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)電除塵(chen)(chen)器是以靜(jing)電凈化(hua)法來收捕廢氣(qi)(qi)(qi)(qi)中(zhong)的(de)(de)粉(fen)塵(chen)(chen),它的(de)(de)凈化(hua)工作(zuo)上要是依靠電暈極和沉(chen)淀兩個系統來完成的(de)(de),當含塵(chen)(chen)氣(qi)(qi)(qi)(qi)體進(jin)人氣(qi)(qi)(qi)(qi)刺叭時,含塵(chen)(chen)氣(qi)(qi)(qi)(qi)體受到氣(qi)(qi)(qi)(qi)流(liu)分布板(ban)以及折流(liu)板(ban)的(de)(de)調(diao)整(zheng)后(hou)(hou),使氣(qi)(qi)(qi)(qi)流(liu)能較均勻地進(jin)人電場。在(zai)(zai)橫斷(duan)面擴大(da)的(de)(de)作(zuo)用下(xia),氣(qi)(qi)(qi)(qi)流(liu)速度迅速降低,其(qi)中(zhong)有些較重的(de)(de)塵(chen)(chen)粒便(bian)失(shi)去速度而沉(chen)降下(xia)來。進(jin)人電場的(de)(de)含塵(chen)(chen)氣(qi)(qi)(qi)(qi)體由(you)于電暈極通(tong)人高壓直(zhi)流(liu)電,則在(zai)(zai)電暈極附近(jin)產生(sheng)電暈現象,使氣(qi)(qi)(qi)(qi)體電離(li),電離(li)后(hou)(hou)的(de)(de)氣(qi)(qi)(qi)(qi)體中(zhong)存在(zai)(zai)大(da)量(liang)的(de)(de)電子和離(li)子,這些電子和離(li)子與進(jin)人電場的(de)(de)粉(fen)塵(chen)(chen)結合起(qi)來,使塵(chen)(chen)粒帶(dai)電,帶(dai)電塵(chen)(chen)粒在(zai)(zai)電場力(li)的(de)(de)作(zuo)用下(xia)趨向本設備陽(yang)極(正極、本設備采用負(fu)高壓制)和陰(yin)極(負(fu)極) , 釋放出電子分別(bie)沉(chen)積(ji)在(zai)(zai)相(xiang)應的(de)(de)電極上,通(tong)過設備陰(yin)陽(yang)極振(zhen)(zhen)打系統的(de)(de)振(zhen)(zhen)打,使沉(chen)積(ji)在(zai)(zai)陰(yin)陽(yang)電極上的(de)(de)粉(fen)塵(chen)(chen)振(zhen)(zhen)落,進(jin)人集(ji)灰斗 通(tong)過排灰裝置放出,回收有物料,被)凈化(hua)的(de)(de)氣(qi)(qi)(qi)(qi)體排入大(da)氣(qi)(qi)(qi)(qi)。
工作原理
靜電(dian)(dian)(dian)(dian)除塵(chen)(chen)(chen)器的(de)工作(zuo)原理是利用高壓電(dian)(dian)(dian)(dian)場使煙氣(qi)發生電(dian)(dian)(dian)(dian)離,氣(qi)流中(zhong)的(de)粉塵(chen)(chen)(chen)荷(he)電(dian)(dian)(dian)(dian)在電(dian)(dian)(dian)(dian)場作(zuo)用下與氣(qi)流分離。負(fu)極(ji)由(you)不同斷面形狀的(de)金(jin)屬導(dao)線制成,叫放(fang)(fang)(fang)電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)極(ji)。正極(ji)由(you)不同幾何形狀的(de)金(jin)屬板制成,叫集(ji)塵(chen)(chen)(chen)電(dian)(dian)(dian)(dian)極(ji)。靜電(dian)(dian)(dian)(dian)除塵(chen)(chen)(chen)器的(de)性能(neng)受(shou)粉塵(chen)(chen)(chen)性質、設備構造和煙氣(qi)流速等三(san)個因素的(de)影(ying)響。粉塵(chen)(chen)(chen)的(de)比電(dian)(dian)(dian)(dian)阻(zu)是評價導(dao)電(dian)(dian)(dian)(dian)性的(de)指標,它對除塵(chen)(chen)(chen)效(xiao)率有直接的(de)影(ying)響。比電(dian)(dian)(dian)(dian)阻(zu)過(guo)低,塵(chen)(chen)(chen)粒(li)(li)難以保持在集(ji)塵(chen)(chen)(chen)電(dian)(dian)(dian)(dian)極(ji)上,致使其重(zhong)返氣(qi)流。比電(dian)(dian)(dian)(dian)阻(zu)過(guo)高,到達集(ji)塵(chen)(chen)(chen)電(dian)(dian)(dian)(dian)極(ji)的(de)塵(chen)(chen)(chen)粒(li)(li)電(dian)(dian)(dian)(dian)荷(he)不易放(fang)(fang)(fang)出,在塵(chen)(chen)(chen)層之間(jian)形成電(dian)(dian)(dian)(dian)壓梯度會產生局部擊(ji)穿和放(fang)(fang)(fang)電(dian)(dian)(dian)(dian)現象。這些情況都會造成除塵(chen)(chen)(chen)效(xiao)率下降。
電(dian)(dian)(dian)除塵(chen)(chen)器的基(ji)本原理是(shi)利用電(dian)(dian)(dian)力捕集煙(yan)氣中的粉(fen)塵(chen)(chen),主要包括(kuo)以下四個相(xiang)互(hu)有關(guan)的物(wu)理過(guo)程: (1) 氣體的電(dian)(dian)(dian)離。(2) 粉(fen)塵(chen)(chen)的荷電(dian)(dian)(dian)。(3) 荷電(dian)(dian)(dian)粉(fen)塵(chen)(chen)向(xiang)電(dian)(dian)(dian)極移動。(4) 荷電(dian)(dian)(dian)粉(fen)塵(chen)(chen)的捕集。