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)除塵(chen)(chen)器是以(yi)靜(jing)電(dian)(dian)凈化法來收捕廢(fei)氣(qi)(qi)(qi)中的(de)(de)(de)粉(fen)塵(chen)(chen),它的(de)(de)(de)凈化工作(zuo)上要是依靠電(dian)(dian)暈(yun)極(ji)(ji)(ji)和(he)(he)沉(chen)(chen)(chen)淀(dian)兩個(ge)系統來完成的(de)(de)(de),當含塵(chen)(chen)氣(qi)(qi)(qi)體(ti)(ti)進(jin)人氣(qi)(qi)(qi)刺叭時,含塵(chen)(chen)氣(qi)(qi)(qi)體(ti)(ti)受(shou)到氣(qi)(qi)(qi)流(liu)(liu)分布板(ban)以(yi)及(ji)折流(liu)(liu)板(ban)的(de)(de)(de)調整后,使(shi)氣(qi)(qi)(qi)流(liu)(liu)能較均勻地進(jin)人電(dian)(dian)場。在(zai)橫斷(duan)面(mian)擴(kuo)大(da)的(de)(de)(de)作(zuo)用下(xia)(xia),氣(qi)(qi)(qi)流(liu)(liu)速度迅(xun)速降低,其中有些(xie)較重的(de)(de)(de)塵(chen)(chen)粒(li)(li)便失(shi)去速度而(er)沉(chen)(chen)(chen)降下(xia)(xia)來。進(jin)人電(dian)(dian)場的(de)(de)(de)含塵(chen)(chen)氣(qi)(qi)(qi)體(ti)(ti)由于電(dian)(dian)暈(yun)極(ji)(ji)(ji)通人高(gao)壓直(zhi)流(liu)(liu)電(dian)(dian),則在(zai)電(dian)(dian)暈(yun)極(ji)(ji)(ji)附近產生電(dian)(dian)暈(yun)現(xian)象,使(shi)氣(qi)(qi)(qi)體(ti)(ti)電(dian)(dian)離(li),電(dian)(dian)離(li)后的(de)(de)(de)氣(qi)(qi)(qi)體(ti)(ti)中存在(zai)大(da)量的(de)(de)(de)電(dian)(dian)子和(he)(he)離(li)子,這些(xie)電(dian)(dian)子和(he)(he)離(li)子與(yu)進(jin)人電(dian)(dian)場的(de)(de)(de)粉(fen)塵(chen)(chen)結(jie)合(he)起來,使(shi)塵(chen)(chen)粒(li)(li)帶(dai)電(dian)(dian),帶(dai)電(dian)(dian)塵(chen)(chen)粒(li)(li)在(zai)電(dian)(dian)場力的(de)(de)(de)作(zuo)用下(xia)(xia)趨向(xiang)本設備陽(yang)極(ji)(ji)(ji)(正極(ji)(ji)(ji)、本設備采(cai)用負高(gao)壓制)和(he)(he)陰(yin)(yin)極(ji)(ji)(ji)(負極(ji)(ji)(ji)) , 釋(shi)放出電(dian)(dian)子分別沉(chen)(chen)(chen)積在(zai)相應的(de)(de)(de)電(dian)(dian)極(ji)(ji)(ji)上,通過設備陰(yin)(yin)陽(yang)極(ji)(ji)(ji)振(zhen)打系統的(de)(de)(de)振(zhen)打,使(shi)沉(chen)(chen)(chen)積在(zai)陰(yin)(yin)陽(yang)電(dian)(dian)極(ji)(ji)(ji)上的(de)(de)(de)粉(fen)塵(chen)(chen)振(zhen)落,進(jin)人集灰(hui)斗 通過排(pai)灰(hui)裝置(zhi)放出,回收有物料(liao),被(bei))凈化的(de)(de)(de)氣(qi)(qi)(qi)體(ti)(ti)排(pai)入大(da)氣(qi)(qi)(qi)。
工作原(yuan)理
靜電(dian)(dian)除(chu)塵(chen)(chen)(chen)(chen)器的工作(zuo)原理是(shi)利(li)用高壓電(dian)(dian)場使煙氣(qi)(qi)發(fa)生電(dian)(dian)離,氣(qi)(qi)流(liu)(liu)中(zhong)的粉(fen)塵(chen)(chen)(chen)(chen)荷(he)(he)電(dian)(dian)在(zai)電(dian)(dian)場作(zuo)用下與氣(qi)(qi)流(liu)(liu)分離。負極由不(bu)同斷面形狀的金屬導線制成,叫(jiao)放電(dian)(dian)電(dian)(dian)極。正極由不(bu)同幾(ji)何形狀的金屬板制成,叫(jiao)集(ji)塵(chen)(chen)(chen)(chen)電(dian)(dian)極。靜電(dian)(dian)除(chu)塵(chen)(chen)(chen)(chen)器的性(xing)能(neng)受粉(fen)塵(chen)(chen)(chen)(chen)性(xing)質(zhi)、設備構造(zao)(zao)和(he)煙氣(qi)(qi)流(liu)(liu)速等三(san)個因素的影響。粉(fen)塵(chen)(chen)(chen)(chen)的比(bi)電(dian)(dian)阻(zu)是(shi)評價導電(dian)(dian)性(xing)的指標,它對除(chu)塵(chen)(chen)(chen)(chen)效率有直接(jie)的影響。比(bi)電(dian)(dian)阻(zu)過低,塵(chen)(chen)(chen)(chen)粒(li)難以保持在(zai)集(ji)塵(chen)(chen)(chen)(chen)電(dian)(dian)極上(shang),致使其重返氣(qi)(qi)流(liu)(liu)。比(bi)電(dian)(dian)阻(zu)過高,到達集(ji)塵(chen)(chen)(chen)(chen)電(dian)(dian)極的塵(chen)(chen)(chen)(chen)粒(li)電(dian)(dian)荷(he)(he)不(bu)易放出,在(zai)塵(chen)(chen)(chen)(chen)層之間形成電(dian)(dian)壓梯度會產生局部擊穿和(he)放電(dian)(dian)現象(xiang)。這些情況(kuang)都會造(zao)(zao)成除(chu)塵(chen)(chen)(chen)(chen)效率下降。
電(dian)(dian)除塵器的基(ji)本原(yuan)理是(shi)利用電(dian)(dian)力捕集(ji)煙氣中的粉塵,主要包括以下四個相互有關的物理過程: (1) 氣體的電(dian)(dian)離。(2) 粉塵的荷(he)電(dian)(dian)。(3) 荷(he)電(dian)(dian)粉塵向電(dian)(dian)極移(yi)動。(4) 荷(he)電(dian)(dian)粉塵的捕集(ji)。