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濕式(shi)靜電(dian)除霧器
設備介紹:
高濃度的酸霧氣體、含塵含硫氣體,在(zai)經(jing)過(guo)中和吸收凈化(hua)(hua)之(zhi)后,會產生大量(liang)的煙霧,如三酸、鉻酸、氫氟酸、二氧化(hua)(hua)硫等。
如(ru)果風(feng)量和風(feng)速較(jiao)大(da)時,情況會加劇,部分(fen)廢(fei)氣可能沒完全中和,而達(da)不(bu)到排放標準。這時我們(men)就需要(yao)進(jin)行(xing)除(chu)霧處理。
濕式靜電(dian)除霧(wu)器也(ye)叫濕式電(dian)除霧(wu)器,濕式電(dian)除塵器。廣(guang)泛應(ying)用于酸霧(wu)處理(li)、脫硫除塵等(deng)工業(ye)生產(chan)中,已經(jing)有上百年的應(ying)用歷(li)史。
適用范圍:
用(yong)于(yu)酸霧(wu)中(zhong)和(he)處(chu)理(li)之后(hou)(hou);濕法除塵(chen)脫(tuo)硫裝置后(hou)(hou)的除煙霧(wu)。廣泛用(yong)于(yu)酸洗、電(dian)鍍、鋁材、冶(ye)金、磚(zhuan)廠、發電(dian)、鍋爐(lu)、化工、電(dian)子(zi)、機械制造等行業(ye)過(guo)程(cheng)中(zhong)排放的酸堿性、含(han)塵(chen)含(han)硫廢氣除霧(wu)處(chu)理(li)。
設(she)備結構:
主體外(wai)殼(ke)采用(yong)不(bu)銹(xiu)鋼316L板(ban)材,內置(zhi)陰極棒、陽極板(ban)束、絕緣(yuan)箱、清潔水系統;主體外(wai)殼(ke)下(xia)面是(shi)沉淀收集室:設有觀察窗和排放口,可用(yong)水泥、塑料或玻璃鋼作成的廢水收集池。
設備(bei)原理:
其(qi)原理是向(xiang)電(dian)場(chang)空(kong)間輸送(song)直流(liu)負(fu)高壓,通(tong)過空(kong)間氣體(ti)電(dian)離,煙氣中粉(fen)塵顆粒和(he)霧滴(di)顆粒荷電(dian)后在電(dian)場(chang)力的作(zuo)用下,移動到(dao)(dao)電(dian)極板(ban)上,并使得液滴(di)越來(lai)越大(da),重力作(zuo)用下流(liu)到(dao)(dao)沉淀收集室(shi)中。
性(xing)能特點:
1.除(chu)霧效率高95%以上,氣體懸(xuan)浮(fu)顆粒及霧經在0.01--100um均可除(chu)去,對(dui)煙塵、煙霧適用(yong)范圍廣泛,工(gong)藝成熟(shu)、安全(quan)可靠(kao);
2.耐(nai)腐蝕、不磨(mo)損、使用壽命長(chang),在維護(hu)好電(dian)極正(zheng)常的情況(kuang)下可長(chang)期使用;
3.阻力小、能耗省、噪音(yin)低,維護簡單、方便(bian)。
濕(shi)式(shi)靜電(dian)(dian)除(chu)霧(wu)(wu)器(qi)與干(gan)式(shi)電(dian)(dian)除(chu)塵器(qi)工作原理相同(tong),都是(shi)向電(dian)(dian)場(chang)(chang)空(kong)間輸送直流負高壓(ya),通過空(kong)間氣(qi)(qi)(qi)(qi)(qi)體(ti)電(dian)(dian)離,煙(yan)(yan)(yan)(yan)氣(qi)(qi)(qi)(qi)(qi)中粉塵顆(ke)粒(li)和霧(wu)(wu)滴(di)顆(ke)粒(li)荷(he)電(dian)(dian)后(hou)在電(dian)(dian)場(chang)(chang)力的(de)(de)作用下,移動到(dao)(dao)(dao)收(shou)塵極板(集電(dian)(dian)極),從而(er)被收(shou)集在收(shou)塵極表面(mian)。干(gan)式(shi)電(dian)(dian)除(chu)塵器(qi)利(li)用振打清灰(hui)方式(shi)將收(shou)集到(dao)(dao)(dao)的(de)(de)粉塵震落(luo)到(dao)(dao)(dao)灰(hui)斗中,而(er)濕(shi)式(shi)電(dian)(dian)除(chu)塵器(qi)則是(shi)通過收(shou)集煙(yan)(yan)(yan)(yan)氣(qi)(qi)(qi)(qi)(qi)中的(de)(de)霧(wu)(wu)滴(di)顆(ke)粒(li),在收(shou)塵極表面(mian)形成溢(yi)流而(er)將粉塵沖洗到(dao)(dao)(dao)灰(hui)斗(水(shui)灰(hui)斗)中。濕(shi)式(shi)電(dian)(dian)除(chu)塵器(qi)與干(gan)式(shi)電(dian)(dian)除(chu)塵器(qi)最大(da)的(de)(de)不同(tong),在于煙(yan)(yan)(yan)(yan)氣(qi)(qi)(qi)(qi)(qi)工質(zhi)的(de)(de)差異,干(gan)式(shi)電(dian)(dian)除(chu)塵器(qi)煙(yan)(yan)(yan)(yan)氣(qi)(qi)(qi)(qi)(qi)為干(gan)煙(yan)(yan)(yan)(yan)氣(qi)(qi)(qi)(qi)(qi),煙(yan)(yan)(yan)(yan)氣(qi)(qi)(qi)(qi)(qi)溫度(du)(du)(du)較高,煙(yan)(yan)(yan)(yan)氣(qi)(qi)(qi)(qi)(qi)中基本不含(han)霧(wu)(wu)滴(di)。而(er)濕(shi)式(shi)電(dian)(dian)除(chu)塵器(qi)為濕(shi)飽(bao)和煙(yan)(yan)(yan)(yan)氣(qi)(qi)(qi)(qi)(qi),煙(yan)(yan)(yan)(yan)氣(qi)(qi)(qi)(qi)(qi)溫度(du)(du)(du)較低,煙(yan)(yan)(yan)(yan)氣(qi)(qi)(qi)(qi)(qi)中含(han)有大(da)量的(de)(de)霧(wu)(wu)滴(di)。濕(shi)式(shi)電(dian)(dian)除(chu)塵器(qi)通常設置在濕(shi)法脫硫裝置后(hou),脫硫后(hou)飽(bao)和煙(yan)(yan)(yan)(yan)氣(qi)(qi)(qi)(qi)(qi)中攜帶大(da)量水(shui)滴(di),在通過高壓(ya)電(dian)(dian)場(chang)(chang)時(shi)被捕獲,能夠減小(xiao)石(shi)膏雨形成的(de)(de)幾率。同(tong)時(shi)對于收(shou)集微(wei)細顆(ke)粒(li)物PM2.5、酸霧(wu)(wu)等有較好的(de)(de)效果,煙(yan)(yan)(yan)(yan)塵排(pai)放濃度(du)(du)(du)可(ke)以達到(dao)(dao)(dao)≤10毫克(ke)/立(li)方米。