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(dian)(dian)(dian)(dian)除塵(chen)器是(shi)以靜(jing)電(dian)(dian)(dian)(dian)凈化(hua)法來收(shou)捕廢氣(qi)(qi)(qi)(qi)中的(de)(de)(de)粉塵(chen),它(ta)的(de)(de)(de)凈化(hua)工作(zuo)上(shang)要是(shi)依靠電(dian)(dian)(dian)(dian)暈極(ji)和(he)沉(chen)淀兩個系統來完成(cheng)的(de)(de)(de),當含塵(chen)氣(qi)(qi)(qi)(qi)體(ti)進人(ren)氣(qi)(qi)(qi)(qi)刺叭時,含塵(chen)氣(qi)(qi)(qi)(qi)體(ti)受到(dao)氣(qi)(qi)(qi)(qi)流(liu)分布(bu)板(ban)以及折流(liu)板(ban)的(de)(de)(de)調整(zheng)后,使(shi)氣(qi)(qi)(qi)(qi)流(liu)能(neng)較(jiao)均勻(yun)地進人(ren)電(dian)(dian)(dian)(dian)場(chang)(chang)。在橫斷面擴大的(de)(de)(de)作(zuo)用下,氣(qi)(qi)(qi)(qi)流(liu)速(su)度迅速(su)降低(di),其中有(you)些(xie)較(jiao)重的(de)(de)(de)塵(chen)粒便失去速(su)度而沉(chen)降下來。進人(ren)電(dian)(dian)(dian)(dian)場(chang)(chang)的(de)(de)(de)含塵(chen)氣(qi)(qi)(qi)(qi)體(ti)由(you)于電(dian)(dian)(dian)(dian)暈極(ji)通(tong)人(ren)高壓直流(liu)電(dian)(dian)(dian)(dian),則在電(dian)(dian)(dian)(dian)暈極(ji)附近產生電(dian)(dian)(dian)(dian)暈現象,使(shi)氣(qi)(qi)(qi)(qi)體(ti)電(dian)(dian)(dian)(dian)離,電(dian)(dian)(dian)(dian)離后的(de)(de)(de)氣(qi)(qi)(qi)(qi)體(ti)中存在大量的(de)(de)(de)電(dian)(dian)(dian)(dian)子(zi)(zi)和(he)離子(zi)(zi),這些(xie)電(dian)(dian)(dian)(dian)子(zi)(zi)和(he)離子(zi)(zi)與進人(ren)電(dian)(dian)(dian)(dian)場(chang)(chang)的(de)(de)(de)粉塵(chen)結合起來,使(shi)塵(chen)粒帶電(dian)(dian)(dian)(dian),帶電(dian)(dian)(dian)(dian)塵(chen)粒在電(dian)(dian)(dian)(dian)場(chang)(chang)力的(de)(de)(de)作(zuo)用下趨(qu)向(xiang)本(ben)設備陽極(ji)(正極(ji)、本(ben)設備采用負高壓制(zhi))和(he)陰極(ji)(負極(ji)) , 釋放出電(dian)(dian)(dian)(dian)子(zi)(zi)分別沉(chen)積在相應的(de)(de)(de)電(dian)(dian)(dian)(dian)極(ji)上(shang),通(tong)過設備陰陽極(ji)振打系統的(de)(de)(de)振打,使(shi)沉(chen)積在陰陽電(dian)(dian)(dian)(dian)極(ji)上(shang)的(de)(de)(de)粉塵(chen)振落,進人(ren)集灰斗(dou) 通(tong)過排(pai)灰裝置放出,回(hui)收(shou)有(you)物料,被)凈化(hua)的(de)(de)(de)氣(qi)(qi)(qi)(qi)體(ti)排(pai)入(ru)大氣(qi)(qi)(qi)(qi)。
工作(zuo)原(yuan)理
靜(jing)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)器的(de)(de)工作原理是利用高(gao)壓電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)場(chang)使(shi)煙氣發生電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)離,氣流(liu)中的(de)(de)粉(fen)塵(chen)(chen)(chen)荷電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)在電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)場(chang)作用下與氣流(liu)分離。負極(ji)(ji)由不同(tong)斷(duan)面形狀的(de)(de)金(jin)屬(shu)導線制成(cheng),叫放電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)。正(zheng)極(ji)(ji)由不同(tong)幾何(he)形狀的(de)(de)金(jin)屬(shu)板(ban)制成(cheng),叫集塵(chen)(chen)(chen)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)。靜(jing)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)器的(de)(de)性(xing)能(neng)受粉(fen)塵(chen)(chen)(chen)性(xing)質(zhi)、設(she)備構(gou)造和煙氣流(liu)速等三個(ge)因素的(de)(de)影(ying)響。粉(fen)塵(chen)(chen)(chen)的(de)(de)比電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)是評價導電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)性(xing)的(de)(de)指標(biao),它對(dui)除(chu)塵(chen)(chen)(chen)效率(lv)有(you)直接的(de)(de)影(ying)響。比電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)過低,塵(chen)(chen)(chen)粒(li)難以保(bao)持在集塵(chen)(chen)(chen)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)上,致使(shi)其重返氣流(liu)。比電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)過高(gao),到達集塵(chen)(chen)(chen)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)的(de)(de)塵(chen)(chen)(chen)粒(li)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)荷不易(yi)放出,在塵(chen)(chen)(chen)層(ceng)之間形成(cheng)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓梯度會產生局部擊穿和放電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)現象(xiang)。這些情(qing)況(kuang)都(dou)會造成(cheng)除(chu)塵(chen)(chen)(chen)效率(lv)下降。
電(dian)(dian)(dian)除塵(chen)器的基本原(yuan)理是利用電(dian)(dian)(dian)力捕集煙氣(qi)中的粉(fen)塵(chen),主要包括以(yi)下四個相互有關的物(wu)理過程(cheng): (1) 氣(qi)體的電(dian)(dian)(dian)離。(2) 粉(fen)塵(chen)的荷電(dian)(dian)(dian)。(3) 荷電(dian)(dian)(dian)粉(fen)塵(chen)向電(dian)(dian)(dian)極移動。(4) 荷電(dian)(dian)(dian)粉(fen)塵(chen)的捕集。