神华国华准格尔电厂330mw机组锅炉燃烧控制系统优化

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1、发电技术论神华国华准格尔电厂330MW机组锅炉燃烧控制系统优化王冠丁，王文彬，安惠勇，王琥神华国华准格尔电厂，内蒙古鄂尔多斯010300[摘要]针对神华国华准格尔电厂2X330MW机组锅炉二次风量和烟气含氧量校正难以投入自动控制方式的问题，对锅炉燃烧控制系统进行了优化。将空气预热器出口二次风压力由定值控制改为随机组负荷变化的滑压控制；将氧量校正回路中校正二次风挡板开度改为校正二次风压力；根据相应给煤机的给煤量指令开环控制各层二次风挡板。优化后，提高了锅炉运行经济性，锅炉排烟温度降低了4．O3℃，机组煤耗降低了

2、0．19g／(kw·h)，一次风机电耗率降低了0．30，送风机电耗率降低了0．03，引风机电耗率降低了0．10，全厂厂用电率降低了0．43。[关键词]330MW机组；锅炉；燃烧；氧量；二次风压力；二次风量；控制[中图分类号]TK323[文献标识码]B[文章编号]1002—3364(2010)07—0062—03IDOl编号]10．3969／j．issn．1002—3364．2010．07．062oPTlMlZATIoNoFTHECoMBUSTIoNCoNTRoLSYSTEMFoRBoILERSEQUIPPED

3、WITH330MWUNITINSHENHUAGUoHUAZHUNGBRPoWERPLANTWANGGuanding，WANGWenbin，ANHuiyong，WANGHuShenhuaGuohuaZhunge'rPowerPlant，Ordos010300，InnerMongolianRegion，PRCAbstract：Directingagainstthedifficultproblemforputtingthecorrectionofsecondaryairflowrateandoxygenconten

4、tinfluegasofboilersequippedwith2X330MWunitsintoautomiticcontrolmode，theoptimizationofcombustioncontrolsystemforsaidboilershasbeencarriedout；thepressurecon—trolofsecondaryairatoulletoftheairpreheaterbeingchangedfromfixedvaluecontroltOslidepres—surecontrolalo

5、ngwithloadvariationoftheunits；thecorrectionofopendagreeforsecondaryairdamperintheoxygen—correctingcircuithasbeenchangedtOcorrectthesecondaryairpressure；thesecondaryairdamperateachleveliscontrolledbyopen—loopaccordingtOcoalfeedcommandsofcot—respondingcoalpul

6、verizer．Afteroptimization，theeconomicefficiencyofboilershasbeensubstantiallyenhanced．thetemperatureofdischargedfluegasbeingdecreasedby4．03℃，thecoalconsumptionofunitsbeingloweredby0．19g／(kW·h)，thepowerconsumptionofprimaryairfanbeingdecreased0．30％，thepowercon

7、sumptionofforceddraftfanbeinglowered0．03，thepowerconsumptionofin—duceddraftfanbeingdecreased0．10％，theauxiliarypowercomsumptioninwholeplantbeingloweredby0．43％．作者简介：IN-r(1977一)，男，内蒙古呼和浩特人，神华国华准格尔电厂设备部热控专业工程师。E—mail：wangguanding@eyou．eomKeywords：330MWunit；boil

8、er；combustion；oxygenconcenration；secondaryairpressurecontrol；seeondaryairflowrate：control2003年，神华国华准格尔电厂2×330Mw机组持高负荷时的二次风压力，将增大节流损失，增加风机控制系统引进了德国西门子公司研制的Profi燃烧优电耗。反之，将导致二次风量过低，燃料不能充分燃化软件，该软件主要解决机组的功率