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)除塵(chen)(chen)器是以靜電(dian)(dian)凈化(hua)法來(lai)(lai)收捕廢(fei)氣(qi)(qi)(qi)(qi)(qi)(qi)中(zhong)的(de)粉(fen)(fen)塵(chen)(chen),它的(de)凈化(hua)工作上要是依靠(kao)電(dian)(dian)暈極和沉(chen)(chen)淀兩(liang)個(ge)系統來(lai)(lai)完成的(de),當含(han)塵(chen)(chen)氣(qi)(qi)(qi)(qi)(qi)(qi)體(ti)進(jin)人(ren)(ren)(ren)(ren)氣(qi)(qi)(qi)(qi)(qi)(qi)刺叭時,含(han)塵(chen)(chen)氣(qi)(qi)(qi)(qi)(qi)(qi)體(ti)受到氣(qi)(qi)(qi)(qi)(qi)(qi)流(liu)(liu)分(fen)布(bu)板以及折流(liu)(liu)板的(de)調整(zheng)后,使(shi)(shi)氣(qi)(qi)(qi)(qi)(qi)(qi)流(liu)(liu)能(neng)較均勻地進(jin)人(ren)(ren)(ren)(ren)電(dian)(dian)場(chang)。在橫斷(duan)面擴大的(de)作用下,氣(qi)(qi)(qi)(qi)(qi)(qi)流(liu)(liu)速(su)度迅速(su)降低,其(qi)中(zhong)有些較重的(de)塵(chen)(chen)粒便(bian)失去速(su)度而(er)沉(chen)(chen)降下來(lai)(lai)。進(jin)人(ren)(ren)(ren)(ren)電(dian)(dian)場(chang)的(de)含(han)塵(chen)(chen)氣(qi)(qi)(qi)(qi)(qi)(qi)體(ti)由于電(dian)(dian)暈極通(tong)人(ren)(ren)(ren)(ren)高壓直流(liu)(liu)電(dian)(dian),則在電(dian)(dian)暈極附近(jin)產生電(dian)(dian)暈現(xian)象(xiang),使(shi)(shi)氣(qi)(qi)(qi)(qi)(qi)(qi)體(ti)電(dian)(dian)離(li),電(dian)(dian)離(li)后的(de)氣(qi)(qi)(qi)(qi)(qi)(qi)體(ti)中(zhong)存在大量(liang)的(de)電(dian)(dian)子(zi)(zi)和離(li)子(zi)(zi),這些電(dian)(dian)子(zi)(zi)和離(li)子(zi)(zi)與進(jin)人(ren)(ren)(ren)(ren)電(dian)(dian)場(chang)的(de)粉(fen)(fen)塵(chen)(chen)結合起(qi)來(lai)(lai),使(shi)(shi)塵(chen)(chen)粒帶(dai)電(dian)(dian),帶(dai)電(dian)(dian)塵(chen)(chen)粒在電(dian)(dian)場(chang)力的(de)作用下趨向(xiang)本設(she)備(bei)陽(yang)極(正極、本設(she)備(bei)采用負高壓制)和陰極(負極) , 釋放(fang)出電(dian)(dian)子(zi)(zi)分(fen)別(bie)沉(chen)(chen)積在相(xiang)應的(de)電(dian)(dian)極上,通(tong)過設(she)備(bei)陰陽(yang)極振打(da)系統的(de)振打(da),使(shi)(shi)沉(chen)(chen)積在陰陽(yang)電(dian)(dian)極上的(de)粉(fen)(fen)塵(chen)(chen)振落,進(jin)人(ren)(ren)(ren)(ren)集灰斗 通(tong)過排灰裝置放(fang)出,回收有物(wu)料(liao),被)凈化(hua)的(de)氣(qi)(qi)(qi)(qi)(qi)(qi)體(ti)排入大氣(qi)(qi)(qi)(qi)(qi)(qi)。
工作原(yuan)理
靜電(dian)(dian)除(chu)塵(chen)(chen)器(qi)的(de)工作原(yuan)理(li)是(shi)利用高(gao)壓電(dian)(dian)場(chang)(chang)使煙氣(qi)(qi)發生(sheng)電(dian)(dian)離(li),氣(qi)(qi)流中的(de)粉(fen)(fen)塵(chen)(chen)荷(he)電(dian)(dian)在(zai)電(dian)(dian)場(chang)(chang)作用下(xia)與氣(qi)(qi)流分離(li)。負(fu)極(ji)由不同斷面形狀(zhuang)的(de)金(jin)(jin)屬導(dao)線制(zhi)成(cheng)(cheng),叫放電(dian)(dian)電(dian)(dian)極(ji)。正極(ji)由不同幾(ji)何(he)形狀(zhuang)的(de)金(jin)(jin)屬板制(zhi)成(cheng)(cheng),叫集(ji)塵(chen)(chen)電(dian)(dian)極(ji)。靜電(dian)(dian)除(chu)塵(chen)(chen)器(qi)的(de)性(xing)(xing)能受(shou)粉(fen)(fen)塵(chen)(chen)性(xing)(xing)質(zhi)、設備構造(zao)和(he)(he)煙氣(qi)(qi)流速等三個(ge)因素的(de)影(ying)響。粉(fen)(fen)塵(chen)(chen)的(de)比(bi)電(dian)(dian)阻是(shi)評(ping)價導(dao)電(dian)(dian)性(xing)(xing)的(de)指標,它對(dui)除(chu)塵(chen)(chen)效率有直接的(de)影(ying)響。比(bi)電(dian)(dian)阻過低,塵(chen)(chen)粒(li)難以保持(chi)在(zai)集(ji)塵(chen)(chen)電(dian)(dian)極(ji)上,致使其(qi)重(zhong)返氣(qi)(qi)流。比(bi)電(dian)(dian)阻過高(gao),到達集(ji)塵(chen)(chen)電(dian)(dian)極(ji)的(de)塵(chen)(chen)粒(li)電(dian)(dian)荷(he)不易(yi)放出,在(zai)塵(chen)(chen)層之間(jian)形成(cheng)(cheng)電(dian)(dian)壓梯度會(hui)產(chan)生(sheng)局部擊穿和(he)(he)放電(dian)(dian)現象。這些(xie)情況都會(hui)造(zao)成(cheng)(cheng)除(chu)塵(chen)(chen)效率下(xia)降。
電(dian)(dian)除塵(chen)器的(de)基本(ben)原理(li)是利(li)用電(dian)(dian)力捕集煙(yan)氣(qi)中(zhong)的(de)粉塵(chen),主要包括以下四個相互有關的(de)物理(li)過程: (1) 氣(qi)體的(de)電(dian)(dian)離。(2) 粉塵(chen)的(de)荷電(dian)(dian)。(3) 荷電(dian)(dian)粉塵(chen)向電(dian)(dian)極移(yi)動。(4) 荷電(dian)(dian)粉塵(chen)的(de)捕集。