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)(dian)(dian)(dian)(dian)除塵(chen)器(qi)是(shi)以靜(jing)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)凈(jing)化(hua)(hua)法(fa)來(lai)收捕廢氣(qi)(qi)中的(de)(de)粉(fen)塵(chen),它(ta)的(de)(de)凈(jing)化(hua)(hua)工(gong)作(zuo)上(shang)要是(shi)依靠(kao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)極(ji)(ji)(ji)和沉淀兩個系(xi)(xi)統(tong)來(lai)完成的(de)(de),當含塵(chen)氣(qi)(qi)體(ti)進(jin)人氣(qi)(qi)刺叭(ba)時(shi),含塵(chen)氣(qi)(qi)體(ti)受到氣(qi)(qi)流(liu)(liu)分(fen)布板以及折流(liu)(liu)板的(de)(de)調整后(hou),使(shi)(shi)氣(qi)(qi)流(liu)(liu)能較均勻(yun)地進(jin)人電(dian)(dian)(dian)(dian)(dian)(dian)(dian)場(chang)。在(zai)(zai)(zai)橫(heng)斷面擴大的(de)(de)作(zuo)用下(xia)(xia),氣(qi)(qi)流(liu)(liu)速度(du)迅速降(jiang)低,其中有些(xie)較重的(de)(de)塵(chen)粒便失去速度(du)而沉降(jiang)下(xia)(xia)來(lai)。進(jin)人電(dian)(dian)(dian)(dian)(dian)(dian)(dian)場(chang)的(de)(de)含塵(chen)氣(qi)(qi)體(ti)由(you)于電(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)極(ji)(ji)(ji)通(tong)人高壓(ya)直流(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian),則(ze)在(zai)(zai)(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)極(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)體(ti)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)離(li)(li),電(dian)(dian)(dian)(dian)(dian)(dian)(dian)離(li)(li)后(hou)的(de)(de)氣(qi)(qi)體(ti)中存在(zai)(zai)(zai)大量的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)和離(li)(li)子(zi),這些(xie)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)和離(li)(li)子(zi)與進(jin)人電(dian)(dian)(dian)(dian)(dian)(dian)(dian)場(chang)的(de)(de)粉(fen)塵(chen)結合起來(lai),使(shi)(shi)塵(chen)粒帶電(dian)(dian)(dian)(dian)(dian)(dian)(dian),帶電(dian)(dian)(dian)(dian)(dian)(dian)(dian)塵(chen)粒在(zai)(zai)(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)場(chang)力的(de)(de)作(zuo)用下(xia)(xia)趨向(xiang)本設(she)(she)(she)備陽(yang)極(ji)(ji)(ji)(正極(ji)(ji)(ji)、本設(she)(she)(she)備采用負高壓(ya)制)和陰極(ji)(ji)(ji)(負極(ji)(ji)(ji)) , 釋放出電(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)分(fen)別(bie)沉積(ji)在(zai)(zai)(zai)相應的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)上(shang),通(tong)過設(she)(she)(she)備陰陽(yang)極(ji)(ji)(ji)振打(da)系(xi)(xi)統(tong)的(de)(de)振打(da),使(shi)(shi)沉積(ji)在(zai)(zai)(zai)陰陽(yang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)上(shang)的(de)(de)粉(fen)塵(chen)振落(luo),進(jin)人集(ji)灰斗 通(tong)過排(pai)灰裝置放出,回(hui)收有物(wu)料,被(bei))凈(jing)化(hua)(hua)的(de)(de)氣(qi)(qi)體(ti)排(pai)入大氣(qi)(qi)。
工(gong)作原理(li)
靜(jing)電(dian)(dian)(dian)除塵(chen)(chen)(chen)器(qi)的(de)(de)工(gong)作原理是利用高(gao)壓(ya)電(dian)(dian)(dian)場(chang)使煙氣(qi)(qi)發(fa)生(sheng)(sheng)電(dian)(dian)(dian)離,氣(qi)(qi)流(liu)中(zhong)的(de)(de)粉塵(chen)(chen)(chen)荷(he)電(dian)(dian)(dian)在電(dian)(dian)(dian)場(chang)作用下與(yu)氣(qi)(qi)流(liu)分(fen)離。負極(ji)(ji)由不(bu)同斷面形狀(zhuang)的(de)(de)金(jin)屬導(dao)線制成,叫放電(dian)(dian)(dian)電(dian)(dian)(dian)極(ji)(ji)。正極(ji)(ji)由不(bu)同幾何(he)形狀(zhuang)的(de)(de)金(jin)屬板制成,叫集塵(chen)(chen)(chen)電(dian)(dian)(dian)極(ji)(ji)。靜(jing)電(dian)(dian)(dian)除塵(chen)(chen)(chen)器(qi)的(de)(de)性(xing)能受粉塵(chen)(chen)(chen)性(xing)質、設備構造和煙氣(qi)(qi)流(liu)速等三個(ge)因(yin)素(su)的(de)(de)影響。粉塵(chen)(chen)(chen)的(de)(de)比(bi)(bi)(bi)電(dian)(dian)(dian)阻(zu)是評價導(dao)電(dian)(dian)(dian)性(xing)的(de)(de)指標,它對除塵(chen)(chen)(chen)效率(lv)有(you)直接的(de)(de)影響。比(bi)(bi)(bi)電(dian)(dian)(dian)阻(zu)過低,塵(chen)(chen)(chen)粒(li)難以保持(chi)在集塵(chen)(chen)(chen)電(dian)(dian)(dian)極(ji)(ji)上,致使其(qi)重返氣(qi)(qi)流(liu)。比(bi)(bi)(bi)電(dian)(dian)(dian)阻(zu)過高(gao),到達集塵(chen)(chen)(chen)電(dian)(dian)(dian)極(ji)(ji)的(de)(de)塵(chen)(chen)(chen)粒(li)電(dian)(dian)(dian)荷(he)不(bu)易放出,在塵(chen)(chen)(chen)層之(zhi)間形成電(dian)(dian)(dian)壓(ya)梯度會(hui)(hui)產(chan)生(sheng)(sheng)局(ju)部(bu)擊(ji)穿和放電(dian)(dian)(dian)現象(xiang)。這些情況(kuang)都會(hui)(hui)造成除塵(chen)(chen)(chen)效率(lv)下降(jiang)。
電(dian)除塵器的(de)基本(ben)原理(li)是利用(yong)電(dian)力捕(bu)集(ji)煙(yan)氣(qi)(qi)中的(de)粉(fen)塵,主(zhu)要包括以下四個相互有關的(de)物理(li)過程: (1) 氣(qi)(qi)體的(de)電(dian)離(li)。(2) 粉(fen)塵的(de)荷電(dian)。(3) 荷電(dian)粉(fen)塵向電(dian)極移動。(4) 荷電(dian)粉(fen)塵的(de)捕(bu)集(ji)。