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)除塵(chen)(chen)(chen)(chen)器(qi)是以靜電(dian)(dian)(dian)(dian)(dian)凈(jing)(jing)化(hua)法來收(shou)捕(bu)廢氣中(zhong)的(de)(de)(de)粉(fen)塵(chen)(chen)(chen)(chen),它的(de)(de)(de)凈(jing)(jing)化(hua)工作(zuo)上要是依靠電(dian)(dian)(dian)(dian)(dian)暈(yun)極(ji)和沉(chen)淀兩個系統來完成的(de)(de)(de),當含(han)塵(chen)(chen)(chen)(chen)氣體(ti)(ti)進(jin)人(ren)氣刺叭時,含(han)塵(chen)(chen)(chen)(chen)氣體(ti)(ti)受到(dao)氣流(liu)分布(bu)板(ban)以及折流(liu)板(ban)的(de)(de)(de)調整后,使(shi)氣流(liu)能較均勻地進(jin)人(ren)電(dian)(dian)(dian)(dian)(dian)場(chang)。在(zai)(zai)橫斷面擴大(da)的(de)(de)(de)作(zuo)用(yong)下,氣流(liu)速(su)度迅速(su)降低,其中(zhong)有些較重(zhong)的(de)(de)(de)塵(chen)(chen)(chen)(chen)粒便失去速(su)度而(er)沉(chen)降下來。進(jin)人(ren)電(dian)(dian)(dian)(dian)(dian)場(chang)的(de)(de)(de)含(han)塵(chen)(chen)(chen)(chen)氣體(ti)(ti)由于電(dian)(dian)(dian)(dian)(dian)暈(yun)極(ji)通人(ren)高壓直(zhi)流(liu)電(dian)(dian)(dian)(dian)(dian),則在(zai)(zai)電(dian)(dian)(dian)(dian)(dian)暈(yun)極(ji)附近產生(sheng)電(dian)(dian)(dian)(dian)(dian)暈(yun)現象,使(shi)氣體(ti)(ti)電(dian)(dian)(dian)(dian)(dian)離(li),電(dian)(dian)(dian)(dian)(dian)離(li)后的(de)(de)(de)氣體(ti)(ti)中(zhong)存在(zai)(zai)大(da)量的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)子(zi)和離(li)子(zi),這些電(dian)(dian)(dian)(dian)(dian)子(zi)和離(li)子(zi)與進(jin)人(ren)電(dian)(dian)(dian)(dian)(dian)場(chang)的(de)(de)(de)粉(fen)塵(chen)(chen)(chen)(chen)結合起來,使(shi)塵(chen)(chen)(chen)(chen)粒帶電(dian)(dian)(dian)(dian)(dian),帶電(dian)(dian)(dian)(dian)(dian)塵(chen)(chen)(chen)(chen)粒在(zai)(zai)電(dian)(dian)(dian)(dian)(dian)場(chang)力的(de)(de)(de)作(zuo)用(yong)下趨向本設(she)備(bei)陽極(ji)(正極(ji)、本設(she)備(bei)采用(yong)負高壓制)和陰(yin)極(ji)(負極(ji)) , 釋放出電(dian)(dian)(dian)(dian)(dian)子(zi)分別沉(chen)積在(zai)(zai)相應的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)極(ji)上,通過設(she)備(bei)陰(yin)陽極(ji)振打(da)系統的(de)(de)(de)振打(da),使(shi)沉(chen)積在(zai)(zai)陰(yin)陽電(dian)(dian)(dian)(dian)(dian)極(ji)上的(de)(de)(de)粉(fen)塵(chen)(chen)(chen)(chen)振落,進(jin)人(ren)集灰(hui)斗 通過排(pai)灰(hui)裝置放出,回收(shou)有物料,被)凈(jing)(jing)化(hua)的(de)(de)(de)氣體(ti)(ti)排(pai)入大(da)氣。
工作(zuo)原理
靜(jing)電(dian)(dian)除(chu)塵(chen)(chen)(chen)器(qi)(qi)的工作(zuo)原理是利用高壓(ya)電(dian)(dian)場使(shi)(shi)煙(yan)(yan)氣(qi)發生(sheng)電(dian)(dian)離(li),氣(qi)流(liu)中的粉塵(chen)(chen)(chen)荷(he)電(dian)(dian)在(zai)(zai)電(dian)(dian)場作(zuo)用下(xia)與氣(qi)流(liu)分離(li)。負(fu)極(ji)由不(bu)同(tong)斷面形狀的金(jin)屬(shu)導(dao)線制(zhi)成(cheng),叫(jiao)放電(dian)(dian)電(dian)(dian)極(ji)。正極(ji)由不(bu)同(tong)幾何形狀的金(jin)屬(shu)板制(zhi)成(cheng),叫(jiao)集(ji)塵(chen)(chen)(chen)電(dian)(dian)極(ji)。靜(jing)電(dian)(dian)除(chu)塵(chen)(chen)(chen)器(qi)(qi)的性(xing)能受粉塵(chen)(chen)(chen)性(xing)質、設備構(gou)造(zao)和煙(yan)(yan)氣(qi)流(liu)速等三個因素的影響(xiang)。粉塵(chen)(chen)(chen)的比(bi)電(dian)(dian)阻(zu)是評價導(dao)電(dian)(dian)性(xing)的指標(biao),它(ta)對除(chu)塵(chen)(chen)(chen)效(xiao)率(lv)有直接的影響(xiang)。比(bi)電(dian)(dian)阻(zu)過低,塵(chen)(chen)(chen)粒難以保(bao)持在(zai)(zai)集(ji)塵(chen)(chen)(chen)電(dian)(dian)極(ji)上(shang),致使(shi)(shi)其重返氣(qi)流(liu)。比(bi)電(dian)(dian)阻(zu)過高,到達(da)集(ji)塵(chen)(chen)(chen)電(dian)(dian)極(ji)的塵(chen)(chen)(chen)粒電(dian)(dian)荷(he)不(bu)易(yi)放出,在(zai)(zai)塵(chen)(chen)(chen)層之間形成(cheng)電(dian)(dian)壓(ya)梯度會(hui)產生(sheng)局部擊穿(chuan)和放電(dian)(dian)現象。這些情況都會(hui)造(zao)成(cheng)除(chu)塵(chen)(chen)(chen)效(xiao)率(lv)下(xia)降。
電(dian)除塵(chen)器的(de)基本原理(li)是利用電(dian)力(li)捕集煙氣中的(de)粉塵(chen),主要包括(kuo)以(yi)下四個相互有關的(de)物理(li)過程: (1) 氣體的(de)電(dian)離。(2) 粉塵(chen)的(de)荷電(dian)。(3) 荷電(dian)粉塵(chen)向(xiang)電(dian)極移動。(4) 荷電(dian)粉塵(chen)的(de)捕集。