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)(dian)(dian)(dian)(dian)除塵(chen)(chen)(chen)器是以(yi)靜電(dian)(dian)(dian)(dian)(dian)(dian)凈化(hua)法來(lai)(lai)收捕(bu)廢(fei)氣(qi)(qi)中的(de)(de)(de)粉塵(chen)(chen)(chen),它的(de)(de)(de)凈化(hua)工作上(shang)要是依(yi)靠電(dian)(dian)(dian)(dian)(dian)(dian)暈極(ji)(ji)(ji)(ji)和沉(chen)(chen)淀(dian)兩個(ge)系統來(lai)(lai)完成的(de)(de)(de),當含(han)塵(chen)(chen)(chen)氣(qi)(qi)體進(jin)人(ren)氣(qi)(qi)刺(ci)叭時,含(han)塵(chen)(chen)(chen)氣(qi)(qi)體受(shou)到(dao)氣(qi)(qi)流分布板以(yi)及(ji)折(zhe)流板的(de)(de)(de)調整后,使氣(qi)(qi)流能較均勻地進(jin)人(ren)電(dian)(dian)(dian)(dian)(dian)(dian)場(chang)。在(zai)橫(heng)斷(duan)面擴大(da)的(de)(de)(de)作用下,氣(qi)(qi)流速度迅速降低,其中有些較重的(de)(de)(de)塵(chen)(chen)(chen)粒便(bian)失去速度而沉(chen)(chen)降下來(lai)(lai)。進(jin)人(ren)電(dian)(dian)(dian)(dian)(dian)(dian)場(chang)的(de)(de)(de)含(han)塵(chen)(chen)(chen)氣(qi)(qi)體由(you)于電(dian)(dian)(dian)(dian)(dian)(dian)暈極(ji)(ji)(ji)(ji)通(tong)人(ren)高壓直流電(dian)(dian)(dian)(dian)(dian)(dian),則在(zai)電(dian)(dian)(dian)(dian)(dian)(dian)暈極(ji)(ji)(ji)(ji)附近產生電(dian)(dian)(dian)(dian)(dian)(dian)暈現(xian)象,使氣(qi)(qi)體電(dian)(dian)(dian)(dian)(dian)(dian)離(li)(li),電(dian)(dian)(dian)(dian)(dian)(dian)離(li)(li)后的(de)(de)(de)氣(qi)(qi)體中存(cun)在(zai)大(da)量的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)子(zi)和離(li)(li)子(zi),這些電(dian)(dian)(dian)(dian)(dian)(dian)子(zi)和離(li)(li)子(zi)與進(jin)人(ren)電(dian)(dian)(dian)(dian)(dian)(dian)場(chang)的(de)(de)(de)粉塵(chen)(chen)(chen)結合起來(lai)(lai),使塵(chen)(chen)(chen)粒帶電(dian)(dian)(dian)(dian)(dian)(dian),帶電(dian)(dian)(dian)(dian)(dian)(dian)塵(chen)(chen)(chen)粒在(zai)電(dian)(dian)(dian)(dian)(dian)(dian)場(chang)力(li)的(de)(de)(de)作用下趨向(xiang)本設備(bei)陽(yang)極(ji)(ji)(ji)(ji)(正(zheng)極(ji)(ji)(ji)(ji)、本設備(bei)采用負(fu)高壓制(zhi))和陰(yin)(yin)極(ji)(ji)(ji)(ji)(負(fu)極(ji)(ji)(ji)(ji)) , 釋(shi)放(fang)出(chu)電(dian)(dian)(dian)(dian)(dian)(dian)子(zi)分別沉(chen)(chen)積在(zai)相應的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)(ji)上(shang),通(tong)過設備(bei)陰(yin)(yin)陽(yang)極(ji)(ji)(ji)(ji)振打系統的(de)(de)(de)振打,使沉(chen)(chen)積在(zai)陰(yin)(yin)陽(yang)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)(ji)上(shang)的(de)(de)(de)粉塵(chen)(chen)(chen)振落(luo),進(jin)人(ren)集灰斗(dou) 通(tong)過排(pai)灰裝置(zhi)放(fang)出(chu),回收有物料,被)凈化(hua)的(de)(de)(de)氣(qi)(qi)體排(pai)入大(da)氣(qi)(qi)。
工作原理(li)
靜(jing)電(dian)(dian)(dian)(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)器的(de)工(gong)作原理是利用高(gao)壓電(dian)(dian)(dian)(dian)(dian)(dian)場(chang)使煙氣(qi)(qi)發生(sheng)電(dian)(dian)(dian)(dian)(dian)(dian)離,氣(qi)(qi)流(liu)(liu)中的(de)粉(fen)(fen)塵(chen)(chen)(chen)荷電(dian)(dian)(dian)(dian)(dian)(dian)在電(dian)(dian)(dian)(dian)(dian)(dian)場(chang)作用下(xia)與(yu)氣(qi)(qi)流(liu)(liu)分(fen)離。負極(ji)由不(bu)同(tong)斷面(mian)形(xing)(xing)狀的(de)金屬導(dao)線制成,叫(jiao)放(fang)電(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)。正極(ji)由不(bu)同(tong)幾何形(xing)(xing)狀的(de)金屬板制成,叫(jiao)集(ji)塵(chen)(chen)(chen)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)。靜(jing)電(dian)(dian)(dian)(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)器的(de)性能受粉(fen)(fen)塵(chen)(chen)(chen)性質、設備構造(zao)和煙氣(qi)(qi)流(liu)(liu)速等三個因素的(de)影響。粉(fen)(fen)塵(chen)(chen)(chen)的(de)比(bi)電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)是評價導(dao)電(dian)(dian)(dian)(dian)(dian)(dian)性的(de)指標(biao),它對(dui)除(chu)塵(chen)(chen)(chen)效率有直接的(de)影響。比(bi)電(dian)(dian)(dian)(dian)(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)(dian)(dian)(dian)(dian)極(ji)上,致(zhi)使其(qi)重返氣(qi)(qi)流(liu)(liu)。比(bi)電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)過高(gao),到達集(ji)塵(chen)(chen)(chen)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)的(de)塵(chen)(chen)(chen)粒電(dian)(dian)(dian)(dian)(dian)(dian)荷不(bu)易放(fang)出,在塵(chen)(chen)(chen)層之間形(xing)(xing)成電(dian)(dian)(dian)(dian)(dian)(dian)壓梯度會產生(sheng)局部(bu)擊穿和放(fang)電(dian)(dian)(dian)(dian)(dian)(dian)現象。這些情況都會造(zao)成除(chu)塵(chen)(chen)(chen)效率下(xia)降(jiang)。
電(dian)(dian)(dian)除塵(chen)器(qi)的(de)基本原理是利(li)用電(dian)(dian)(dian)力(li)捕(bu)集煙氣中的(de)粉(fen)(fen)(fen)塵(chen),主(zhu)要(yao)包括以下四個相互有關(guan)的(de)物(wu)理過(guo)程: (1) 氣體(ti)的(de)電(dian)(dian)(dian)離(li)。(2) 粉(fen)(fen)(fen)塵(chen)的(de)荷電(dian)(dian)(dian)。(3) 荷電(dian)(dian)(dian)粉(fen)(fen)(fen)塵(chen)向電(dian)(dian)(dian)極移動。(4) 荷電(dian)(dian)(dian)粉(fen)(fen)(fen)塵(chen)的(de)捕(bu)集。