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)除(chu)塵器是以靜(jing)(jing)電(dian)(dian)(dian)(dian)(dian)凈化法來收(shou)捕廢氣(qi)(qi)(qi)(qi)中的(de)(de)粉塵,它的(de)(de)凈化工作(zuo)(zuo)上(shang)要(yao)是依靠電(dian)(dian)(dian)(dian)(dian)暈(yun)極和(he)(he)沉淀兩(liang)個系統(tong)來完成(cheng)的(de)(de),當含(han)塵氣(qi)(qi)(qi)(qi)體(ti)進(jin)人氣(qi)(qi)(qi)(qi)刺叭時,含(han)塵氣(qi)(qi)(qi)(qi)體(ti)受到氣(qi)(qi)(qi)(qi)流(liu)(liu)分(fen)布板(ban)以及折(zhe)流(liu)(liu)板(ban)的(de)(de)調(diao)整后,使氣(qi)(qi)(qi)(qi)流(liu)(liu)能(neng)較均勻地進(jin)人電(dian)(dian)(dian)(dian)(dian)場(chang)(chang)。在(zai)橫斷面擴(kuo)大的(de)(de)作(zuo)(zuo)用下(xia),氣(qi)(qi)(qi)(qi)流(liu)(liu)速度迅速降低,其中有些較重的(de)(de)塵粒(li)便失去速度而沉降下(xia)來。進(jin)人電(dian)(dian)(dian)(dian)(dian)場(chang)(chang)的(de)(de)含(han)塵氣(qi)(qi)(qi)(qi)體(ti)由于電(dian)(dian)(dian)(dian)(dian)暈(yun)極通(tong)人高壓(ya)(ya)直流(liu)(liu)電(dian)(dian)(dian)(dian)(dian),則在(zai)電(dian)(dian)(dian)(dian)(dian)暈(yun)極附近產生電(dian)(dian)(dian)(dian)(dian)暈(yun)現象(xiang),使氣(qi)(qi)(qi)(qi)體(ti)電(dian)(dian)(dian)(dian)(dian)離,電(dian)(dian)(dian)(dian)(dian)離后的(de)(de)氣(qi)(qi)(qi)(qi)體(ti)中存在(zai)大量的(de)(de)電(dian)(dian)(dian)(dian)(dian)子和(he)(he)離子,這(zhe)些電(dian)(dian)(dian)(dian)(dian)子和(he)(he)離子與進(jin)人電(dian)(dian)(dian)(dian)(dian)場(chang)(chang)的(de)(de)粉塵結合起來,使塵粒(li)帶(dai)電(dian)(dian)(dian)(dian)(dian),帶(dai)電(dian)(dian)(dian)(dian)(dian)塵粒(li)在(zai)電(dian)(dian)(dian)(dian)(dian)場(chang)(chang)力的(de)(de)作(zuo)(zuo)用下(xia)趨(qu)向本設(she)(she)備(bei)陽極(正(zheng)極、本設(she)(she)備(bei)采用負(fu)高壓(ya)(ya)制)和(he)(he)陰(yin)極(負(fu)極) , 釋放出電(dian)(dian)(dian)(dian)(dian)子分(fen)別(bie)沉積在(zai)相應的(de)(de)電(dian)(dian)(dian)(dian)(dian)極上(shang),通(tong)過設(she)(she)備(bei)陰(yin)陽極振打系統(tong)的(de)(de)振打,使沉積在(zai)陰(yin)陽電(dian)(dian)(dian)(dian)(dian)極上(shang)的(de)(de)粉塵振落,進(jin)人集灰斗 通(tong)過排灰裝置放出,回收(shou)有物料,被)凈化的(de)(de)氣(qi)(qi)(qi)(qi)體(ti)排入大氣(qi)(qi)(qi)(qi)。
工(gong)作原理(li)
靜(jing)電(dian)(dian)除(chu)塵(chen)器(qi)的(de)(de)(de)(de)(de)(de)工作原(yuan)理(li)是(shi)利用高壓(ya)電(dian)(dian)場使煙(yan)氣發生電(dian)(dian)離(li),氣流(liu)中的(de)(de)(de)(de)(de)(de)粉塵(chen)荷電(dian)(dian)在電(dian)(dian)場作用下與氣流(liu)分離(li)。負極(ji)(ji)由(you)不(bu)同斷面形狀(zhuang)的(de)(de)(de)(de)(de)(de)金屬導(dao)線制(zhi)(zhi)成(cheng),叫(jiao)放電(dian)(dian)電(dian)(dian)極(ji)(ji)。正極(ji)(ji)由(you)不(bu)同幾何(he)形狀(zhuang)的(de)(de)(de)(de)(de)(de)金屬板制(zhi)(zhi)成(cheng),叫(jiao)集(ji)(ji)塵(chen)電(dian)(dian)極(ji)(ji)。靜(jing)電(dian)(dian)除(chu)塵(chen)器(qi)的(de)(de)(de)(de)(de)(de)性能受粉塵(chen)性質、設備(bei)構造(zao)和(he)煙(yan)氣流(liu)速等三(san)個因素(su)的(de)(de)(de)(de)(de)(de)影(ying)響(xiang)。粉塵(chen)的(de)(de)(de)(de)(de)(de)比(bi)電(dian)(dian)阻是(shi)評(ping)價導(dao)電(dian)(dian)性的(de)(de)(de)(de)(de)(de)指標,它對(dui)除(chu)塵(chen)效(xiao)率有直接的(de)(de)(de)(de)(de)(de)影(ying)響(xiang)。比(bi)電(dian)(dian)阻過低,塵(chen)粒難以(yi)保持在集(ji)(ji)塵(chen)電(dian)(dian)極(ji)(ji)上(shang),致使其重返氣流(liu)。比(bi)電(dian)(dian)阻過高,到(dao)達集(ji)(ji)塵(chen)電(dian)(dian)極(ji)(ji)的(de)(de)(de)(de)(de)(de)塵(chen)粒電(dian)(dian)荷不(bu)易放出,在塵(chen)層之間形成(cheng)電(dian)(dian)壓(ya)梯度會產生局(ju)部擊穿和(he)放電(dian)(dian)現象。這些(xie)情(qing)況都會造(zao)成(cheng)除(chu)塵(chen)效(xiao)率下降。
電除塵器(qi)的(de)基本原理是利用電力捕集(ji)煙氣(qi)(qi)中(zhong)的(de)粉(fen)塵,主(zhu)要包括以下四個相(xiang)互有關(guan)的(de)物理過程: (1) 氣(qi)(qi)體的(de)電離。(2) 粉(fen)塵的(de)荷(he)電。(3) 荷(he)電粉(fen)塵向電極移動。(4) 荷(he)電粉(fen)塵的(de)捕集(ji)。