六肖期期准免费选一

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臭氧脱硝原理及对臭氧污染的影响

时间:2019-12-19 17:15:01浏览次数:

CHOUYANGYANGHUATUOXIAOZUOWEIXINXINGDEDIWENTUOXIAOFANGFA,ZAISHICHANGSHANGDEDAOJIAODUOYINGYONG。BENWENDUICHOUYANGYANGHUATUOXIAOJISHUDEYUANLIHEYOUSHIJINXINGJIANYAOFENXI,JIEHECHUANTONGTUOXIAOGONGYIJINXINGJIANDANDUIBI。SHIJIZHENGMINGCHOUYANGTUOXIAODUICHOUYANGWURANDEYINGXIANGJIHUMEIYOU。

六肖期期准免费选一 DANGQIANHUANBAOFENGBAOYUEYANYUELIE,HUANBAOYAOQIURIYIYANGE,ZHONGDUOZHONGXIAOXINGGUOLUYIJIGONGYEGUOLUPOQIEXUYAOHUANBAOGAIZAOSHENGJI。CHUANTONGDEYANQITUOXIAOGONGYIYIJINGBUNENGMANZUYANGEDEJIANPAIYAOQIU,CHUANTONGDEGONGYIYECUNZAISHEBEITOUZIGAO、ZHANDIMIANJIDADENGGEZHONGQUEDIAN。XUANZEJIGAOXIAOYOUJINGJIDETUOXIAOJISHUFANGAN,CHENGWEILEGEGUOLUHUANBAOGAIZAODEYIDAONANTI。CHOUYANGYANGHUATUOXIAOZUOWEIXINXINGDEDIWENTUOXIAOFANGFA,ZAISHICHANGSHANGDEDAOJIAODUOYINGYONG。BENWENDUICHOUYANGYANGHUATUOXIAOJISHUDEYUANLIHEYOUSHIJINXINGJIANYAOFENXI,JIEHECHUANTONGTUOXIAOGONGYIJINXINGJIANDANDUIBI。

1、臭氧氧化脱硝的原理

作为一种新兴的低温烟气脱硝技术,臭氧氧化脱硝近年来在许多中小型锅炉、工业锅炉上得到了广泛应用。原理是由臭氧发生器制备臭氧,通过喷射及布气装置引入烟道将烟气中的NO氧化成高价态、易溶于水的NO2、N2O5六肖期期准免费选一等,并在通过烟道后方布置的吸收塔中的喷淋溶液对烟气进行喷淋洗涤,使烟气中的氮氧化物从烟气中脱出并转移到液体中,实现烟气的脱硝处理目的。臭氧氧化脱硝过程中NO的氧化机理比较复杂。

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2、臭氧氧化脱硝的优势

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六肖期期准免费选一 CHOUYANGYANGHUATUOXIAOGONGYISHIYONGPAICHUYANQIWENDU90-250℃ZHIJIAN,ERQIETUOXIAOXIAOLVKEDAO95%YISHANG。ZAIDIWENYANQITUOXIAOSHANGYOUSHIMINGXIAN,MIBULESCRTUOXIAOJISHUDEWENDUCHUANGKOUXIANZHI。ERQIE,ZAITONGDENGTUOXIAOXIAOLVDEJICHUSHANG,TOUZIDI,YEBUXUYAOCUIHUAJICHENGBEN,YANDAOZULIXIAO,GAIZAOJIANDAN。ZONGTILAISHUO,DUIYUGAIZAONANDUDA、PAIYANWENDUBUGAO、GAIZAOKONGJIANSHOUXIAN、YICIXINGTOURENZIJINYOUXIANDEGUOLULAISHUO,CHOUYANGYANGHUATUOXIAOJISHUSHIYIZHONGJINGJIGAOXIAODEXUANZE。

3、臭氧氧化脱硝的不足

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以某项目热电厂为例,处理烟气量为220,000NM3/h,氮氧化物出口浓度为400mg/NM3,达标排放要求为50mg/NM3六肖期期准免费选一以下,每年的实际运行成本如下:

序号 项目名称 单位 设计参数 费用 备注
1



/

处理烟气量 NM3/h 220000   干基
氮氧化物含量 mg/NM3 450   干基
脱除效果 mg/NM3 50   干基
脱除氮氧化物量 Kg/h 88    
二氧化硫含量 mg/NM3 200   干基
脱除效果 mg/NM3 30   干基
脱除二氧化硫量 Kg/h 37    
2 年操作时间 小时 8760    
3 主要原料用量(氧气) NM3/a 5396160 432 0.8元/NM3
4 公用工程用量
4.1 运行设备功率 598.4      
4.2 年耗电量 104kw·h/a 524 398 0.76元/度
5 维修费       50
6 年总运行费用 万元/年   964  

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臭氧脱硝对臭氧污染的影响

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低层大气中的臭氧是典型的二次污染物,不是污染源直接排放产生的,而是由排放到空气中的氮氧化物和挥发性有机化合物(VOCs)等污染物,在空气中进行复杂的光化学反应产生的。比如来自机动车尾气、热电厂、工业锅炉等排放的氮氧化物,在强阳光辐射及高温的气象条件下经光化学反应就可以生成臭氧。对于氮氧化物的排放控制,各行业有相应的排放标准,如火电行业要求氮氧化物浓度不超过50mg/Nm3

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六肖期期准免费选一 ZONGZHI,CHOUYANGTUOXIAODUICHOUYANGWURANDEYINGXIANGJIHUMEIYOU,FANERYINWEITUOXIAOXIAOLVGAO,YOUXIAOJIANGDIDANYANGHUAWUDEPAIFANG,JIANSHAOLEGUOLUYANQIPAI[FANGDAOKONGQIZHONGDEDANYANGHUAWUWURANWU,JIANSHAOLECHOUYANGWURAN。

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