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)除(chu)塵(chen)(chen)(chen)器是以(yi)靜電(dian)(dian)(dian)凈化(hua)(hua)法來收捕廢氣(qi)(qi)中的(de)(de)粉(fen)塵(chen)(chen)(chen),它的(de)(de)凈化(hua)(hua)工作上要是依靠電(dian)(dian)(dian)暈(yun)極(ji)(ji)和沉淀兩個系統(tong)來完成(cheng)的(de)(de),當含(han)塵(chen)(chen)(chen)氣(qi)(qi)體進(jin)(jin)人(ren)氣(qi)(qi)刺叭(ba)時,含(han)塵(chen)(chen)(chen)氣(qi)(qi)體受(shou)到氣(qi)(qi)流(liu)(liu)分(fen)布(bu)板(ban)(ban)以(yi)及(ji)折流(liu)(liu)板(ban)(ban)的(de)(de)調整后,使氣(qi)(qi)流(liu)(liu)能較均勻(yun)地進(jin)(jin)人(ren)電(dian)(dian)(dian)場(chang)。在(zai)橫斷面擴大的(de)(de)作用(yong)下,氣(qi)(qi)流(liu)(liu)速(su)度(du)迅速(su)降(jiang)低(di),其中有(you)些較重(zhong)的(de)(de)塵(chen)(chen)(chen)粒(li)便失(shi)去速(su)度(du)而沉降(jiang)下來。進(jin)(jin)人(ren)電(dian)(dian)(dian)場(chang)的(de)(de)含(han)塵(chen)(chen)(chen)氣(qi)(qi)體由于電(dian)(dian)(dian)暈(yun)極(ji)(ji)通人(ren)高壓(ya)直流(liu)(liu)電(dian)(dian)(dian),則在(zai)電(dian)(dian)(dian)暈(yun)極(ji)(ji)附近產(chan)生電(dian)(dian)(dian)暈(yun)現(xian)象,使氣(qi)(qi)體電(dian)(dian)(dian)離(li),電(dian)(dian)(dian)離(li)后的(de)(de)氣(qi)(qi)體中存在(zai)大量的(de)(de)電(dian)(dian)(dian)子(zi)和離(li)子(zi),這些電(dian)(dian)(dian)子(zi)和離(li)子(zi)與進(jin)(jin)人(ren)電(dian)(dian)(dian)場(chang)的(de)(de)粉(fen)塵(chen)(chen)(chen)結合(he)起來,使塵(chen)(chen)(chen)粒(li)帶(dai)電(dian)(dian)(dian),帶(dai)電(dian)(dian)(dian)塵(chen)(chen)(chen)粒(li)在(zai)電(dian)(dian)(dian)場(chang)力的(de)(de)作用(yong)下趨向(xiang)本(ben)設備(bei)陽(yang)(yang)極(ji)(ji)(正極(ji)(ji)、本(ben)設備(bei)采用(yong)負(fu)(fu)高壓(ya)制)和陰(yin)極(ji)(ji)(負(fu)(fu)極(ji)(ji)) , 釋放出電(dian)(dian)(dian)子(zi)分(fen)別沉積在(zai)相應的(de)(de)電(dian)(dian)(dian)極(ji)(ji)上,通過設備(bei)陰(yin)陽(yang)(yang)極(ji)(ji)振打系統(tong)的(de)(de)振打,使沉積在(zai)陰(yin)陽(yang)(yang)電(dian)(dian)(dian)極(ji)(ji)上的(de)(de)粉(fen)塵(chen)(chen)(chen)振落(luo),進(jin)(jin)人(ren)集灰(hui)(hui)斗 通過排灰(hui)(hui)裝置放出,回收有(you)物料,被(bei))凈化(hua)(hua)的(de)(de)氣(qi)(qi)體排入大氣(qi)(qi)。
工作原理
靜電(dian)(dian)(dian)(dian)除(chu)(chu)(chu)塵(chen)(chen)器的(de)(de)(de)(de)工作(zuo)原理是(shi)利(li)用高(gao)壓電(dian)(dian)(dian)(dian)場使煙氣(qi)(qi)(qi)發生電(dian)(dian)(dian)(dian)離,氣(qi)(qi)(qi)流中的(de)(de)(de)(de)粉(fen)塵(chen)(chen)荷電(dian)(dian)(dian)(dian)在(zai)電(dian)(dian)(dian)(dian)場作(zuo)用下與氣(qi)(qi)(qi)流分離。負極(ji)(ji)(ji)(ji)由不(bu)同(tong)斷(duan)面形(xing)狀(zhuang)的(de)(de)(de)(de)金屬(shu)導線(xian)制(zhi)成(cheng),叫(jiao)放電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)極(ji)(ji)(ji)(ji)。正極(ji)(ji)(ji)(ji)由不(bu)同(tong)幾何形(xing)狀(zhuang)的(de)(de)(de)(de)金屬(shu)板制(zhi)成(cheng),叫(jiao)集塵(chen)(chen)電(dian)(dian)(dian)(dian)極(ji)(ji)(ji)(ji)。靜電(dian)(dian)(dian)(dian)除(chu)(chu)(chu)塵(chen)(chen)器的(de)(de)(de)(de)性能受粉(fen)塵(chen)(chen)性質、設備構造和(he)煙氣(qi)(qi)(qi)流速(su)等三個因(yin)素的(de)(de)(de)(de)影響(xiang)。粉(fen)塵(chen)(chen)的(de)(de)(de)(de)比(bi)電(dian)(dian)(dian)(dian)阻(zu)是(shi)評價導電(dian)(dian)(dian)(dian)性的(de)(de)(de)(de)指(zhi)標,它(ta)對除(chu)(chu)(chu)塵(chen)(chen)效率有直接(jie)的(de)(de)(de)(de)影響(xiang)。比(bi)電(dian)(dian)(dian)(dian)阻(zu)過低,塵(chen)(chen)粒難(nan)以保持在(zai)集塵(chen)(chen)電(dian)(dian)(dian)(dian)極(ji)(ji)(ji)(ji)上,致(zhi)使其重(zhong)返氣(qi)(qi)(qi)流。比(bi)電(dian)(dian)(dian)(dian)阻(zu)過高(gao),到達集塵(chen)(chen)電(dian)(dian)(dian)(dian)極(ji)(ji)(ji)(ji)的(de)(de)(de)(de)塵(chen)(chen)粒電(dian)(dian)(dian)(dian)荷不(bu)易放出(chu),在(zai)塵(chen)(chen)層之間形(xing)成(cheng)電(dian)(dian)(dian)(dian)壓梯度會(hui)產生局(ju)部擊穿和(he)放電(dian)(dian)(dian)(dian)現象。這些情況(kuang)都(dou)會(hui)造成(cheng)除(chu)(chu)(chu)塵(chen)(chen)效率下降(jiang)。
電(dian)(dian)(dian)除(chu)塵(chen)(chen)器的(de)基本原理(li)是利用電(dian)(dian)(dian)力(li)捕集煙氣中的(de)粉塵(chen)(chen),主要包括(kuo)以下(xia)四個相互(hu)有關的(de)物理(li)過程: (1) 氣體(ti)的(de)電(dian)(dian)(dian)離。(2) 粉塵(chen)(chen)的(de)荷(he)電(dian)(dian)(dian)。(3) 荷(he)電(dian)(dian)(dian)粉塵(chen)(chen)向電(dian)(dian)(dian)極移(yi)動。(4) 荷(he)電(dian)(dian)(dian)粉塵(chen)(chen)的(de)捕集。