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(jing)電(dian)(dian)(dian)除塵(chen)器是以(yi)(yi)靜(jing)電(dian)(dian)(dian)凈化(hua)法來(lai)(lai)收捕(bu)廢氣(qi)(qi)(qi)中的(de)(de)粉塵(chen),它的(de)(de)凈化(hua)工(gong)作(zuo)上要是依靠電(dian)(dian)(dian)暈(yun)極(ji)(ji)(ji)(ji)和沉(chen)(chen)淀兩個系(xi)(xi)統來(lai)(lai)完成的(de)(de),當含(han)(han)塵(chen)氣(qi)(qi)(qi)體(ti)(ti)進(jin)人(ren)氣(qi)(qi)(qi)刺叭時,含(han)(han)塵(chen)氣(qi)(qi)(qi)體(ti)(ti)受到(dao)氣(qi)(qi)(qi)流(liu)分布板以(yi)(yi)及折流(liu)板的(de)(de)調(diao)整(zheng)后,使氣(qi)(qi)(qi)流(liu)能較均勻地進(jin)人(ren)電(dian)(dian)(dian)場。在(zai)橫(heng)斷面擴大的(de)(de)作(zuo)用(yong)下,氣(qi)(qi)(qi)流(liu)速度(du)(du)迅(xun)速降低,其(qi)中有(you)些較重的(de)(de)塵(chen)粒(li)便失去速度(du)(du)而沉(chen)(chen)降下來(lai)(lai)。進(jin)人(ren)電(dian)(dian)(dian)場的(de)(de)含(han)(han)塵(chen)氣(qi)(qi)(qi)體(ti)(ti)由于電(dian)(dian)(dian)暈(yun)極(ji)(ji)(ji)(ji)通人(ren)高(gao)壓直流(liu)電(dian)(dian)(dian),則在(zai)電(dian)(dian)(dian)暈(yun)極(ji)(ji)(ji)(ji)附(fu)近產生(sheng)電(dian)(dian)(dian)暈(yun)現象(xiang),使氣(qi)(qi)(qi)體(ti)(ti)電(dian)(dian)(dian)離(li),電(dian)(dian)(dian)離(li)后的(de)(de)氣(qi)(qi)(qi)體(ti)(ti)中存在(zai)大量(liang)的(de)(de)電(dian)(dian)(dian)子(zi)(zi)(zi)和離(li)子(zi)(zi)(zi),這些電(dian)(dian)(dian)子(zi)(zi)(zi)和離(li)子(zi)(zi)(zi)與進(jin)人(ren)電(dian)(dian)(dian)場的(de)(de)粉塵(chen)結合起來(lai)(lai),使塵(chen)粒(li)帶電(dian)(dian)(dian),帶電(dian)(dian)(dian)塵(chen)粒(li)在(zai)電(dian)(dian)(dian)場力的(de)(de)作(zuo)用(yong)下趨向本(ben)設備(bei)(bei)陽(yang)(yang)極(ji)(ji)(ji)(ji)(正極(ji)(ji)(ji)(ji)、本(ben)設備(bei)(bei)采用(yong)負高(gao)壓制(zhi))和陰極(ji)(ji)(ji)(ji)(負極(ji)(ji)(ji)(ji)) , 釋放出電(dian)(dian)(dian)子(zi)(zi)(zi)分別沉(chen)(chen)積(ji)在(zai)相應的(de)(de)電(dian)(dian)(dian)極(ji)(ji)(ji)(ji)上,通過設備(bei)(bei)陰陽(yang)(yang)極(ji)(ji)(ji)(ji)振打系(xi)(xi)統的(de)(de)振打,使沉(chen)(chen)積(ji)在(zai)陰陽(yang)(yang)電(dian)(dian)(dian)極(ji)(ji)(ji)(ji)上的(de)(de)粉塵(chen)振落(luo),進(jin)人(ren)集(ji)灰(hui)斗 通過排(pai)(pai)灰(hui)裝置放出,回收有(you)物(wu)料,被)凈化(hua)的(de)(de)氣(qi)(qi)(qi)體(ti)(ti)排(pai)(pai)入(ru)大氣(qi)(qi)(qi)。
工作原(yuan)理
靜(jing)電(dian)(dian)(dian)除塵(chen)(chen)(chen)(chen)(chen)器的(de)(de)(de)(de)工(gong)作原理是利(li)用高壓電(dian)(dian)(dian)場使(shi)煙(yan)氣(qi)發生(sheng)電(dian)(dian)(dian)離(li),氣(qi)流(liu)中的(de)(de)(de)(de)粉塵(chen)(chen)(chen)(chen)(chen)荷(he)電(dian)(dian)(dian)在(zai)電(dian)(dian)(dian)場作用下與氣(qi)流(liu)分離(li)。負極由不(bu)同斷面形(xing)狀(zhuang)(zhuang)的(de)(de)(de)(de)金屬導線(xian)制(zhi)(zhi)成(cheng)(cheng)(cheng),叫放(fang)電(dian)(dian)(dian)電(dian)(dian)(dian)極。正極由不(bu)同幾何(he)形(xing)狀(zhuang)(zhuang)的(de)(de)(de)(de)金屬板制(zhi)(zhi)成(cheng)(cheng)(cheng),叫集塵(chen)(chen)(chen)(chen)(chen)電(dian)(dian)(dian)極。靜(jing)電(dian)(dian)(dian)除塵(chen)(chen)(chen)(chen)(chen)器的(de)(de)(de)(de)性能受粉塵(chen)(chen)(chen)(chen)(chen)性質、設(she)備構造(zao)和(he)煙(yan)氣(qi)流(liu)速等三個(ge)因素(su)的(de)(de)(de)(de)影響。粉塵(chen)(chen)(chen)(chen)(chen)的(de)(de)(de)(de)比電(dian)(dian)(dian)阻(zu)是評價導電(dian)(dian)(dian)性的(de)(de)(de)(de)指標(biao),它對除塵(chen)(chen)(chen)(chen)(chen)效率(lv)有直接的(de)(de)(de)(de)影響。比電(dian)(dian)(dian)阻(zu)過(guo)低,塵(chen)(chen)(chen)(chen)(chen)粒(li)難以保(bao)持在(zai)集塵(chen)(chen)(chen)(chen)(chen)電(dian)(dian)(dian)極上(shang),致使(shi)其重(zhong)返氣(qi)流(liu)。比電(dian)(dian)(dian)阻(zu)過(guo)高,到達集塵(chen)(chen)(chen)(chen)(chen)電(dian)(dian)(dian)極的(de)(de)(de)(de)塵(chen)(chen)(chen)(chen)(chen)粒(li)電(dian)(dian)(dian)荷(he)不(bu)易放(fang)出,在(zai)塵(chen)(chen)(chen)(chen)(chen)層之間形(xing)成(cheng)(cheng)(cheng)電(dian)(dian)(dian)壓梯(ti)度(du)會(hui)產(chan)生(sheng)局部擊穿和(he)放(fang)電(dian)(dian)(dian)現(xian)象。這些情況都(dou)會(hui)造(zao)成(cheng)(cheng)(cheng)除塵(chen)(chen)(chen)(chen)(chen)效率(lv)下降。
電(dian)除塵(chen)(chen)器的(de)(de)基本原(yuan)理(li)是利(li)用電(dian)力捕集煙(yan)氣(qi)中的(de)(de)粉(fen)塵(chen)(chen),主要(yao)包括(kuo)以下四個相(xiang)互有關(guan)的(de)(de)物理(li)過(guo)程: (1) 氣(qi)體的(de)(de)電(dian)離。(2) 粉(fen)塵(chen)(chen)的(de)(de)荷(he)電(dian)。(3) 荷(he)電(dian)粉(fen)塵(chen)(chen)向電(dian)極(ji)移動。(4) 荷(he)電(dian)粉(fen)塵(chen)(chen)的(de)(de)捕集。