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(jing)電(dian)(dian)(dian)(dian)(dian)除塵(chen)(chen)器是(shi)以靜(jing)電(dian)(dian)(dian)(dian)(dian)凈化(hua)法來收(shou)捕(bu)廢氣(qi)(qi)中的(de)(de)粉塵(chen)(chen),它的(de)(de)凈化(hua)工作上要是(shi)依靠電(dian)(dian)(dian)(dian)(dian)暈(yun)極(ji)(ji)和(he)沉淀兩個系統來完(wan)成的(de)(de),當含塵(chen)(chen)氣(qi)(qi)體(ti)(ti)(ti)進(jin)(jin)人(ren)(ren)氣(qi)(qi)刺(ci)叭時,含塵(chen)(chen)氣(qi)(qi)體(ti)(ti)(ti)受到氣(qi)(qi)流(liu)(liu)分布板以及折流(liu)(liu)板的(de)(de)調(diao)整后(hou),使氣(qi)(qi)流(liu)(liu)能(neng)較均勻地(di)進(jin)(jin)人(ren)(ren)電(dian)(dian)(dian)(dian)(dian)場(chang)。在(zai)(zai)橫斷面擴大的(de)(de)作用(yong)(yong)下(xia),氣(qi)(qi)流(liu)(liu)速度迅速降低,其中有些較重的(de)(de)塵(chen)(chen)粒便失(shi)去速度而沉降下(xia)來。進(jin)(jin)人(ren)(ren)電(dian)(dian)(dian)(dian)(dian)場(chang)的(de)(de)含塵(chen)(chen)氣(qi)(qi)體(ti)(ti)(ti)由于電(dian)(dian)(dian)(dian)(dian)暈(yun)極(ji)(ji)通(tong)人(ren)(ren)高(gao)壓直流(liu)(liu)電(dian)(dian)(dian)(dian)(dian),則在(zai)(zai)電(dian)(dian)(dian)(dian)(dian)暈(yun)極(ji)(ji)附近(jin)產生電(dian)(dian)(dian)(dian)(dian)暈(yun)現(xian)象,使氣(qi)(qi)體(ti)(ti)(ti)電(dian)(dian)(dian)(dian)(dian)離(li),電(dian)(dian)(dian)(dian)(dian)離(li)后(hou)的(de)(de)氣(qi)(qi)體(ti)(ti)(ti)中存在(zai)(zai)大量(liang)的(de)(de)電(dian)(dian)(dian)(dian)(dian)子(zi)和(he)離(li)子(zi),這些電(dian)(dian)(dian)(dian)(dian)子(zi)和(he)離(li)子(zi)與進(jin)(jin)人(ren)(ren)電(dian)(dian)(dian)(dian)(dian)場(chang)的(de)(de)粉塵(chen)(chen)結合起來,使塵(chen)(chen)粒帶(dai)電(dian)(dian)(dian)(dian)(dian),帶(dai)電(dian)(dian)(dian)(dian)(dian)塵(chen)(chen)粒在(zai)(zai)電(dian)(dian)(dian)(dian)(dian)場(chang)力的(de)(de)作用(yong)(yong)下(xia)趨向本設備陽(yang)(yang)極(ji)(ji)(正極(ji)(ji)、本設備采用(yong)(yong)負高(gao)壓制)和(he)陰極(ji)(ji)(負極(ji)(ji)) , 釋(shi)放出(chu)電(dian)(dian)(dian)(dian)(dian)子(zi)分別沉積在(zai)(zai)相應的(de)(de)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)上,通(tong)過(guo)設備陰陽(yang)(yang)極(ji)(ji)振(zhen)打系統的(de)(de)振(zhen)打,使沉積在(zai)(zai)陰陽(yang)(yang)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)上的(de)(de)粉塵(chen)(chen)振(zhen)落(luo),進(jin)(jin)人(ren)(ren)集灰斗 通(tong)過(guo)排(pai)灰裝置放出(chu),回收(shou)有物(wu)料(liao),被)凈化(hua)的(de)(de)氣(qi)(qi)體(ti)(ti)(ti)排(pai)入大氣(qi)(qi)。
工作原理
靜電(dian)(dian)(dian)(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)(chen)(chen)器(qi)的(de)(de)工作(zuo)(zuo)原(yuan)理(li)是利用高(gao)壓電(dian)(dian)(dian)(dian)(dian)(dian)場使(shi)煙氣(qi)發生電(dian)(dian)(dian)(dian)(dian)(dian)離,氣(qi)流(liu)中的(de)(de)粉(fen)塵(chen)(chen)(chen)(chen)(chen)荷電(dian)(dian)(dian)(dian)(dian)(dian)在電(dian)(dian)(dian)(dian)(dian)(dian)場作(zuo)(zuo)用下與(yu)氣(qi)流(liu)分離。負極由(you)不(bu)同(tong)斷面形狀的(de)(de)金屬導線制成(cheng)(cheng)(cheng),叫(jiao)(jiao)放(fang)電(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)極。正(zheng)極由(you)不(bu)同(tong)幾何(he)形狀的(de)(de)金屬板制成(cheng)(cheng)(cheng),叫(jiao)(jiao)集塵(chen)(chen)(chen)(chen)(chen)電(dian)(dian)(dian)(dian)(dian)(dian)極。靜電(dian)(dian)(dian)(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)(chen)(chen)器(qi)的(de)(de)性(xing)(xing)能受(shou)粉(fen)塵(chen)(chen)(chen)(chen)(chen)性(xing)(xing)質、設備(bei)構造和(he)煙氣(qi)流(liu)速等(deng)三個因素的(de)(de)影(ying)響(xiang)。粉(fen)塵(chen)(chen)(chen)(chen)(chen)的(de)(de)比(bi)(bi)電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)是評價(jia)導電(dian)(dian)(dian)(dian)(dian)(dian)性(xing)(xing)的(de)(de)指標,它對(dui)除(chu)塵(chen)(chen)(chen)(chen)(chen)效(xiao)率有直接的(de)(de)影(ying)響(xiang)。比(bi)(bi)電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)過低,塵(chen)(chen)(chen)(chen)(chen)粒難以保持在集塵(chen)(chen)(chen)(chen)(chen)電(dian)(dian)(dian)(dian)(dian)(dian)極上,致使(shi)其(qi)重返氣(qi)流(liu)。比(bi)(bi)電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)過高(gao),到達集塵(chen)(chen)(chen)(chen)(chen)電(dian)(dian)(dian)(dian)(dian)(dian)極的(de)(de)塵(chen)(chen)(chen)(chen)(chen)粒電(dian)(dian)(dian)(dian)(dian)(dian)荷不(bu)易放(fang)出,在塵(chen)(chen)(chen)(chen)(chen)層之(zhi)間形成(cheng)(cheng)(cheng)電(dian)(dian)(dian)(dian)(dian)(dian)壓梯度會產生局部擊穿和(he)放(fang)電(dian)(dian)(dian)(dian)(dian)(dian)現象(xiang)。這(zhe)些情況(kuang)都會造成(cheng)(cheng)(cheng)除(chu)塵(chen)(chen)(chen)(chen)(chen)效(xiao)率下降。
電(dian)(dian)除塵(chen)(chen)器(qi)的(de)(de)(de)基(ji)本原理(li)是利用電(dian)(dian)力捕(bu)集煙(yan)氣中的(de)(de)(de)粉塵(chen)(chen),主要包括以下四個相(xiang)互有(you)關的(de)(de)(de)物理(li)過程: (1) 氣體的(de)(de)(de)電(dian)(dian)離。(2) 粉塵(chen)(chen)的(de)(de)(de)荷(he)(he)電(dian)(dian)。(3) 荷(he)(he)電(dian)(dian)粉塵(chen)(chen)向電(dian)(dian)極移動。(4) 荷(he)(he)電(dian)(dian)粉塵(chen)(chen)的(de)(de)(de)捕(bu)集。