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(wo)式靜電(dian)(dian)(dian)(dian)(dian)除(chu)塵器是以靜電(dian)(dian)(dian)(dian)(dian)凈(jing)(jing)化法(fa)來收捕廢氣(qi)(qi)(qi)中的(de)(de)(de)粉塵,它的(de)(de)(de)凈(jing)(jing)化工作上要是依靠電(dian)(dian)(dian)(dian)(dian)暈極(ji)(ji)和沉(chen)淀(dian)兩(liang)個系統來完成(cheng)的(de)(de)(de),當含塵氣(qi)(qi)(qi)體(ti)(ti)(ti)(ti)進(jin)(jin)(jin)人(ren)氣(qi)(qi)(qi)刺叭時,含塵氣(qi)(qi)(qi)體(ti)(ti)(ti)(ti)受到氣(qi)(qi)(qi)流(liu)分(fen)布板以及折流(liu)板的(de)(de)(de)調整后,使(shi)(shi)氣(qi)(qi)(qi)流(liu)能(neng)較(jiao)均勻地進(jin)(jin)(jin)人(ren)電(dian)(dian)(dian)(dian)(dian)場。在(zai)(zai)橫斷面擴大的(de)(de)(de)作用(yong)下(xia),氣(qi)(qi)(qi)流(liu)速度迅(xun)速降低,其中有(you)些較(jiao)重的(de)(de)(de)塵粒便失去速度而沉(chen)降下(xia)來。進(jin)(jin)(jin)人(ren)電(dian)(dian)(dian)(dian)(dian)場的(de)(de)(de)含塵氣(qi)(qi)(qi)體(ti)(ti)(ti)(ti)由于電(dian)(dian)(dian)(dian)(dian)暈極(ji)(ji)通(tong)人(ren)高壓直(zhi)流(liu)電(dian)(dian)(dian)(dian)(dian),則在(zai)(zai)電(dian)(dian)(dian)(dian)(dian)暈極(ji)(ji)附(fu)近產生電(dian)(dian)(dian)(dian)(dian)暈現(xian)象,使(shi)(shi)氣(qi)(qi)(qi)體(ti)(ti)(ti)(ti)電(dian)(dian)(dian)(dian)(dian)離,電(dian)(dian)(dian)(dian)(dian)離后的(de)(de)(de)氣(qi)(qi)(qi)體(ti)(ti)(ti)(ti)中存在(zai)(zai)大量(liang)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)子(zi)(zi)和離子(zi)(zi),這些電(dian)(dian)(dian)(dian)(dian)子(zi)(zi)和離子(zi)(zi)與進(jin)(jin)(jin)人(ren)電(dian)(dian)(dian)(dian)(dian)場的(de)(de)(de)粉塵結合(he)起來,使(shi)(shi)塵粒帶電(dian)(dian)(dian)(dian)(dian),帶電(dian)(dian)(dian)(dian)(dian)塵粒在(zai)(zai)電(dian)(dian)(dian)(dian)(dian)場力的(de)(de)(de)作用(yong)下(xia)趨向本設(she)備(bei)陽極(ji)(ji)(正(zheng)極(ji)(ji)、本設(she)備(bei)采(cai)用(yong)負高壓制)和陰極(ji)(ji)(負極(ji)(ji)) , 釋(shi)放出電(dian)(dian)(dian)(dian)(dian)子(zi)(zi)分(fen)別沉(chen)積在(zai)(zai)相(xiang)應的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)上,通(tong)過設(she)備(bei)陰陽極(ji)(ji)振(zhen)打系統的(de)(de)(de)振(zhen)打,使(shi)(shi)沉(chen)積在(zai)(zai)陰陽電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)上的(de)(de)(de)粉塵振(zhen)落,進(jin)(jin)(jin)人(ren)集灰斗 通(tong)過排(pai)灰裝置放出,回收有(you)物料,被)凈(jing)(jing)化的(de)(de)(de)氣(qi)(qi)(qi)體(ti)(ti)(ti)(ti)排(pai)入大氣(qi)(qi)(qi)。
工作原理
靜電(dian)(dian)(dian)(dian)(dian)(dian)(dian)除(chu)(chu)塵(chen)(chen)(chen)器(qi)的工作原理是利用高壓電(dian)(dian)(dian)(dian)(dian)(dian)(dian)場(chang)使煙(yan)氣(qi)(qi)發生電(dian)(dian)(dian)(dian)(dian)(dian)(dian)離,氣(qi)(qi)流(liu)(liu)中的粉塵(chen)(chen)(chen)荷電(dian)(dian)(dian)(dian)(dian)(dian)(dian)在(zai)(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)場(chang)作用下(xia)與氣(qi)(qi)流(liu)(liu)分離。負極(ji)(ji)(ji)由不同斷(duan)面形狀的金屬(shu)(shu)導(dao)線(xian)制成,叫放電(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)。正極(ji)(ji)(ji)由不同幾何形狀的金屬(shu)(shu)板(ban)制成,叫集塵(chen)(chen)(chen)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)。靜電(dian)(dian)(dian)(dian)(dian)(dian)(dian)除(chu)(chu)塵(chen)(chen)(chen)器(qi)的性(xing)能(neng)受粉塵(chen)(chen)(chen)性(xing)質、設(she)備構(gou)造和煙(yan)氣(qi)(qi)流(liu)(liu)速等三個(ge)因素的影響。粉塵(chen)(chen)(chen)的比(bi)(bi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)是評(ping)價導(dao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)性(xing)的指標,它對(dui)除(chu)(chu)塵(chen)(chen)(chen)效(xiao)(xiao)率(lv)有直接的影響。比(bi)(bi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)過低,塵(chen)(chen)(chen)粒難(nan)以保持在(zai)(zai)集塵(chen)(chen)(chen)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)上,致使其重返氣(qi)(qi)流(liu)(liu)。比(bi)(bi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)過高,到達(da)集塵(chen)(chen)(chen)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)的塵(chen)(chen)(chen)粒電(dian)(dian)(dian)(dian)(dian)(dian)(dian)荷不易放出(chu),在(zai)(zai)塵(chen)(chen)(chen)層之間(jian)形成電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓梯(ti)度會(hui)產生局部(bu)擊穿和放電(dian)(dian)(dian)(dian)(dian)(dian)(dian)現象。這(zhe)些情(qing)況都會(hui)造成除(chu)(chu)塵(chen)(chen)(chen)效(xiao)(xiao)率(lv)下(xia)降。
電除(chu)塵器的基本原理是利用電力捕集煙氣中的粉(fen)塵,主要包括(kuo)以下(xia)四個相互有關的物理過程: (1) 氣體(ti)的電離(li)。(2) 粉(fen)塵的荷電。(3) 荷電粉(fen)塵向(xiang)電極移動。(4) 荷電粉(fen)塵的捕集。