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(chu)塵器(qi)是(shi)以靜(jing)電(dian)(dian)(dian)凈化(hua)法來(lai)收(shou)捕廢氣(qi)(qi)(qi)(qi)中(zhong)的(de)(de)(de)粉塵,它的(de)(de)(de)凈化(hua)工(gong)作(zuo)上要(yao)是(shi)依靠電(dian)(dian)(dian)暈極(ji)(ji)和(he)沉(chen)淀兩個系統(tong)來(lai)完(wan)成的(de)(de)(de),當含塵氣(qi)(qi)(qi)(qi)體(ti)進(jin)人氣(qi)(qi)(qi)(qi)刺叭(ba)時(shi),含塵氣(qi)(qi)(qi)(qi)體(ti)受到氣(qi)(qi)(qi)(qi)流(liu)分(fen)布板以及(ji)折(zhe)流(liu)板的(de)(de)(de)調(diao)整后,使(shi)氣(qi)(qi)(qi)(qi)流(liu)能(neng)較(jiao)均(jun)勻地(di)進(jin)人電(dian)(dian)(dian)場(chang)。在(zai)(zai)橫斷(duan)面擴大的(de)(de)(de)作(zuo)用(yong)(yong)下(xia),氣(qi)(qi)(qi)(qi)流(liu)速(su)度(du)迅速(su)降低,其中(zhong)有(you)些(xie)較(jiao)重的(de)(de)(de)塵粒便(bian)失去速(su)度(du)而(er)沉(chen)降下(xia)來(lai)。進(jin)人電(dian)(dian)(dian)場(chang)的(de)(de)(de)含塵氣(qi)(qi)(qi)(qi)體(ti)由于電(dian)(dian)(dian)暈極(ji)(ji)通(tong)人高壓(ya)直流(liu)電(dian)(dian)(dian),則在(zai)(zai)電(dian)(dian)(dian)暈極(ji)(ji)附(fu)近產生電(dian)(dian)(dian)暈現象(xiang),使(shi)氣(qi)(qi)(qi)(qi)體(ti)電(dian)(dian)(dian)離(li),電(dian)(dian)(dian)離(li)后的(de)(de)(de)氣(qi)(qi)(qi)(qi)體(ti)中(zhong)存在(zai)(zai)大量的(de)(de)(de)電(dian)(dian)(dian)子(zi)和(he)離(li)子(zi),這些(xie)電(dian)(dian)(dian)子(zi)和(he)離(li)子(zi)與進(jin)人電(dian)(dian)(dian)場(chang)的(de)(de)(de)粉塵結合起來(lai),使(shi)塵粒帶電(dian)(dian)(dian),帶電(dian)(dian)(dian)塵粒在(zai)(zai)電(dian)(dian)(dian)場(chang)力的(de)(de)(de)作(zuo)用(yong)(yong)下(xia)趨(qu)向本設備(bei)陽(yang)極(ji)(ji)(正極(ji)(ji)、本設備(bei)采用(yong)(yong)負高壓(ya)制(zhi))和(he)陰(yin)極(ji)(ji)(負極(ji)(ji)) , 釋放出電(dian)(dian)(dian)子(zi)分(fen)別(bie)沉(chen)積(ji)在(zai)(zai)相應的(de)(de)(de)電(dian)(dian)(dian)極(ji)(ji)上,通(tong)過設備(bei)陰(yin)陽(yang)極(ji)(ji)振打系統(tong)的(de)(de)(de)振打,使(shi)沉(chen)積(ji)在(zai)(zai)陰(yin)陽(yang)電(dian)(dian)(dian)極(ji)(ji)上的(de)(de)(de)粉塵振落(luo),進(jin)人集灰斗 通(tong)過排灰裝(zhuang)置(zhi)放出,回(hui)收(shou)有(you)物(wu)料,被)凈化(hua)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)除塵(chen)(chen)(chen)(chen)器(qi)(qi)的(de)(de)(de)工作原理是利用(yong)高壓電(dian)(dian)(dian)(dian)場使煙(yan)氣(qi)(qi)(qi)發生電(dian)(dian)(dian)(dian)離,氣(qi)(qi)(qi)流中(zhong)的(de)(de)(de)粉塵(chen)(chen)(chen)(chen)荷電(dian)(dian)(dian)(dian)在(zai)電(dian)(dian)(dian)(dian)場作用(yong)下與氣(qi)(qi)(qi)流分離。負極(ji)由不同斷(duan)面形(xing)狀的(de)(de)(de)金屬(shu)導線制成,叫放電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)極(ji)。正極(ji)由不同幾(ji)何(he)形(xing)狀的(de)(de)(de)金屬(shu)板制成,叫集(ji)塵(chen)(chen)(chen)(chen)電(dian)(dian)(dian)(dian)極(ji)。靜電(dian)(dian)(dian)(dian)除塵(chen)(chen)(chen)(chen)器(qi)(qi)的(de)(de)(de)性(xing)能受粉塵(chen)(chen)(chen)(chen)性(xing)質、設備構(gou)造(zao)和(he)煙(yan)氣(qi)(qi)(qi)流速(su)等三個因素(su)的(de)(de)(de)影響(xiang)。粉塵(chen)(chen)(chen)(chen)的(de)(de)(de)比電(dian)(dian)(dian)(dian)阻是評價(jia)導電(dian)(dian)(dian)(dian)性(xing)的(de)(de)(de)指標,它對除塵(chen)(chen)(chen)(chen)效率(lv)有直接(jie)的(de)(de)(de)影響(xiang)。比電(dian)(dian)(dian)(dian)阻過低,塵(chen)(chen)(chen)(chen)粒難(nan)以保持(chi)在(zai)集(ji)塵(chen)(chen)(chen)(chen)電(dian)(dian)(dian)(dian)極(ji)上,致使其(qi)重(zhong)返氣(qi)(qi)(qi)流。比電(dian)(dian)(dian)(dian)阻過高,到達(da)集(ji)塵(chen)(chen)(chen)(chen)電(dian)(dian)(dian)(dian)極(ji)的(de)(de)(de)塵(chen)(chen)(chen)(chen)粒電(dian)(dian)(dian)(dian)荷不易放出,在(zai)塵(chen)(chen)(chen)(chen)層之間形(xing)成電(dian)(dian)(dian)(dian)壓梯度會(hui)產生局部擊(ji)穿和(he)放電(dian)(dian)(dian)(dian)現(xian)象。這些(xie)情況都會(hui)造(zao)成除塵(chen)(chen)(chen)(chen)效率(lv)下降。
電(dian)除塵(chen)(chen)器的(de)基本(ben)原理是(shi)利用電(dian)力捕集(ji)煙氣中的(de)粉塵(chen)(chen),主(zhu)要(yao)包(bao)括(kuo)以下四個(ge)相互有關的(de)物理過程: (1) 氣體的(de)電(dian)離(li)。(2) 粉塵(chen)(chen)的(de)荷(he)電(dian)。(3) 荷(he)電(dian)粉塵(chen)(chen)向電(dian)極(ji)移動。(4) 荷(he)電(dian)粉塵(chen)(chen)的(de)捕集(ji)。