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)(dian)(dian)除塵器是以(yi)靜電(dian)(dian)(dian)(dian)凈(jing)(jing)(jing)化(hua)法來(lai)收捕廢氣(qi)(qi)(qi)(qi)中(zhong)的(de)(de)(de)(de)(de)粉塵,它的(de)(de)(de)(de)(de)凈(jing)(jing)(jing)化(hua)工作(zuo)上(shang)要是依靠電(dian)(dian)(dian)(dian)暈(yun)極(ji)(ji)(ji)(ji)和沉(chen)(chen)淀兩(liang)個系統來(lai)完成的(de)(de)(de)(de)(de),當含(han)(han)塵氣(qi)(qi)(qi)(qi)體(ti)(ti)進(jin)人(ren)(ren)氣(qi)(qi)(qi)(qi)刺(ci)叭時,含(han)(han)塵氣(qi)(qi)(qi)(qi)體(ti)(ti)受到氣(qi)(qi)(qi)(qi)流分布板以(yi)及折(zhe)流板的(de)(de)(de)(de)(de)調(diao)整(zheng)后,使(shi)氣(qi)(qi)(qi)(qi)流能較均勻地進(jin)人(ren)(ren)電(dian)(dian)(dian)(dian)場(chang)。在(zai)(zai)橫斷面擴大的(de)(de)(de)(de)(de)作(zuo)用(yong)下(xia),氣(qi)(qi)(qi)(qi)流速(su)(su)度迅速(su)(su)降(jiang)低,其中(zhong)有些(xie)較重的(de)(de)(de)(de)(de)塵粒(li)便失去速(su)(su)度而沉(chen)(chen)降(jiang)下(xia)來(lai)。進(jin)人(ren)(ren)電(dian)(dian)(dian)(dian)場(chang)的(de)(de)(de)(de)(de)含(han)(han)塵氣(qi)(qi)(qi)(qi)體(ti)(ti)由于電(dian)(dian)(dian)(dian)暈(yun)極(ji)(ji)(ji)(ji)通(tong)人(ren)(ren)高(gao)壓直流電(dian)(dian)(dian)(dian),則在(zai)(zai)電(dian)(dian)(dian)(dian)暈(yun)極(ji)(ji)(ji)(ji)附近產生電(dian)(dian)(dian)(dian)暈(yun)現象,使(shi)氣(qi)(qi)(qi)(qi)體(ti)(ti)電(dian)(dian)(dian)(dian)離(li),電(dian)(dian)(dian)(dian)離(li)后的(de)(de)(de)(de)(de)氣(qi)(qi)(qi)(qi)體(ti)(ti)中(zhong)存在(zai)(zai)大量(liang)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)子(zi)(zi)和離(li)子(zi)(zi),這些(xie)電(dian)(dian)(dian)(dian)子(zi)(zi)和離(li)子(zi)(zi)與(yu)進(jin)人(ren)(ren)電(dian)(dian)(dian)(dian)場(chang)的(de)(de)(de)(de)(de)粉塵結合起來(lai),使(shi)塵粒(li)帶電(dian)(dian)(dian)(dian),帶電(dian)(dian)(dian)(dian)塵粒(li)在(zai)(zai)電(dian)(dian)(dian)(dian)場(chang)力的(de)(de)(de)(de)(de)作(zuo)用(yong)下(xia)趨向本設(she)備(bei)陽極(ji)(ji)(ji)(ji)(正極(ji)(ji)(ji)(ji)、本設(she)備(bei)采用(yong)負高(gao)壓制)和陰極(ji)(ji)(ji)(ji)(負極(ji)(ji)(ji)(ji)) , 釋(shi)放出電(dian)(dian)(dian)(dian)子(zi)(zi)分別沉(chen)(chen)積在(zai)(zai)相應(ying)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)極(ji)(ji)(ji)(ji)上(shang),通(tong)過(guo)設(she)備(bei)陰陽極(ji)(ji)(ji)(ji)振(zhen)打系統的(de)(de)(de)(de)(de)振(zhen)打,使(shi)沉(chen)(chen)積在(zai)(zai)陰陽電(dian)(dian)(dian)(dian)極(ji)(ji)(ji)(ji)上(shang)的(de)(de)(de)(de)(de)粉塵振(zhen)落(luo),進(jin)人(ren)(ren)集灰斗(dou) 通(tong)過(guo)排灰裝置放出,回收有物(wu)料,被)凈(jing)(jing)(jing)化(hua)的(de)(de)(de)(de)(de)氣(qi)(qi)(qi)(qi)體(ti)(ti)排入大氣(qi)(qi)(qi)(qi)。
工作原理
靜(jing)電(dian)(dian)(dian)(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)(chen)(chen)(chen)器的(de)工作原理是利用(yong)高(gao)壓(ya)電(dian)(dian)(dian)(dian)(dian)(dian)場使煙(yan)氣(qi)(qi)發生電(dian)(dian)(dian)(dian)(dian)(dian)離(li),氣(qi)(qi)流(liu)(liu)中的(de)粉(fen)塵(chen)(chen)(chen)(chen)(chen)(chen)荷(he)電(dian)(dian)(dian)(dian)(dian)(dian)在電(dian)(dian)(dian)(dian)(dian)(dian)場作用(yong)下(xia)與(yu)氣(qi)(qi)流(liu)(liu)分離(li)。負(fu)極(ji)由不同斷面形狀的(de)金屬(shu)導線制(zhi)成,叫放(fang)電(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)。正極(ji)由不同幾何形狀的(de)金屬(shu)板制(zhi)成,叫集(ji)(ji)塵(chen)(chen)(chen)(chen)(chen)(chen)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)。靜(jing)電(dian)(dian)(dian)(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)(chen)(chen)(chen)器的(de)性能受粉(fen)塵(chen)(chen)(chen)(chen)(chen)(chen)性質、設備構造(zao)和(he)煙(yan)氣(qi)(qi)流(liu)(liu)速(su)等(deng)三個因(yin)素的(de)影(ying)響(xiang)。粉(fen)塵(chen)(chen)(chen)(chen)(chen)(chen)的(de)比電(dian)(dian)(dian)(dian)(dian)(dian)阻是評價(jia)導電(dian)(dian)(dian)(dian)(dian)(dian)性的(de)指標,它對(dui)除(chu)塵(chen)(chen)(chen)(chen)(chen)(chen)效(xiao)率有直接的(de)影(ying)響(xiang)。比電(dian)(dian)(dian)(dian)(dian)(dian)阻過低,塵(chen)(chen)(chen)(chen)(chen)(chen)粒(li)難以保持在集(ji)(ji)塵(chen)(chen)(chen)(chen)(chen)(chen)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)上,致使其重返氣(qi)(qi)流(liu)(liu)。比電(dian)(dian)(dian)(dian)(dian)(dian)阻過高(gao),到達集(ji)(ji)塵(chen)(chen)(chen)(chen)(chen)(chen)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)的(de)塵(chen)(chen)(chen)(chen)(chen)(chen)粒(li)電(dian)(dian)(dian)(dian)(dian)(dian)荷(he)不易放(fang)出(chu),在塵(chen)(chen)(chen)(chen)(chen)(chen)層之(zhi)間(jian)形成電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)梯度會(hui)產(chan)生局部擊(ji)穿(chuan)和(he)放(fang)電(dian)(dian)(dian)(dian)(dian)(dian)現象。這些情況(kuang)都會(hui)造(zao)成除(chu)塵(chen)(chen)(chen)(chen)(chen)(chen)效(xiao)率下(xia)降。
電除塵器的基(ji)本原理(li)是利用電力捕集(ji)煙氣(qi)中的粉(fen)塵,主要包括以下四個(ge)相(xiang)互有關的物理(li)過程: (1) 氣(qi)體的電離(li)。(2) 粉(fen)塵的荷電。(3) 荷電粉(fen)塵向電極移(yi)動。(4) 荷電粉(fen)塵的捕集(ji)。