濕式靜電除塵器

濕式靜電除霧除塵器的工作原理

　　濕式(shi)靜(jing)(jing)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)除(chu)(chu)(chu)霧(wu)(wu)(wu)(wu)除(chu)(chu)(chu)塵(chen)器由高(gao)壓靜(jing)(jing)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)裝置和(he)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)除(chu)(chu)(chu)霧(wu)(wu)(wu)(wu)器本體組成(cheng)(cheng)，其(qi)工(gong)作(zuo)(zuo)原理(li)與靜(jing)(jing)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)除(chu)(chu)(chu)塵(chen)器一樣，只是(shi)(shi)沉(chen)淀(dian)極(ji)采用(yong)管(guan)束結構(gou)，每個沉(chen)淀(dian)極(ji)管(guan)對(dui)應(ying)1根陰極(ji)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)線。工(gong)作(zuo)(zuo)時(shi)利用(yong)高(gao)壓靜(jing)(jing)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)裝置對(dui)架設(she)在濕式(shi)靜(jing)(jing)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)除(chu)(chu)(chu)霧(wu)(wu)(wu)(wu)除(chu)(chu)(chu)塵(chen)器內的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)線施加負的(de)(de)高(gao)壓電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)，從(cong)而(er)在電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)線和(he)沉(chen)淀(dian)極(ji)管(guan)之間形成(cheng)(cheng)不均勻的(de)(de)高(gao)壓靜(jing)(jing)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)場(chang)并且兩個電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)是(shi)(shi)同軸布置的(de)(de)，沉(chen)淀(dian)極(ji)管(guan)內各(ge)點的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)場(chang)強度(du)與該點和(he)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)線之間的(de)(de)距離(li)成(cheng)(cheng)反(fan)比。在電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)場(chang)力的(de)(de)作(zuo)(zuo)用(yong)下，整個沉(chen)淀(dian)極(ji)管(guan)內部都形成(cheng)(cheng)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)區(qu)，在電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)區(qu)內，高(gao)濃度(du)的(de)(de)負離(li)子(zi)(電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi))從(cong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)源源不斷(duan)地向沉(chen)淀(dian)極(ji)管(guan)做定向運動(dong)從(cong)而(er)形成(cheng)(cheng)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)。當含(han)有水霧(wu)(wu)(wu)(wu)及其(qi)他污(wu)染物(wu)的(de)(de)煙氣(qi)進入沉(chen)淀(dian)極(ji)管(guan)時(shi)，由于離(li)子(zi)的(de)(de)碰撞和(he)擴散，水霧(wu)(wu)(wu)(wu)和(he)污(wu)染物(wu)荷(he)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)，然后在電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)場(chang)力的(de)(de)作(zuo)(zuo)用(yong)下迅速抵達沉(chen)淀(dian)極(ji)管(guan)的(de)(de)內壁并同時(shi)釋放(fang)出電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)荷(he)，在沉(chen)淀(dian)極(ji)管(guan)內壁形成(cheng)(cheng)液(ye)膜(mo)，液(ye)膜(mo)在重力作(zuo)(zuo)用(yong)下流(liu)到靜(jing)(jing)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)除(chu)(chu)(chu)霧(wu)(wu)(wu)(wu)器下部的(de)(de)集(ji)液(ye)槽中(zhong)集(ji)中(zhong)處理(li)，從(cong)而(er)達到捕(bu)集(ji)煙氣(qi)中(zhong)霧(wu)(wu)(wu)(wu)滴和(he)其(qi)它(ta)污(wu)染物(wu)的(de)(de)目的(de)(de)。濕式(shi)靜(jing)(jing)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)除(chu)(chu)(chu)霧(wu)(wu)(wu)(wu)除(chu)(chu)(chu)塵(chen)器的(de)(de)除(chu)(chu)(chu)塵(chen)除(chu)(chu)(chu)霧(wu)(wu)(wu)(wu)過程可概括為以(yi)下四個階段:氣(qi)體的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)離(li)、塵(chen)霧(wu)(wu)(wu)(wu)等粒子(zi)的(de)(de)荷(he)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)、荷(he)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)塵(chen)霧(wu)(wu)(wu)(wu)粒子(zi)的(de)(de)沉(chen)集(ji)、集(ji)塵(chen)的(de)(de)清(qing)理(li)。與靜(jing)(jing)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)除(chu)(chu)(chu)塵(chen)器相比，濕式(shi)靜(jing)(jing)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)除(chu)(chu)(chu)霧(wu)(wu)(wu)(wu)除(chu)(chu)(chu)塵(chen)器具(ju)有以(yi)下4項優點:

(1) 由于粉塵(chen)與水相互(hu)交融形成的霧滴具有良好的導(dao)電(dian)性，因此，能(neng)夠(gou)收集(ji)靜電(dian)除(chu)塵(chen)器不能(neng)收集(ji)的黏性、高比(bi)電(dian)阻的粉塵(chen)。

(2) 沒有振打(da)裝置而(er)采用單管(guan)單沖裝置，不(bu)存在(zai)二次飛揚(yang)問(wen)題，也不(bu)存在(zai)傳動(dong)裝置容易(yi)出故障的問(wen)題。

(3) 能(neng)提(ti)供幾倍(bei)于靜(jing)電(dian)(dian)除(chu)塵器的電(dian)(dian)暈功率(lv)，具有很高的除(chu)霧除(chu)塵效率(lv)，尤其對于細小的粉塵顆(ke)粒(li)、霧滴、氣溶膠、金屬顆(ke)粒(li)、酸霧等具有很強(qiang)的捕集能(neng)力。電(dian)(dian)極(ji)(ji)之間(jian)的電(dian)(dian)場Ex為半徑方向，其值為  式中:  U:施(shi)加在電(dian)(dian)極(ji)(ji)間(jian)的電(dian)(dian)壓；R:外部電(dian)(dian)極(ji)(ji)的半徑；r:內(nei)部電(dian)(dian)極(ji)(ji)的半徑；X:空間(jian)任一點離軸線的距離。

(4) 在(zai)采用(yong)微機(ji)控制電(dian)(dian)源和新型放電(dian)(dian)電(dian)(dian)極的(de)(de)情況下，煙氣中(zhong)的(de)(de)粉塵顆粒(li)、霧(wu)滴、氣溶膠、金屬顆粒(li)、酸霧(wu)等在(zai)電(dian)(dian)場(chang)的(de)(de)驅進速度(du)可以達到0.1m/s以上，有的(de)(de)高達0.19m/s。(本(ben)公(gong)司(si)生產的(de)(de)新型放電(dian)(dian)電(dian)(dian)極經(jing)實踐使用(yong)測得二次電(dian)(dian)暈電(dian)(dian)流大于(yu)0.6mA/m。)

　　特別(bie)值得注意的(de)是寬(kuan)極距的(de)濕(shi)式靜(jing)電(dian)除(chu)霧除(chu)塵(chen)(chen)(chen)器(qi)(qi)，在提(ti)高除(chu)塵(chen)(chen)(chen)除(chu)霧效(xiao)率，降低除(chu)塵(chen)(chen)(chen)除(chu)霧成本方(fang)面有很大的(de)優(you)勢，同時也是解決電(dian)暈閉塞的(de)方(fang)法(fa)之一，是目(mu)前濕(shi)式靜(jing)電(dian)除(chu)霧除(chu)塵(chen)(chen)(chen)器(qi)(qi)發展的(de)一個新趨(qu)勢。

　　總之，濕式(shi)靜(jing)電(dian)除(chu)(chu)霧(wu)除(chu)(chu)塵器特(te)點是除(chu)(chu)霧(wu)除(chu)(chu)塵效(xiao)率高(gao)(gao)，高(gao)(gao)可達(da)到(dao)99.99%,能捕集1um左右的粒子，且壓力(li)損失小(xiao)，一般為(wei)0.2～0.5kPa,運行穩(wen)定(ding)。由(you)于濕式(shi)靜(jing)電(dian)除(chu)(chu)霧(wu)除(chu)(chu)塵器里(li)有液體介質存在且溫度(du)在露點以(yi)下(xia)，因此選材時(shi)必(bi)須(xu)考慮介質的耐(nai)溫耐(nai)腐(fu)蝕性。

電暈放電簡介

　　通常(chang)在(zai)(zai)(zai)自由(you)空間中(zhong)，由(you)于宇宙輻射每(mei)立(li)方厘米空氣(qi)(qi)(qi)(qi)中(zhong)大(da)約有(you)1000個自由(you)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)(zi)(zi)(zi)(zi)(zi)(zi)(zi)存在(zai)(zai)(zai)，這(zhe)些(xie)自由(you)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)(zi)(zi)(zi)(zi)(zi)(zi)(zi)在(zai)(zai)(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)場(chang)的(de)(de)(de)(de)(de)(de)(de)作(zuo)用(yong)下(xia)會(hui)受到(dao)(dao)加(jia)速，撞擊(ji)(ji)氣(qi)(qi)(qi)(qi)體(ti)(ti)(ti)(ti)(ti)原(yuan)子(zi)(zi)(zi)(zi)(zi)(zi)(zi)(zi)或分(fen)子(zi)(zi)(zi)(zi)(zi)(zi)(zi)(zi)。自由(you)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)(zi)(zi)(zi)(zi)(zi)(zi)(zi)的(de)(de)(de)(de)(de)(de)(de)加(jia)速程(cheng)度隨著(zhu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)場(chang)強度的(de)(de)(de)(de)(de)(de)(de)增大(da)而增大(da)，自由(you)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)(zi)(zi)(zi)(zi)(zi)(zi)(zi)在(zai)(zai)(zai)撞擊(ji)(ji)氣(qi)(qi)(qi)(qi)體(ti)(ti)(ti)(ti)(ti)原(yuan)子(zi)(zi)(zi)(zi)(zi)(zi)(zi)(zi)或分(fen)子(zi)(zi)(zi)(zi)(zi)(zi)(zi)(zi)前(qian)積累(lei)的(de)(de)(de)(de)(de)(de)(de)能量(liang)隨之增大(da)。當(dang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)場(chang)強度達到(dao)(dao)氣(qi)(qi)(qi)(qi)體(ti)(ti)(ti)(ti)(ti)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)離(li)(li)(li)(li)的(de)(de)(de)(de)(de)(de)(de)臨界值時(shi)(shi)(shi)(shi)(shi)，自由(you)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)(zi)(zi)(zi)(zi)(zi)(zi)(zi)在(zai)(zai)(zai)撞擊(ji)(ji)前(qian)積累(lei)的(de)(de)(de)(de)(de)(de)(de)能量(liang)，將足以從(cong)氣(qi)(qi)(qi)(qi)體(ti)(ti)(ti)(ti)(ti)原(yuan)子(zi)(zi)(zi)(zi)(zi)(zi)(zi)(zi)或分(fen)子(zi)(zi)(zi)(zi)(zi)(zi)(zi)(zi)撞出一(yi)(yi)個電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)(zi)(zi)(zi)(zi)(zi)(zi)(zi)。此時(shi)(shi)(shi)(shi)(shi)在(zai)(zai)(zai)極(ji)(ji)線附近(jin)一(yi)(yi)個小(xiao)(xiao)(xiao)范圍內的(de)(de)(de)(de)(de)(de)(de)空氣(qi)(qi)(qi)(qi)就(jiu)(jiu)(jiu)開始(shi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)離(li)(li)(li)(li)，出現(xian)了氣(qi)(qi)(qi)(qi)體(ti)(ti)(ti)(ti)(ti)的(de)(de)(de)(de)(de)(de)(de)非(fei)自持(chi)放(fang)(fang)(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)。繼續升高電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)，氣(qi)(qi)(qi)(qi)體(ti)(ti)(ti)(ti)(ti)的(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)離(li)(li)(li)(li)將加(jia)劇形成(cheng)(cheng)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)(zi)(zi)(zi)(zi)(zi)(zi)(zi)崩(beng)(beng)(beng)，產(chan)生(sheng)(sheng)(sheng)大(da)量(liang)的(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)(zi)(zi)(zi)(zi)(zi)(zi)(zi)和(he)離(li)(li)(li)(li)子(zi)(zi)(zi)(zi)(zi)(zi)(zi)(zi)，并伴隨著(zhu)發出淡蘭(lan)色(se)的(de)(de)(de)(de)(de)(de)(de)輝光(guang)和(he)咝咝聲。放(fang)(fang)(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)也(ye)就(jiu)(jiu)(jiu)由(you)非(fei)自持(chi)轉變為(wei)(wei)自持(chi)放(fang)(fang)(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)，即電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)(yun)(yun)(yun)放(fang)(fang)(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)。氣(qi)(qi)(qi)(qi)體(ti)(ti)(ti)(ti)(ti)產(chan)生(sheng)(sheng)(sheng)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)離(li)(li)(li)(li)和(he)發光(guang)的(de)(de)(de)(de)(de)(de)(de)區(qu)(qu)(qu)(qu)域稱為(wei)(wei)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)(yun)(yun)(yun)區(qu)(qu)(qu)(qu)，在(zai)(zai)(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)(yun)(yun)(yun)區(qu)(qu)(qu)(qu)外面(mian)(mian)的(de)(de)(de)(de)(de)(de)(de)區(qu)(qu)(qu)(qu)域稱為(wei)(wei)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)(yun)(yun)(yun)外區(qu)(qu)(qu)(qu)。在(zai)(zai)(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)(yun)(yun)(yun)區(qu)(qu)(qu)(qu)里，離(li)(li)(li)(li)子(zi)(zi)(zi)(zi)(zi)(zi)(zi)(zi)的(de)(de)(de)(de)(de)(de)(de)產(chan)生(sheng)(sheng)(sheng)主要(yao)(yao)(yao)靠電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)(zi)(zi)(zi)(zi)(zi)(zi)(zi)在(zai)(zai)(zai)強場(chang)作(zuo)用(yong)下(xia)形成(cheng)(cheng)的(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)(zi)(zi)(zi)(zi)(zi)(zi)(zi)崩(beng)(beng)(beng)。電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)(yun)(yun)(yun)區(qu)(qu)(qu)(qu)中(zhong)和(he)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)(yun)(yun)(yun)極(ji)(ji)極(ji)(ji)性相(xiang)反的(de)(de)(de)(de)(de)(de)(de)離(li)(li)(li)(li)子(zi)(zi)(zi)(zi)(zi)(zi)(zi)(zi)被(bei)吸引(yin)到(dao)(dao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)(yun)(yun)(yun)極(ji)(ji)，和(he)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)(yun)(yun)(yun)極(ji)(ji)極(ji)(ji)性相(xiang)同(tong)的(de)(de)(de)(de)(de)(de)(de)離(li)(li)(li)(li)子(zi)(zi)(zi)(zi)(zi)(zi)(zi)(zi)則(ze)被(bei)推(tui)向(xiang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)(yun)(yun)(yun)外區(qu)(qu)(qu)(qu)。當(dang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)(yun)(yun)(yun)極(ji)(ji)為(wei)(wei)正(zheng)極(ji)(ji)時(shi)(shi)(shi)(shi)(shi)，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)(zi)(zi)(zi)(zi)(zi)(zi)(zi)崩(beng)(beng)(beng)是從(cong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)(yun)(yun)(yun)邊界開始(shi)向(xiang)極(ji)(ji)線發展(zhan)的(de)(de)(de)(de)(de)(de)(de)。電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)(zi)(zi)(zi)(zi)(zi)(zi)(zi)崩(beng)(beng)(beng)頭部的(de)(de)(de)(de)(de)(de)(de)自由(you)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)(zi)(zi)(zi)(zi)(zi)(zi)(zi)將很(hen)快進入電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)(yun)(yun)(yun)極(ji)(ji)，留(liu)在(zai)(zai)(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)(zi)(zi)(zi)(zi)(zi)(zi)(zi)崩(beng)(beng)(beng)后(hou)部的(de)(de)(de)(de)(de)(de)(de)遷移率低的(de)(de)(de)(de)(de)(de)(de)正(zheng)離(li)(li)(li)(li)子(zi)(zi)(zi)(zi)(zi)(zi)(zi)(zi)可(ke)(ke)(ke)以起到(dao)(dao)擴大(da)強場(chang)區(qu)(qu)(qu)(qu)的(de)(de)(de)(de)(de)(de)(de)作(zuo)用(yong)。當(dang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)(yun)(yun)(yun)極(ji)(ji)為(wei)(wei)負極(ji)(ji)時(shi)(shi)(shi)(shi)(shi)，由(you)于電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)(zi)(zi)(zi)(zi)(zi)(zi)(zi)崩(beng)(beng)(beng)是從(cong)極(ji)(ji)線表(biao)面(mian)(mian)開始(shi)向(xiang)外發展(zhan)的(de)(de)(de)(de)(de)(de)(de)，靠近(jin)極(ji)(ji)線的(de)(de)(de)(de)(de)(de)(de)是遷移率低的(de)(de)(de)(de)(de)(de)(de)正(zheng)離(li)(li)(li)(li)子(zi)(zi)(zi)(zi)(zi)(zi)(zi)(zi)，它可(ke)(ke)(ke)以把強場(chang)區(qu)(qu)(qu)(qu)限(xian)制(zhi)在(zai)(zai)(zai)極(ji)(ji)線附近(jin)的(de)(de)(de)(de)(de)(de)(de)較(jiao)小(xiao)(xiao)(xiao)范圍內。所以正(zheng)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)(yun)(yun)(yun)的(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)(yun)(yun)(yun)區(qu)(qu)(qu)(qu)要(yao)(yao)(yao)比(bi)(bi)負電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)(yun)(yun)(yun)的(de)(de)(de)(de)(de)(de)(de)大(da)。在(zai)(zai)(zai)負電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)(yun)(yun)(yun)時(shi)(shi)(shi)(shi)(shi)，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)(yun)(yun)(yun)區(qu)(qu)(qu)(qu)可(ke)(ke)(ke)達10～20mm；在(zai)(zai)(zai)正(zheng)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)(yun)(yun)(yun)時(shi)(shi)(shi)(shi)(shi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)(yun)(yun)(yun)區(qu)(qu)(qu)(qu)可(ke)(ke)(ke)達100mm。根據電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)容量(liang)的(de)(de)(de)(de)(de)(de)(de)大(da)小(xiao)(xiao)(xiao)，擊(ji)(ji)穿(chuan)可(ke)(ke)(ke)以表(biao)現(xian)為(wei)(wei)弧(hu)光(guang)放(fang)(fang)(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)或火(huo)(huo)花(hua)(hua)放(fang)(fang)(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)的(de)(de)(de)(de)(de)(de)(de)形式(shi)(shi)。當(dang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)容量(liang)足夠大(da)時(shi)(shi)(shi)(shi)(shi)，氣(qi)(qi)(qi)(qi)體(ti)(ti)(ti)(ti)(ti)擊(ji)(ji)穿(chuan)后(hou)會(hui)有(you)很(hen)大(da)的(de)(de)(de)(de)(de)(de)(de)放(fang)(fang)(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)流(liu)過，在(zai)(zai)(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)間形成(cheng)(cheng)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)弧(hu)稱為(wei)(wei)弧(hu)光(guang)放(fang)(fang)(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)，如同(tong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)弧(hu)焊接(jie)時(shi)(shi)(shi)(shi)(shi)出現(xian)的(de)(de)(de)(de)(de)(de)(de)情形一(yi)(yi)樣，可(ke)(ke)(ke)以燒壞電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)或供電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)設備(bei)。因此濕式(shi)(shi)靜(jing)(jing)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)除霧除塵器運行(xing)時(shi)(shi)(shi)(shi)(shi)應當(dang)盡(jin)量(liang)避免(mian)出現(xian)弧(hu)光(guang)放(fang)(fang)(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)。如果(guo)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)容量(liang)較(jiao)小(xiao)(xiao)(xiao)，則(ze)氣(qi)(qi)(qi)(qi)體(ti)(ti)(ti)(ti)(ti)擊(ji)(ji)穿(chuan)以后(hou)，放(fang)(fang)(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)會(hui)受到(dao)(dao)限(xian)制(zhi)，使之不足以形成(cheng)(cheng)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)弧(hu)，這(zhe)時(shi)(shi)(shi)(shi)(shi)的(de)(de)(de)(de)(de)(de)(de)放(fang)(fang)(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)就(jiu)(jiu)(jiu)會(hui)停留(liu)在(zai)(zai)(zai)火(huo)(huo)花(hua)(hua)放(fang)(fang)(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)階段。火(huo)(huo)花(hua)(hua)放(fang)(fang)(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)是一(yi)(yi)束明亮曲折常(chang)常(chang)又是分(fen)叉的(de)(de)(de)(de)(de)(de)(de)細(xi)絲，這(zhe)些(xie)細(xi)絲很(hen)快地穿(chuan)過放(fang)(fang)(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)間隙，又很(hen)快地熄滅，熄滅后(hou)隨即再(zai)度產(chan)生(sheng)(sheng)(sheng)。火(huo)(huo)花(hua)(hua)放(fang)(fang)(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)的(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)比(bi)(bi)弧(hu)光(guang)放(fang)(fang)(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)要(yao)(yao)(yao)小(xiao)(xiao)(xiao)得(de)多(duo)(duo)，一(yi)(yi)般不會(hui)損壞電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)，總之濕式(shi)(shi)靜(jing)(jing)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)除霧除塵器運行(xing)中(zhong)要(yao)(yao)(yao)采取措施控制(zhi)把氣(qi)(qi)(qi)(qi)體(ti)(ti)(ti)(ti)(ti)擊(ji)(ji)穿(chuan)，若(ruo)把氣(qi)(qi)(qi)(qi)體(ti)(ti)(ti)(ti)(ti)擊(ji)(ji)穿(chuan)后(hou)的(de)(de)(de)(de)(de)(de)(de)放(fang)(fang)(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)要(yao)(yao)(yao)限(xian)制(zhi)在(zai)(zai)(zai)火(huo)(huo)花(hua)(hua)放(fang)(fang)(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)的(de)(de)(de)(de)(de)(de)(de)范圍內。在(zai)(zai)(zai)同(tong)一(yi)(yi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)下(xia)負電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)(yun)(yun)(yun)的(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)(yun)(yun)(yun)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)就(jiu)(jiu)(jiu)要(yao)(yao)(yao)比(bi)(bi)正(zheng)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)(yun)(yun)(yun)的(de)(de)(de)(de)(de)(de)(de)大(da)，同(tong)時(shi)(shi)(shi)(shi)(shi)正(zheng)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)(yun)(yun)(yun)火(huo)(huo)花(hua)(hua)放(fang)(fang)(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)通道的(de)(de)(de)(de)(de)(de)(de)發展(zhan)比(bi)(bi)負電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)(yun)(yun)(yun)容易得(de)多(duo)(duo)，這(zhe)樣就(jiu)(jiu)(jiu)容易發生(sheng)(sheng)(sheng)擊(ji)(ji)穿(chuan)。即正(zheng)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)(yun)(yun)(yun)的(de)(de)(de)(de)(de)(de)(de)臨界擊(ji)(ji)穿(chuan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)也(ye)比(bi)(bi)負電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)(yun)(yun)(yun)時(shi)(shi)(shi)(shi)(shi)的(de)(de)(de)(de)(de)(de)(de)低，因此濕式(shi)(shi)靜(jing)(jing)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)除霧除塵器都采用(yong)負電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)(yun)(yun)(yun)。

電暈閉塞

　　注意(yi)當煙氣中含塵、酸(suan)霧濃(nong)度(du)(du)(du)越高(gao)(gao)則二次電(dian)(dian)流越小。當煙氣含塵霧濃(nong)度(du)(du)(du)高(gao)(gao)到某(mou)種程度(du)(du)(du)時，電(dian)(dian)場(chang)空間的(de)負離子(zi)數量已(yi)不(bu)能(neng)(neng)滿足(zu)大(da)量塵霧粒子(zi)所需，因此塵霧所得的(de)能(neng)(neng)量很(hen)低(di)，(表現(xian)為它(ta)的(de)驅進速度(du)(du)(du)很(hen)低(di))捕集效(xiao)率顯著降低(di)，就像電(dian)(dian)場(chang)被屏(ping)蔽，故稱電(dian)(dian)暈閉(bi)塞。解決辦(ban)法是采用(yong)寬極距的(de)設(she)計以提(ti)高(gao)(gao)電(dian)(dian)壓、提(ti)高(gao)(gao)電(dian)(dian)場(chang)強度(du)(du)(du)；采用(yong)新(xin)型的(de)放電(dian)(dian)電(dian)(dian)極以及生(sheng)產(chan)操作中采取(qu)降低(di)煙氣含塵霧的(de)措施等。

電(dian)(dian)(dian)暈(yun)電(dian)(dian)(dian)極肥(fei)大:氣(qi)體電(dian)(dian)(dian)離(li)(li)產(chan)生(sheng)的正(zheng)離(li)(li)子被吸引回電(dian)(dian)(dian)暈(yun)電(dian)(dian)(dian)極的途中，煙(yan)氣(qi)中有少量塵粒被它轟(hong)擊(ji)而(er)(er)荷(he)正(zheng)電(dian)(dian)(dian)，便(bian)向負極性的電(dian)(dian)(dian)暈(yun)電(dian)(dian)(dian)極運(yun)動(dong)并沉積(ji)在極線上而(er)(er)形成(cheng)。解決辦法是(shi)提(ti)高運(yun)行(xing)電(dian)(dian)(dian)壓和沖洗次數。