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)器是(shi)(shi)以(yi)靜電(dian)(dian)凈(jing)化(hua)法來(lai)(lai)(lai)收捕(bu)廢氣(qi)(qi)(qi)中的(de)粉(fen)塵(chen)(chen),它的(de)凈(jing)化(hua)工作上(shang)要(yao)是(shi)(shi)依靠電(dian)(dian)暈(yun)極(ji)(ji)(ji)(ji)和沉(chen)淀(dian)兩個系統(tong)來(lai)(lai)(lai)完(wan)成的(de),當(dang)含(han)塵(chen)(chen)氣(qi)(qi)(qi)體(ti)進(jin)人(ren)氣(qi)(qi)(qi)刺叭時,含(han)塵(chen)(chen)氣(qi)(qi)(qi)體(ti)受到氣(qi)(qi)(qi)流分布板以(yi)及折(zhe)流板的(de)調整后(hou),使氣(qi)(qi)(qi)流能(neng)較均勻地(di)進(jin)人(ren)電(dian)(dian)場。在(zai)(zai)橫(heng)斷面擴大(da)的(de)作用下,氣(qi)(qi)(qi)流速度迅速降低,其中有(you)些較重的(de)塵(chen)(chen)粒(li)便失去(qu)速度而沉(chen)降下來(lai)(lai)(lai)。進(jin)人(ren)電(dian)(dian)場的(de)含(han)塵(chen)(chen)氣(qi)(qi)(qi)體(ti)由于(yu)電(dian)(dian)暈(yun)極(ji)(ji)(ji)(ji)通人(ren)高(gao)壓直流電(dian)(dian),則在(zai)(zai)電(dian)(dian)暈(yun)極(ji)(ji)(ji)(ji)附(fu)近(jin)產生電(dian)(dian)暈(yun)現象(xiang),使氣(qi)(qi)(qi)體(ti)電(dian)(dian)離(li),電(dian)(dian)離(li)后(hou)的(de)氣(qi)(qi)(qi)體(ti)中存在(zai)(zai)大(da)量的(de)電(dian)(dian)子(zi)和離(li)子(zi),這些電(dian)(dian)子(zi)和離(li)子(zi)與進(jin)人(ren)電(dian)(dian)場的(de)粉(fen)塵(chen)(chen)結(jie)合(he)起來(lai)(lai)(lai),使塵(chen)(chen)粒(li)帶電(dian)(dian),帶電(dian)(dian)塵(chen)(chen)粒(li)在(zai)(zai)電(dian)(dian)場力的(de)作用下趨(qu)向本設備陽極(ji)(ji)(ji)(ji)(正極(ji)(ji)(ji)(ji)、本設備采用負高(gao)壓制)和陰極(ji)(ji)(ji)(ji)(負極(ji)(ji)(ji)(ji)) , 釋放(fang)出(chu)電(dian)(dian)子(zi)分別沉(chen)積在(zai)(zai)相應的(de)電(dian)(dian)極(ji)(ji)(ji)(ji)上(shang),通過設備陰陽極(ji)(ji)(ji)(ji)振(zhen)打系統(tong)的(de)振(zhen)打,使沉(chen)積在(zai)(zai)陰陽電(dian)(dian)極(ji)(ji)(ji)(ji)上(shang)的(de)粉(fen)塵(chen)(chen)振(zhen)落,進(jin)人(ren)集灰斗(dou) 通過排灰裝置放(fang)出(chu),回(hui)收有(you)物(wu)料(liao),被)凈(jing)化(hua)的(de)氣(qi)(qi)(qi)體(ti)排入大(da)氣(qi)(qi)(qi)。
工作原理(li)
靜(jing)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)除塵(chen)(chen)器的(de)(de)工作(zuo)原理是(shi)利用高(gao)壓電(dian)(dian)(dian)(dian)(dian)(dian)(dian)場(chang)使煙氣(qi)(qi)發生(sheng)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)離,氣(qi)(qi)流(liu)中的(de)(de)粉(fen)塵(chen)(chen)荷電(dian)(dian)(dian)(dian)(dian)(dian)(dian)在電(dian)(dian)(dian)(dian)(dian)(dian)(dian)場(chang)作(zuo)用下與(yu)氣(qi)(qi)流(liu)分離。負極(ji)由(you)不(bu)(bu)同斷面形狀的(de)(de)金(jin)(jin)屬導線(xian)制成,叫放電(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)。正極(ji)由(you)不(bu)(bu)同幾何形狀的(de)(de)金(jin)(jin)屬板制成,叫集塵(chen)(chen)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)。靜(jing)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)除塵(chen)(chen)器的(de)(de)性能受粉(fen)塵(chen)(chen)性質、設備構(gou)造(zao)和(he)煙氣(qi)(qi)流(liu)速等三個因素的(de)(de)影響(xiang)。粉(fen)塵(chen)(chen)的(de)(de)比電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)是(shi)評(ping)價導電(dian)(dian)(dian)(dian)(dian)(dian)(dian)性的(de)(de)指標,它對除塵(chen)(chen)效(xiao)率有直接(jie)的(de)(de)影響(xiang)。比電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)過(guo)(guo)低,塵(chen)(chen)粒難以保持在集塵(chen)(chen)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)上,致(zhi)使其重(zhong)返氣(qi)(qi)流(liu)。比電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)過(guo)(guo)高(gao),到達集塵(chen)(chen)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)的(de)(de)塵(chen)(chen)粒電(dian)(dian)(dian)(dian)(dian)(dian)(dian)荷不(bu)(bu)易(yi)放出(chu),在塵(chen)(chen)層之間形成電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓梯(ti)度會(hui)產生(sheng)局(ju)部擊穿(chuan)和(he)放電(dian)(dian)(dian)(dian)(dian)(dian)(dian)現(xian)象。這些情(qing)況都會(hui)造(zao)成除塵(chen)(chen)效(xiao)率下降。
電(dian)除塵(chen)器(qi)的(de)(de)基(ji)本原理(li)是利用電(dian)力捕(bu)集煙氣(qi)中(zhong)的(de)(de)粉(fen)塵(chen),主要包括以(yi)下(xia)四個相互有關的(de)(de)物(wu)理(li)過程: (1) 氣(qi)體(ti)的(de)(de)電(dian)離。(2) 粉(fen)塵(chen)的(de)(de)荷(he)電(dian)。(3) 荷(he)電(dian)粉(fen)塵(chen)向電(dian)極移動。(4) 荷(he)電(dian)粉(fen)塵(chen)的(de)(de)捕(bu)集。