成都金河電除塵器
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人氣：1382 發布時間：2010-02-07 10:54 關鍵詞：除塵設備 產品型號： 應用領域：大氣控制 產品價格：面議 想了解更多產品詳情，請 |
電除塵器結構
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電除塵器工作原理
氣體電離過程
在(zai)兩個特定電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)間通以高壓(ya)直流電(dian)(dian)(dian)(dian)(dian)(dian)，建立電(dian)(dian)(dian)(dian)(dian)(dian)場(chang)， 使電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)系統的電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)超過臨界的電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya), 使氣(qi)體(ti)電(dian)(dian)(dian)(dian)(dian)(dian) 離(li)，產生電(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)放(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)。在(zai)放(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)周圍(wei)很小(xiao)的范(fan)圍(wei)內(nei) 電(dian)(dian)(dian)(dian)(dian)(dian)場(chang)強度很強，足(zu)以使氣(qi)體(ti)電(dian)(dian)(dian)(dian)(dian)(dian)離(li)。出(chu)現電(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)后， 放(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)附近的電(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)區(qu)，該區(qu)在(zai)離(li)放(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)表面大約 2~3mm的范(fan)圍(wei)內(nei)。在(zai)這(zhe)一區(qu)域內(nei)，由于放(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)表 面有足(zu)夠高的電(dian)(dian)(dian)(dian)(dian)(dian)場(chang)強度, 使氣(qi)體(ti)電(dian)(dian)(dian)(dian)(dian)(dian)離(li), 產生大量 的正(zheng)離(li)子和電(dian)(dian)(dian)(dian)(dian)(dian)子。這(zhe)時若放(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)上施加(jia)的是負(fu)電(dian)(dian)(dian)(dian)(dian)(dian) 壓(ya)，則產生負(fu)電(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)放(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)，電(dian)(dian)(dian)(dian)(dian)(dian)子移向正(zheng)極(ji)而(er)正(zheng)離(li)子 移向放(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)本身。
塵粒荷電過程
由(you)(you)于(yu)(yu)電(dian)(dian)暈(yun)區(qu)內產生的(de)(de)(de)離(li)子(zi)(zi)或電(dian)(dian)子(zi)(zi)進入電(dian)(dian)暈(yun)的(de)(de)(de)外(wai)區(qu)，并與中(zhong)性分子(zi)(zi)發(fa)生碰(peng)撞，使(shi)塵(chen)粒(li)荷(he)電(dian)(dian)。荷(he)電(dian)(dian)量(liang)的(de)(de)(de)大小與塵(chen)粒(li)的(de)(de)(de)粒(li)徑、電(dian)(dian)場(chang)的(de)(de)(de)強度(du)、離(li)子(zi)(zi)的(de)(de)(de)熱能及停留時間等因素都有關。通(tong)常我們認(ren)為塵(chen)粒(li)荷(he)電(dian)(dian)有兩(liang)種機(ji)理：即電(dian)(dian)場(chang)荷(he)電(dian)(dian)和擴散(san)荷(he)電(dian)(dian)。前者是(shi)由(you)(you)于(yu)(yu)在(zai)電(dian)(dian)場(chang)作用(yong)下，離(li)子(zi)(zi)與塵(chen)粒(li)碰(peng)撞，粘(zhan)(zhan)附于(yu)(yu)塵(chen)粒(li)上荷(he)電(dian)(dian)。后者是(shi)由(you)(you)于(yu)(yu)離(li)子(zi)(zi)的(de)(de)(de)不(bu)規則熱運動、氣(qi)體擴散(san)與塵(chen)粒(li)碰(peng)撞、粘(zhan)(zhan)附，使(shi)塵(chen)粒(li)荷(he)電(dian)(dian)。
收塵過程
粉(fen)塵(chen)荷(he)電后，在電場作用下按照自(zi)載電荷(he)的(de)極(ji)(ji)性(xing)，向極(ji)(ji)性(xing)相反的(de)電極(ji)(ji)運(yun)動，并沉(chen)積在該電極(ji)(ji)的(de)表面上。通常將粉(fen)塵(chen)垂直(zhi)于(yu)極(ji)(ji)板的(de)運(yun)動速度稱之為驅進速度。驅進速度的(de)大(da)小與(yu)粉(fen)塵(chen)的(de)荷(he)電量、電場速度、氣體性(xing)質等因素(su)有關系。帶(dai)負電荷(he)的(de)粉(fen)塵(chen)與(yu)收塵(chen)極(ji)(ji)接觸后，隨即失(shi)去電荷(he)，成(cheng)為中性(xing)粒子粘附于(yu)電極(ji)(ji)的(de)表面。然后借(jie)助振動裝(zhuang)置使(shi)電極(ji)(ji)產生抖(dou)動，塵(chen)粒從(cong)電極(ji)(ji)的(de)表面脫落，掉入電除(chu)塵(chen)器(qi)下部的(de)集灰斗中不斷地被清除(chu)。
電除塵器運用范圍
應用(yong)于燃煤電站(zhan)、冶金、建材、化工、造紙等行業的(de)工業爐(lu)窯及工業過(guo)程(cheng)中的(de)煙氣除塵，是(shi)目前最主(zhu)要的(de)高(gao)效(xiao)除塵設備。
