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)(jing)電(dian)(dian)(dian)(dian)(dian)除塵(chen)(chen)器是以靜(jing)(jing)電(dian)(dian)(dian)(dian)(dian)凈化法來(lai)收捕(bu)廢氣(qi)中(zhong)(zhong)的(de)(de)(de)粉塵(chen)(chen),它(ta)的(de)(de)(de)凈化工作上要是依靠電(dian)(dian)(dian)(dian)(dian)暈(yun)極(ji)(ji)(ji)和(he)沉淀兩個(ge)系統(tong)來(lai)完成的(de)(de)(de),當(dang)含(han)塵(chen)(chen)氣(qi)體進(jin)(jin)人氣(qi)刺叭時(shi),含(han)塵(chen)(chen)氣(qi)體受到氣(qi)流分布板以及折流板的(de)(de)(de)調整后(hou),使(shi)氣(qi)流能較(jiao)均勻(yun)地(di)進(jin)(jin)人電(dian)(dian)(dian)(dian)(dian)場。在(zai)橫斷面(mian)擴(kuo)大的(de)(de)(de)作用(yong)下,氣(qi)流速(su)度(du)(du)迅速(su)降低,其中(zhong)(zhong)有些較(jiao)重的(de)(de)(de)塵(chen)(chen)粒便失去速(su)度(du)(du)而沉降下來(lai)。進(jin)(jin)人電(dian)(dian)(dian)(dian)(dian)場的(de)(de)(de)含(han)塵(chen)(chen)氣(qi)體由于電(dian)(dian)(dian)(dian)(dian)暈(yun)極(ji)(ji)(ji)通人高壓直流電(dian)(dian)(dian)(dian)(dian),則在(zai)電(dian)(dian)(dian)(dian)(dian)暈(yun)極(ji)(ji)(ji)附近(jin)產生(sheng)電(dian)(dian)(dian)(dian)(dian)暈(yun)現(xian)象(xiang),使(shi)氣(qi)體電(dian)(dian)(dian)(dian)(dian)離,電(dian)(dian)(dian)(dian)(dian)離后(hou)的(de)(de)(de)氣(qi)體中(zhong)(zhong)存(cun)在(zai)大量的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)子(zi)和(he)離子(zi),這些電(dian)(dian)(dian)(dian)(dian)子(zi)和(he)離子(zi)與進(jin)(jin)人電(dian)(dian)(dian)(dian)(dian)場的(de)(de)(de)粉塵(chen)(chen)結合起來(lai),使(shi)塵(chen)(chen)粒帶(dai)電(dian)(dian)(dian)(dian)(dian),帶(dai)電(dian)(dian)(dian)(dian)(dian)塵(chen)(chen)粒在(zai)電(dian)(dian)(dian)(dian)(dian)場力的(de)(de)(de)作用(yong)下趨向(xiang)本(ben)設備(bei)(bei)陽(yang)極(ji)(ji)(ji)(正極(ji)(ji)(ji)、本(ben)設備(bei)(bei)采用(yong)負高壓制)和(he)陰極(ji)(ji)(ji)(負極(ji)(ji)(ji)) , 釋(shi)放(fang)出電(dian)(dian)(dian)(dian)(dian)子(zi)分別沉積在(zai)相(xiang)應的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)上,通過(guo)設備(bei)(bei)陰陽(yang)極(ji)(ji)(ji)振(zhen)打(da)系統(tong)的(de)(de)(de)振(zhen)打(da),使(shi)沉積在(zai)陰陽(yang)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)上的(de)(de)(de)粉塵(chen)(chen)振(zhen)落,進(jin)(jin)人集灰斗 通過(guo)排灰裝(zhuang)置放(fang)出,回收有物料,被(bei))凈化的(de)(de)(de)氣(qi)體排入大氣(qi)。
工作原(yuan)理
靜(jing)電(dian)(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)器(qi)的工作(zuo)原理是利用高壓(ya)(ya)電(dian)(dian)(dian)(dian)場使(shi)煙氣(qi)(qi)發(fa)生電(dian)(dian)(dian)(dian)離(li),氣(qi)(qi)流(liu)中的粉塵(chen)(chen)(chen)荷(he)電(dian)(dian)(dian)(dian)在(zai)電(dian)(dian)(dian)(dian)場作(zuo)用下(xia)與氣(qi)(qi)流(liu)分離(li)。負極(ji)由不同斷面(mian)形狀的金(jin)屬導(dao)線制(zhi)成(cheng),叫(jiao)放(fang)電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)極(ji)。正(zheng)極(ji)由不同幾何形狀的金(jin)屬板制(zhi)成(cheng),叫(jiao)集(ji)塵(chen)(chen)(chen)電(dian)(dian)(dian)(dian)極(ji)。靜(jing)電(dian)(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)器(qi)的性(xing)能受(shou)粉塵(chen)(chen)(chen)性(xing)質(zhi)、設備構造(zao)和煙氣(qi)(qi)流(liu)速(su)等三個因素的影響。粉塵(chen)(chen)(chen)的比電(dian)(dian)(dian)(dian)阻(zu)是評價(jia)導(dao)電(dian)(dian)(dian)(dian)性(xing)的指標(biao),它對除(chu)塵(chen)(chen)(chen)效率(lv)有直(zhi)接的影響。比電(dian)(dian)(dian)(dian)阻(zu)過低,塵(chen)(chen)(chen)粒(li)難以保持在(zai)集(ji)塵(chen)(chen)(chen)電(dian)(dian)(dian)(dian)極(ji)上,致使(shi)其重返氣(qi)(qi)流(liu)。比電(dian)(dian)(dian)(dian)阻(zu)過高,到達集(ji)塵(chen)(chen)(chen)電(dian)(dian)(dian)(dian)極(ji)的塵(chen)(chen)(chen)粒(li)電(dian)(dian)(dian)(dian)荷(he)不易放(fang)出(chu),在(zai)塵(chen)(chen)(chen)層之間形成(cheng)電(dian)(dian)(dian)(dian)壓(ya)(ya)梯度會(hui)產生局部(bu)擊(ji)穿和放(fang)電(dian)(dian)(dian)(dian)現(xian)象。這些情況都(dou)會(hui)造(zao)成(cheng)除(chu)塵(chen)(chen)(chen)效率(lv)下(xia)降(jiang)。
電(dian)(dian)(dian)除(chu)塵器的(de)(de)基本原理是利用電(dian)(dian)(dian)力捕集煙氣(qi)中的(de)(de)粉(fen)塵,主要包括以下四個相互有(you)關的(de)(de)物理過程(cheng): (1) 氣(qi)體的(de)(de)電(dian)(dian)(dian)離(li)。(2) 粉(fen)塵的(de)(de)荷電(dian)(dian)(dian)。(3) 荷電(dian)(dian)(dian)粉(fen)塵向電(dian)(dian)(dian)極移(yi)動。(4) 荷電(dian)(dian)(dian)粉(fen)塵的(de)(de)捕集。