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。
臥式靜電(dian)(dian)除(chu)塵(chen)器是以(yi)靜電(dian)(dian)凈化法來收(shou)捕廢氣(qi)(qi)中(zhong)的(de)(de)(de)粉塵(chen),它(ta)的(de)(de)(de)凈化工作(zuo)上(shang)要是依靠電(dian)(dian)暈極(ji)和沉淀兩個系統(tong)(tong)來完成的(de)(de)(de),當含(han)塵(chen)氣(qi)(qi)體(ti)(ti)(ti)(ti)進(jin)人(ren)氣(qi)(qi)刺(ci)叭時(shi),含(han)塵(chen)氣(qi)(qi)體(ti)(ti)(ti)(ti)受到(dao)氣(qi)(qi)流(liu)分布板(ban)以(yi)及折流(liu)板(ban)的(de)(de)(de)調整后(hou),使氣(qi)(qi)流(liu)能較均勻(yun)地進(jin)人(ren)電(dian)(dian)場(chang)。在橫(heng)斷(duan)面(mian)擴大(da)的(de)(de)(de)作(zuo)用(yong)下(xia),氣(qi)(qi)流(liu)速(su)(su)度(du)迅速(su)(su)降(jiang)(jiang)低,其中(zhong)有些(xie)較重的(de)(de)(de)塵(chen)粒(li)便失去速(su)(su)度(du)而沉降(jiang)(jiang)下(xia)來。進(jin)人(ren)電(dian)(dian)場(chang)的(de)(de)(de)含(han)塵(chen)氣(qi)(qi)體(ti)(ti)(ti)(ti)由于電(dian)(dian)暈極(ji)通(tong)人(ren)高(gao)壓直流(liu)電(dian)(dian),則在電(dian)(dian)暈極(ji)附近產(chan)生電(dian)(dian)暈現象,使氣(qi)(qi)體(ti)(ti)(ti)(ti)電(dian)(dian)離(li),電(dian)(dian)離(li)后(hou)的(de)(de)(de)氣(qi)(qi)體(ti)(ti)(ti)(ti)中(zhong)存在大(da)量的(de)(de)(de)電(dian)(dian)子(zi)(zi)和離(li)子(zi)(zi),這(zhe)些(xie)電(dian)(dian)子(zi)(zi)和離(li)子(zi)(zi)與進(jin)人(ren)電(dian)(dian)場(chang)的(de)(de)(de)粉塵(chen)結合起來,使塵(chen)粒(li)帶(dai)電(dian)(dian),帶(dai)電(dian)(dian)塵(chen)粒(li)在電(dian)(dian)場(chang)力的(de)(de)(de)作(zuo)用(yong)下(xia)趨(qu)向本設(she)備(bei)陽極(ji)(正極(ji)、本設(she)備(bei)采用(yong)負(fu)高(gao)壓制)和陰(yin)極(ji)(負(fu)極(ji)) , 釋放出電(dian)(dian)子(zi)(zi)分別(bie)沉積在相(xiang)應的(de)(de)(de)電(dian)(dian)極(ji)上(shang),通(tong)過(guo)設(she)備(bei)陰(yin)陽極(ji)振打系統(tong)(tong)的(de)(de)(de)振打,使沉積在陰(yin)陽電(dian)(dian)極(ji)上(shang)的(de)(de)(de)粉塵(chen)振落,進(jin)人(ren)集灰斗 通(tong)過(guo)排灰裝置放出,回收(shou)有物料,被)凈化的(de)(de)(de)氣(qi)(qi)體(ti)(ti)(ti)(ti)排入大(da)氣(qi)(qi)。
工作原理(li)
靜電(dian)(dian)除塵(chen)器(qi)的(de)(de)(de)(de)(de)工(gong)作(zuo)原(yuan)理(li)是利用高壓(ya)電(dian)(dian)場使(shi)煙氣(qi)(qi)發生(sheng)電(dian)(dian)離,氣(qi)(qi)流中的(de)(de)(de)(de)(de)粉(fen)(fen)塵(chen)荷電(dian)(dian)在電(dian)(dian)場作(zuo)用下(xia)與氣(qi)(qi)流分離。負極由不同(tong)斷面形狀的(de)(de)(de)(de)(de)金屬(shu)導(dao)(dao)線制成(cheng)(cheng)(cheng),叫放(fang)電(dian)(dian)電(dian)(dian)極。正極由不同(tong)幾何形狀的(de)(de)(de)(de)(de)金屬(shu)板制成(cheng)(cheng)(cheng),叫集塵(chen)電(dian)(dian)極。靜電(dian)(dian)除塵(chen)器(qi)的(de)(de)(de)(de)(de)性(xing)能受粉(fen)(fen)塵(chen)性(xing)質、設備(bei)構造(zao)和(he)煙氣(qi)(qi)流速等三個因(yin)素的(de)(de)(de)(de)(de)影(ying)響(xiang)。粉(fen)(fen)塵(chen)的(de)(de)(de)(de)(de)比電(dian)(dian)阻(zu)是評價導(dao)(dao)電(dian)(dian)性(xing)的(de)(de)(de)(de)(de)指標,它對除塵(chen)效(xiao)率有直(zhi)接的(de)(de)(de)(de)(de)影(ying)響(xiang)。比電(dian)(dian)阻(zu)過低,塵(chen)粒(li)難以保持在集塵(chen)電(dian)(dian)極上,致使(shi)其(qi)重(zhong)返氣(qi)(qi)流。比電(dian)(dian)阻(zu)過高,到達集塵(chen)電(dian)(dian)極的(de)(de)(de)(de)(de)塵(chen)粒(li)電(dian)(dian)荷不易放(fang)出,在塵(chen)層之間形成(cheng)(cheng)(cheng)電(dian)(dian)壓(ya)梯度(du)會產生(sheng)局部(bu)擊穿和(he)放(fang)電(dian)(dian)現象。這些情況都(dou)會造(zao)成(cheng)(cheng)(cheng)除塵(chen)效(xiao)率下(xia)降。
電(dian)除塵(chen)器的基本原(yuan)理是利用電(dian)力捕集煙(yan)氣(qi)中的粉(fen)塵(chen),主要(yao)包括以下四個(ge)相互有關的物理過程: (1) 氣(qi)體(ti)的電(dian)離(li)。(2) 粉(fen)塵(chen)的荷(he)(he)電(dian)。(3) 荷(he)(he)電(dian)粉(fen)塵(chen)向(xiang)電(dian)極移(yi)動。(4) 荷(he)(he)電(dian)粉(fen)塵(chen)的捕集。