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布袋除塵器-濕電除塵器-脫硫脫硝設備-宜興市海納環保有限公司

濕電除塵

2019-06-25

  一、WESP濕電除塵器工作原理     

  濕(shi)式(shi)(shi)靜電(dian)除(chu)(chu)塵(chen)(chen)(chen)(chen)器(qi)的基本原理和(he)干式(shi)(shi)靜電(dian)除(chu)(chu)塵(chen)(chen)(chen)(chen)器(qi)的原理基本相同(tong),都要經(jing)過(guo)荷電(dian)、收集(ji)和(he)清灰三(san)個(ge)階段。干式(shi)(shi)和(he)濕(shi)式(shi)(shi)煙氣環境不同(tong),直流(liu)高壓電(dian)使陰極線附近空間氣體電(dian)離(li),粉(fen)塵(chen)(chen)(chen)(chen)顆粒荷電(dian)后(hou)在電(dian)場(chang)力作用下移動(dong)并沉積(ji)在集(ji)塵(chen)(chen)(chen)(chen)陽(yang)極表面,干式(shi)(shi)電(dian)除(chu)(chu)塵(chen)(chen)(chen)(chen)器(qi)(ESP)硬振打清除(chu)(chu)粉(fen)塵(chen)(chen)(chen)(chen),濕(shi)式(shi)(shi)電(dian)除(chu)(chu)塵(chen)(chen)(chen)(chen)器(qi)(WESP)用集(ji)塵(chen)(chen)(chen)(chen)陽(yang)極表面水膜或沖洗清除(chu)(chu)粉(fen)塵(chen)(chen)(chen)(chen)。濕(shi)式(shi)(shi)電(dian)除(chu)(chu)塵(chen)(chen)(chen)(chen)器(qi)是用電(dian)除(chu)(chu)塵(chen)(chen)(chen)(chen)的方法分離(li)氣體中的氣溶膠和(he)懸浮(fu)塵(chen)(chen)(chen)(chen)粒,主(zhu)要包(bao)括以下四(si)個(ge)復(fu)雜而又相互(hu)有關的物理過(guo)程:

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   (1)氣體(ti)的電離。

   (2)氣溶(rong)膠(jiao)、懸浮塵(chen)粒的凝并與荷電(dian)。

   (3)荷電(dian)塵粒與(yu)氣溶膠向電(dian)極移動。

   (4)水膜(mo)使極(ji)板(ban)清灰。

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  在濕式(shi)電(dian)(dian)(dian)(dian)(dian)除(chu)塵(chen)裝置(zhi)的陽(yang)(yang)(yang)極(ji)和陰極(ji)線之間(jian)施加數(shu)萬伏直流(liu)高(gao)(gao)壓(ya)電(dian)(dian)(dian)(dian)(dian),在強電(dian)(dian)(dian)(dian)(dian)場的作(zuo)用(yong)下,電(dian)(dian)(dian)(dian)(dian)暈線周圍(wei)產(chan)生電(dian)(dian)(dian)(dian)(dian)暈層,電(dian)(dian)(dian)(dian)(dian)暈層中(zhong)的空氣發(fa)生雪崩式(shi)電(dian)(dian)(dian)(dian)(dian)離(li),從(cong)而產(chan)生大量的負離(li)子(zi)和少量的正(zheng)離(li)子(zi),這個(ge)過(guo)程叫電(dian)(dian)(dian)(dian)(dian)暈放電(dian)(dian)(dian)(dian)(dian);隨煙氣進(jin)入濕式(shi)電(dian)(dian)(dian)(dian)(dian)除(chu)塵(chen)裝置(zhi)內的塵(chen)(霧(wu))粒子(zi)與這些(xie)正(zheng)、負離(li)子(zi)相(xiang)碰撞而荷電(dian)(dian)(dian)(dian)(dian),荷電(dian)(dian)(dian)(dian)(dian)后的塵(chen)(霧(wu))粒子(zi)由于受到(dao)高(gao)(gao)壓(ya)靜電(dian)(dian)(dian)(dian)(dian)場庫(ku)侖(lun)力的作(zuo)用(yong),向陽(yang)(yang)(yang)極(ji)運動;到(dao)達陽(yang)(yang)(yang)極(ji)后,將其所帶的電(dian)(dian)(dian)(dian)(dian)荷釋放掉,塵(chen)(霧(wu))粒子(zi)就被陽(yang)(yang)(yang)極(ji)所收(shou)集,收(shou)集粉塵(chen)形成(cheng)水膜,靠重力或沖洗自(zi)***至(zhi)下部積液槽或者吸(xi)收(shou)塔,而與煙氣分離(li)。  

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  二、濕電除塵器系統組成

  1、陽極管組(zu)(模塊)

  陽(yang)極管(guan)束(shu)組由內(nei)切圓(yuan)?360正六邊(bian)形(xing)陽(yang)極管(guan)采用阻燃玻璃鋼,整體性(xing)好(hao),強度(du)高、陽(yang)極管(guan)的同(tong)心(xin)度(du)、平行(xing)度(du)高。

31210911_揚州富威爾-副本

  2、陰極系統

  陰(yin)極(ji)系統包括陰(yin)極(ji)電(dian)暈(yun)線(xian)及陰(yin)極(ji)線(xian)配(pei)套(tao)整體陰(yin)極(ji)線(xian)固(gu)定框架、連接螺栓;

  陰極線(xian)為***芒刺極線(xian),提高比(bi)電流和電場強度,有效性(xing)及(ji)耐腐(fu)蝕性(xing)可很好的滿(man)足新(xin)型濕式除(chu)塵裝置使用(yong)要(yao)求。

  3、絕緣子室(shi)及高(gao)壓進線箱

  濕式除塵裝置供電區在塔體的(de)頂部,配獨立絕(jue)緣子箱(xiang)。絕(jue)緣箱(xiang)采(cai)用大口徑的(de)瓷套管與(yu)特殊的(de)密封材料(liao)絕(jue)緣箱(xiang)頂蓋和筒體采(cai)用硅酸(suan)鋁纖維內保溫(wen),使箱(xiang)體絕(jue)緣性更(geng)可靠、更(geng)省電。

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  4、沖洗水系統

  陽極管(guan)上(shang)部設間(jian)斷(duan)噴淋裝置,使用工(gong)藝水池的清水,對陽極管(guan)及(ji)除霧器(qi)進(jin)(jin)行沖(chong)(chong)洗(xi)。根據實際運行工(gong)況,每24小時沖(chong)(chong)洗(xi)5分鐘。沖(chong)(chong)洗(xi)水及(ji)沖(chong)(chong)洗(xi)物直接(jie)進(jin)(jin)入吸收塔循(xun)環水池。

  5、電加熱系統

  由于除塵器為(wei)正(zheng)壓運行,為(wei)防止(zhi)絕(jue)緣子結露和(he)污染。絕(jue)緣箱(xiang)內設電加熱器,保證絕(jue)緣子絕(jue)緣性(xing)的(de)(de)可靠。絕(jue)緣子箱(xiang)內部(bu)設加熱裝置及溫度自動控制裝置,加熱均勻,溫度檢測準(zhun)確,能有(you)效地防止(zhi)霧氣進入(ru)絕(jue)緣箱(xiang),并(bing)防止(zhi)水分結露,有(you)一定的(de)(de)檢修空(kong)間。  

  


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