XWD型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)除(chu)塵(chen)(chen)(chen)(chen)器是(shi)以靜電(dian)(dian)(dian)(dian)凈(jing)(jing)化(hua)(hua)法來收(shou)捕廢氣(qi)中的(de)(de)(de)(de)(de)粉(fen)(fen)塵(chen)(chen)(chen)(chen),它的(de)(de)(de)(de)(de)凈(jing)(jing)化(hua)(hua)工(gong)作上(shang)要是(shi)依靠電(dian)(dian)(dian)(dian)暈(yun)極(ji)(ji)(ji)和(he)(he)沉(chen)(chen)淀兩個系(xi)統來完成(cheng)的(de)(de)(de)(de)(de),當含(han)塵(chen)(chen)(chen)(chen)氣(qi)體進(jin)人(ren)氣(qi)刺叭時,含(han)塵(chen)(chen)(chen)(chen)氣(qi)體受到氣(qi)流(liu)(liu)分(fen)(fen)布板以及折流(liu)(liu)板的(de)(de)(de)(de)(de)調(diao)整后,使(shi)氣(qi)流(liu)(liu)能較均勻地進(jin)人(ren)電(dian)(dian)(dian)(dian)場(chang)。在(zai)(zai)(zai)橫斷面擴(kuo)大的(de)(de)(de)(de)(de)作用(yong)下,氣(qi)流(liu)(liu)速(su)度迅速(su)降低,其中有(you)些較重的(de)(de)(de)(de)(de)塵(chen)(chen)(chen)(chen)粒便失去速(su)度而沉(chen)(chen)降下來。進(jin)人(ren)電(dian)(dian)(dian)(dian)場(chang)的(de)(de)(de)(de)(de)含(han)塵(chen)(chen)(chen)(chen)氣(qi)體由于電(dian)(dian)(dian)(dian)暈(yun)極(ji)(ji)(ji)通人(ren)高壓(ya)直流(liu)(liu)電(dian)(dian)(dian)(dian),則(ze)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)體電(dian)(dian)(dian)(dian)離(li)(li),電(dian)(dian)(dian)(dian)離(li)(li)后的(de)(de)(de)(de)(de)氣(qi)體中存在(zai)(zai)(zai)大量(liang)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)子(zi)和(he)(he)離(li)(li)子(zi),這些電(dian)(dian)(dian)(dian)子(zi)和(he)(he)離(li)(li)子(zi)與進(jin)人(ren)電(dian)(dian)(dian)(dian)場(chang)的(de)(de)(de)(de)(de)粉(fen)(fen)塵(chen)(chen)(chen)(chen)結合起(qi)來,使(shi)塵(chen)(chen)(chen)(chen)粒帶(dai)電(dian)(dian)(dian)(dian),帶(dai)電(dian)(dian)(dian)(dian)塵(chen)(chen)(chen)(chen)粒在(zai)(zai)(zai)電(dian)(dian)(dian)(dian)場(chang)力(li)的(de)(de)(de)(de)(de)作用(yong)下趨向本(ben)設備陽極(ji)(ji)(ji)(正極(ji)(ji)(ji)、本(ben)設備采(cai)用(yong)負高壓(ya)制)和(he)(he)陰(yin)(yin)極(ji)(ji)(ji)(負極(ji)(ji)(ji)) , 釋放出電(dian)(dian)(dian)(dian)子(zi)分(fen)(fen)別(bie)沉(chen)(chen)積在(zai)(zai)(zai)相應(ying)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)極(ji)(ji)(ji)上(shang),通過設備陰(yin)(yin)陽極(ji)(ji)(ji)振(zhen)打(da)(da)系(xi)統的(de)(de)(de)(de)(de)振(zhen)打(da)(da),使(shi)沉(chen)(chen)積在(zai)(zai)(zai)陰(yin)(yin)陽電(dian)(dian)(dian)(dian)極(ji)(ji)(ji)上(shang)的(de)(de)(de)(de)(de)粉(fen)(fen)塵(chen)(chen)(chen)(chen)振(zhen)落,進(jin)人(ren)集灰(hui)斗 通過排灰(hui)裝(zhuang)置放出,回(hui)收(shou)有(you)物(wu)料,被)凈(jing)(jing)化(hua)(hua)的(de)(de)(de)(de)(de)氣(qi)體排入(ru)大氣(qi)。
工(gong)作(zuo)原理
靜(jing)(jing)電(dian)(dian)除塵(chen)(chen)器的(de)工作(zuo)原理是(shi)利用(yong)高壓電(dian)(dian)場使煙氣(qi)(qi)發(fa)生(sheng)電(dian)(dian)離,氣(qi)(qi)流(liu)(liu)中(zhong)的(de)粉塵(chen)(chen)荷電(dian)(dian)在電(dian)(dian)場作(zuo)用(yong)下(xia)與氣(qi)(qi)流(liu)(liu)分(fen)離。負極(ji)由不(bu)同(tong)斷面形狀的(de)金(jin)屬(shu)導線制(zhi)成(cheng),叫放電(dian)(dian)電(dian)(dian)極(ji)。正極(ji)由不(bu)同(tong)幾何(he)形狀的(de)金(jin)屬(shu)板(ban)制(zhi)成(cheng),叫集(ji)(ji)塵(chen)(chen)電(dian)(dian)極(ji)。靜(jing)(jing)電(dian)(dian)除塵(chen)(chen)器的(de)性能受粉塵(chen)(chen)性質、設(she)備(bei)構造(zao)和煙氣(qi)(qi)流(liu)(liu)速等三個因素的(de)影響。粉塵(chen)(chen)的(de)比(bi)電(dian)(dian)阻(zu)是(shi)評價導電(dian)(dian)性的(de)指(zhi)標(biao),它(ta)對除塵(chen)(chen)效(xiao)率有(you)直接的(de)影響。比(bi)電(dian)(dian)阻(zu)過低(di),塵(chen)(chen)粒(li)難(nan)以保(bao)持在集(ji)(ji)塵(chen)(chen)電(dian)(dian)極(ji)上,致使其(qi)重返氣(qi)(qi)流(liu)(liu)。比(bi)電(dian)(dian)阻(zu)過高,到達集(ji)(ji)塵(chen)(chen)電(dian)(dian)極(ji)的(de)塵(chen)(chen)粒(li)電(dian)(dian)荷不(bu)易放出,在塵(chen)(chen)層(ceng)之間形成(cheng)電(dian)(dian)壓梯度會(hui)產生(sheng)局部擊穿(chuan)和放電(dian)(dian)現象。這(zhe)些(xie)情況都會(hui)造(zao)成(cheng)除塵(chen)(chen)效(xiao)率下(xia)降。
電(dian)(dian)除塵(chen)器的(de)基本原理是利用電(dian)(dian)力捕集煙氣中的(de)粉(fen)塵(chen),主(zhu)要包(bao)括以下(xia)四個相互有關的(de)物(wu)理過(guo)程(cheng): (1) 氣體(ti)的(de)電(dian)(dian)離。(2) 粉(fen)塵(chen)的(de)荷(he)電(dian)(dian)。(3) 荷(he)電(dian)(dian)粉(fen)塵(chen)向電(dian)(dian)極移動。(4) 荷(he)電(dian)(dian)粉(fen)塵(chen)的(de)捕集。