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(wo)式靜電(dian)(dian)(dian)(dian)(dian)(dian)除塵(chen)(chen)器(qi)是以靜電(dian)(dian)(dian)(dian)(dian)(dian)凈化(hua)(hua)法來(lai)收(shou)捕廢(fei)氣(qi)中(zhong)的(de)(de)(de)(de)(de)粉(fen)塵(chen)(chen),它(ta)的(de)(de)(de)(de)(de)凈化(hua)(hua)工作(zuo)上(shang)要(yao)是依(yi)靠電(dian)(dian)(dian)(dian)(dian)(dian)暈極(ji)和(he)沉(chen)淀兩個(ge)系統來(lai)完成(cheng)的(de)(de)(de)(de)(de),當含塵(chen)(chen)氣(qi)體(ti)(ti)進(jin)人(ren)(ren)氣(qi)刺叭時,含塵(chen)(chen)氣(qi)體(ti)(ti)受到氣(qi)流(liu)(liu)(liu)(liu)分布板以及折流(liu)(liu)(liu)(liu)板的(de)(de)(de)(de)(de)調整后(hou),使(shi)氣(qi)流(liu)(liu)(liu)(liu)能較均(jun)勻地進(jin)人(ren)(ren)電(dian)(dian)(dian)(dian)(dian)(dian)場(chang)(chang)。在(zai)(zai)橫斷(duan)面擴大(da)(da)的(de)(de)(de)(de)(de)作(zuo)用下(xia),氣(qi)流(liu)(liu)(liu)(liu)速(su)度迅速(su)降低,其中(zhong)有些較重的(de)(de)(de)(de)(de)塵(chen)(chen)粒便(bian)失去(qu)速(su)度而沉(chen)降下(xia)來(lai)。進(jin)人(ren)(ren)電(dian)(dian)(dian)(dian)(dian)(dian)場(chang)(chang)的(de)(de)(de)(de)(de)含塵(chen)(chen)氣(qi)體(ti)(ti)由(you)于(yu)電(dian)(dian)(dian)(dian)(dian)(dian)暈極(ji)通(tong)人(ren)(ren)高壓直流(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian),則在(zai)(zai)電(dian)(dian)(dian)(dian)(dian)(dian)暈極(ji)附近產生電(dian)(dian)(dian)(dian)(dian)(dian)暈現象,使(shi)氣(qi)體(ti)(ti)電(dian)(dian)(dian)(dian)(dian)(dian)離(li),電(dian)(dian)(dian)(dian)(dian)(dian)離(li)后(hou)的(de)(de)(de)(de)(de)氣(qi)體(ti)(ti)中(zhong)存在(zai)(zai)大(da)(da)量的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)子和(he)離(li)子,這些電(dian)(dian)(dian)(dian)(dian)(dian)子和(he)離(li)子與進(jin)人(ren)(ren)電(dian)(dian)(dian)(dian)(dian)(dian)場(chang)(chang)的(de)(de)(de)(de)(de)粉(fen)塵(chen)(chen)結合起來(lai),使(shi)塵(chen)(chen)粒帶電(dian)(dian)(dian)(dian)(dian)(dian),帶電(dian)(dian)(dian)(dian)(dian)(dian)塵(chen)(chen)粒在(zai)(zai)電(dian)(dian)(dian)(dian)(dian)(dian)場(chang)(chang)力的(de)(de)(de)(de)(de)作(zuo)用下(xia)趨向本(ben)(ben)設(she)備(bei)(bei)陽極(ji)(正(zheng)極(ji)、本(ben)(ben)設(she)備(bei)(bei)采用負(fu)高壓制)和(he)陰(yin)(yin)極(ji)(負(fu)極(ji)) , 釋(shi)放(fang)出(chu)電(dian)(dian)(dian)(dian)(dian)(dian)子分別沉(chen)積(ji)在(zai)(zai)相應的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)上(shang),通(tong)過設(she)備(bei)(bei)陰(yin)(yin)陽極(ji)振打(da)系統的(de)(de)(de)(de)(de)振打(da),使(shi)沉(chen)積(ji)在(zai)(zai)陰(yin)(yin)陽電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)上(shang)的(de)(de)(de)(de)(de)粉(fen)塵(chen)(chen)振落,進(jin)人(ren)(ren)集(ji)灰(hui)斗 通(tong)過排灰(hui)裝(zhuang)置放(fang)出(chu),回收(shou)有物料,被(bei))凈化(hua)(hua)的(de)(de)(de)(de)(de)氣(qi)體(ti)(ti)排入大(da)(da)氣(qi)。
工作原(yuan)理(li)
靜電(dian)(dian)(dian)(dian)除塵(chen)(chen)(chen)器(qi)的(de)工作原理是(shi)利(li)用高壓(ya)(ya)電(dian)(dian)(dian)(dian)場(chang)使煙氣(qi)發生(sheng)電(dian)(dian)(dian)(dian)離,氣(qi)流中(zhong)的(de)粉塵(chen)(chen)(chen)荷(he)電(dian)(dian)(dian)(dian)在(zai)電(dian)(dian)(dian)(dian)場(chang)作用下與氣(qi)流分離。負極由(you)不同(tong)斷面形狀(zhuang)的(de)金屬導(dao)線制成,叫放(fang)電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)極。正極由(you)不同(tong)幾何(he)形狀(zhuang)的(de)金屬板制成,叫集(ji)塵(chen)(chen)(chen)電(dian)(dian)(dian)(dian)極。靜電(dian)(dian)(dian)(dian)除塵(chen)(chen)(chen)器(qi)的(de)性能受(shou)粉塵(chen)(chen)(chen)性質(zhi)、設備(bei)構造(zao)和煙氣(qi)流速等三個因(yin)素的(de)影(ying)響(xiang)。粉塵(chen)(chen)(chen)的(de)比電(dian)(dian)(dian)(dian)阻(zu)是(shi)評價(jia)導(dao)電(dian)(dian)(dian)(dian)性的(de)指標,它對(dui)除塵(chen)(chen)(chen)效率有直接的(de)影(ying)響(xiang)。比電(dian)(dian)(dian)(dian)阻(zu)過(guo)低,塵(chen)(chen)(chen)粒難以保持(chi)在(zai)集(ji)塵(chen)(chen)(chen)電(dian)(dian)(dian)(dian)極上,致使其(qi)重返(fan)氣(qi)流。比電(dian)(dian)(dian)(dian)阻(zu)過(guo)高,到(dao)達集(ji)塵(chen)(chen)(chen)電(dian)(dian)(dian)(dian)極的(de)塵(chen)(chen)(chen)粒電(dian)(dian)(dian)(dian)荷(he)不易放(fang)出,在(zai)塵(chen)(chen)(chen)層之間(jian)形成電(dian)(dian)(dian)(dian)壓(ya)(ya)梯(ti)度會(hui)產生(sheng)局部擊(ji)穿和放(fang)電(dian)(dian)(dian)(dian)現象。這(zhe)些情(qing)況(kuang)都會(hui)造(zao)成除塵(chen)(chen)(chen)效率下降。
電(dian)除(chu)塵(chen)器的(de)基本原理是利用電(dian)力捕集煙(yan)氣中的(de)粉塵(chen),主(zhu)要包括以(yi)下四個(ge)相互有(you)關(guan)的(de)物理過程: (1) 氣體的(de)電(dian)離(li)。(2) 粉塵(chen)的(de)荷(he)電(dian)。(3) 荷(he)電(dian)粉塵(chen)向電(dian)極移動。(4) 荷(he)電(dian)粉塵(chen)的(de)捕集。