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隴南XWD型臥式靜電除塵器

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XWD型臥式靜電除塵器


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(jing)電(dian)(dian)(dian)除塵(chen)器是以靜(jing)電(dian)(dian)(dian)凈(jing)化(hua)(hua)法(fa)來(lai)收(shou)捕廢(fei)氣(qi)(qi)(qi)(qi)中(zhong)的(de)(de)(de)粉(fen)塵(chen),它的(de)(de)(de)凈(jing)化(hua)(hua)工(gong)作上(shang)要是依靠電(dian)(dian)(dian)暈極(ji)(ji)和沉淀兩個系統來(lai)完成的(de)(de)(de),當含塵(chen)氣(qi)(qi)(qi)(qi)體(ti)(ti)(ti)進(jin)(jin)人氣(qi)(qi)(qi)(qi)刺叭時,含塵(chen)氣(qi)(qi)(qi)(qi)體(ti)(ti)(ti)受到氣(qi)(qi)(qi)(qi)流分(fen)布(bu)板以及(ji)折流板的(de)(de)(de)調整后,使(shi)(shi)氣(qi)(qi)(qi)(qi)流能較(jiao)均勻地進(jin)(jin)人電(dian)(dian)(dian)場(chang)。在橫斷(duan)面擴大的(de)(de)(de)作用下,氣(qi)(qi)(qi)(qi)流速(su)(su)度(du)(du)迅(xun)速(su)(su)降低,其中(zhong)有些(xie)較(jiao)重的(de)(de)(de)塵(chen)粒便失去速(su)(su)度(du)(du)而(er)沉降下來(lai)。進(jin)(jin)人電(dian)(dian)(dian)場(chang)的(de)(de)(de)含塵(chen)氣(qi)(qi)(qi)(qi)體(ti)(ti)(ti)由(you)于電(dian)(dian)(dian)暈極(ji)(ji)通(tong)人高(gao)壓(ya)直流電(dian)(dian)(dian),則(ze)在電(dian)(dian)(dian)暈極(ji)(ji)附近(jin)產生電(dian)(dian)(dian)暈現象,使(shi)(shi)氣(qi)(qi)(qi)(qi)體(ti)(ti)(ti)電(dian)(dian)(dian)離,電(dian)(dian)(dian)離后的(de)(de)(de)氣(qi)(qi)(qi)(qi)體(ti)(ti)(ti)中(zhong)存在大量的(de)(de)(de)電(dian)(dian)(dian)子(zi)和離子(zi),這(zhe)些(xie)電(dian)(dian)(dian)子(zi)和離子(zi)與進(jin)(jin)人電(dian)(dian)(dian)場(chang)的(de)(de)(de)粉(fen)塵(chen)結合(he)起來(lai),使(shi)(shi)塵(chen)粒帶電(dian)(dian)(dian),帶電(dian)(dian)(dian)塵(chen)粒在電(dian)(dian)(dian)場(chang)力的(de)(de)(de)作用下趨向本設(she)備陽(yang)極(ji)(ji)(正(zheng)極(ji)(ji)、本設(she)備采(cai)用負(fu)高(gao)壓(ya)制)和陰極(ji)(ji)(負(fu)極(ji)(ji)) , 釋放出電(dian)(dian)(dian)子(zi)分(fen)別沉積(ji)在相應(ying)的(de)(de)(de)電(dian)(dian)(dian)極(ji)(ji)上(shang),通(tong)過設(she)備陰陽(yang)極(ji)(ji)振(zhen)打(da)系統的(de)(de)(de)振(zhen)打(da),使(shi)(shi)沉積(ji)在陰陽(yang)電(dian)(dian)(dian)極(ji)(ji)上(shang)的(de)(de)(de)粉(fen)塵(chen)振(zhen)落(luo),進(jin)(jin)人集灰(hui)斗(dou) 通(tong)過排灰(hui)裝置放出,回收(shou)有物料,被(bei))凈(jing)化(hua)(hua)的(de)(de)(de)氣(qi)(qi)(qi)(qi)體(ti)(ti)(ti)排入大氣(qi)(qi)(qi)(qi)。


工作原理(li)

靜電(dian)除(chu)塵(chen)(chen)器(qi)的(de)工(gong)作原(yuan)理是(shi)(shi)利用高(gao)壓電(dian)場使(shi)煙氣(qi)(qi)發生電(dian)離(li),氣(qi)(qi)流中的(de)粉(fen)塵(chen)(chen)荷電(dian)在電(dian)場作用下與氣(qi)(qi)流分(fen)離(li)。負(fu)極(ji)(ji)(ji)由(you)不同斷面形狀(zhuang)的(de)金屬(shu)導線制(zhi)成(cheng),叫放(fang)(fang)(fang)電(dian)電(dian)極(ji)(ji)(ji)。正極(ji)(ji)(ji)由(you)不同幾何形狀(zhuang)的(de)金屬(shu)板制(zhi)成(cheng),叫集塵(chen)(chen)電(dian)極(ji)(ji)(ji)。靜電(dian)除(chu)塵(chen)(chen)器(qi)的(de)性(xing)能受(shou)粉(fen)塵(chen)(chen)性(xing)質、設(she)備構(gou)造(zao)和煙氣(qi)(qi)流速(su)等三個因素的(de)影響。粉(fen)塵(chen)(chen)的(de)比(bi)(bi)電(dian)阻(zu)是(shi)(shi)評價導電(dian)性(xing)的(de)指標,它對(dui)除(chu)塵(chen)(chen)效率(lv)有直接的(de)影響。比(bi)(bi)電(dian)阻(zu)過(guo)低(di),塵(chen)(chen)粒(li)難以保(bao)持在集塵(chen)(chen)電(dian)極(ji)(ji)(ji)上,致使(shi)其(qi)重返氣(qi)(qi)流。比(bi)(bi)電(dian)阻(zu)過(guo)高(gao),到達(da)集塵(chen)(chen)電(dian)極(ji)(ji)(ji)的(de)塵(chen)(chen)粒(li)電(dian)荷不易(yi)放(fang)(fang)(fang)出(chu),在塵(chen)(chen)層之間形成(cheng)電(dian)壓梯度會產生局部擊穿和放(fang)(fang)(fang)電(dian)現象。這些情(qing)況都會造(zao)成(cheng)除(chu)塵(chen)(chen)效率(lv)下降(jiang)。

電(dian)(dian)除塵器的基本原理是利用電(dian)(dian)力捕集煙氣中的粉(fen)塵,主要包括以(yi)下四個相互(hu)有(you)關的物理過(guo)程: (1) 氣體的電(dian)(dian)離。(2) 粉(fen)塵的荷(he)電(dian)(dian)。(3) 荷(he)電(dian)(dian)粉(fen)塵向(xiang)電(dian)(dian)極(ji)移(yi)動。(4) 荷(he)電(dian)(dian)粉(fen)塵的捕集。


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