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CFB锅炉烟气再循环和SNCR联合脱硝技?- 百度文库

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CFB¯ѭSNCR

2080CFB¯NOxɻѧ߽˴оȡ˲Ľۡȼú¯NOxУNOиߵѧȶԣռNOxı90%۶ԣȼúNOx;Ҫ͡ȼͺͿ3֡CFB¯ȼ¶Ƚϵ(ͨС1000) ߱NOxɵĸ(Լ1300) ˼ûNOxɣҲCFB¯ԭʼNOxŷˮƽƫ͵Ҫԭ򡣶NOxһֻCHiŨȽϸҽΪƶĻɡˣCFB¯ɵNOxҪΪúĵԪؾӵĻѧתȼNOx

NOxɹҪCFB¯ڸúڸNOxCFB¯¯Ÿ߶ȷֱ¯ųڣŨظ߶ȳ½ơһ棬ηļϡNOxŨ;ͬʱ¯ڸCOδȼ̿NOxĻԭáCFB¯ȼúʯͽƶúȵͷӦȼϣλʱȼʵͣҪķӦ棬̼ϸߣ¯ڻԭԽǿ¯ųCO

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ɴ10000оCONOxڽ̿淢෴ӦNOxԭҪӦýС̬CFB̨ϵ֤

¶ȺԭӰCFB¯NOxɼԭҪءͨCFB¯״̬ıϸأͿʵֶԹ¯NOxŷŵĿơCFB¯¶ȿ900棬ҵúֺʱ(0.7%)Ȼʵִŷš 1 ̸ſ

ĿΪij糧̨ѭ¯̨Ϊ75t/hһ̨Ϊ40t/h

Ŀǰúʣ1#¯NOxŷŨΪ380-430 mg/Nm32#¯Ϊ400-500mg/Nm34#¯Ϊ400-500mg/Nm3Ϻ̴NOxŷŨΪ400mg/Nm3ң߿ɳ500mg/Nm3ݸ̨¯ȼչ͵ʵŷŨȵȶؽۺϷֱ1#2#4#¯е͵ȼŻоʵʩ硢صȶ෽Ż죬ָ͵ȼյԴﵽһ׶NOxĿ꣬ʵʩ͵ȼʹ¯NOxŨȽ͵300mg/Nm3;ͬʱһSNCRϵͳ10%ŨȰˮΪԭеڶ׶׶εأսNOxŨȽ͵100mg/Nm3£糧ڴŷҪ 2 ѭ

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2.1 ѭĻ

ѭDzý϶ĿNOxЧ֮һԭڹ¯ǰȡһֱֵ¯ڣһηηϺ¯ڣɽȼ¶ȣҲŨȣNOxŷŨȡѭ벻ѭʱ֮ȣΪѭʡ

ѭNOxŷŵЧȼƷֺѭйءѭΪ15-20%ʱú¯NOxŷŨȿɽ25%ҡNOxĽѭʵӶӣȼȼ¶йأȼ¶ԽߣѭʶNOxʵӰԽ

ѭһ10-20%øߵѭʱȼջ᲻ȶδȫȼʧӡ 2.2 Ŀǰ a.к

̨¯

1#¯Ϊ50%-70%󲿷λ7%-9%֮䣬ʱֳ10%Ĺ;2#¯Ϊ50%-65%Ϊ6.5%-9%֮䣬ʱγ10%;4#¯54%-60%֮ʱߴ18%ҡ

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һΧڣߣ߹ϵȼЧʣΪȼŨȵȼЧʼȼȣϵ1.15(2.5%)ӶȼЧӰ첻ͬʱȼNOxȼϵתŹϵ߶ߣӶȼNOxϸߡ b.һηʹ

һηͬʽCFB¯ƹͬһһηΪ50-60%֮䣬һη羭ԤԤȺң塢ñ¯֤ȼҪΪNOxɣʵʹϵΪ1%ңУʹҪڻԭաηǵڴѹ֤ȼǫ̈̄¯У4#¯54%-60%֮ʱһηʸߴ80-90%֮䡣һηʽϸߣʹĹϵߣƫߣӶʹNOxɡ

c.Чʽϵ

ǰ糧ԱĽеõCFB¯ķЧʵ£½϶ڴϵȴͣӶԭеƽƣĴ½ϸߣΪʹ£ҪӴӶһ¹ϵܺ d.¯ȱ

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word CFB¯ѭSNCR 2080CFB¯NOxɻѧ߽˴оȡ˲Ľۡȼú¯NOxУNOиߵѧȶԣռNOxı90%۶ԣȼúNOx;Ҫ͡ȼͺͿ3֡CFB¯ȼ¶Ƚϵ(ͨС1000) ߱NOxɵĸ(Լ1300) ˼ûNOxɣҲCFB¯ԭʼNOxŷˮƽƫ͵Ҫԭ򡣶NOxһֻCHiŨȽϸҽΪƶĻɡˣCFB¯ɵNOxҪΪúĵԪؾӵĻѧתȼNOx NOxɹҪC

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