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(shi)靜電(dian)(dian)(dian)(dian)(dian)除塵(chen)(chen)器是以靜電(dian)(dian)(dian)(dian)(dian)凈化(hua)法來(lai)收(shou)捕廢氣(qi)(qi)中的(de)(de)(de)粉塵(chen)(chen),它的(de)(de)(de)凈化(hua)工作(zuo)上(shang)(shang)要是依靠電(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)極(ji)(ji)(ji)和(he)沉淀(dian)兩個系統來(lai)完成的(de)(de)(de),當含塵(chen)(chen)氣(qi)(qi)體(ti)(ti)進(jin)(jin)(jin)人(ren)氣(qi)(qi)刺叭時,含塵(chen)(chen)氣(qi)(qi)體(ti)(ti)受到氣(qi)(qi)流分布板(ban)以及(ji)折流板(ban)的(de)(de)(de)調整后,使氣(qi)(qi)流能較(jiao)均勻地進(jin)(jin)(jin)人(ren)電(dian)(dian)(dian)(dian)(dian)場。在(zai)(zai)橫斷面擴大(da)的(de)(de)(de)作(zuo)用下(xia),氣(qi)(qi)流速(su)(su)度(du)迅速(su)(su)降低,其中有(you)些(xie)較(jiao)重(zhong)的(de)(de)(de)塵(chen)(chen)粒便失去速(su)(su)度(du)而沉降下(xia)來(lai)。進(jin)(jin)(jin)人(ren)電(dian)(dian)(dian)(dian)(dian)場的(de)(de)(de)含塵(chen)(chen)氣(qi)(qi)體(ti)(ti)由(you)于電(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)極(ji)(ji)(ji)通人(ren)高(gao)壓直流電(dian)(dian)(dian)(dian)(dian),則在(zai)(zai)電(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)極(ji)(ji)(ji)附(fu)近產生電(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)現象,使氣(qi)(qi)體(ti)(ti)電(dian)(dian)(dian)(dian)(dian)離,電(dian)(dian)(dian)(dian)(dian)離后的(de)(de)(de)氣(qi)(qi)體(ti)(ti)中存在(zai)(zai)大(da)量的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)子(zi)(zi)和(he)離子(zi)(zi),這些(xie)電(dian)(dian)(dian)(dian)(dian)子(zi)(zi)和(he)離子(zi)(zi)與進(jin)(jin)(jin)人(ren)電(dian)(dian)(dian)(dian)(dian)場的(de)(de)(de)粉塵(chen)(chen)結合起來(lai),使塵(chen)(chen)粒帶電(dian)(dian)(dian)(dian)(dian),帶電(dian)(dian)(dian)(dian)(dian)塵(chen)(chen)粒在(zai)(zai)電(dian)(dian)(dian)(dian)(dian)場力的(de)(de)(de)作(zuo)用下(xia)趨向本(ben)設備陽極(ji)(ji)(ji)(正極(ji)(ji)(ji)、本(ben)設備采用負高(gao)壓制)和(he)陰極(ji)(ji)(ji)(負極(ji)(ji)(ji)) , 釋放出(chu)電(dian)(dian)(dian)(dian)(dian)子(zi)(zi)分別沉積(ji)在(zai)(zai)相(xiang)應的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)上(shang)(shang),通過(guo)設備陰陽極(ji)(ji)(ji)振(zhen)打系統的(de)(de)(de)振(zhen)打,使沉積(ji)在(zai)(zai)陰陽電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)上(shang)(shang)的(de)(de)(de)粉塵(chen)(chen)振(zhen)落,進(jin)(jin)(jin)人(ren)集(ji)灰(hui)斗 通過(guo)排(pai)灰(hui)裝置放出(chu),回收(shou)有(you)物料,被)凈化(hua)的(de)(de)(de)氣(qi)(qi)體(ti)(ti)排(pai)入大(da)氣(qi)(qi)。
工(gong)作原理
靜電(dian)(dian)(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)(chen)器的(de)工作原理是利用(yong)高壓電(dian)(dian)(dian)(dian)(dian)場(chang)使(shi)(shi)煙氣(qi)發生電(dian)(dian)(dian)(dian)(dian)離(li),氣(qi)流中(zhong)的(de)粉(fen)塵(chen)(chen)(chen)(chen)荷(he)電(dian)(dian)(dian)(dian)(dian)在電(dian)(dian)(dian)(dian)(dian)場(chang)作用(yong)下與氣(qi)流分離(li)。負極(ji)由(you)不(bu)同(tong)斷面形(xing)(xing)狀的(de)金屬(shu)(shu)導線制(zhi)成,叫放電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)極(ji)。正(zheng)極(ji)由(you)不(bu)同(tong)幾何形(xing)(xing)狀的(de)金屬(shu)(shu)板制(zhi)成,叫集塵(chen)(chen)(chen)(chen)電(dian)(dian)(dian)(dian)(dian)極(ji)。靜電(dian)(dian)(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)(chen)器的(de)性(xing)(xing)能受粉(fen)塵(chen)(chen)(chen)(chen)性(xing)(xing)質、設備構造和(he)煙氣(qi)流速(su)等三個因素(su)的(de)影(ying)(ying)響。粉(fen)塵(chen)(chen)(chen)(chen)的(de)比電(dian)(dian)(dian)(dian)(dian)阻是評(ping)價導電(dian)(dian)(dian)(dian)(dian)性(xing)(xing)的(de)指標,它對除(chu)塵(chen)(chen)(chen)(chen)效率有(you)直接的(de)影(ying)(ying)響。比電(dian)(dian)(dian)(dian)(dian)阻過(guo)低,塵(chen)(chen)(chen)(chen)粒難(nan)以保持在集塵(chen)(chen)(chen)(chen)電(dian)(dian)(dian)(dian)(dian)極(ji)上,致(zhi)使(shi)(shi)其重返氣(qi)流。比電(dian)(dian)(dian)(dian)(dian)阻過(guo)高,到(dao)達集塵(chen)(chen)(chen)(chen)電(dian)(dian)(dian)(dian)(dian)極(ji)的(de)塵(chen)(chen)(chen)(chen)粒電(dian)(dian)(dian)(dian)(dian)荷(he)不(bu)易放出,在塵(chen)(chen)(chen)(chen)層(ceng)之間形(xing)(xing)成電(dian)(dian)(dian)(dian)(dian)壓梯(ti)度會產生局部擊穿和(he)放電(dian)(dian)(dian)(dian)(dian)現象。這些情況都(dou)會造成除(chu)塵(chen)(chen)(chen)(chen)效率下降。
電除(chu)塵(chen)器(qi)的(de)(de)基本原理(li)(li)是利用(yong)電力捕(bu)(bu)集煙氣中的(de)(de)粉(fen)(fen)塵(chen),主要包(bao)括以下四(si)個相(xiang)互有關的(de)(de)物理(li)(li)過程: (1) 氣體的(de)(de)電離。(2) 粉(fen)(fen)塵(chen)的(de)(de)荷(he)電。(3) 荷(he)電粉(fen)(fen)塵(chen)向電極移動(dong)。(4) 荷(he)電粉(fen)(fen)塵(chen)的(de)(de)捕(bu)(bu)集。