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脱硝余热锅炉


  1.1余热锅炉脱硝方式

  HUODIANJIZUNOxPAIFANGKONGZHIJISHUZHUYAOFENWEILIANGDALEI:YILEISHICAIYONGKONGZHIRANSHAODEFANGSHI,RUDINOxRANSHAOQIDENG,LINGYILEISHIDUIRANSHAOHOUSHENGCHENGDENOxJINXINGTUOCHU,ZHUYAOYOUSCRFAHESNCRFA,QIZHONGZAIHUODIANJIZUZHONGGUANGFANYINGYONGDEWEIXUANZEXINGCUIHUAHAIYUANFA(SCR)TUOXIAOJISHU。DUIYULIANHEXUNHUANJIZU,DINoxDERANSHAOKONGZHISHIZAIRANQILUNJIZHONGWANCHENGDE,YINCIDUIYUYUREGUOLULAISHUO,JINXUYAODUIRANQIRANSHAOHOUSHENGCHENGDENOxJINXINGTUOCHU,YIBANCAIYONGSCRFAYANQITUOXIAOJISHU。

  1.2YUREGUOLUTUOXIAOYUANLIJITUOXIAOXIAOLV

  SCRFAJIXUANZEXINGCUIHUAHAIYUANFAFATUOXIAOJISHU,YUREGUOLUSCRTUOXIAOYUANLIYURANMEIJIZUXIANGSI,JUNCAIYONGNH3WEIHAIYUANJI,JIANGNH3PENRUDAOYANDAOZHONG,YUYANQIJINXINGJUNYUNDEHUNHE,FASHENGRUXIAFANYING:

  4NO+4NH3+O2→4N2+6H2O (1)

  NO+NO2+2NH3→2N2+3H2O (2)

  3NO2+4NH3→7N2+6H2O (3)

  ZAIRANMEIJIZUZHONG,YANQIZHONGNOxDECHENGFENZHUYAOSHINO,YUEZHANZONGNOxHANLIANGDE95%,ERNO2JINZHAN5%ZUOYOU,YINCISCRFANYINGSHIJIYUFANYINGSHI(1)、(2)JINXINGDE。YURANMEIJIZUBUTONG,RANJIPAIQIZHONGDENO2HANLIANGJIAOGAO,GENJURANJIGONGKUANGJIRANSHAOFANGSHIDEBUTONG,NO2KENENGHUIZHANDAOYANQIZONGNOxHANLIANGDE50%YISHANG,CISHIHUIYOUYIBUFENNO2ANZHAOFANYINGSHI(3)JINXINGFANYING,YINCIZAIYUREGUOLUTUOXIAOZHONGKENENGHUITONGSHIFASHENGSHANGSHUSANGEFANYING。XUYAOZHUYIDESHI,FANYINGSHI(3)DEFANYINGSUDUYUANXIAOYUFANYINGSHI(1)HE(2),YINCIDANGNO2ZHANZONGNOxHANLIANG50%YISHANGSHI,NO2DEHANLIANGYUEGAO,ZHENGTIDEFANYINGSUDUYUEMAN,CISHIXUYAOGENGDUODECUIHUAJILAIBAOZHENGTUOXIAOXIAOLV。

  DUIYUYITIANRANQIWEIRANLIAODELIANHEXUNHUANJIZU,YANQIZHONGBUCUNZAIDAOZHICUIHUAJIDUHUIJIZHONGDUDEWUZHI,TONGSHI,YUREGUOLUYANDAONEILIUCHANGFENBUBIJIAOJUNYUN,YINCIYUREGUOLUTUOXIAOZHUANGZHIDETUOXIAOXIAOLVYAOGAOYURANMEIJIZU,***KEDA95%YISHANG。ZAIMEIGUO、RIBENDENGGUOJIARANQIJIZUZHONG,YIYOUDUOGETUOXIAOXIAOLV90%YISHANGDESCRZHUANGZHITOURUYUNXING,DUIYUGUONEIRANQIXIANGMU,GENJUWOGUODEHUANBAOBIAOZHUNDEYAOQIU,TUOXIAOXIAOLVTONGCHANGBUGAOYU80%。

  YUREGUOLUSCRTUOXIAOZHUANGZHIFENWEILIANGGEBUFEN,YUREGUOLUYANQIXITONGHEHAIYUANJIXITONG。

  YUREGUOLUTUOXIAOZHUANGZHIZHUYAODEGONGYILIUCHENGJIANTU1,YURANMEIJIZUJIBENXIANGTONG。HAIYUANJIZHIBEIXITONGTIGONGDEXISHIHOUDEANQI,TONGGUOPENANZHAGEJUNYUNDEPENRUDAOYANQIZHONG,ZAIJINGGUOCUIHUAJIMOKUAI,ZAICUIHUAJIDEZUOYONGXIANH3YUNOxFASHENGHAIYUANFANYING,DADAOTUOCHUYANQIZHONGNOxDEMUDE,FANYINGHOUDEQINGJIEYANQIZAITONGGUOXIAYOUDEGEJISHOUREMIANMOKUAI,***TONGGUOYANCONGPAIRUDAQI。ZAITUOXIAOFANYINGQUDERUKOU、CHUKOUHEYANCONGCHUKOUSHEZHIYOUWENDUHEFENXIYICEDIAN。




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