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)(dian)除塵(chen)(chen)器是(shi)以靜電(dian)(dian)(dian)(dian)(dian)(dian)凈(jing)化法(fa)來(lai)(lai)(lai)收(shou)捕廢氣(qi)(qi)(qi)(qi)中(zhong)的(de)(de)粉塵(chen)(chen),它的(de)(de)凈(jing)化工作上要是(shi)依靠電(dian)(dian)(dian)(dian)(dian)(dian)暈極(ji)和沉(chen)淀兩個系統來(lai)(lai)(lai)完成的(de)(de),當含塵(chen)(chen)氣(qi)(qi)(qi)(qi)體(ti)進(jin)(jin)(jin)人(ren)氣(qi)(qi)(qi)(qi)刺叭(ba)時(shi),含塵(chen)(chen)氣(qi)(qi)(qi)(qi)體(ti)受到氣(qi)(qi)(qi)(qi)流(liu)(liu)分(fen)布板以及(ji)折(zhe)流(liu)(liu)板的(de)(de)調整后(hou),使氣(qi)(qi)(qi)(qi)流(liu)(liu)能較均勻地進(jin)(jin)(jin)人(ren)電(dian)(dian)(dian)(dian)(dian)(dian)場(chang)。在(zai)(zai)(zai)橫斷(duan)面擴大的(de)(de)作用下,氣(qi)(qi)(qi)(qi)流(liu)(liu)速(su)度迅速(su)降低,其中(zhong)有(you)些較重(zhong)的(de)(de)塵(chen)(chen)粒(li)便失去速(su)度而(er)沉(chen)降下來(lai)(lai)(lai)。進(jin)(jin)(jin)人(ren)電(dian)(dian)(dian)(dian)(dian)(dian)場(chang)的(de)(de)含塵(chen)(chen)氣(qi)(qi)(qi)(qi)體(ti)由于電(dian)(dian)(dian)(dian)(dian)(dian)暈極(ji)通人(ren)高壓直流(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian),則在(zai)(zai)(zai)電(dian)(dian)(dian)(dian)(dian)(dian)暈極(ji)附近產生(sheng)電(dian)(dian)(dian)(dian)(dian)(dian)暈現象,使氣(qi)(qi)(qi)(qi)體(ti)電(dian)(dian)(dian)(dian)(dian)(dian)離,電(dian)(dian)(dian)(dian)(dian)(dian)離后(hou)的(de)(de)氣(qi)(qi)(qi)(qi)體(ti)中(zhong)存在(zai)(zai)(zai)大量的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)子(zi)和離子(zi),這(zhe)些電(dian)(dian)(dian)(dian)(dian)(dian)子(zi)和離子(zi)與進(jin)(jin)(jin)人(ren)電(dian)(dian)(dian)(dian)(dian)(dian)場(chang)的(de)(de)粉塵(chen)(chen)結合(he)起來(lai)(lai)(lai),使塵(chen)(chen)粒(li)帶(dai)(dai)電(dian)(dian)(dian)(dian)(dian)(dian),帶(dai)(dai)電(dian)(dian)(dian)(dian)(dian)(dian)塵(chen)(chen)粒(li)在(zai)(zai)(zai)電(dian)(dian)(dian)(dian)(dian)(dian)場(chang)力的(de)(de)作用下趨向本設(she)(she)備(bei)陽極(ji)(正極(ji)、本設(she)(she)備(bei)采(cai)用負(fu)高壓制(zhi))和陰(yin)極(ji)(負(fu)極(ji)) , 釋放(fang)(fang)出電(dian)(dian)(dian)(dian)(dian)(dian)子(zi)分(fen)別(bie)沉(chen)積(ji)在(zai)(zai)(zai)相應的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)上,通過(guo)設(she)(she)備(bei)陰(yin)陽極(ji)振(zhen)打系統的(de)(de)振(zhen)打,使沉(chen)積(ji)在(zai)(zai)(zai)陰(yin)陽電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)上的(de)(de)粉塵(chen)(chen)振(zhen)落,進(jin)(jin)(jin)人(ren)集(ji)灰(hui)斗(dou) 通過(guo)排灰(hui)裝置放(fang)(fang)出,回(hui)收(shou)有(you)物料,被(bei))凈(jing)化的(de)(de)氣(qi)(qi)(qi)(qi)體(ti)排入大氣(qi)(qi)(qi)(qi)。
工作原理
靜(jing)電(dian)(dian)(dian)除(chu)(chu)塵(chen)(chen)(chen)(chen)(chen)(chen)器的(de)(de)(de)(de)工作原(yuan)理是利用(yong)高(gao)壓電(dian)(dian)(dian)場使煙氣(qi)(qi)發生(sheng)電(dian)(dian)(dian)離(li),氣(qi)(qi)流(liu)(liu)中(zhong)的(de)(de)(de)(de)粉(fen)塵(chen)(chen)(chen)(chen)(chen)(chen)荷(he)電(dian)(dian)(dian)在電(dian)(dian)(dian)場作用(yong)下與氣(qi)(qi)流(liu)(liu)分離(li)。負(fu)極(ji)由不(bu)同斷面形(xing)狀(zhuang)的(de)(de)(de)(de)金屬導線制成,叫(jiao)放電(dian)(dian)(dian)電(dian)(dian)(dian)極(ji)。正(zheng)極(ji)由不(bu)同幾何(he)形(xing)狀(zhuang)的(de)(de)(de)(de)金屬板制成,叫(jiao)集(ji)塵(chen)(chen)(chen)(chen)(chen)(chen)電(dian)(dian)(dian)極(ji)。靜(jing)電(dian)(dian)(dian)除(chu)(chu)塵(chen)(chen)(chen)(chen)(chen)(chen)器的(de)(de)(de)(de)性(xing)能受粉(fen)塵(chen)(chen)(chen)(chen)(chen)(chen)性(xing)質、設備構造(zao)和(he)煙氣(qi)(qi)流(liu)(liu)速(su)等三(san)個(ge)因素的(de)(de)(de)(de)影響。粉(fen)塵(chen)(chen)(chen)(chen)(chen)(chen)的(de)(de)(de)(de)比(bi)電(dian)(dian)(dian)阻(zu)是評價導電(dian)(dian)(dian)性(xing)的(de)(de)(de)(de)指標,它對除(chu)(chu)塵(chen)(chen)(chen)(chen)(chen)(chen)效(xiao)率(lv)有直接的(de)(de)(de)(de)影響。比(bi)電(dian)(dian)(dian)阻(zu)過(guo)低,塵(chen)(chen)(chen)(chen)(chen)(chen)粒難(nan)以保(bao)持在集(ji)塵(chen)(chen)(chen)(chen)(chen)(chen)電(dian)(dian)(dian)極(ji)上(shang),致使其重返氣(qi)(qi)流(liu)(liu)。比(bi)電(dian)(dian)(dian)阻(zu)過(guo)高(gao),到(dao)達(da)集(ji)塵(chen)(chen)(chen)(chen)(chen)(chen)電(dian)(dian)(dian)極(ji)的(de)(de)(de)(de)塵(chen)(chen)(chen)(chen)(chen)(chen)粒電(dian)(dian)(dian)荷(he)不(bu)易放出,在塵(chen)(chen)(chen)(chen)(chen)(chen)層(ceng)之間(jian)形(xing)成電(dian)(dian)(dian)壓梯度會(hui)(hui)產生(sheng)局部擊(ji)穿和(he)放電(dian)(dian)(dian)現象。這些情況都會(hui)(hui)造(zao)成除(chu)(chu)塵(chen)(chen)(chen)(chen)(chen)(chen)效(xiao)率(lv)下降。
電(dian)除塵(chen)器的基(ji)本(ben)原(yuan)理(li)(li)是利用電(dian)力捕集煙(yan)氣中的粉塵(chen),主要(yao)包括以下四(si)個相互有(you)關的物理(li)(li)過程: (1) 氣體的電(dian)離。(2) 粉塵(chen)的荷(he)電(dian)。(3) 荷(he)電(dian)粉塵(chen)向電(dian)極移動(dong)。(4) 荷(he)電(dian)粉塵(chen)的捕集。