濕電除塵器的除塵效率取決于什么

在電除塵器改造完工后，對每個電場進行空載試驗，繪制冷態伏安特性曲線，為改造工程的驗收提供依據，確保了電除塵器良好的初始狀態。濕電除塵器的(de)(de)除(chu)塵(chen)效率主(zhu)要取決于電(dian)(dian)(dian)(dian)場強(qiang)度的(de)(de)大小(xiao)，而電(dian)(dian)(dian)(dian)場強(qiang)度又與電(dian)(dian)(dian)(dian)極之(zhi)間的(de)(de)電(dian)(dian)(dian)(dian)暈(yun)(yun)電(dian)(dian)(dian)(dian)壓和(he)電(dian)(dian)(dian)(dian)流有關(guan)，將電(dian)(dian)(dian)(dian)暈(yun)(yun)電(dian)(dian)(dian)(dian)壓和(he)電(dian)(dian)(dian)(dian)暈(yun)(yun)電(dian)(dian)(dian)(dian)流之(zhi)間的(de)(de)關(guan)系(xi)稱為伏安特(te)性，據之(zhi)繪制的(de)(de)曲線(xian)(xian)圖稱為伏安特(te)性曲線(xian)(xian)，是衡(heng)量電(dian)(dian)(dian)(dian)除(chu)塵(chen)器安裝、檢修質量及運行工況的(de)(de)重要依據。

電暈封閉及反電暈的發生，根本原因為高比電阻粉塵導致陽極板或陰極線上積(ji)灰過多(duo)。要消,除此(ci)問(wen)題，必,須由振(zhen)(zhen)(zhen)(zhen)(zhen)打系統(tong)入手。首先分析了(le)電(dian)(dian)(dian)磁振(zhen)(zhen)(zhen)(zhen)(zhen)打系統(tong)接(jie)線原理(li)，振(zhen)(zhen)(zhen)(zhen)(zhen)打器連接(jie)成(cheng)矩陣形式，任何時刻，矩陣中每次只允許一個振(zhen)(zhen)(zhen)(zhen)(zhen)打器投(tou)入運(yun)行。同時，由于振(zhen)(zhen)(zhen)(zhen)(zhen)打器的內(nei)部(bu)高度是固定的，因此(ci)，要加(jia)強振(zhen)(zhen)(zhen)(zhen)(zhen)打，只能采取(qu)加(jia)強振(zhen)(zhen)(zhen)(zhen)(zhen)打頻率、調整振(zhen)(zhen)(zhen)(zhen)(zhen)打運(yun)行方(fang)式的方(fang)法來實現。伏(fu)安特性曲線向右平(ping)移，即相同電(dian)(dian)(dian)壓下，電(dian)(dian)(dian)暈電(dian)(dian)(dian)流較為平(ping)均地減少，這一般是由放電(dian)(dian)(dian)不,良造成(cheng)的，也就是說電(dian)(dian)(dian)場(chang)內(nei)部(bu)積(ji)灰較多(duo)引起電(dian)(dian)(dian)暈封閉。電(dian)(dian)(dian)場(chang)伏(fu)安特性曲線向右發生旋轉，同一電(dian)(dian)(dian)壓下，電(dian)(dian)(dian)暈電(dian)(dian)(dian)流大幅降低，據此(ci)分析，電(dian)(dian)(dian)場(chang)內(nei)部(bu)發生了(le)反電(dian)(dian)(dian)暈現象。

電(dian)除塵器改造完工后，在試運(yun)行(xing)中，為了保證煙塵排(pai)放(fang)達標，采取了電(dian)場(chang)高(gao)參數(shu)運(yun)行(xing)，電(dian)場(chang)的電(dian)流在80%以上(shang)運(yun)行(xing)，但(dan)根(gen)據脫硫入口(kou)CEMS表(biao)返回的數(shu)據來看，高(gao)電(dian)場(chang)參數(shu)并沒有帶來低的排(pai)放(fang)效果。同時，由于電(dian)場(chang)運(yun)行(xing)電(dian)流大，能耗也(ye)逐漸提高(gao)。

采用(yong)高(gao)(gao)(gao)頻(pin)(pin)高(gao)(gao)(gao)壓(ya)開關電(dian)(dian)(dian)(dian)源(yuan)可以大幅度(du)提高(gao)(gao)(gao)電(dian)(dian)(dian)(dian)除(chu)塵(chen)(chen)器捕(bu)集中、低比電(dian)(dian)(dian)(dian)阻(zu)粉(fen)塵(chen)(chen)的效率，很好地消,除(chu)高(gao)(gao)(gao)比電(dian)(dian)(dian)(dian)阻(zu)粉(fen)塵(chen)(chen)的反電(dian)(dian)(dian)(dian)暈(yun)現象。而(er)且相對(dui)于常規(gui)的可控(kong)(kong)硅電(dian)(dian)(dian)(dian)源(yuan)其控(kong)(kong)制(zhi)電(dian)(dian)(dian)(dian)路，高(gao)(gao)(gao)頻(pin)(pin)高(gao)(gao)(gao)壓(ya)開關電(dian)(dian)(dian)(dian)源(yuan)的操(cao)作(zuo)更為(wei)簡單、可靠。高(gao)(gao)(gao)頻(pin)(pin)高(gao)(gao)(gao)壓(ya)開關電(dian)(dian)(dian)(dian)源(yuan)對(dui)配(pei)電(dian)(dian)(dian)(dian)系統而(er)言是(shi)穩定(ding)性高(gao)(gao)(gao)的負載，便(bian)于計算機集中監(jian)控(kong)(kong)，電(dian)(dian)(dian)(dian)源(yuan)轉換效率高(gao)(gao)(gao)，質量輕、體積小，箱(xiang)內(nei)用(yong)油(you)少，其優點是(shi)顯而(er)易見的。濕式(shi)電(dian)(dian)(dian)(dian)除(chu)塵(chen)(chen)布置(zhi)在脫(tuo)硫塔出(chu)口，用(yong)于進一步(bu)出(chu)去脫(tuo)硫后煙氣中攜帶的粉(fen)塵(chen)(chen)。