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)除塵(chen)器是以(yi)靜電(dian)(dian)(dian)凈化(hua)法來收(shou)捕廢氣(qi)(qi)中(zhong)的(de)(de)(de)(de)(de)(de)(de)粉(fen)塵(chen),它(ta)的(de)(de)(de)(de)(de)(de)(de)凈化(hua)工作(zuo)(zuo)上要是依靠(kao)電(dian)(dian)(dian)暈(yun)極(ji)(ji)和沉(chen)淀(dian)兩個系(xi)(xi)統來完成(cheng)的(de)(de)(de)(de)(de)(de)(de),當(dang)含塵(chen)氣(qi)(qi)體(ti)(ti)(ti)進(jin)人(ren)氣(qi)(qi)刺叭(ba)時,含塵(chen)氣(qi)(qi)體(ti)(ti)(ti)受(shou)到(dao)氣(qi)(qi)流分(fen)布板(ban)以(yi)及(ji)折流板(ban)的(de)(de)(de)(de)(de)(de)(de)調整后,使(shi)氣(qi)(qi)流能(neng)較均(jun)勻地進(jin)人(ren)電(dian)(dian)(dian)場。在(zai)(zai)橫斷面(mian)擴大的(de)(de)(de)(de)(de)(de)(de)作(zuo)(zuo)用(yong)下(xia),氣(qi)(qi)流速度迅速降低(di),其中(zhong)有些較重的(de)(de)(de)(de)(de)(de)(de)塵(chen)粒便失去速度而沉(chen)降下(xia)來。進(jin)人(ren)電(dian)(dian)(dian)場的(de)(de)(de)(de)(de)(de)(de)含塵(chen)氣(qi)(qi)體(ti)(ti)(ti)由于電(dian)(dian)(dian)暈(yun)極(ji)(ji)通人(ren)高壓直流電(dian)(dian)(dian),則(ze)在(zai)(zai)電(dian)(dian)(dian)暈(yun)極(ji)(ji)附近產生(sheng)電(dian)(dian)(dian)暈(yun)現(xian)象,使(shi)氣(qi)(qi)體(ti)(ti)(ti)電(dian)(dian)(dian)離,電(dian)(dian)(dian)離后的(de)(de)(de)(de)(de)(de)(de)氣(qi)(qi)體(ti)(ti)(ti)中(zhong)存在(zai)(zai)大量(liang)的(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)子(zi)和離子(zi),這(zhe)些電(dian)(dian)(dian)子(zi)和離子(zi)與進(jin)人(ren)電(dian)(dian)(dian)場的(de)(de)(de)(de)(de)(de)(de)粉(fen)塵(chen)結合(he)起來,使(shi)塵(chen)粒帶電(dian)(dian)(dian),帶電(dian)(dian)(dian)塵(chen)粒在(zai)(zai)電(dian)(dian)(dian)場力的(de)(de)(de)(de)(de)(de)(de)作(zuo)(zuo)用(yong)下(xia)趨向本設(she)備陽(yang)極(ji)(ji)(正極(ji)(ji)、本設(she)備采用(yong)負(fu)高壓制)和陰(yin)極(ji)(ji)(負(fu)極(ji)(ji)) , 釋放(fang)出電(dian)(dian)(dian)子(zi)分(fen)別沉(chen)積(ji)在(zai)(zai)相應(ying)的(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)極(ji)(ji)上,通過設(she)備陰(yin)陽(yang)極(ji)(ji)振打(da)系(xi)(xi)統的(de)(de)(de)(de)(de)(de)(de)振打(da),使(shi)沉(chen)積(ji)在(zai)(zai)陰(yin)陽(yang)電(dian)(dian)(dian)極(ji)(ji)上的(de)(de)(de)(de)(de)(de)(de)粉(fen)塵(chen)振落,進(jin)人(ren)集灰斗 通過排(pai)灰裝置放(fang)出,回收(shou)有物料,被)凈化(hua)的(de)(de)(de)(de)(de)(de)(de)氣(qi)(qi)體(ti)(ti)(ti)排(pai)入大氣(qi)(qi)。
工(gong)作原理
靜電(dian)(dian)(dian)(dian)除(chu)塵(chen)器(qi)的(de)(de)(de)工作原理是利用高(gao)(gao)壓電(dian)(dian)(dian)(dian)場使煙氣(qi)發生(sheng)電(dian)(dian)(dian)(dian)離,氣(qi)流(liu)中的(de)(de)(de)粉(fen)塵(chen)荷電(dian)(dian)(dian)(dian)在電(dian)(dian)(dian)(dian)場作用下與氣(qi)流(liu)分(fen)離。負極由不(bu)同(tong)斷面形狀的(de)(de)(de)金屬(shu)導線制成,叫(jiao)(jiao)放電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)極。正極由不(bu)同(tong)幾何(he)形狀的(de)(de)(de)金屬(shu)板(ban)制成,叫(jiao)(jiao)集(ji)塵(chen)電(dian)(dian)(dian)(dian)極。靜電(dian)(dian)(dian)(dian)除(chu)塵(chen)器(qi)的(de)(de)(de)性(xing)能受粉(fen)塵(chen)性(xing)質、設備構造和煙氣(qi)流(liu)速(su)等三個(ge)因(yin)素的(de)(de)(de)影響。粉(fen)塵(chen)的(de)(de)(de)比(bi)電(dian)(dian)(dian)(dian)阻(zu)(zu)是評(ping)價導電(dian)(dian)(dian)(dian)性(xing)的(de)(de)(de)指標,它對除(chu)塵(chen)效率有(you)直接的(de)(de)(de)影響。比(bi)電(dian)(dian)(dian)(dian)阻(zu)(zu)過(guo)低,塵(chen)粒(li)(li)難以保持在集(ji)塵(chen)電(dian)(dian)(dian)(dian)極上,致使其(qi)重返氣(qi)流(liu)。比(bi)電(dian)(dian)(dian)(dian)阻(zu)(zu)過(guo)高(gao)(gao),到達集(ji)塵(chen)電(dian)(dian)(dian)(dian)極的(de)(de)(de)塵(chen)粒(li)(li)電(dian)(dian)(dian)(dian)荷不(bu)易放出,在塵(chen)層之間形成電(dian)(dian)(dian)(dian)壓梯度(du)會(hui)產生(sheng)局部擊穿和放電(dian)(dian)(dian)(dian)現象。這些情(qing)況都會(hui)造成除(chu)塵(chen)效率下降。
電除塵(chen)器的(de)基(ji)本原(yuan)理(li)(li)是利用電力捕(bu)集(ji)煙氣中的(de)粉塵(chen),主要包括以下四個相互有關(guan)的(de)物理(li)(li)過程: (1) 氣體(ti)的(de)電離。(2) 粉塵(chen)的(de)荷電。(3) 荷電粉塵(chen)向電極(ji)移動。(4) 荷電粉塵(chen)的(de)捕(bu)集(ji)。