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(shi)靜(jing)電(dian)除(chu)塵(chen)器是以靜(jing)電(dian)凈化法(fa)來(lai)(lai)收(shou)捕廢氣(qi)中的(de)(de)(de)粉塵(chen),它的(de)(de)(de)凈化工作上(shang)要是依靠電(dian)暈(yun)(yun)極和(he)沉淀兩個系(xi)統(tong)來(lai)(lai)完成的(de)(de)(de),當含塵(chen)氣(qi)體(ti)進(jin)人氣(qi)刺叭時,含塵(chen)氣(qi)體(ti)受到氣(qi)流(liu)分布板以及折流(liu)板的(de)(de)(de)調(diao)整后(hou),使(shi)氣(qi)流(liu)能較均(jun)勻地進(jin)人電(dian)場(chang)。在(zai)橫斷面擴大(da)的(de)(de)(de)作用(yong)下(xia)(xia),氣(qi)流(liu)速度(du)迅(xun)速降低,其中有些較重的(de)(de)(de)塵(chen)粒便失去速度(du)而沉降下(xia)(xia)來(lai)(lai)。進(jin)人電(dian)場(chang)的(de)(de)(de)含塵(chen)氣(qi)體(ti)由于電(dian)暈(yun)(yun)極通(tong)人高壓(ya)直流(liu)電(dian),則在(zai)電(dian)暈(yun)(yun)極附近產(chan)生電(dian)暈(yun)(yun)現象,使(shi)氣(qi)體(ti)電(dian)離(li),電(dian)離(li)后(hou)的(de)(de)(de)氣(qi)體(ti)中存在(zai)大(da)量的(de)(de)(de)電(dian)子(zi)和(he)離(li)子(zi),這些電(dian)子(zi)和(he)離(li)子(zi)與進(jin)人電(dian)場(chang)的(de)(de)(de)粉塵(chen)結合起(qi)來(lai)(lai),使(shi)塵(chen)粒帶電(dian),帶電(dian)塵(chen)粒在(zai)電(dian)場(chang)力的(de)(de)(de)作用(yong)下(xia)(xia)趨向(xiang)本設(she)備(bei)陽(yang)極(正(zheng)極、本設(she)備(bei)采用(yong)負(fu)高壓(ya)制)和(he)陰(yin)極(負(fu)極) , 釋放(fang)出電(dian)子(zi)分別沉積在(zai)相應的(de)(de)(de)電(dian)極上(shang),通(tong)過設(she)備(bei)陰(yin)陽(yang)極振打(da)系(xi)統(tong)的(de)(de)(de)振打(da),使(shi)沉積在(zai)陰(yin)陽(yang)電(dian)極上(shang)的(de)(de)(de)粉塵(chen)振落(luo),進(jin)人集灰斗 通(tong)過排灰裝置放(fang)出,回收(shou)有物料,被)凈化的(de)(de)(de)氣(qi)體(ti)排入大(da)氣(qi)。
工(gong)作原理
靜(jing)電(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)(chen)(chen)器(qi)(qi)的(de)(de)(de)工作原理(li)是(shi)利用(yong)(yong)高壓電(dian)(dian)(dian)場(chang)使(shi)煙氣發(fa)生電(dian)(dian)(dian)離,氣流(liu)(liu)中的(de)(de)(de)粉(fen)塵(chen)(chen)(chen)(chen)(chen)荷電(dian)(dian)(dian)在(zai)(zai)電(dian)(dian)(dian)場(chang)作用(yong)(yong)下與氣流(liu)(liu)分離。負極由(you)(you)不同斷面形狀的(de)(de)(de)金屬導線制成,叫(jiao)(jiao)放(fang)電(dian)(dian)(dian)電(dian)(dian)(dian)極。正極由(you)(you)不同幾何形狀的(de)(de)(de)金屬板制成,叫(jiao)(jiao)集塵(chen)(chen)(chen)(chen)(chen)電(dian)(dian)(dian)極。靜(jing)電(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)(chen)(chen)器(qi)(qi)的(de)(de)(de)性能(neng)受粉(fen)塵(chen)(chen)(chen)(chen)(chen)性質、設備構造和煙氣流(liu)(liu)速等(deng)三個因(yin)素的(de)(de)(de)影響。粉(fen)塵(chen)(chen)(chen)(chen)(chen)的(de)(de)(de)比電(dian)(dian)(dian)阻(zu)是(shi)評價導電(dian)(dian)(dian)性的(de)(de)(de)指標,它(ta)對(dui)除(chu)塵(chen)(chen)(chen)(chen)(chen)效(xiao)率有直接的(de)(de)(de)影響。比電(dian)(dian)(dian)阻(zu)過低,塵(chen)(chen)(chen)(chen)(chen)粒難以保(bao)持在(zai)(zai)集塵(chen)(chen)(chen)(chen)(chen)電(dian)(dian)(dian)極上,致使(shi)其重返氣流(liu)(liu)。比電(dian)(dian)(dian)阻(zu)過高,到達集塵(chen)(chen)(chen)(chen)(chen)電(dian)(dian)(dian)極的(de)(de)(de)塵(chen)(chen)(chen)(chen)(chen)粒電(dian)(dian)(dian)荷不易(yi)放(fang)出(chu),在(zai)(zai)塵(chen)(chen)(chen)(chen)(chen)層之(zhi)間(jian)形成電(dian)(dian)(dian)壓梯(ti)度會(hui)產(chan)生局部擊穿和放(fang)電(dian)(dian)(dian)現象。這些情況都(dou)會(hui)造成除(chu)塵(chen)(chen)(chen)(chen)(chen)效(xiao)率下降。
電(dian)除塵器的基(ji)本原理是利用電(dian)力捕集(ji)(ji)煙氣(qi)中的粉塵,主(zhu)要(yao)包括(kuo)以下四個(ge)相(xiang)互有關的物(wu)理過程: (1) 氣(qi)體的電(dian)離。(2) 粉塵的荷(he)電(dian)。(3) 荷(he)電(dian)粉塵向(xiang)電(dian)極移動。(4) 荷(he)電(dian)粉塵的捕集(ji)(ji)。