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)(dian)(dian)除塵(chen)(chen)(chen)(chen)器是以靜電(dian)(dian)(dian)(dian)(dian)(dian)(dian)凈(jing)化(hua)法來收(shou)(shou)捕廢氣(qi)(qi)(qi)中(zhong)(zhong)的(de)(de)粉(fen)塵(chen)(chen)(chen)(chen),它的(de)(de)凈(jing)化(hua)工作上要是依(yi)靠(kao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)極(ji)(ji)(ji)(ji)和(he)沉淀兩個系統來完成的(de)(de),當(dang)含塵(chen)(chen)(chen)(chen)氣(qi)(qi)(qi)體(ti)(ti)進(jin)人(ren)氣(qi)(qi)(qi)刺叭時,含塵(chen)(chen)(chen)(chen)氣(qi)(qi)(qi)體(ti)(ti)受到(dao)氣(qi)(qi)(qi)流(liu)分(fen)布板(ban)以及折流(liu)板(ban)的(de)(de)調整后,使(shi)(shi)氣(qi)(qi)(qi)流(liu)能(neng)較均勻地進(jin)人(ren)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)場(chang)(chang)(chang)(chang)。在(zai)(zai)橫斷面擴大(da)(da)的(de)(de)作用(yong)下,氣(qi)(qi)(qi)流(liu)速度(du)迅速降低,其中(zhong)(zhong)有些較重的(de)(de)塵(chen)(chen)(chen)(chen)粒便失去速度(du)而沉降下來。進(jin)人(ren)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)場(chang)(chang)(chang)(chang)的(de)(de)含塵(chen)(chen)(chen)(chen)氣(qi)(qi)(qi)體(ti)(ti)由于電(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)極(ji)(ji)(ji)(ji)通(tong)(tong)人(ren)高(gao)壓(ya)直(zhi)流(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian),則在(zai)(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)極(ji)(ji)(ji)(ji)附近產生電(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)現象(xiang),使(shi)(shi)氣(qi)(qi)(qi)體(ti)(ti)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)離(li)(li),電(dian)(dian)(dian)(dian)(dian)(dian)(dian)離(li)(li)后的(de)(de)氣(qi)(qi)(qi)體(ti)(ti)中(zhong)(zhong)存在(zai)(zai)大(da)(da)量的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)和(he)離(li)(li)子(zi),這些電(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)和(he)離(li)(li)子(zi)與進(jin)人(ren)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)場(chang)(chang)(chang)(chang)的(de)(de)粉(fen)塵(chen)(chen)(chen)(chen)結合起來,使(shi)(shi)塵(chen)(chen)(chen)(chen)粒帶電(dian)(dian)(dian)(dian)(dian)(dian)(dian),帶電(dian)(dian)(dian)(dian)(dian)(dian)(dian)塵(chen)(chen)(chen)(chen)粒在(zai)(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)場(chang)(chang)(chang)(chang)力的(de)(de)作用(yong)下趨向本(ben)設(she)備(bei)陽極(ji)(ji)(ji)(ji)(正極(ji)(ji)(ji)(ji)、本(ben)設(she)備(bei)采用(yong)負高(gao)壓(ya)制)和(he)陰極(ji)(ji)(ji)(ji)(負極(ji)(ji)(ji)(ji)) , 釋放出電(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)分(fen)別沉積(ji)在(zai)(zai)相應的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)(ji)上,通(tong)(tong)過設(she)備(bei)陰陽極(ji)(ji)(ji)(ji)振(zhen)打(da)系統的(de)(de)振(zhen)打(da),使(shi)(shi)沉積(ji)在(zai)(zai)陰陽電(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)(ji)上的(de)(de)粉(fen)塵(chen)(chen)(chen)(chen)振(zhen)落,進(jin)人(ren)集灰(hui)斗 通(tong)(tong)過排(pai)(pai)灰(hui)裝置放出,回(hui)收(shou)(shou)有物料,被)凈(jing)化(hua)的(de)(de)氣(qi)(qi)(qi)體(ti)(ti)排(pai)(pai)入大(da)(da)氣(qi)(qi)(qi)。
工作原理
靜電(dian)除(chu)(chu)塵(chen)(chen)(chen)(chen)器(qi)的(de)工作原理是利用高(gao)壓電(dian)場使煙氣(qi)發生電(dian)離(li),氣(qi)流(liu)中的(de)粉(fen)(fen)塵(chen)(chen)(chen)(chen)荷(he)電(dian)在電(dian)場作用下與氣(qi)流(liu)分離(li)。負極(ji)由不(bu)(bu)同(tong)斷面形狀的(de)金屬導線制成(cheng),叫(jiao)放電(dian)電(dian)極(ji)。正極(ji)由不(bu)(bu)同(tong)幾何形狀的(de)金屬板制成(cheng),叫(jiao)集(ji)塵(chen)(chen)(chen)(chen)電(dian)極(ji)。靜電(dian)除(chu)(chu)塵(chen)(chen)(chen)(chen)器(qi)的(de)性(xing)能受粉(fen)(fen)塵(chen)(chen)(chen)(chen)性(xing)質、設(she)備構造和煙氣(qi)流(liu)速(su)等三(san)個因素(su)的(de)影(ying)響(xiang)。粉(fen)(fen)塵(chen)(chen)(chen)(chen)的(de)比(bi)電(dian)阻是評價(jia)導電(dian)性(xing)的(de)指標(biao),它(ta)對除(chu)(chu)塵(chen)(chen)(chen)(chen)效率有直(zhi)接的(de)影(ying)響(xiang)。比(bi)電(dian)阻過低,塵(chen)(chen)(chen)(chen)粒(li)難(nan)以保持在集(ji)塵(chen)(chen)(chen)(chen)電(dian)極(ji)上,致使其重返氣(qi)流(liu)。比(bi)電(dian)阻過高(gao),到達集(ji)塵(chen)(chen)(chen)(chen)電(dian)極(ji)的(de)塵(chen)(chen)(chen)(chen)粒(li)電(dian)荷(he)不(bu)(bu)易放出,在塵(chen)(chen)(chen)(chen)層之間形成(cheng)電(dian)壓梯度會產生局部擊穿和放電(dian)現象(xiang)。這些情況都會造成(cheng)除(chu)(chu)塵(chen)(chen)(chen)(chen)效率下降(jiang)。
電(dian)除塵(chen)器(qi)的基(ji)本原理是利用電(dian)力捕集煙氣中(zhong)的粉塵(chen),主要包括以下四個(ge)相互有關(guan)的物理過(guo)程: (1) 氣體的電(dian)離。(2) 粉塵(chen)的荷(he)(he)(he)電(dian)。(3) 荷(he)(he)(he)電(dian)粉塵(chen)向電(dian)極移動(dong)。(4) 荷(he)(he)(he)電(dian)粉塵(chen)的捕集。