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)除塵(chen)(chen)器是以(yi)靜(jing)電(dian)(dian)(dian)(dian)凈(jing)(jing)化法來(lai)(lai)收(shou)捕廢氣(qi)(qi)(qi)中的(de)(de)(de)粉塵(chen)(chen),它(ta)的(de)(de)(de)凈(jing)(jing)化工作上(shang)要是依靠(kao)電(dian)(dian)(dian)(dian)暈(yun)(yun)極(ji)(ji)和(he)沉淀(dian)兩個系統(tong)來(lai)(lai)完成的(de)(de)(de),當(dang)含塵(chen)(chen)氣(qi)(qi)(qi)體(ti)(ti)(ti)(ti)進(jin)人(ren)氣(qi)(qi)(qi)刺叭時,含塵(chen)(chen)氣(qi)(qi)(qi)體(ti)(ti)(ti)(ti)受到(dao)氣(qi)(qi)(qi)流(liu)(liu)分(fen)布板以(yi)及折(zhe)流(liu)(liu)板的(de)(de)(de)調整后,使(shi)(shi)氣(qi)(qi)(qi)流(liu)(liu)能(neng)較均勻地進(jin)人(ren)電(dian)(dian)(dian)(dian)場。在(zai)橫斷面(mian)擴(kuo)大的(de)(de)(de)作用下(xia),氣(qi)(qi)(qi)流(liu)(liu)速(su)度(du)迅速(su)降低,其(qi)中有(you)些較重(zhong)的(de)(de)(de)塵(chen)(chen)粒便失去(qu)速(su)度(du)而沉降下(xia)來(lai)(lai)。進(jin)人(ren)電(dian)(dian)(dian)(dian)場的(de)(de)(de)含塵(chen)(chen)氣(qi)(qi)(qi)體(ti)(ti)(ti)(ti)由于電(dian)(dian)(dian)(dian)暈(yun)(yun)極(ji)(ji)通人(ren)高(gao)壓(ya)直流(liu)(liu)電(dian)(dian)(dian)(dian),則在(zai)電(dian)(dian)(dian)(dian)暈(yun)(yun)極(ji)(ji)附近產生電(dian)(dian)(dian)(dian)暈(yun)(yun)現象(xiang),使(shi)(shi)氣(qi)(qi)(qi)體(ti)(ti)(ti)(ti)電(dian)(dian)(dian)(dian)離(li)(li),電(dian)(dian)(dian)(dian)離(li)(li)后的(de)(de)(de)氣(qi)(qi)(qi)體(ti)(ti)(ti)(ti)中存(cun)在(zai)大量的(de)(de)(de)電(dian)(dian)(dian)(dian)子和(he)離(li)(li)子,這些電(dian)(dian)(dian)(dian)子和(he)離(li)(li)子與進(jin)人(ren)電(dian)(dian)(dian)(dian)場的(de)(de)(de)粉塵(chen)(chen)結合起來(lai)(lai),使(shi)(shi)塵(chen)(chen)粒帶電(dian)(dian)(dian)(dian),帶電(dian)(dian)(dian)(dian)塵(chen)(chen)粒在(zai)電(dian)(dian)(dian)(dian)場力的(de)(de)(de)作用下(xia)趨(qu)向本設備(bei)(bei)陽(yang)極(ji)(ji)(正極(ji)(ji)、本設備(bei)(bei)采用負高(gao)壓(ya)制)和(he)陰(yin)極(ji)(ji)(負極(ji)(ji)) , 釋放出電(dian)(dian)(dian)(dian)子分(fen)別沉積(ji)在(zai)相應的(de)(de)(de)電(dian)(dian)(dian)(dian)極(ji)(ji)上(shang),通過設備(bei)(bei)陰(yin)陽(yang)極(ji)(ji)振打(da)(da)系統(tong)的(de)(de)(de)振打(da)(da),使(shi)(shi)沉積(ji)在(zai)陰(yin)陽(yang)電(dian)(dian)(dian)(dian)極(ji)(ji)上(shang)的(de)(de)(de)粉塵(chen)(chen)振落,進(jin)人(ren)集灰(hui)斗 通過排(pai)灰(hui)裝置放出,回收(shou)有(you)物(wu)料,被(bei))凈(jing)(jing)化的(de)(de)(de)氣(qi)(qi)(qi)體(ti)(ti)(ti)(ti)排(pai)入大氣(qi)(qi)(qi)。
工作原(yuan)理
靜(jing)(jing)電(dian)(dian)(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)(chen)器的(de)(de)(de)(de)工作(zuo)原(yuan)理是(shi)利(li)用高壓(ya)(ya)電(dian)(dian)(dian)(dian)(dian)場使(shi)(shi)煙氣(qi)(qi)發生(sheng)電(dian)(dian)(dian)(dian)(dian)離,氣(qi)(qi)流(liu)中(zhong)的(de)(de)(de)(de)粉塵(chen)(chen)(chen)(chen)荷電(dian)(dian)(dian)(dian)(dian)在(zai)(zai)(zai)電(dian)(dian)(dian)(dian)(dian)場作(zuo)用下與(yu)氣(qi)(qi)流(liu)分離。負(fu)極(ji)(ji)由(you)不同(tong)斷面形(xing)狀(zhuang)的(de)(de)(de)(de)金(jin)屬導線制成(cheng),叫放電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)。正極(ji)(ji)由(you)不同(tong)幾(ji)何形(xing)狀(zhuang)的(de)(de)(de)(de)金(jin)屬板(ban)制成(cheng),叫集(ji)(ji)塵(chen)(chen)(chen)(chen)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)。靜(jing)(jing)電(dian)(dian)(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)(chen)器的(de)(de)(de)(de)性(xing)(xing)能受粉塵(chen)(chen)(chen)(chen)性(xing)(xing)質、設(she)備(bei)構(gou)造和(he)煙氣(qi)(qi)流(liu)速等三(san)個因(yin)素的(de)(de)(de)(de)影(ying)響(xiang)。粉塵(chen)(chen)(chen)(chen)的(de)(de)(de)(de)比(bi)電(dian)(dian)(dian)(dian)(dian)阻(zu)是(shi)評價導電(dian)(dian)(dian)(dian)(dian)性(xing)(xing)的(de)(de)(de)(de)指(zhi)標,它對除(chu)塵(chen)(chen)(chen)(chen)效(xiao)率(lv)有(you)直接的(de)(de)(de)(de)影(ying)響(xiang)。比(bi)電(dian)(dian)(dian)(dian)(dian)阻(zu)過低,塵(chen)(chen)(chen)(chen)粒難以保持在(zai)(zai)(zai)集(ji)(ji)塵(chen)(chen)(chen)(chen)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)上,致使(shi)(shi)其(qi)重返氣(qi)(qi)流(liu)。比(bi)電(dian)(dian)(dian)(dian)(dian)阻(zu)過高,到(dao)達集(ji)(ji)塵(chen)(chen)(chen)(chen)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)的(de)(de)(de)(de)塵(chen)(chen)(chen)(chen)粒電(dian)(dian)(dian)(dian)(dian)荷不易放出,在(zai)(zai)(zai)塵(chen)(chen)(chen)(chen)層(ceng)之(zhi)間(jian)形(xing)成(cheng)電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)梯度(du)會產生(sheng)局部(bu)擊(ji)穿和(he)放電(dian)(dian)(dian)(dian)(dian)現象。這些情況都會造成(cheng)除(chu)塵(chen)(chen)(chen)(chen)效(xiao)率(lv)下降。
電(dian)(dian)除塵(chen)器的(de)基本(ben)原理(li)是利(li)用電(dian)(dian)力捕集(ji)煙氣中的(de)粉(fen)塵(chen),主(zhu)要(yao)包括以下四個相(xiang)互有(you)關的(de)物(wu)理(li)過(guo)程(cheng): (1) 氣體的(de)電(dian)(dian)離。(2) 粉(fen)塵(chen)的(de)荷(he)電(dian)(dian)。(3) 荷(he)電(dian)(dian)粉(fen)塵(chen)向電(dian)(dian)極(ji)移動(dong)。(4) 荷(he)電(dian)(dian)粉(fen)塵(chen)的(de)捕集(ji)。