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(shi)以(yi)靜電(dian)(dian)凈(jing)化法來收(shou)捕廢氣(qi)(qi)(qi)(qi)(qi)中的(de)(de)(de)(de)粉塵(chen)(chen),它(ta)的(de)(de)(de)(de)凈(jing)化工作上要是(shi)依靠電(dian)(dian)暈(yun)極和(he)(he)(he)沉淀(dian)兩個系統(tong)來完成的(de)(de)(de)(de),當含塵(chen)(chen)氣(qi)(qi)(qi)(qi)(qi)體(ti)進人(ren)(ren)(ren)(ren)氣(qi)(qi)(qi)(qi)(qi)刺叭時,含塵(chen)(chen)氣(qi)(qi)(qi)(qi)(qi)體(ti)受(shou)到(dao)氣(qi)(qi)(qi)(qi)(qi)流分布(bu)板以(yi)及折(zhe)流板的(de)(de)(de)(de)調整(zheng)后(hou)(hou),使(shi)氣(qi)(qi)(qi)(qi)(qi)流能較(jiao)均(jun)勻(yun)地進人(ren)(ren)(ren)(ren)電(dian)(dian)場(chang)。在(zai)橫斷面擴大的(de)(de)(de)(de)作用下,氣(qi)(qi)(qi)(qi)(qi)流速度(du)迅速降(jiang)低,其(qi)中有(you)些(xie)(xie)較(jiao)重的(de)(de)(de)(de)塵(chen)(chen)粒便失去速度(du)而沉降(jiang)下來。進人(ren)(ren)(ren)(ren)電(dian)(dian)場(chang)的(de)(de)(de)(de)含塵(chen)(chen)氣(qi)(qi)(qi)(qi)(qi)體(ti)由(you)于電(dian)(dian)暈(yun)極通人(ren)(ren)(ren)(ren)高(gao)壓(ya)(ya)直流電(dian)(dian),則在(zai)電(dian)(dian)暈(yun)極附近產(chan)生電(dian)(dian)暈(yun)現象,使(shi)氣(qi)(qi)(qi)(qi)(qi)體(ti)電(dian)(dian)離(li),電(dian)(dian)離(li)后(hou)(hou)的(de)(de)(de)(de)氣(qi)(qi)(qi)(qi)(qi)體(ti)中存在(zai)大量的(de)(de)(de)(de)電(dian)(dian)子(zi)和(he)(he)(he)離(li)子(zi),這些(xie)(xie)電(dian)(dian)子(zi)和(he)(he)(he)離(li)子(zi)與進人(ren)(ren)(ren)(ren)電(dian)(dian)場(chang)的(de)(de)(de)(de)粉塵(chen)(chen)結合起來,使(shi)塵(chen)(chen)粒帶電(dian)(dian),帶電(dian)(dian)塵(chen)(chen)粒在(zai)電(dian)(dian)場(chang)力的(de)(de)(de)(de)作用下趨向本(ben)設備(bei)陽極(正極、本(ben)設備(bei)采用負高(gao)壓(ya)(ya)制(zhi))和(he)(he)(he)陰極(負極) , 釋放出電(dian)(dian)子(zi)分別沉積在(zai)相應的(de)(de)(de)(de)電(dian)(dian)極上,通過設備(bei)陰陽極振打(da)系統(tong)的(de)(de)(de)(de)振打(da),使(shi)沉積在(zai)陰陽電(dian)(dian)極上的(de)(de)(de)(de)粉塵(chen)(chen)振落,進人(ren)(ren)(ren)(ren)集灰斗 通過排灰裝(zhuang)置放出,回收(shou)有(you)物料,被)凈(jing)化的(de)(de)(de)(de)氣(qi)(qi)(qi)(qi)(qi)體(ti)排入大氣(qi)(qi)(qi)(qi)(qi)。
工作原理
靜(jing)電(dian)(dian)(dian)除(chu)塵(chen)器的(de)(de)工作原理是利用(yong)(yong)高壓(ya)電(dian)(dian)(dian)場(chang)使(shi)煙(yan)氣發生電(dian)(dian)(dian)離(li),氣流(liu)中的(de)(de)粉塵(chen)荷(he)電(dian)(dian)(dian)在電(dian)(dian)(dian)場(chang)作用(yong)(yong)下(xia)(xia)與氣流(liu)分離(li)。負(fu)極(ji)(ji)(ji)由(you)不(bu)同斷(duan)面形狀(zhuang)的(de)(de)金屬(shu)導(dao)線制成(cheng),叫放電(dian)(dian)(dian)電(dian)(dian)(dian)極(ji)(ji)(ji)。正(zheng)極(ji)(ji)(ji)由(you)不(bu)同幾何形狀(zhuang)的(de)(de)金屬(shu)板制成(cheng),叫集塵(chen)電(dian)(dian)(dian)極(ji)(ji)(ji)。靜(jing)電(dian)(dian)(dian)除(chu)塵(chen)器的(de)(de)性能受粉塵(chen)性質、設備(bei)構造和(he)煙(yan)氣流(liu)速等(deng)三個(ge)因素的(de)(de)影(ying)響。粉塵(chen)的(de)(de)比電(dian)(dian)(dian)阻是評價導(dao)電(dian)(dian)(dian)性的(de)(de)指標(biao),它對除(chu)塵(chen)效(xiao)率(lv)有直(zhi)接的(de)(de)影(ying)響。比電(dian)(dian)(dian)阻過低,塵(chen)粒難以保持在集塵(chen)電(dian)(dian)(dian)極(ji)(ji)(ji)上(shang),致使(shi)其重返氣流(liu)。比電(dian)(dian)(dian)阻過高,到(dao)達集塵(chen)電(dian)(dian)(dian)極(ji)(ji)(ji)的(de)(de)塵(chen)粒電(dian)(dian)(dian)荷(he)不(bu)易放出,在塵(chen)層之間形成(cheng)電(dian)(dian)(dian)壓(ya)梯度會產生局部擊穿和(he)放電(dian)(dian)(dian)現(xian)象。這些情(qing)況都會造成(cheng)除(chu)塵(chen)效(xiao)率(lv)下(xia)(xia)降。
電除塵器的(de)基本原理是利(li)用(yong)電力捕集煙(yan)氣中的(de)粉塵,主要包括以下(xia)四個相(xiang)互(hu)有關的(de)物理過程: (1) 氣體的(de)電離。(2) 粉塵的(de)荷電。(3) 荷電粉塵向電極(ji)移(yi)動。(4) 荷電粉塵的(de)捕集。