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)式靜電(dian)(dian)(dian)除塵(chen)(chen)器是以(yi)靜電(dian)(dian)(dian)凈(jing)化法來收(shou)捕廢氣(qi)(qi)中(zhong)(zhong)的(de)(de)(de)粉塵(chen)(chen),它的(de)(de)(de)凈(jing)化工作(zuo)(zuo)上要是依(yi)靠電(dian)(dian)(dian)暈極(ji)(ji)(ji)(ji)和沉淀兩個系(xi)統來完成的(de)(de)(de),當(dang)含(han)(han)塵(chen)(chen)氣(qi)(qi)體(ti)(ti)(ti)進(jin)(jin)人氣(qi)(qi)刺叭(ba)時(shi),含(han)(han)塵(chen)(chen)氣(qi)(qi)體(ti)(ti)(ti)受到氣(qi)(qi)流(liu)分布板以(yi)及折流(liu)板的(de)(de)(de)調整(zheng)后(hou),使氣(qi)(qi)流(liu)能較(jiao)均勻(yun)地進(jin)(jin)人電(dian)(dian)(dian)場(chang)(chang)。在(zai)橫斷(duan)面擴大(da)的(de)(de)(de)作(zuo)(zuo)用下,氣(qi)(qi)流(liu)速度(du)(du)迅速降(jiang)低,其(qi)中(zhong)(zhong)有些(xie)較(jiao)重(zhong)的(de)(de)(de)塵(chen)(chen)粒便失去速度(du)(du)而沉降(jiang)下來。進(jin)(jin)人電(dian)(dian)(dian)場(chang)(chang)的(de)(de)(de)含(han)(han)塵(chen)(chen)氣(qi)(qi)體(ti)(ti)(ti)由于電(dian)(dian)(dian)暈極(ji)(ji)(ji)(ji)通(tong)人高壓直(zhi)流(liu)電(dian)(dian)(dian),則在(zai)電(dian)(dian)(dian)暈極(ji)(ji)(ji)(ji)附近產生電(dian)(dian)(dian)暈現(xian)象,使氣(qi)(qi)體(ti)(ti)(ti)電(dian)(dian)(dian)離(li)(li),電(dian)(dian)(dian)離(li)(li)后(hou)的(de)(de)(de)氣(qi)(qi)體(ti)(ti)(ti)中(zhong)(zhong)存(cun)在(zai)大(da)量(liang)的(de)(de)(de)電(dian)(dian)(dian)子和離(li)(li)子,這些(xie)電(dian)(dian)(dian)子和離(li)(li)子與(yu)進(jin)(jin)人電(dian)(dian)(dian)場(chang)(chang)的(de)(de)(de)粉塵(chen)(chen)結合(he)起來,使塵(chen)(chen)粒帶電(dian)(dian)(dian),帶電(dian)(dian)(dian)塵(chen)(chen)粒在(zai)電(dian)(dian)(dian)場(chang)(chang)力的(de)(de)(de)作(zuo)(zuo)用下趨向(xiang)本設(she)備(bei)陽(yang)極(ji)(ji)(ji)(ji)(正極(ji)(ji)(ji)(ji)、本設(she)備(bei)采(cai)用負高壓制)和陰極(ji)(ji)(ji)(ji)(負極(ji)(ji)(ji)(ji)) , 釋(shi)放出(chu)電(dian)(dian)(dian)子分別沉積(ji)在(zai)相應的(de)(de)(de)電(dian)(dian)(dian)極(ji)(ji)(ji)(ji)上,通(tong)過設(she)備(bei)陰陽(yang)極(ji)(ji)(ji)(ji)振(zhen)(zhen)打系(xi)統的(de)(de)(de)振(zhen)(zhen)打,使沉積(ji)在(zai)陰陽(yang)電(dian)(dian)(dian)極(ji)(ji)(ji)(ji)上的(de)(de)(de)粉塵(chen)(chen)振(zhen)(zhen)落,進(jin)(jin)人集(ji)灰斗 通(tong)過排(pai)灰裝置放出(chu),回收(shou)有物(wu)料,被)凈(jing)化的(de)(de)(de)氣(qi)(qi)體(ti)(ti)(ti)排(pai)入大(da)氣(qi)(qi)。
工作(zuo)原理(li)
靜電(dian)除塵(chen)(chen)(chen)(chen)器的(de)(de)工(gong)作(zuo)原理是(shi)利用(yong)高壓電(dian)場(chang)使煙氣(qi)發生電(dian)離(li),氣(qi)流中的(de)(de)粉(fen)(fen)塵(chen)(chen)(chen)(chen)荷電(dian)在(zai)(zai)電(dian)場(chang)作(zuo)用(yong)下與(yu)氣(qi)流分離(li)。負極(ji)由不同斷面形狀(zhuang)的(de)(de)金(jin)屬導(dao)(dao)線制成(cheng)(cheng),叫(jiao)放電(dian)電(dian)極(ji)。正極(ji)由不同幾何(he)形狀(zhuang)的(de)(de)金(jin)屬板制成(cheng)(cheng),叫(jiao)集塵(chen)(chen)(chen)(chen)電(dian)極(ji)。靜電(dian)除塵(chen)(chen)(chen)(chen)器的(de)(de)性能受粉(fen)(fen)塵(chen)(chen)(chen)(chen)性質、設備構造(zao)和煙氣(qi)流速等三個因素(su)的(de)(de)影響。粉(fen)(fen)塵(chen)(chen)(chen)(chen)的(de)(de)比(bi)電(dian)阻(zu)是(shi)評價(jia)導(dao)(dao)電(dian)性的(de)(de)指標,它對除塵(chen)(chen)(chen)(chen)效(xiao)率有直接的(de)(de)影響。比(bi)電(dian)阻(zu)過(guo)低,塵(chen)(chen)(chen)(chen)粒難以保持在(zai)(zai)集塵(chen)(chen)(chen)(chen)電(dian)極(ji)上,致使其重(zhong)返(fan)氣(qi)流。比(bi)電(dian)阻(zu)過(guo)高,到(dao)達集塵(chen)(chen)(chen)(chen)電(dian)極(ji)的(de)(de)塵(chen)(chen)(chen)(chen)粒電(dian)荷不易放出,在(zai)(zai)塵(chen)(chen)(chen)(chen)層之間形成(cheng)(cheng)電(dian)壓梯度會(hui)產生局部擊穿和放電(dian)現象(xiang)。這些情況都(dou)會(hui)造(zao)成(cheng)(cheng)除塵(chen)(chen)(chen)(chen)效(xiao)率下降。
電(dian)除(chu)塵(chen)(chen)(chen)器的(de)基(ji)本(ben)原理是利用電(dian)力(li)捕集(ji)煙氣中的(de)粉(fen)塵(chen)(chen)(chen),主(zhu)要包括以下四個(ge)相互有關的(de)物理過程: (1) 氣體的(de)電(dian)離。(2) 粉(fen)塵(chen)(chen)(chen)的(de)荷(he)電(dian)。(3) 荷(he)電(dian)粉(fen)塵(chen)(chen)(chen)向電(dian)極移動。(4) 荷(he)電(dian)粉(fen)塵(chen)(chen)(chen)的(de)捕集(ji)。