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)除(chu)塵(chen)器(qi)是以(yi)靜電(dian)(dian)(dian)(dian)凈化(hua)法來(lai)收(shou)(shou)捕廢(fei)氣(qi)(qi)(qi)中(zhong)的(de)(de)(de)(de)(de)(de)粉(fen)塵(chen),它的(de)(de)(de)(de)(de)(de)凈化(hua)工作(zuo)上(shang)(shang)要是依靠電(dian)(dian)(dian)(dian)暈(yun)極(ji)(ji)(ji)和沉(chen)(chen)淀兩個(ge)系統來(lai)完成的(de)(de)(de)(de)(de)(de),當含塵(chen)氣(qi)(qi)(qi)體(ti)(ti)(ti)進(jin)(jin)(jin)(jin)人(ren)(ren)氣(qi)(qi)(qi)刺叭(ba)時,含塵(chen)氣(qi)(qi)(qi)體(ti)(ti)(ti)受到(dao)氣(qi)(qi)(qi)流分布板以(yi)及折流板的(de)(de)(de)(de)(de)(de)調(diao)整后,使(shi)氣(qi)(qi)(qi)流能較均(jun)勻地(di)進(jin)(jin)(jin)(jin)人(ren)(ren)電(dian)(dian)(dian)(dian)場(chang)(chang)。在(zai)(zai)(zai)橫斷面擴大的(de)(de)(de)(de)(de)(de)作(zuo)用下(xia),氣(qi)(qi)(qi)流速(su)度迅速(su)降低,其中(zhong)有些較重的(de)(de)(de)(de)(de)(de)塵(chen)粒(li)(li)便失(shi)去速(su)度而沉(chen)(chen)降下(xia)來(lai)。進(jin)(jin)(jin)(jin)人(ren)(ren)電(dian)(dian)(dian)(dian)場(chang)(chang)的(de)(de)(de)(de)(de)(de)含塵(chen)氣(qi)(qi)(qi)體(ti)(ti)(ti)由于(yu)電(dian)(dian)(dian)(dian)暈(yun)極(ji)(ji)(ji)通人(ren)(ren)高壓直流電(dian)(dian)(dian)(dian),則在(zai)(zai)(zai)電(dian)(dian)(dian)(dian)暈(yun)極(ji)(ji)(ji)附近產生電(dian)(dian)(dian)(dian)暈(yun)現象(xiang),使(shi)氣(qi)(qi)(qi)體(ti)(ti)(ti)電(dian)(dian)(dian)(dian)離,電(dian)(dian)(dian)(dian)離后的(de)(de)(de)(de)(de)(de)氣(qi)(qi)(qi)體(ti)(ti)(ti)中(zhong)存在(zai)(zai)(zai)大量的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)子(zi)和離子(zi),這些電(dian)(dian)(dian)(dian)子(zi)和離子(zi)與(yu)進(jin)(jin)(jin)(jin)人(ren)(ren)電(dian)(dian)(dian)(dian)場(chang)(chang)的(de)(de)(de)(de)(de)(de)粉(fen)塵(chen)結(jie)合(he)起來(lai),使(shi)塵(chen)粒(li)(li)帶電(dian)(dian)(dian)(dian),帶電(dian)(dian)(dian)(dian)塵(chen)粒(li)(li)在(zai)(zai)(zai)電(dian)(dian)(dian)(dian)場(chang)(chang)力的(de)(de)(de)(de)(de)(de)作(zuo)用下(xia)趨(qu)向本(ben)設備陽(yang)(yang)極(ji)(ji)(ji)(正(zheng)極(ji)(ji)(ji)、本(ben)設備采(cai)用負(fu)高壓制)和陰(yin)極(ji)(ji)(ji)(負(fu)極(ji)(ji)(ji)) , 釋放(fang)出電(dian)(dian)(dian)(dian)子(zi)分別(bie)沉(chen)(chen)積在(zai)(zai)(zai)相應的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)極(ji)(ji)(ji)上(shang)(shang),通過設備陰(yin)陽(yang)(yang)極(ji)(ji)(ji)振打系統的(de)(de)(de)(de)(de)(de)振打,使(shi)沉(chen)(chen)積在(zai)(zai)(zai)陰(yin)陽(yang)(yang)電(dian)(dian)(dian)(dian)極(ji)(ji)(ji)上(shang)(shang)的(de)(de)(de)(de)(de)(de)粉(fen)塵(chen)振落,進(jin)(jin)(jin)(jin)人(ren)(ren)集(ji)灰(hui)斗 通過排(pai)灰(hui)裝置放(fang)出,回收(shou)(shou)有物(wu)料,被)凈化(hua)的(de)(de)(de)(de)(de)(de)氣(qi)(qi)(qi)體(ti)(ti)(ti)排(pai)入(ru)大氣(qi)(qi)(qi)。
工作原(yuan)理(li)
靜電(dian)(dian)(dian)(dian)(dian)除塵(chen)器(qi)(qi)的(de)工作原理是(shi)利用(yong)高(gao)壓電(dian)(dian)(dian)(dian)(dian)場(chang)使(shi)煙(yan)氣(qi)(qi)發生電(dian)(dian)(dian)(dian)(dian)離(li),氣(qi)(qi)流中的(de)粉塵(chen)荷(he)電(dian)(dian)(dian)(dian)(dian)在電(dian)(dian)(dian)(dian)(dian)場(chang)作用(yong)下(xia)與(yu)氣(qi)(qi)流分離(li)。負極(ji)由(you)不同(tong)(tong)斷面形狀(zhuang)的(de)金屬導線制(zhi)成,叫(jiao)放電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)極(ji)。正極(ji)由(you)不同(tong)(tong)幾(ji)何形狀(zhuang)的(de)金屬板制(zhi)成,叫(jiao)集(ji)塵(chen)電(dian)(dian)(dian)(dian)(dian)極(ji)。靜電(dian)(dian)(dian)(dian)(dian)除塵(chen)器(qi)(qi)的(de)性(xing)能受粉塵(chen)性(xing)質(zhi)、設(she)備(bei)構造(zao)和(he)煙(yan)氣(qi)(qi)流速等三個因素的(de)影響。粉塵(chen)的(de)比(bi)電(dian)(dian)(dian)(dian)(dian)阻是(shi)評價導電(dian)(dian)(dian)(dian)(dian)性(xing)的(de)指標,它對除塵(chen)效(xiao)率有直接的(de)影響。比(bi)電(dian)(dian)(dian)(dian)(dian)阻過低,塵(chen)粒(li)難以保持在集(ji)塵(chen)電(dian)(dian)(dian)(dian)(dian)極(ji)上,致使(shi)其重返氣(qi)(qi)流。比(bi)電(dian)(dian)(dian)(dian)(dian)阻過高(gao),到(dao)達集(ji)塵(chen)電(dian)(dian)(dian)(dian)(dian)極(ji)的(de)塵(chen)粒(li)電(dian)(dian)(dian)(dian)(dian)荷(he)不易放出(chu),在塵(chen)層(ceng)之間形成電(dian)(dian)(dian)(dian)(dian)壓梯(ti)度會產生局(ju)部擊穿和(he)放電(dian)(dian)(dian)(dian)(dian)現象。這些情況(kuang)都會造(zao)成除塵(chen)效(xiao)率下(xia)降。
電(dian)(dian)除塵(chen)器(qi)的(de)基本(ben)原理是利用電(dian)(dian)力捕(bu)集煙氣中的(de)粉(fen)塵(chen),主要包括以(yi)下四個相互有(you)關的(de)物理過程: (1) 氣體(ti)的(de)電(dian)(dian)離(li)。(2) 粉(fen)塵(chen)的(de)荷電(dian)(dian)。(3) 荷電(dian)(dian)粉(fen)塵(chen)向電(dian)(dian)極移動。(4) 荷電(dian)(dian)粉(fen)塵(chen)的(de)捕(bu)集。