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)除塵(chen)器是以靜電(dian)(dian)(dian)(dian)(dian)凈化法來收捕廢氣(qi)(qi)(qi)(qi)中的(de)(de)粉塵(chen),它的(de)(de)凈化工作(zuo)上(shang)要是依靠電(dian)(dian)(dian)(dian)(dian)暈極(ji)和沉(chen)(chen)淀兩個系統(tong)來完成的(de)(de),當含塵(chen)氣(qi)(qi)(qi)(qi)體(ti)(ti)進(jin)人(ren)氣(qi)(qi)(qi)(qi)刺(ci)叭時,含塵(chen)氣(qi)(qi)(qi)(qi)體(ti)(ti)受到氣(qi)(qi)(qi)(qi)流(liu)分布板(ban)以及折流(liu)板(ban)的(de)(de)調整后,使(shi)氣(qi)(qi)(qi)(qi)流(liu)能較(jiao)(jiao)均(jun)勻地進(jin)人(ren)電(dian)(dian)(dian)(dian)(dian)場(chang)。在橫斷(duan)面擴大的(de)(de)作(zuo)用(yong)(yong)下,氣(qi)(qi)(qi)(qi)流(liu)速度迅(xun)速降低,其(qi)中有些較(jiao)(jiao)重的(de)(de)塵(chen)粒(li)便失(shi)去(qu)速度而(er)沉(chen)(chen)降下來。進(jin)人(ren)電(dian)(dian)(dian)(dian)(dian)場(chang)的(de)(de)含塵(chen)氣(qi)(qi)(qi)(qi)體(ti)(ti)由于電(dian)(dian)(dian)(dian)(dian)暈極(ji)通(tong)人(ren)高(gao)壓直流(liu)電(dian)(dian)(dian)(dian)(dian),則在電(dian)(dian)(dian)(dian)(dian)暈極(ji)附近(jin)產生電(dian)(dian)(dian)(dian)(dian)暈現(xian)象,使(shi)氣(qi)(qi)(qi)(qi)體(ti)(ti)電(dian)(dian)(dian)(dian)(dian)離(li)(li)(li)(li),電(dian)(dian)(dian)(dian)(dian)離(li)(li)(li)(li)后的(de)(de)氣(qi)(qi)(qi)(qi)體(ti)(ti)中存在大量的(de)(de)電(dian)(dian)(dian)(dian)(dian)子(zi)(zi)和離(li)(li)(li)(li)子(zi)(zi),這些電(dian)(dian)(dian)(dian)(dian)子(zi)(zi)和離(li)(li)(li)(li)子(zi)(zi)與進(jin)人(ren)電(dian)(dian)(dian)(dian)(dian)場(chang)的(de)(de)粉塵(chen)結(jie)合起來,使(shi)塵(chen)粒(li)帶電(dian)(dian)(dian)(dian)(dian),帶電(dian)(dian)(dian)(dian)(dian)塵(chen)粒(li)在電(dian)(dian)(dian)(dian)(dian)場(chang)力的(de)(de)作(zuo)用(yong)(yong)下趨(qu)向本設備(bei)陽(yang)(yang)極(ji)(正極(ji)、本設備(bei)采(cai)用(yong)(yong)負(fu)高(gao)壓制)和陰(yin)(yin)(yin)極(ji)(負(fu)極(ji)) , 釋放出電(dian)(dian)(dian)(dian)(dian)子(zi)(zi)分別(bie)沉(chen)(chen)積(ji)在相應的(de)(de)電(dian)(dian)(dian)(dian)(dian)極(ji)上(shang),通(tong)過設備(bei)陰(yin)(yin)(yin)陽(yang)(yang)極(ji)振(zhen)打系統(tong)的(de)(de)振(zhen)打,使(shi)沉(chen)(chen)積(ji)在陰(yin)(yin)(yin)陽(yang)(yang)電(dian)(dian)(dian)(dian)(dian)極(ji)上(shang)的(de)(de)粉塵(chen)振(zhen)落,進(jin)人(ren)集(ji)灰(hui)斗 通(tong)過排灰(hui)裝(zhuang)置放出,回(hui)收有物料,被)凈化的(de)(de)氣(qi)(qi)(qi)(qi)體(ti)(ti)排入大氣(qi)(qi)(qi)(qi)。
工作原(yuan)理
靜(jing)電(dian)除(chu)塵(chen)器的(de)工作原理是(shi)利用(yong)高壓(ya)電(dian)場(chang)使(shi)煙氣發生電(dian)離,氣流(liu)中的(de)粉(fen)塵(chen)荷(he)電(dian)在電(dian)場(chang)作用(yong)下與氣流(liu)分離。負極(ji)由(you)不同斷面形狀的(de)金屬導線制(zhi)成,叫放(fang)電(dian)電(dian)極(ji)。正極(ji)由(you)不同幾何(he)形狀的(de)金屬板制(zhi)成,叫集(ji)塵(chen)電(dian)極(ji)。靜(jing)電(dian)除(chu)塵(chen)器的(de)性(xing)能(neng)受粉(fen)塵(chen)性(xing)質、設備構造(zao)和(he)煙氣流(liu)速(su)等三個(ge)因素(su)的(de)影(ying)響(xiang)。粉(fen)塵(chen)的(de)比電(dian)阻(zu)是(shi)評價導電(dian)性(xing)的(de)指標(biao),它對(dui)除(chu)塵(chen)效率(lv)有直接的(de)影(ying)響(xiang)。比電(dian)阻(zu)過(guo)低,塵(chen)粒(li)難以(yi)保持(chi)在集(ji)塵(chen)電(dian)極(ji)上,致(zhi)使(shi)其重返氣流(liu)。比電(dian)阻(zu)過(guo)高,到(dao)達集(ji)塵(chen)電(dian)極(ji)的(de)塵(chen)粒(li)電(dian)荷(he)不易放(fang)出,在塵(chen)層之(zhi)間形成電(dian)壓(ya)梯度(du)會產生局部擊穿和(he)放(fang)電(dian)現(xian)象。這些情況都會造(zao)成除(chu)塵(chen)效率(lv)下降。
電除塵(chen)(chen)器的(de)(de)(de)基本原理是(shi)利用電力捕集煙氣(qi)中的(de)(de)(de)粉塵(chen)(chen),主要包括以(yi)下四(si)個相互有(you)關的(de)(de)(de)物理過程(cheng): (1) 氣(qi)體(ti)的(de)(de)(de)電離。(2) 粉塵(chen)(chen)的(de)(de)(de)荷電。(3) 荷電粉塵(chen)(chen)向電極(ji)移(yi)動。(4) 荷電粉塵(chen)(chen)的(de)(de)(de)捕集。