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)(dian)除塵(chen)器是以靜電(dian)(dian)(dian)(dian)(dian)凈化法來收捕廢氣(qi)(qi)(qi)(qi)中(zhong)的(de)(de)(de)粉塵(chen),它的(de)(de)(de)凈化工作(zuo)(zuo)上(shang)要是依靠電(dian)(dian)(dian)(dian)(dian)暈極(ji)(ji)和(he)沉(chen)(chen)淀兩個系統(tong)來完成的(de)(de)(de),當含塵(chen)氣(qi)(qi)(qi)(qi)體(ti)進人氣(qi)(qi)(qi)(qi)刺叭時,含塵(chen)氣(qi)(qi)(qi)(qi)體(ti)受到氣(qi)(qi)(qi)(qi)流分布(bu)板以及折流板的(de)(de)(de)調整后,使(shi)氣(qi)(qi)(qi)(qi)流能(neng)較均勻地進人電(dian)(dian)(dian)(dian)(dian)場(chang)。在(zai)橫斷面擴大的(de)(de)(de)作(zuo)(zuo)用下(xia),氣(qi)(qi)(qi)(qi)流速度(du)迅速降(jiang)低,其中(zhong)有(you)些較重(zhong)的(de)(de)(de)塵(chen)粒(li)便失去速度(du)而沉(chen)(chen)降(jiang)下(xia)來。進人電(dian)(dian)(dian)(dian)(dian)場(chang)的(de)(de)(de)含塵(chen)氣(qi)(qi)(qi)(qi)體(ti)由(you)于電(dian)(dian)(dian)(dian)(dian)暈極(ji)(ji)通(tong)人高(gao)壓直流電(dian)(dian)(dian)(dian)(dian),則在(zai)電(dian)(dian)(dian)(dian)(dian)暈極(ji)(ji)附近產生(sheng)電(dian)(dian)(dian)(dian)(dian)暈現象,使(shi)氣(qi)(qi)(qi)(qi)體(ti)電(dian)(dian)(dian)(dian)(dian)離,電(dian)(dian)(dian)(dian)(dian)離后的(de)(de)(de)氣(qi)(qi)(qi)(qi)體(ti)中(zhong)存在(zai)大量的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)子(zi)(zi)(zi)和(he)離子(zi)(zi)(zi),這些電(dian)(dian)(dian)(dian)(dian)子(zi)(zi)(zi)和(he)離子(zi)(zi)(zi)與進人電(dian)(dian)(dian)(dian)(dian)場(chang)的(de)(de)(de)粉塵(chen)結合起(qi)來,使(shi)塵(chen)粒(li)帶(dai)電(dian)(dian)(dian)(dian)(dian),帶(dai)電(dian)(dian)(dian)(dian)(dian)塵(chen)粒(li)在(zai)電(dian)(dian)(dian)(dian)(dian)場(chang)力(li)的(de)(de)(de)作(zuo)(zuo)用下(xia)趨向本設備陽(yang)(yang)極(ji)(ji)(正極(ji)(ji)、本設備采用負(fu)高(gao)壓制)和(he)陰(yin)極(ji)(ji)(負(fu)極(ji)(ji)) , 釋放(fang)(fang)出電(dian)(dian)(dian)(dian)(dian)子(zi)(zi)(zi)分別沉(chen)(chen)積在(zai)相應(ying)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)上(shang),通(tong)過(guo)設備陰(yin)陽(yang)(yang)極(ji)(ji)振打系統(tong)的(de)(de)(de)振打,使(shi)沉(chen)(chen)積在(zai)陰(yin)陽(yang)(yang)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)上(shang)的(de)(de)(de)粉塵(chen)振落,進人集灰斗 通(tong)過(guo)排灰裝(zhuang)置放(fang)(fang)出,回(hui)收有(you)物料,被)凈化的(de)(de)(de)氣(qi)(qi)(qi)(qi)體(ti)排入大氣(qi)(qi)(qi)(qi)。
工作原理
靜電(dian)(dian)(dian)(dian)(dian)除塵(chen)器的工作原理是利用高壓電(dian)(dian)(dian)(dian)(dian)場使(shi)煙氣(qi)(qi)發生電(dian)(dian)(dian)(dian)(dian)離(li),氣(qi)(qi)流中的粉(fen)塵(chen)荷電(dian)(dian)(dian)(dian)(dian)在電(dian)(dian)(dian)(dian)(dian)場作用下與氣(qi)(qi)流分離(li)。負極(ji)(ji)由不(bu)同斷(duan)面形(xing)狀的金(jin)屬(shu)導線制(zhi)成(cheng)(cheng),叫(jiao)放電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)。正極(ji)(ji)由不(bu)同幾何形(xing)狀的金(jin)屬(shu)板制(zhi)成(cheng)(cheng),叫(jiao)集塵(chen)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)。靜電(dian)(dian)(dian)(dian)(dian)除塵(chen)器的性能受粉(fen)塵(chen)性質、設備構造(zao)和煙氣(qi)(qi)流速等(deng)三個因(yin)素的影(ying)響。粉(fen)塵(chen)的比電(dian)(dian)(dian)(dian)(dian)阻(zu)是評價導電(dian)(dian)(dian)(dian)(dian)性的指標,它對(dui)除塵(chen)效率有(you)直接的影(ying)響。比電(dian)(dian)(dian)(dian)(dian)阻(zu)過低,塵(chen)粒(li)難以保持在集塵(chen)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)上,致使(shi)其重返(fan)氣(qi)(qi)流。比電(dian)(dian)(dian)(dian)(dian)阻(zu)過高,到達(da)集塵(chen)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)的塵(chen)粒(li)電(dian)(dian)(dian)(dian)(dian)荷不(bu)易放出,在塵(chen)層之間形(xing)成(cheng)(cheng)電(dian)(dian)(dian)(dian)(dian)壓梯度會(hui)產生局部擊(ji)穿和放電(dian)(dian)(dian)(dian)(dian)現象。這些情況(kuang)都(dou)會(hui)造(zao)成(cheng)(cheng)除塵(chen)效率下降。
電(dian)(dian)除(chu)塵(chen)(chen)器的(de)基本原(yuan)理(li)是利用電(dian)(dian)力捕集(ji)煙(yan)氣(qi)中的(de)粉(fen)(fen)塵(chen)(chen),主要(yao)包(bao)括以下四個相(xiang)互有(you)關的(de)物(wu)理(li)過(guo)程: (1) 氣(qi)體的(de)電(dian)(dian)離。(2) 粉(fen)(fen)塵(chen)(chen)的(de)荷(he)電(dian)(dian)。(3) 荷(he)電(dian)(dian)粉(fen)(fen)塵(chen)(chen)向(xiang)電(dian)(dian)極移動。(4) 荷(he)電(dian)(dian)粉(fen)(fen)塵(chen)(chen)的(de)捕集(ji)。