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  • SCR/SNCRÓ  

     SCRÓˇ飺

        xԴ߻߀ԭSelective Catalytic ReductionSCRָڴ߻߀ԭNH3“x”cеNOxɟooȾN2H2OxָڟÓ^ПÓ߻xԵ،NOx߀ԭ鵪еSO2OٵرSO3@ͽx ڲӴ߻ėlcĻWضȞ900백ְڸߜ·ֽ߻ضȿԽ͵180-400 ߻һxTiO2wV2O5WO3 w䷽Ⅲ_

    SCRÓˇ̈D

     

        SCRˇϵyҪA찱߻ϵyϵyȽMҺ܇\ҺރoˮҺă扺ȡQڃ޵Ĝضȣ20r1MPaҺ^lӟ鰱ͨ^pyM백⾏_ϡLCͨ^cһһϡጰӷ̎ϡጵİͨ^ϵyЇM뵽cԭڴ߻еĵclWͣ™zޕrķǰOõ100%·ͨ^ʹ偠tBm\

    SCRÓgԭ

        SCR԰߀ԭ԰ʢŴ߻Լ߀ԭҪķbеҪĴȾ֮һҪMɳɷһͶһı_93%Óͨһ߀鷴ɵˮ

        Ҫ߀aһЩк|еĶⷴ@к|߻@Щп߻ӿ췴ٶȵnjһ߀ԭdz@ԟ@Щ𵽺ܴҪԴԴعܾSַmM

    SCRgҪCӳMͱҪSCR^ضȿ290430ض^^Ͷ^͕·@aYFMwڴ߻ʹ߻Ļض^߄tɴ߻ߜ؟YMʧÓЧ

    SCRÓϵyɣ

    SCRÓϵyҪMɲְ߻ϵyϵy߀ԭϵy߀ԭעϵy

    SCRw

    SCRwɷ֞释϶SCRÓЧcP߻|ضͣrgcϾ̶SCRȷ̶ֲ

    _^ߵÓЧOӋÿܶΕr횿]ÿhOӋڱĿOӋMSCRϵyğضȞ300-400

    ʽSCRϷҪD900ǰHҲжӰ푚ľֲbgСʹM߻ӵğֲÌӾŰʽ͸ŰCFDֵģMӋYMOӋCM߻ӵğپ̶<0.2

    ߻

    ĿǰõĴ߻ʽҪCʽͰʽ CʽĿǰЈռз~ߵĴ߻ʽcdžλweĴ߻Ը_ͬÓЧõĴ߻we^Сmϻҷֵ30g/m3ճ^Сğh

    ʽ߻Јռз~HڷCʽ߻ʽ߻ԽٰWǼȱe^С˷N߻cǣ^Ŀgͷmں߼ճ^ğhȱcdžλweĴ߻Եdweʹõ䓽Y

    SCRhʽYSCRw¿ɲ3Ӵ߻3Ӵ߻2+1÷ʽڲöӴ߻AһӴ߻λһӞ߻^Lrg\ÓЧ½o_ŷҪAλٰbһӴ߻

    ߻xürgӰÓЧʵҪ鱣CɹʩгɹØIĴ߻߻Ĕ񰴏SҪMOӋm]߻ʹÉ24000Сr

    ȼú/ȼ偠tÓÓ̰

    ˇ̣SCRÓ+늳m+Ó

    γəC:

    úȼrγɵNOxɷ֞NNOxȼͺڻ߅γɵĿNOxNOxFenimoreCһֻȼò̼ȼϕr迼]ҲǰɷNٵö

    NOxγʿɸZeldovichCMй了:

    УB=5.74×1011m3/2/(mol1/2·s)E/R=66900K\Мضȷˮƽγʺܵʹ]Nֽ߀ԭ^ƽҲܵһҲԲ迼] 

    ȼϵγɵNOռȼʽNOxŷŵ95%oՓǓ]lȼ߀ǽ̿ȼAζγ˴NOȼ^̵ȼϵƽÈD1ʾȼϵDҪܜض^՚ϵȣȼϺӰһ10%-45%ķ

    |偠t̰

    ˇ̣SCRÓ+m+FGDÓ

    ÓÓԭ

    |偠tȼ|ȼȼȼŷŴĵﲻȾh߀wһĂÓָľȥе^

    |偠tÓҹ˾õSCRxԴ߻߀ԭgڴ߻ͨ^Ӱ(NH3)԰NOxDɿ՚Ȼеĵ(N2)ˮNH3“xԵ”NOxDZ(O2)˷Q“x”

    Ҫʽ£

              4NO + 4NH3 + O2→4N2 + 6H2O

              6NO + 4NH3→5N2 + 6H2O

              2NO2 + 4NH3 + O2→3N2 + 6H2O

              6NO2 + 8NH3→7N2 + 12H2O

              NO + NO2 + 2NH3→2N2 + 3H2O

    ֮ڗl׃r߀ܰl¸

              4NH3 + 3O2→2N2 + 6H2O

              4NH3 + 5O2→4NO + 6H2O

              2NH3→N2 + 3H2

              SO3 + 2NH3 + H2O→(NH4)2SO4

              SO3 + NH3 + H2O→NH4HSO4

    ÓÓЧR99.5%

    SO2NOXȨQ10mg/Nm3

    Óm<2000pa

    Һȣ1.5L/M3

    ѭhˮ60m3/h

    ˮR3.0kg/cm2

    tÓÓ̰

    ˇ̣FGDÓ+m+SCRÓ

    tⱻLC빤ˇϵyÓSO2mÓÓwNOxLCt(ҊD)

    ԓˇҪϵyMɣ

    ÓϵyÓÓҺƂϵyMNa2CO3Һͨ^obúҺ͵ÓFγFҺcSO2lMÓÓЧʿ_90%Ó򄩇bcϵyMSO2“iStSO2ȵ׃Ԅ{Ó򄩇

    O韟mÓһwbϼһwȵijm϶κÓ

    ϵyؓ؟韟Óṩ߀ԭʹҺˮl鰱ʹ

    ϵyؓ؟ÓbÃȵĴ߻ṩ380-400ߜؽwֽ𤸽     ڴ߻@߻

    ÓÓԭ

    ðɷÓˇʹNa2CO3ҺÓ仯Wʽ飺

              Na2CO3+SO2→Na2SO3+CO2(1)

              2Na2SO3+O2→2Na2SO4(2)

              ÓNH3-SCRڴ߻߀ԭNH3xԵcNOxɟoȾN2H2OSŷ仯Wʽ£

              4NO+4NH3+O2→4N2+6H2O (3)

    Ȼ偠tÓÓ̰

    ˇ̣Ó++՚A+o늳m

    ȻҪɷ֞Nмռ^ͬrҲ΢ĵs|ȻȼضȺܸ՚еĵڸߜؗlɵĵ

    SCRÓϵySCRϵy̎ϵyͰעϵyϵyM

    ˮϵyˮжϱˮ޵

    ˮעϵyl⾏_ϡጲUˮ

    SCR͸ϵyɓTעSCR߻ϵy͟ȽM

    Ó֞ȼǰÓȼ^ÓȼÓ

    SCRÓgڴ߻x߀ԭأNOX߀ԭoĵˮĿǰHϼgVğÓgNOXÓЧ80-90%

    SNCRÓˇ飺

    SNCRÓgxԷǴ߻߀ԭSelective Non-Catalytic ReductionºSNCRgһNô߻8501100Ĝضȷ߀ԭ簱ˮҺȣtеNOx߀ԭÓɵˮ坍Óg

    ںmĜضȅ^Ұˮ߀ԭr䷴ʽ飺

    4NH3 + 4NO + O2→4N2 + 6H2O 1

    Ȼض^ߕrҲl¸

    4NH3 + 5O2→4NO + 6H2O2

    SNCRÓgÓЧһ30%80%偠tYߴӰ푺ܴ

    SNCRgĿǰڅش氱߀ԭ

    SNCRÓԭ

    SNCR gÓԭ飺 

    8501100淶NH3߀ԭNOxҪ飺

    NH3߀ԭ:  

    4NH3 + 4NO +O2 → 4N2 + 6H2O

    ؞߀ԭ : 

    NO+CO(NH2)2 +1/2O2 → 2N2 + CO2 + H2O

    ضȸ1100r, NH3t

    4NH3+5O2→4NO+6H2O

    ͬ߀ԭвͬķضȷ˜ضȷQضȴNH3ķќضȅ^ 8501100ض^ߕrڰķֽʹNOx߀ԭʽһض^͕rҲʹNOx߀ԭʽNH3Ǹߓ]lԺж|ݕµĭhȾ

    SNCRϵyݵԭЃɷNһڇcضȵӰ˰cNOxķ;һNLJ߀ԭ^߀ԭֲ߀ԭϵy܌߀ԭ뵽tЧIJλNOxڠtŃȵķֲ׃c̫ٻ򇊵tijϵİֲtFֲ^ߵİ^ȼú偠t߀ԭľֲty^LćxҪwஔĠtȽ鱣CÓֵܳMٵćNH3_õ߀ԭЧOʹNH3cõػ

    SNCRÓϵyMɣ

     SNCRϵyҪжϵyޅ^Ӊüϵyϵyc{ϵyFϵyȽM 

     SNCRϵyÓ^Ă^

      պ̓߀ԭ偠tmλעϡጺ߀ԭ

      ߀ԭӋݔcˮϡ߀ԭcMÓ

    SNCRÓˇ̣

    SNCRÓc

    1.ϵyռeС

    2.ͶYɱ\Mõ

    3.mϸNȼϵ偠t

    4.ȫԄӸЧԄӸۙќضȅ^g;

    5.ģKĹoϵyʹϵyb;So

    6.÷Vmc½aa

         SNCRÓO䣺

    ˮDGÓ̰

    ˇҪ؃ܵݔӋ

    ˮDGÓg:

    ͸ɷˮDGϿɲNOxƼgҪŽ׷Nһǵ͵ȼgõNOxȼּȼ̓GͷֽtȼƶȵDzÿȼúĶNOxȻʹɷNʩȫʹŒˮGNOxŷźy_ŷŝßÓg-xԷǴ߻߀ԭSelective Non-Catalytic ReductionQSNCRÓһdzЧĽNOxŷ;

    SNCRÓgĿǰˮÓgHGtmԺһͶYMҲ^ˮИIwr^ױˮaIwϵyҲռeС`ֻҪϵyOӋrֿ]ØIʹ×lһЩĆ}̎SNCRÓgИIJ

    ˮGNOXɣ

    ˮИIĻDGϟ^aкNOXNOXҪɷNONO2(NOsռ95%)ˮGNOXҪЃɷNγəC1NOX2ȼNOXˮaNOXŷҪȼs1500~2600mg/Nm3;ȼNOXȼs800~1300mg/Nm3ƽs1100mg/Nm3

    DGÓ

     

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