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)凈化法來收捕廢氣(qi)(qi)(qi)中(zhong)(zhong)的(de)(de)(de)粉塵(chen),它的(de)(de)(de)凈化工(gong)作上要(yao)是(shi)依靠電(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈極(ji)和沉淀兩個系統來完成的(de)(de)(de),當(dang)含塵(chen)氣(qi)(qi)(qi)體(ti)進(jin)人氣(qi)(qi)(qi)刺叭(ba)時,含塵(chen)氣(qi)(qi)(qi)體(ti)受到氣(qi)(qi)(qi)流分(fen)(fen)布板以及折流板的(de)(de)(de)調整后,使氣(qi)(qi)(qi)流能(neng)較(jiao)均勻(yun)地進(jin)人電(dian)(dian)(dian)(dian)(dian)(dian)(dian)場(chang)(chang)。在(zai)(zai)橫斷面擴大的(de)(de)(de)作用下,氣(qi)(qi)(qi)流速度迅速降(jiang)低,其中(zhong)(zhong)有些較(jiao)重的(de)(de)(de)塵(chen)粒(li)便失(shi)去速度而沉降(jiang)下來。進(jin)人電(dian)(dian)(dian)(dian)(dian)(dian)(dian)場(chang)(chang)的(de)(de)(de)含塵(chen)氣(qi)(qi)(qi)體(ti)由于(yu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈極(ji)通人高(gao)壓直流電(dian)(dian)(dian)(dian)(dian)(dian)(dian),則在(zai)(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈極(ji)附近產生電(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈現(xian)象,使氣(qi)(qi)(qi)體(ti)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)離(li),電(dian)(dian)(dian)(dian)(dian)(dian)(dian)離(li)后的(de)(de)(de)氣(qi)(qi)(qi)體(ti)中(zhong)(zhong)存(cun)在(zai)(zai)大量的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)和離(li)子(zi),這些電(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)和離(li)子(zi)與進(jin)人電(dian)(dian)(dian)(dian)(dian)(dian)(dian)場(chang)(chang)的(de)(de)(de)粉塵(chen)結合起來,使塵(chen)粒(li)帶(dai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian),帶(dai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)塵(chen)粒(li)在(zai)(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)場(chang)(chang)力的(de)(de)(de)作用下趨(qu)向本設(she)(she)(she)備陽(yang)極(ji)(正極(ji)、本設(she)(she)(she)備采(cai)用負高(gao)壓制)和陰極(ji)(負極(ji)) , 釋放(fang)出電(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)分(fen)(fen)別沉積在(zai)(zai)相應的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)上,通過(guo)設(she)(she)(she)備陰陽(yang)極(ji)振(zhen)打(da)系統的(de)(de)(de)振(zhen)打(da),使沉積在(zai)(zai)陰陽(yang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)上的(de)(de)(de)粉塵(chen)振(zhen)落,進(jin)人集灰(hui)斗(dou) 通過(guo)排灰(hui)裝置放(fang)出,回收有物料,被)凈化的(de)(de)(de)氣(qi)(qi)(qi)體(ti)排入大氣(qi)(qi)(qi)。
工作原理
靜電(dian)(dian)(dian)(dian)(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)器(qi)的(de)(de)工作(zuo)原理是(shi)利(li)用高(gao)壓電(dian)(dian)(dian)(dian)(dian)(dian)(dian)場使煙(yan)氣(qi)發(fa)生(sheng)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)離(li),氣(qi)流(liu)中的(de)(de)粉(fen)塵(chen)(chen)(chen)荷電(dian)(dian)(dian)(dian)(dian)(dian)(dian)在(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)場作(zuo)用下與(yu)氣(qi)流(liu)分離(li)。負極(ji)由不(bu)同斷面形狀的(de)(de)金屬導線制(zhi)成,叫(jiao)放電(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)。正極(ji)由不(bu)同幾何形狀的(de)(de)金屬板制(zhi)成,叫(jiao)集塵(chen)(chen)(chen)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)。靜電(dian)(dian)(dian)(dian)(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)器(qi)的(de)(de)性能(neng)受粉(fen)塵(chen)(chen)(chen)性質、設備構造和煙(yan)氣(qi)流(liu)速等三個因素的(de)(de)影(ying)響。粉(fen)塵(chen)(chen)(chen)的(de)(de)比電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)是(shi)評價導電(dian)(dian)(dian)(dian)(dian)(dian)(dian)性的(de)(de)指標(biao),它對除(chu)塵(chen)(chen)(chen)效(xiao)率有直(zhi)接的(de)(de)影(ying)響。比電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)過(guo)低,塵(chen)(chen)(chen)粒難以保持在(zai)集塵(chen)(chen)(chen)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)上,致使其(qi)重返氣(qi)流(liu)。比電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)過(guo)高(gao),到達集塵(chen)(chen)(chen)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)的(de)(de)塵(chen)(chen)(chen)粒電(dian)(dian)(dian)(dian)(dian)(dian)(dian)荷不(bu)易放出(chu),在(zai)塵(chen)(chen)(chen)層之間形成電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓梯度會產生(sheng)局部(bu)擊穿和放電(dian)(dian)(dian)(dian)(dian)(dian)(dian)現象。這(zhe)些情況都會造成除(chu)塵(chen)(chen)(chen)效(xiao)率下降(jiang)。
電(dian)除塵(chen)(chen)器的(de)基本原理(li)是利(li)用電(dian)力捕集煙氣(qi)中的(de)粉塵(chen)(chen),主要(yao)包括以下四(si)個相互有關的(de)物理(li)過程: (1) 氣(qi)體的(de)電(dian)離。(2) 粉塵(chen)(chen)的(de)荷電(dian)。(3) 荷電(dian)粉塵(chen)(chen)向電(dian)極移動。(4) 荷電(dian)粉塵(chen)(chen)的(de)捕集。