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)(chen)(chen)(chen)(chen)器是以(yi)靜(jing)電(dian)(dian)(dian)(dian)凈化(hua)法來(lai)收(shou)捕(bu)廢氣(qi)中(zhong)的(de)(de)(de)(de)(de)粉(fen)塵(chen)(chen)(chen)(chen)(chen),它的(de)(de)(de)(de)(de)凈化(hua)工作(zuo)上要是依靠(kao)電(dian)(dian)(dian)(dian)暈(yun)極(ji)(ji)(ji)和(he)沉(chen)(chen)淀兩個系(xi)統來(lai)完成的(de)(de)(de)(de)(de),當含塵(chen)(chen)(chen)(chen)(chen)氣(qi)體(ti)(ti)進(jin)人(ren)氣(qi)刺叭(ba)時,含塵(chen)(chen)(chen)(chen)(chen)氣(qi)體(ti)(ti)受到氣(qi)流分(fen)(fen)布(bu)板(ban)以(yi)及(ji)折流板(ban)的(de)(de)(de)(de)(de)調整后,使(shi)(shi)氣(qi)流能(neng)較均勻地進(jin)人(ren)電(dian)(dian)(dian)(dian)場(chang)。在(zai)(zai)(zai)橫斷(duan)面擴大(da)的(de)(de)(de)(de)(de)作(zuo)用下(xia)(xia),氣(qi)流速(su)(su)度迅速(su)(su)降(jiang)低,其中(zhong)有(you)些較重的(de)(de)(de)(de)(de)塵(chen)(chen)(chen)(chen)(chen)粒便失去速(su)(su)度而沉(chen)(chen)降(jiang)下(xia)(xia)來(lai)。進(jin)人(ren)電(dian)(dian)(dian)(dian)場(chang)的(de)(de)(de)(de)(de)含塵(chen)(chen)(chen)(chen)(chen)氣(qi)體(ti)(ti)由(you)于電(dian)(dian)(dian)(dian)暈(yun)極(ji)(ji)(ji)通(tong)人(ren)高壓直流電(dian)(dian)(dian)(dian),則在(zai)(zai)(zai)電(dian)(dian)(dian)(dian)暈(yun)極(ji)(ji)(ji)附近(jin)產生(sheng)電(dian)(dian)(dian)(dian)暈(yun)現象,使(shi)(shi)氣(qi)體(ti)(ti)電(dian)(dian)(dian)(dian)離(li),電(dian)(dian)(dian)(dian)離(li)后的(de)(de)(de)(de)(de)氣(qi)體(ti)(ti)中(zhong)存在(zai)(zai)(zai)大(da)量的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)子(zi)和(he)離(li)子(zi),這(zhe)些電(dian)(dian)(dian)(dian)子(zi)和(he)離(li)子(zi)與進(jin)人(ren)電(dian)(dian)(dian)(dian)場(chang)的(de)(de)(de)(de)(de)粉(fen)塵(chen)(chen)(chen)(chen)(chen)結(jie)合(he)起來(lai),使(shi)(shi)塵(chen)(chen)(chen)(chen)(chen)粒帶電(dian)(dian)(dian)(dian),帶電(dian)(dian)(dian)(dian)塵(chen)(chen)(chen)(chen)(chen)粒在(zai)(zai)(zai)電(dian)(dian)(dian)(dian)場(chang)力的(de)(de)(de)(de)(de)作(zuo)用下(xia)(xia)趨向(xiang)本(ben)設(she)備(bei)陽極(ji)(ji)(ji)(正極(ji)(ji)(ji)、本(ben)設(she)備(bei)采用負高壓制)和(he)陰極(ji)(ji)(ji)(負極(ji)(ji)(ji)) , 釋放出(chu)電(dian)(dian)(dian)(dian)子(zi)分(fen)(fen)別沉(chen)(chen)積在(zai)(zai)(zai)相應的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)極(ji)(ji)(ji)上,通(tong)過(guo)設(she)備(bei)陰陽極(ji)(ji)(ji)振打系(xi)統的(de)(de)(de)(de)(de)振打,使(shi)(shi)沉(chen)(chen)積在(zai)(zai)(zai)陰陽電(dian)(dian)(dian)(dian)極(ji)(ji)(ji)上的(de)(de)(de)(de)(de)粉(fen)塵(chen)(chen)(chen)(chen)(chen)振落(luo),進(jin)人(ren)集灰(hui)斗 通(tong)過(guo)排灰(hui)裝置(zhi)放出(chu),回收(shou)有(you)物料,被)凈化(hua)的(de)(de)(de)(de)(de)氣(qi)體(ti)(ti)排入(ru)大(da)氣(qi)。
工作原理
靜電(dian)(dian)除(chu)塵(chen)(chen)(chen)(chen)(chen)(chen)器的(de)(de)工作原理是(shi)利用(yong)高(gao)壓電(dian)(dian)場(chang)使(shi)煙(yan)氣(qi)發生(sheng)電(dian)(dian)離(li),氣(qi)流中的(de)(de)粉(fen)塵(chen)(chen)(chen)(chen)(chen)(chen)荷(he)電(dian)(dian)在電(dian)(dian)場(chang)作用(yong)下(xia)與(yu)氣(qi)流分(fen)離(li)。負極(ji)由(you)不同斷面形(xing)狀的(de)(de)金屬導線(xian)制(zhi)成(cheng),叫放(fang)電(dian)(dian)電(dian)(dian)極(ji)。正(zheng)極(ji)由(you)不同幾何形(xing)狀的(de)(de)金屬板制(zhi)成(cheng),叫集塵(chen)(chen)(chen)(chen)(chen)(chen)電(dian)(dian)極(ji)。靜電(dian)(dian)除(chu)塵(chen)(chen)(chen)(chen)(chen)(chen)器的(de)(de)性能受粉(fen)塵(chen)(chen)(chen)(chen)(chen)(chen)性質、設備(bei)構(gou)造和煙(yan)氣(qi)流速等三個因素的(de)(de)影(ying)(ying)響(xiang)。粉(fen)塵(chen)(chen)(chen)(chen)(chen)(chen)的(de)(de)比電(dian)(dian)阻是(shi)評價(jia)導電(dian)(dian)性的(de)(de)指(zhi)標(biao),它對除(chu)塵(chen)(chen)(chen)(chen)(chen)(chen)效率有直接的(de)(de)影(ying)(ying)響(xiang)。比電(dian)(dian)阻過低(di),塵(chen)(chen)(chen)(chen)(chen)(chen)粒難以保持在集塵(chen)(chen)(chen)(chen)(chen)(chen)電(dian)(dian)極(ji)上(shang),致(zhi)使(shi)其重(zhong)返(fan)氣(qi)流。比電(dian)(dian)阻過高(gao),到(dao)達集塵(chen)(chen)(chen)(chen)(chen)(chen)電(dian)(dian)極(ji)的(de)(de)塵(chen)(chen)(chen)(chen)(chen)(chen)粒電(dian)(dian)荷(he)不易放(fang)出,在塵(chen)(chen)(chen)(chen)(chen)(chen)層之間(jian)形(xing)成(cheng)電(dian)(dian)壓梯度會產生(sheng)局部擊穿和放(fang)電(dian)(dian)現象。這些情況(kuang)都會造成(cheng)除(chu)塵(chen)(chen)(chen)(chen)(chen)(chen)效率下(xia)降(jiang)。
電(dian)除塵器的基本原理是利(li)用電(dian)力捕(bu)集煙(yan)氣中的粉塵,主要包括(kuo)以下四(si)個相(xiang)互有關的物理過(guo)程: (1) 氣體的電(dian)離。(2) 粉塵的荷(he)電(dian)。(3) 荷(he)電(dian)粉塵向電(dian)極(ji)移(yi)動。(4) 荷(he)電(dian)粉塵的捕(bu)集。