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)(dian)(dian)除塵(chen)器是(shi)以(yi)靜(jing)電(dian)(dian)(dian)(dian)(dian)(dian)凈(jing)化(hua)法來(lai)收捕廢氣(qi)(qi)中的(de)(de)(de)粉(fen)(fen)(fen)塵(chen),它(ta)的(de)(de)(de)凈(jing)化(hua)工作(zuo)上(shang)要是(shi)依靠電(dian)(dian)(dian)(dian)(dian)(dian)暈極(ji)(ji)(ji)和(he)沉(chen)淀兩個系(xi)統來(lai)完成(cheng)的(de)(de)(de),當含塵(chen)氣(qi)(qi)體(ti)(ti)進(jin)人(ren)氣(qi)(qi)刺叭時(shi),含塵(chen)氣(qi)(qi)體(ti)(ti)受到氣(qi)(qi)流(liu)分布板以(yi)及折流(liu)板的(de)(de)(de)調整后,使氣(qi)(qi)流(liu)能較均勻(yun)地(di)進(jin)人(ren)電(dian)(dian)(dian)(dian)(dian)(dian)場(chang)。在(zai)橫斷面擴大(da)的(de)(de)(de)作(zuo)用(yong)下(xia),氣(qi)(qi)流(liu)速度迅速降低,其中有(you)些較重的(de)(de)(de)塵(chen)粒便失去速度而沉(chen)降下(xia)來(lai)。進(jin)人(ren)電(dian)(dian)(dian)(dian)(dian)(dian)場(chang)的(de)(de)(de)含塵(chen)氣(qi)(qi)體(ti)(ti)由于(yu)電(dian)(dian)(dian)(dian)(dian)(dian)暈極(ji)(ji)(ji)通(tong)人(ren)高(gao)壓直流(liu)電(dian)(dian)(dian)(dian)(dian)(dian),則在(zai)電(dian)(dian)(dian)(dian)(dian)(dian)暈極(ji)(ji)(ji)附(fu)近(jin)產生(sheng)電(dian)(dian)(dian)(dian)(dian)(dian)暈現象,使氣(qi)(qi)體(ti)(ti)電(dian)(dian)(dian)(dian)(dian)(dian)離(li),電(dian)(dian)(dian)(dian)(dian)(dian)離(li)后的(de)(de)(de)氣(qi)(qi)體(ti)(ti)中存在(zai)大(da)量(liang)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)子(zi)和(he)離(li)子(zi),這些電(dian)(dian)(dian)(dian)(dian)(dian)子(zi)和(he)離(li)子(zi)與進(jin)人(ren)電(dian)(dian)(dian)(dian)(dian)(dian)場(chang)的(de)(de)(de)粉(fen)(fen)(fen)塵(chen)結合起來(lai),使塵(chen)粒帶電(dian)(dian)(dian)(dian)(dian)(dian),帶電(dian)(dian)(dian)(dian)(dian)(dian)塵(chen)粒在(zai)電(dian)(dian)(dian)(dian)(dian)(dian)場(chang)力(li)的(de)(de)(de)作(zuo)用(yong)下(xia)趨向本設備陽(yang)極(ji)(ji)(ji)(正極(ji)(ji)(ji)、本設備采(cai)用(yong)負高(gao)壓制(zhi))和(he)陰(yin)(yin)極(ji)(ji)(ji)(負極(ji)(ji)(ji)) , 釋(shi)放出(chu)(chu)電(dian)(dian)(dian)(dian)(dian)(dian)子(zi)分別沉(chen)積在(zai)相應的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)上(shang),通(tong)過設備陰(yin)(yin)陽(yang)極(ji)(ji)(ji)振(zhen)打系(xi)統的(de)(de)(de)振(zhen)打,使沉(chen)積在(zai)陰(yin)(yin)陽(yang)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)上(shang)的(de)(de)(de)粉(fen)(fen)(fen)塵(chen)振(zhen)落(luo),進(jin)人(ren)集灰斗 通(tong)過排灰裝(zhuang)置放出(chu)(chu),回收有(you)物料(liao),被)凈(jing)化(hua)的(de)(de)(de)氣(qi)(qi)體(ti)(ti)排入(ru)大(da)氣(qi)(qi)。
工作原理(li)
靜電(dian)(dian)除(chu)塵(chen)(chen)(chen)器的(de)工作原理是利用高(gao)壓電(dian)(dian)場(chang)使煙(yan)氣(qi)發(fa)生電(dian)(dian)離(li),氣(qi)流(liu)中的(de)粉(fen)塵(chen)(chen)(chen)荷電(dian)(dian)在電(dian)(dian)場(chang)作用下與氣(qi)流(liu)分離(li)。負極(ji)由不(bu)同(tong)斷面(mian)形(xing)狀(zhuang)的(de)金(jin)屬導(dao)線制(zhi)成(cheng),叫(jiao)放(fang)電(dian)(dian)電(dian)(dian)極(ji)。正(zheng)極(ji)由不(bu)同(tong)幾何(he)形(xing)狀(zhuang)的(de)金(jin)屬板制(zhi)成(cheng),叫(jiao)集(ji)塵(chen)(chen)(chen)電(dian)(dian)極(ji)。靜電(dian)(dian)除(chu)塵(chen)(chen)(chen)器的(de)性能受粉(fen)塵(chen)(chen)(chen)性質、設備(bei)構造和煙(yan)氣(qi)流(liu)速(su)等三個因素的(de)影響(xiang)。粉(fen)塵(chen)(chen)(chen)的(de)比電(dian)(dian)阻(zu)(zu)是評價導(dao)電(dian)(dian)性的(de)指標,它對除(chu)塵(chen)(chen)(chen)效(xiao)率有直接的(de)影響(xiang)。比電(dian)(dian)阻(zu)(zu)過(guo)低,塵(chen)(chen)(chen)粒難以保持在集(ji)塵(chen)(chen)(chen)電(dian)(dian)極(ji)上,致(zhi)使其(qi)重(zhong)返氣(qi)流(liu)。比電(dian)(dian)阻(zu)(zu)過(guo)高(gao),到達集(ji)塵(chen)(chen)(chen)電(dian)(dian)極(ji)的(de)塵(chen)(chen)(chen)粒電(dian)(dian)荷不(bu)易放(fang)出,在塵(chen)(chen)(chen)層(ceng)之間(jian)形(xing)成(cheng)電(dian)(dian)壓梯度(du)會(hui)產生局部擊穿和放(fang)電(dian)(dian)現(xian)象。這些情況都(dou)會(hui)造成(cheng)除(chu)塵(chen)(chen)(chen)效(xiao)率下降。
電(dian)(dian)除塵(chen)器的(de)(de)基本原理(li)(li)是利用電(dian)(dian)力捕(bu)集煙(yan)氣(qi)中(zhong)的(de)(de)粉(fen)(fen)塵(chen),主要包括以下四個(ge)相互有關的(de)(de)物理(li)(li)過程(cheng): (1) 氣(qi)體的(de)(de)電(dian)(dian)離。(2) 粉(fen)(fen)塵(chen)的(de)(de)荷(he)(he)電(dian)(dian)。(3) 荷(he)(he)電(dian)(dian)粉(fen)(fen)塵(chen)向電(dian)(dian)極移(yi)動(dong)。(4) 荷(he)(he)電(dian)(dian)粉(fen)(fen)塵(chen)的(de)(de)捕(bu)集。