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)除塵器是(shi)以靜電(dian)(dian)(dian)凈化法來(lai)收(shou)捕廢氣(qi)(qi)中(zhong)的(de)(de)(de)粉(fen)(fen)塵,它(ta)的(de)(de)(de)凈化工作(zuo)上(shang)要是(shi)依(yi)靠電(dian)(dian)(dian)暈(yun)極(ji)(ji)(ji)和沉淀兩個系(xi)統(tong)(tong)來(lai)完成(cheng)的(de)(de)(de),當(dang)含塵氣(qi)(qi)體(ti)進(jin)人氣(qi)(qi)刺(ci)叭時,含塵氣(qi)(qi)體(ti)受到氣(qi)(qi)流(liu)分(fen)布板以及折流(liu)板的(de)(de)(de)調整后,使氣(qi)(qi)流(liu)能(neng)較(jiao)均勻地(di)進(jin)人電(dian)(dian)(dian)場(chang)。在(zai)橫斷(duan)面擴大的(de)(de)(de)作(zuo)用(yong)下,氣(qi)(qi)流(liu)速(su)度(du)迅速(su)降(jiang)低,其中(zhong)有些較(jiao)重的(de)(de)(de)塵粒便失去(qu)速(su)度(du)而(er)沉降(jiang)下來(lai)。進(jin)人電(dian)(dian)(dian)場(chang)的(de)(de)(de)含塵氣(qi)(qi)體(ti)由于電(dian)(dian)(dian)暈(yun)極(ji)(ji)(ji)通人高壓直流(liu)電(dian)(dian)(dian),則(ze)在(zai)電(dian)(dian)(dian)暈(yun)極(ji)(ji)(ji)附近產生電(dian)(dian)(dian)暈(yun)現(xian)象,使氣(qi)(qi)體(ti)電(dian)(dian)(dian)離,電(dian)(dian)(dian)離后的(de)(de)(de)氣(qi)(qi)體(ti)中(zhong)存(cun)在(zai)大量的(de)(de)(de)電(dian)(dian)(dian)子(zi)(zi)和離子(zi)(zi),這些電(dian)(dian)(dian)子(zi)(zi)和離子(zi)(zi)與進(jin)人電(dian)(dian)(dian)場(chang)的(de)(de)(de)粉(fen)(fen)塵結合起來(lai),使塵粒帶電(dian)(dian)(dian),帶電(dian)(dian)(dian)塵粒在(zai)電(dian)(dian)(dian)場(chang)力的(de)(de)(de)作(zuo)用(yong)下趨向本設備陽極(ji)(ji)(ji)(正極(ji)(ji)(ji)、本設備采用(yong)負高壓制)和陰(yin)(yin)極(ji)(ji)(ji)(負極(ji)(ji)(ji)) , 釋放(fang)出(chu)電(dian)(dian)(dian)子(zi)(zi)分(fen)別沉積在(zai)相應的(de)(de)(de)電(dian)(dian)(dian)極(ji)(ji)(ji)上(shang),通過設備陰(yin)(yin)陽極(ji)(ji)(ji)振打系(xi)統(tong)(tong)的(de)(de)(de)振打,使沉積在(zai)陰(yin)(yin)陽電(dian)(dian)(dian)極(ji)(ji)(ji)上(shang)的(de)(de)(de)粉(fen)(fen)塵振落(luo),進(jin)人集灰斗(dou) 通過排灰裝(zhuang)置(zhi)放(fang)出(chu),回收(shou)有物料,被)凈化的(de)(de)(de)氣(qi)(qi)體(ti)排入大氣(qi)(qi)。
工作原理
靜電(dian)除(chu)塵(chen)(chen)器的(de)工作原理是利用高壓電(dian)場(chang)使煙(yan)氣(qi)發生電(dian)離,氣(qi)流(liu)(liu)中(zhong)的(de)粉塵(chen)(chen)荷電(dian)在(zai)電(dian)場(chang)作用下(xia)與氣(qi)流(liu)(liu)分離。負(fu)極(ji)(ji)由(you)不同斷(duan)面形(xing)狀(zhuang)的(de)金(jin)屬導線制成(cheng),叫(jiao)(jiao)放(fang)電(dian)電(dian)極(ji)(ji)。正極(ji)(ji)由(you)不同幾何形(xing)狀(zhuang)的(de)金(jin)屬板制成(cheng),叫(jiao)(jiao)集塵(chen)(chen)電(dian)極(ji)(ji)。靜電(dian)除(chu)塵(chen)(chen)器的(de)性能受粉塵(chen)(chen)性質、設備構造(zao)和煙(yan)氣(qi)流(liu)(liu)速等三個因素的(de)影響(xiang)。粉塵(chen)(chen)的(de)比(bi)電(dian)阻(zu)是評價導電(dian)性的(de)指標,它對(dui)除(chu)塵(chen)(chen)效率有直(zhi)接的(de)影響(xiang)。比(bi)電(dian)阻(zu)過低,塵(chen)(chen)粒難以保持在(zai)集塵(chen)(chen)電(dian)極(ji)(ji)上,致使其重返氣(qi)流(liu)(liu)。比(bi)電(dian)阻(zu)過高,到(dao)達集塵(chen)(chen)電(dian)極(ji)(ji)的(de)塵(chen)(chen)粒電(dian)荷不易放(fang)出,在(zai)塵(chen)(chen)層之間(jian)形(xing)成(cheng)電(dian)壓梯度(du)會產生局(ju)部擊(ji)穿和放(fang)電(dian)現象(xiang)。這(zhe)些情(qing)況都會造(zao)成(cheng)除(chu)塵(chen)(chen)效率下(xia)降。
電(dian)(dian)除塵(chen)器的(de)基(ji)本原(yuan)理是利用電(dian)(dian)力捕集煙氣(qi)中的(de)粉(fen)塵(chen),主要包括以下四個相(xiang)互有關(guan)的(de)物理過(guo)程: (1) 氣(qi)體(ti)的(de)電(dian)(dian)離。(2) 粉(fen)塵(chen)的(de)荷(he)電(dian)(dian)。(3) 荷(he)電(dian)(dian)粉(fen)塵(chen)向電(dian)(dian)極(ji)移動(dong)。(4) 荷(he)電(dian)(dian)粉(fen)塵(chen)的(de)捕集。