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(jing)電(dian)(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)器(qi)是(shi)以靜(jing)電(dian)(dian)(dian)(dian)凈(jing)化(hua)法(fa)來(lai)收捕(bu)廢氣(qi)(qi)中的(de)(de)粉(fen)塵(chen)(chen)(chen),它的(de)(de)凈(jing)化(hua)工作(zuo)上(shang)要是(shi)依靠(kao)電(dian)(dian)(dian)(dian)暈(yun)極(ji)(ji)和沉(chen)淀兩個系統(tong)來(lai)完成的(de)(de),當含(han)塵(chen)(chen)(chen)氣(qi)(qi)體(ti)(ti)進(jin)人(ren)氣(qi)(qi)刺叭時,含(han)塵(chen)(chen)(chen)氣(qi)(qi)體(ti)(ti)受到(dao)氣(qi)(qi)流分布板以及折(zhe)流板的(de)(de)調整后,使(shi)(shi)氣(qi)(qi)流能較均(jun)勻地進(jin)人(ren)電(dian)(dian)(dian)(dian)場。在(zai)(zai)橫斷面擴大的(de)(de)作(zuo)用(yong)下,氣(qi)(qi)流速(su)度(du)迅速(su)降低,其中有些(xie)較重的(de)(de)塵(chen)(chen)(chen)粒便失去速(su)度(du)而沉(chen)降下來(lai)。進(jin)人(ren)電(dian)(dian)(dian)(dian)場的(de)(de)含(han)塵(chen)(chen)(chen)氣(qi)(qi)體(ti)(ti)由于電(dian)(dian)(dian)(dian)暈(yun)極(ji)(ji)通人(ren)高壓直流電(dian)(dian)(dian)(dian),則在(zai)(zai)電(dian)(dian)(dian)(dian)暈(yun)極(ji)(ji)附近產生電(dian)(dian)(dian)(dian)暈(yun)現象,使(shi)(shi)氣(qi)(qi)體(ti)(ti)電(dian)(dian)(dian)(dian)離(li),電(dian)(dian)(dian)(dian)離(li)后的(de)(de)氣(qi)(qi)體(ti)(ti)中存(cun)在(zai)(zai)大量的(de)(de)電(dian)(dian)(dian)(dian)子和離(li)子,這(zhe)些(xie)電(dian)(dian)(dian)(dian)子和離(li)子與進(jin)人(ren)電(dian)(dian)(dian)(dian)場的(de)(de)粉(fen)塵(chen)(chen)(chen)結合起來(lai),使(shi)(shi)塵(chen)(chen)(chen)粒帶電(dian)(dian)(dian)(dian),帶電(dian)(dian)(dian)(dian)塵(chen)(chen)(chen)粒在(zai)(zai)電(dian)(dian)(dian)(dian)場力的(de)(de)作(zuo)用(yong)下趨向(xiang)本設(she)備陽(yang)極(ji)(ji)(正極(ji)(ji)、本設(she)備采(cai)用(yong)負高壓制)和陰極(ji)(ji)(負極(ji)(ji)) , 釋(shi)放(fang)出(chu)電(dian)(dian)(dian)(dian)子分別沉(chen)積在(zai)(zai)相應的(de)(de)電(dian)(dian)(dian)(dian)極(ji)(ji)上(shang),通過設(she)備陰陽(yang)極(ji)(ji)振(zhen)打(da)系統(tong)的(de)(de)振(zhen)打(da),使(shi)(shi)沉(chen)積在(zai)(zai)陰陽(yang)電(dian)(dian)(dian)(dian)極(ji)(ji)上(shang)的(de)(de)粉(fen)塵(chen)(chen)(chen)振(zhen)落,進(jin)人(ren)集灰(hui)斗 通過排(pai)灰(hui)裝置放(fang)出(chu),回(hui)收有物料(liao),被(bei))凈(jing)化(hua)的(de)(de)氣(qi)(qi)體(ti)(ti)排(pai)入(ru)大氣(qi)(qi)。
工作(zuo)原(yuan)理
靜電(dian)(dian)(dian)(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)(chen)器(qi)的(de)工作(zuo)原(yuan)理是利(li)用高壓(ya)電(dian)(dian)(dian)(dian)(dian)(dian)場(chang)使(shi)煙(yan)氣(qi)(qi)發生電(dian)(dian)(dian)(dian)(dian)(dian)離,氣(qi)(qi)流(liu)中的(de)粉塵(chen)(chen)(chen)(chen)荷電(dian)(dian)(dian)(dian)(dian)(dian)在(zai)電(dian)(dian)(dian)(dian)(dian)(dian)場(chang)作(zuo)用下與氣(qi)(qi)流(liu)分離。負(fu)極(ji)(ji)由(you)不(bu)(bu)同斷面形狀(zhuang)的(de)金(jin)屬導線制成(cheng),叫放(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)。正極(ji)(ji)由(you)不(bu)(bu)同幾何形狀(zhuang)的(de)金(jin)屬板制成(cheng),叫集塵(chen)(chen)(chen)(chen)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)。靜電(dian)(dian)(dian)(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)(chen)器(qi)的(de)性能受粉塵(chen)(chen)(chen)(chen)性質、設備構造(zao)和煙(yan)氣(qi)(qi)流(liu)速等三(san)個因素的(de)影(ying)響。粉塵(chen)(chen)(chen)(chen)的(de)比(bi)電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)是評價導電(dian)(dian)(dian)(dian)(dian)(dian)性的(de)指標,它(ta)對(dui)除(chu)塵(chen)(chen)(chen)(chen)效(xiao)率(lv)有直接(jie)的(de)影(ying)響。比(bi)電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)過低,塵(chen)(chen)(chen)(chen)粒(li)難以保持在(zai)集塵(chen)(chen)(chen)(chen)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)上,致(zhi)使(shi)其重返氣(qi)(qi)流(liu)。比(bi)電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)過高,到(dao)達集塵(chen)(chen)(chen)(chen)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)的(de)塵(chen)(chen)(chen)(chen)粒(li)電(dian)(dian)(dian)(dian)(dian)(dian)荷不(bu)(bu)易放(fang)(fang)出,在(zai)塵(chen)(chen)(chen)(chen)層(ceng)之間(jian)形成(cheng)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)梯度會產生局(ju)部擊穿(chuan)和放(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)現象(xiang)。這些情(qing)況(kuang)都會造(zao)成(cheng)除(chu)塵(chen)(chen)(chen)(chen)效(xiao)率(lv)下降。
電(dian)除塵(chen)器的(de)基本原理(li)是利用(yong)電(dian)力捕集煙氣中的(de)粉(fen)(fen)塵(chen),主要包括(kuo)以(yi)下四個相互有關的(de)物理(li)過(guo)程: (1) 氣體的(de)電(dian)離。(2) 粉(fen)(fen)塵(chen)的(de)荷電(dian)。(3) 荷電(dian)粉(fen)(fen)塵(chen)向(xiang)電(dian)極(ji)移(yi)動。(4) 荷電(dian)粉(fen)(fen)塵(chen)的(de)捕集。