本(ben)原理(li)是(shi)利(li)用電(dian)(dian)力(li)捕集煙氣中的粉塵(chen),主(zhu)要包括以下四(si)個相互有關的物理(li)過程: (1) 氣體的電(dian)(dian)離(li)。(2) 粉塵(chen)的荷(he)(he)電(dian)(dian)。(3) 荷(he)(he)電(dian)(dian)粉塵(chen)向電(dian)(dian)極移動。(4) 荷(he)(he)電(dian)(dian)粉塵(chen)的捕集。