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)除塵(chen)器是(shi)(shi)以靜電(dian)(dian)(dian)(dian)(dian)凈化(hua)法來(lai)收(shou)捕廢(fei)氣(qi)(qi)(qi)中的(de)(de)(de)(de)粉(fen)塵(chen),它的(de)(de)(de)(de)凈化(hua)工作上要是(shi)(shi)依靠電(dian)(dian)(dian)(dian)(dian)暈極和(he)(he)沉淀兩個系統來(lai)完成的(de)(de)(de)(de),當(dang)含(han)塵(chen)氣(qi)(qi)(qi)體(ti)進(jin)人(ren)(ren)氣(qi)(qi)(qi)刺叭時,含(han)塵(chen)氣(qi)(qi)(qi)體(ti)受到氣(qi)(qi)(qi)流(liu)分(fen)布(bu)板(ban)以及折流(liu)板(ban)的(de)(de)(de)(de)調整(zheng)后,使(shi)氣(qi)(qi)(qi)流(liu)能較(jiao)均勻地進(jin)人(ren)(ren)電(dian)(dian)(dian)(dian)(dian)場。在(zai)(zai)(zai)橫斷面擴大(da)的(de)(de)(de)(de)作用下(xia)(xia),氣(qi)(qi)(qi)流(liu)速(su)度迅(xun)速(su)降低,其中有些較(jiao)重(zhong)的(de)(de)(de)(de)塵(chen)粒(li)便失(shi)去速(su)度而沉降下(xia)(xia)來(lai)。進(jin)人(ren)(ren)電(dian)(dian)(dian)(dian)(dian)場的(de)(de)(de)(de)含(han)塵(chen)氣(qi)(qi)(qi)體(ti)由于(yu)電(dian)(dian)(dian)(dian)(dian)暈極通(tong)人(ren)(ren)高(gao)壓直(zhi)流(liu)電(dian)(dian)(dian)(dian)(dian),則在(zai)(zai)(zai)電(dian)(dian)(dian)(dian)(dian)暈極附(fu)近(jin)產生電(dian)(dian)(dian)(dian)(dian)暈現象,使(shi)氣(qi)(qi)(qi)體(ti)電(dian)(dian)(dian)(dian)(dian)離,電(dian)(dian)(dian)(dian)(dian)離后的(de)(de)(de)(de)氣(qi)(qi)(qi)體(ti)中存(cun)在(zai)(zai)(zai)大(da)量的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)子(zi)(zi)和(he)(he)離子(zi)(zi),這些電(dian)(dian)(dian)(dian)(dian)子(zi)(zi)和(he)(he)離子(zi)(zi)與進(jin)人(ren)(ren)電(dian)(dian)(dian)(dian)(dian)場的(de)(de)(de)(de)粉(fen)塵(chen)結(jie)合起來(lai),使(shi)塵(chen)粒(li)帶(dai)電(dian)(dian)(dian)(dian)(dian),帶(dai)電(dian)(dian)(dian)(dian)(dian)塵(chen)粒(li)在(zai)(zai)(zai)電(dian)(dian)(dian)(dian)(dian)場力的(de)(de)(de)(de)作用下(xia)(xia)趨(qu)向本設(she)備陽(yang)極(正極、本設(she)備采(cai)用負(fu)高(gao)壓制)和(he)(he)陰極(負(fu)極) , 釋放(fang)出電(dian)(dian)(dian)(dian)(dian)子(zi)(zi)分(fen)別(bie)沉積(ji)在(zai)(zai)(zai)相應的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)極上,通(tong)過設(she)備陰陽(yang)極振打系統的(de)(de)(de)(de)振打,使(shi)沉積(ji)在(zai)(zai)(zai)陰陽(yang)電(dian)(dian)(dian)(dian)(dian)極上的(de)(de)(de)(de)粉(fen)塵(chen)振落,進(jin)人(ren)(ren)集灰(hui)斗 通(tong)過排灰(hui)裝置放(fang)出,回收(shou)有物料,被(bei))凈化(hua)的(de)(de)(de)(de)氣(qi)(qi)(qi)體(ti)排入(ru)大(da)氣(qi)(qi)(qi)。
工作(zuo)原理
靜(jing)電(dian)(dian)(dian)除(chu)塵(chen)器的(de)(de)工作原理是利用高壓(ya)電(dian)(dian)(dian)場使(shi)煙(yan)氣(qi)發生電(dian)(dian)(dian)離,氣(qi)流(liu)中(zhong)的(de)(de)粉(fen)塵(chen)荷電(dian)(dian)(dian)在電(dian)(dian)(dian)場作用下(xia)(xia)與氣(qi)流(liu)分(fen)離。負極(ji)由(you)不同斷面形狀(zhuang)的(de)(de)金(jin)屬導線制成(cheng),叫放電(dian)(dian)(dian)電(dian)(dian)(dian)極(ji)。正極(ji)由(you)不同幾何(he)形狀(zhuang)的(de)(de)金(jin)屬板制成(cheng),叫集塵(chen)電(dian)(dian)(dian)極(ji)。靜(jing)電(dian)(dian)(dian)除(chu)塵(chen)器的(de)(de)性(xing)能受粉(fen)塵(chen)性(xing)質(zhi)、設備構(gou)造和煙(yan)氣(qi)流(liu)速等三個因素(su)的(de)(de)影(ying)響。粉(fen)塵(chen)的(de)(de)比電(dian)(dian)(dian)阻(zu)是評價(jia)導電(dian)(dian)(dian)性(xing)的(de)(de)指標,它(ta)對(dui)除(chu)塵(chen)效率(lv)有直接的(de)(de)影(ying)響。比電(dian)(dian)(dian)阻(zu)過低,塵(chen)粒難(nan)以保持在集塵(chen)電(dian)(dian)(dian)極(ji)上,致使(shi)其重(zhong)返氣(qi)流(liu)。比電(dian)(dian)(dian)阻(zu)過高,到達集塵(chen)電(dian)(dian)(dian)極(ji)的(de)(de)塵(chen)粒電(dian)(dian)(dian)荷不易放出,在塵(chen)層之間(jian)形成(cheng)電(dian)(dian)(dian)壓(ya)梯(ti)度會(hui)產(chan)生局部(bu)擊穿和放電(dian)(dian)(dian)現象。這些情(qing)況(kuang)都會(hui)造成(cheng)除(chu)塵(chen)效率(lv)下(xia)(xia)降(jiang)。
電(dian)除塵(chen)器的基本(ben)原(yuan)理(li)(li)是利(li)用電(dian)力(li)捕集煙(yan)氣中的粉塵(chen),主要包(bao)括以下四個相互有關的物理(li)(li)過程: (1) 氣體的電(dian)離(li)。(2) 粉塵(chen)的荷電(dian)。(3) 荷電(dian)粉塵(chen)向電(dian)極移動。(4) 荷電(dian)粉塵(chen)的捕集。