OALib Journal期刊
ISSN: 2333-9721
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提高再热汽温对锅炉和机组热力特性的影响及经济性分析
, PP. 19-23
Keywords: 再热汽温,热力系统,再热器,热力计算,热力特性,等效热降,循环效率
Abstract:
以某亚临界335mw机组为例,计算再热蒸汽温度(再热汽温)提高时锅炉各个受热面的吸热量及烟气进口温度等参量的变化,得出提高再热汽温对锅炉及机组热力特性的影响程度并进行经济性分析。结果表明:通过增加再热受热面面积提高再热汽温对锅炉炉膛热工况和排烟温度的影响较小;布置在中、高温再热器之后的对流受热面的吸热量和烟气进口温度随再热汽温的提高逐渐降低,且其变化幅度沿烟气流程依次减小;再热汽温每提高10℃机组容量增大约5mw,循环效率提高约0.85%;对再热汽温从538℃提高至566℃进行了具体方案设计,改造后每年可获得收益395.72万元。
References
[1] | weitzelps.steamgeneratorforadvancedultra�supercriticalpowerplants700℃to760℃[c].asme2011powerconference,denver,2011.
|
[2] | 罗韶辉,李春宏,潘国清.1000mw机组塔式锅炉再热汽温偏低的原因分析及调整[j].热力发电,2012,41(11):55�58.luoshaohui,lichunhong,panguoqing.causeanalysisandexperimentalstudyonlowreheatsteamtemperatureoftowertypeboilerfora1000mwunit[j].thermalpowergeneration,2012,41(11):55�58.
|
[3] | 李汝萍,何曙勇,李志坚.锅炉再热汽温偏低的原因分析及对策研究[j].浙江电力,2013(4):38�41.liruping,heshuyong,lizhijian.researchoncausesandcountermeasuresagainstlowreheatedsteamtemperatureofboiler[j].zhejiangelectricpower,2013(4):38�41.
|
[4] | 孟建国,曹建臣,严林博,等.通过受热面改造解决再热汽温低问题[j].华北电力技术,2010(4):27�31.mengjianguo,caojianchen,yanlinbo,etal.heat�exchangesurfacereconstructiontosettleunderheatingofreheatsteam[j].northchinaelectricpower,2010(4):27�31.
|
[5] | 赵振宁,王晶晶,徐立伟,等.300mw锅炉再热汽温低的原因分析及改造[j].中国电力,2012,45(12):21�25.zhaozhenning,wangjingjing,xuliwei,etal.causeanalysisforlowreheatsteamtemperatureandtransformationsof300mwboilers[j].electricpower,2012,45(12):21�25.
|
[6] | 车得福,庄正宁,李军,等.锅炉[m].西安:西安交通大学出版社,2008.chedefu,zhuangzhengning,lijun,etal.boiler[m].xi'an:xi'anjiaotonguniversitypress,2008(inchinese).
|
[7] | 王桂玲,郭蕾.摆动式燃烧器调节再热汽温特性分析[j].锅炉制造,2008(4):32�34,39.wangguiling,guolei.featureanalysisofreheatedsteamtemperatureadjustedbytiltingburner[j].boilermanufacturing,2008(4):32�34,39.
|
[8] | 林万超.火电厂热系统节能理论[m].西安:西安交通大学出版社,1994.linwanchao.energysavingtheoryforthermalsysteminthermalpowerplant[m].xi'an:xi'anjiaotonguniversitypress,1994(inchinese).
|
[9] | 吴跃明,王永成.1000t/h直流锅炉降汽温运行的经济与安全性分析[j].华东电力,1995(5):38�41.wuyueming,wangyongcheng.economyandsecurityanalysisforloweringsteamtemperatureoperationofa1000t/honce�throughboiler[j].eastchinaelectricpower,1995(5):38�41.
|
[10] | 翟德双.660mw超超临界п型锅炉再热汽温623℃[j].中国电力,2013(4):28�31.zhaideshuang.explorationofadopting623℃reheatsteamtemperaturein660mwultra�supercriticaltypeпboilers[j].electricpower,2013(4):28�31.
|
[11] | viswanathanr,henryjf,tanzoshj,etal.usprogramonmaterialstechnologyforultra�supercriticalcoalpowerplants[j].journalofmaterialsengineeringandperformance,2005,3(22):281�292.
|
[12] | usty,goncag,kayadelenhk.determinationofoptimumreheatpressuresforsingleanddoublereheatirreversiblerankinecycle[j].journaloftheenergyinstitute,2011,4(84):215�219.
|
[13] | 常雪梅,王欣,孙龙彪,等.军粮城发电厂670t/h锅炉提高再热汽温探讨[j].天津电力技术,2002(3):39�41.changxuemei,wangxin,sunlongbiao,etal.investigationonimprovingreheatsteamtemperatureofthe670t/hboilerinjunliangchengplant[j].tianjinelectricpowertechnology,2002(3):39�41.
|
[14] | 孙科.1913t/h超临界压力锅炉再热汽温低的原因分析[j].发电设备,2010(4):265�267,291.sunke.causeanalysisonlowreheatsteamtemperaturesofa1913t/hsupercriticalpressureboiler[j].powerequipment,2010(4):265�267,291.
|
[15] | 万云伟,张海燕.华电贵港电厂超临界锅炉再热汽温长期偏低的分析与对策[j].能源与环境,2009(5):35�37.wanyunwei,zhanghaiyan.analysisandsolutiononlowreheatsteamtemperatureofthesupercriticalboilerinhuadianguigangplant[j].energyandenvironment,2009(5):35�37.
|
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