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(wo)式靜電(dian)(dian)(dian)(dian)(dian)除塵(chen)(chen)(chen)器是以靜電(dian)(dian)(dian)(dian)(dian)凈(jing)化法來收捕(bu)廢(fei)氣(qi)(qi)中(zhong)的(de)(de)(de)(de)粉(fen)塵(chen)(chen)(chen),它的(de)(de)(de)(de)凈(jing)化工(gong)作(zuo)上(shang)要是依(yi)靠電(dian)(dian)(dian)(dian)(dian)暈極(ji)和(he)沉(chen)淀(dian)兩(liang)個系統(tong)來完成的(de)(de)(de)(de),當含塵(chen)(chen)(chen)氣(qi)(qi)體(ti)(ti)進(jin)人氣(qi)(qi)刺叭時(shi),含塵(chen)(chen)(chen)氣(qi)(qi)體(ti)(ti)受到氣(qi)(qi)流分布板(ban)以及(ji)折流板(ban)的(de)(de)(de)(de)調整(zheng)后(hou),使氣(qi)(qi)流能較均(jun)勻地(di)進(jin)人電(dian)(dian)(dian)(dian)(dian)場。在(zai)(zai)(zai)橫斷面擴大(da)的(de)(de)(de)(de)作(zuo)用(yong)下(xia),氣(qi)(qi)流速度迅速降(jiang)低,其中(zhong)有些較重的(de)(de)(de)(de)塵(chen)(chen)(chen)粒便(bian)失去速度而沉(chen)降(jiang)下(xia)來。進(jin)人電(dian)(dian)(dian)(dian)(dian)場的(de)(de)(de)(de)含塵(chen)(chen)(chen)氣(qi)(qi)體(ti)(ti)由于電(dian)(dian)(dian)(dian)(dian)暈極(ji)通(tong)人高壓直流電(dian)(dian)(dian)(dian)(dian),則在(zai)(zai)(zai)電(dian)(dian)(dian)(dian)(dian)暈極(ji)附近產(chan)生電(dian)(dian)(dian)(dian)(dian)暈現象(xiang),使氣(qi)(qi)體(ti)(ti)電(dian)(dian)(dian)(dian)(dian)離(li)(li),電(dian)(dian)(dian)(dian)(dian)離(li)(li)后(hou)的(de)(de)(de)(de)氣(qi)(qi)體(ti)(ti)中(zhong)存在(zai)(zai)(zai)大(da)量(liang)的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)子(zi)和(he)離(li)(li)子(zi),這(zhe)些電(dian)(dian)(dian)(dian)(dian)子(zi)和(he)離(li)(li)子(zi)與進(jin)人電(dian)(dian)(dian)(dian)(dian)場的(de)(de)(de)(de)粉(fen)塵(chen)(chen)(chen)結合起來,使塵(chen)(chen)(chen)粒帶(dai)(dai)電(dian)(dian)(dian)(dian)(dian),帶(dai)(dai)電(dian)(dian)(dian)(dian)(dian)塵(chen)(chen)(chen)粒在(zai)(zai)(zai)電(dian)(dian)(dian)(dian)(dian)場力(li)的(de)(de)(de)(de)作(zuo)用(yong)下(xia)趨向本(ben)設(she)備(bei)陽(yang)(yang)極(ji)(正極(ji)、本(ben)設(she)備(bei)采用(yong)負(fu)高壓制(zhi))和(he)陰極(ji)(負(fu)極(ji)) , 釋放出電(dian)(dian)(dian)(dian)(dian)子(zi)分別沉(chen)積在(zai)(zai)(zai)相應的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)極(ji)上(shang),通(tong)過設(she)備(bei)陰陽(yang)(yang)極(ji)振打系統(tong)的(de)(de)(de)(de)振打,使沉(chen)積在(zai)(zai)(zai)陰陽(yang)(yang)電(dian)(dian)(dian)(dian)(dian)極(ji)上(shang)的(de)(de)(de)(de)粉(fen)塵(chen)(chen)(chen)振落,進(jin)人集灰斗 通(tong)過排灰裝(zhuang)置放出,回收有物料,被)凈(jing)化的(de)(de)(de)(de)氣(qi)(qi)體(ti)(ti)排入大(da)氣(qi)(qi)。
工作原理
靜(jing)電(dian)(dian)除塵(chen)(chen)(chen)(chen)器的(de)(de)工作原理是(shi)利用高壓電(dian)(dian)場使煙氣(qi)(qi)發生(sheng)電(dian)(dian)離(li),氣(qi)(qi)流中的(de)(de)粉(fen)塵(chen)(chen)(chen)(chen)荷電(dian)(dian)在電(dian)(dian)場作用下與氣(qi)(qi)流分離(li)。負(fu)極由不同(tong)斷(duan)面形狀的(de)(de)金屬(shu)導(dao)(dao)線制成,叫放電(dian)(dian)電(dian)(dian)極。正極由不同(tong)幾何形狀的(de)(de)金屬(shu)板制成,叫集塵(chen)(chen)(chen)(chen)電(dian)(dian)極。靜(jing)電(dian)(dian)除塵(chen)(chen)(chen)(chen)器的(de)(de)性能(neng)受粉(fen)塵(chen)(chen)(chen)(chen)性質、設備構造和(he)煙氣(qi)(qi)流速等三(san)個因素的(de)(de)影響(xiang)。粉(fen)塵(chen)(chen)(chen)(chen)的(de)(de)比電(dian)(dian)阻(zu)是(shi)評價導(dao)(dao)電(dian)(dian)性的(de)(de)指標,它對除塵(chen)(chen)(chen)(chen)效率(lv)有(you)直接(jie)的(de)(de)影響(xiang)。比電(dian)(dian)阻(zu)過(guo)低,塵(chen)(chen)(chen)(chen)粒(li)難以保持(chi)在集塵(chen)(chen)(chen)(chen)電(dian)(dian)極上,致使其重返氣(qi)(qi)流。比電(dian)(dian)阻(zu)過(guo)高,到(dao)達集塵(chen)(chen)(chen)(chen)電(dian)(dian)極的(de)(de)塵(chen)(chen)(chen)(chen)粒(li)電(dian)(dian)荷不易放出(chu),在塵(chen)(chen)(chen)(chen)層之間形成電(dian)(dian)壓梯度(du)會(hui)產生(sheng)局部擊穿和(he)放電(dian)(dian)現象。這些(xie)情(qing)況都會(hui)造成除塵(chen)(chen)(chen)(chen)效率(lv)下降(jiang)。
電(dian)(dian)除塵(chen)器的(de)基本原理是利用電(dian)(dian)力捕(bu)集煙氣(qi)中的(de)粉(fen)塵(chen),主要包括以下四個相互有關的(de)物理過(guo)程(cheng): (1) 氣(qi)體的(de)電(dian)(dian)離。(2) 粉(fen)塵(chen)的(de)荷(he)(he)電(dian)(dian)。(3) 荷(he)(he)電(dian)(dian)粉(fen)塵(chen)向(xiang)電(dian)(dian)極(ji)移(yi)動(dong)。(4) 荷(he)(he)電(dian)(dian)粉(fen)塵(chen)的(de)捕(bu)集。