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)(jing)電(dian)(dian)(dian)(dian)除塵(chen)(chen)(chen)器是(shi)(shi)以靜(jing)(jing)電(dian)(dian)(dian)(dian)凈(jing)化(hua)法來(lai)收捕廢氣(qi)(qi)(qi)中(zhong)(zhong)的(de)(de)(de)粉(fen)塵(chen)(chen)(chen),它的(de)(de)(de)凈(jing)化(hua)工作(zuo)上(shang)要是(shi)(shi)依靠電(dian)(dian)(dian)(dian)暈(yun)極(ji)(ji)(ji)(ji)和(he)(he)沉(chen)淀兩個系統(tong)來(lai)完成的(de)(de)(de),當含(han)塵(chen)(chen)(chen)氣(qi)(qi)(qi)體進人(ren)(ren)(ren)(ren)氣(qi)(qi)(qi)刺叭(ba)時(shi),含(han)塵(chen)(chen)(chen)氣(qi)(qi)(qi)體受到氣(qi)(qi)(qi)流分布板以及(ji)折流板的(de)(de)(de)調整后(hou),使氣(qi)(qi)(qi)流能(neng)較均勻地進人(ren)(ren)(ren)(ren)電(dian)(dian)(dian)(dian)場。在(zai)橫斷面擴大的(de)(de)(de)作(zuo)用下(xia),氣(qi)(qi)(qi)流速(su)度迅速(su)降(jiang)低,其中(zhong)(zhong)有些(xie)較重的(de)(de)(de)塵(chen)(chen)(chen)粒便失去速(su)度而沉(chen)降(jiang)下(xia)來(lai)。進人(ren)(ren)(ren)(ren)電(dian)(dian)(dian)(dian)場的(de)(de)(de)含(han)塵(chen)(chen)(chen)氣(qi)(qi)(qi)體由于電(dian)(dian)(dian)(dian)暈(yun)極(ji)(ji)(ji)(ji)通人(ren)(ren)(ren)(ren)高壓直流電(dian)(dian)(dian)(dian),則在(zai)電(dian)(dian)(dian)(dian)暈(yun)極(ji)(ji)(ji)(ji)附近產生電(dian)(dian)(dian)(dian)暈(yun)現(xian)象,使氣(qi)(qi)(qi)體電(dian)(dian)(dian)(dian)離(li),電(dian)(dian)(dian)(dian)離(li)后(hou)的(de)(de)(de)氣(qi)(qi)(qi)體中(zhong)(zhong)存在(zai)大量的(de)(de)(de)電(dian)(dian)(dian)(dian)子(zi)(zi)(zi)和(he)(he)離(li)子(zi)(zi)(zi),這些(xie)電(dian)(dian)(dian)(dian)子(zi)(zi)(zi)和(he)(he)離(li)子(zi)(zi)(zi)與進人(ren)(ren)(ren)(ren)電(dian)(dian)(dian)(dian)場的(de)(de)(de)粉(fen)塵(chen)(chen)(chen)結合起來(lai),使塵(chen)(chen)(chen)粒帶電(dian)(dian)(dian)(dian),帶電(dian)(dian)(dian)(dian)塵(chen)(chen)(chen)粒在(zai)電(dian)(dian)(dian)(dian)場力的(de)(de)(de)作(zuo)用下(xia)趨向本(ben)設(she)備陽極(ji)(ji)(ji)(ji)(正極(ji)(ji)(ji)(ji)、本(ben)設(she)備采(cai)用負高壓制)和(he)(he)陰(yin)極(ji)(ji)(ji)(ji)(負極(ji)(ji)(ji)(ji)) , 釋放出電(dian)(dian)(dian)(dian)子(zi)(zi)(zi)分別沉(chen)積在(zai)相應的(de)(de)(de)電(dian)(dian)(dian)(dian)極(ji)(ji)(ji)(ji)上(shang),通過設(she)備陰(yin)陽極(ji)(ji)(ji)(ji)振(zhen)(zhen)打系統(tong)的(de)(de)(de)振(zhen)(zhen)打,使沉(chen)積在(zai)陰(yin)陽電(dian)(dian)(dian)(dian)極(ji)(ji)(ji)(ji)上(shang)的(de)(de)(de)粉(fen)塵(chen)(chen)(chen)振(zhen)(zhen)落,進人(ren)(ren)(ren)(ren)集(ji)灰(hui)斗 通過排灰(hui)裝置放出,回收有物料(liao),被)凈(jing)化(hua)的(de)(de)(de)氣(qi)(qi)(qi)體排入大氣(qi)(qi)(qi)。
工作原理
靜電(dian)(dian)除(chu)塵(chen)(chen)(chen)器的(de)工作(zuo)原理是利用高壓電(dian)(dian)場使煙氣發生電(dian)(dian)離,氣流(liu)中的(de)粉塵(chen)(chen)(chen)荷(he)電(dian)(dian)在電(dian)(dian)場作(zuo)用下與氣流(liu)分離。負極(ji)(ji)由不同(tong)(tong)斷面形狀(zhuang)的(de)金屬(shu)導線制成(cheng),叫放電(dian)(dian)電(dian)(dian)極(ji)(ji)。正(zheng)極(ji)(ji)由不同(tong)(tong)幾何(he)形狀(zhuang)的(de)金屬(shu)板制成(cheng),叫集(ji)塵(chen)(chen)(chen)電(dian)(dian)極(ji)(ji)。靜電(dian)(dian)除(chu)塵(chen)(chen)(chen)器的(de)性能(neng)受粉塵(chen)(chen)(chen)性質、設備構(gou)造和煙氣流(liu)速(su)等三個(ge)因素(su)的(de)影響(xiang)。粉塵(chen)(chen)(chen)的(de)比電(dian)(dian)阻(zu)是評(ping)價(jia)導電(dian)(dian)性的(de)指標(biao),它對除(chu)塵(chen)(chen)(chen)效率(lv)有(you)直接(jie)的(de)影響(xiang)。比電(dian)(dian)阻(zu)過低,塵(chen)(chen)(chen)粒難以保持在集(ji)塵(chen)(chen)(chen)電(dian)(dian)極(ji)(ji)上,致(zhi)使其重返氣流(liu)。比電(dian)(dian)阻(zu)過高,到達集(ji)塵(chen)(chen)(chen)電(dian)(dian)極(ji)(ji)的(de)塵(chen)(chen)(chen)粒電(dian)(dian)荷(he)不易放出(chu),在塵(chen)(chen)(chen)層之間形成(cheng)電(dian)(dian)壓梯度會產生局部擊穿和放電(dian)(dian)現象。這些(xie)情況都會造成(cheng)除(chu)塵(chen)(chen)(chen)效率(lv)下降。
電(dian)(dian)除(chu)塵(chen)器的(de)基(ji)本原理(li)是(shi)利用電(dian)(dian)力捕集煙(yan)氣(qi)中的(de)粉塵(chen),主(zhu)要(yao)包括以下四個相互有關的(de)物理(li)過程: (1) 氣(qi)體(ti)的(de)電(dian)(dian)離。(2) 粉塵(chen)的(de)荷(he)電(dian)(dian)。(3) 荷(he)電(dian)(dian)粉塵(chen)向電(dian)(dian)極移(yi)動(dong)。(4) 荷(he)電(dian)(dian)粉塵(chen)的(de)捕集。