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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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600mw机组锅炉空气分级低nox燃烧数值模拟
, PP. 79-84
Keywords: 锅炉,四角切圆燃烧器,nox排放,空气分级燃烧,数值模拟
Abstract:
某600mw机组四角切圆锅炉在满负荷运行方式下nox排放浓度约400mg/m3,不能满足国家对电站锅炉nox减排的要求。对此,采用高级复合式空气分级低nox燃烧技术和炉膛布置相匹配的方法,降低nox排放量。同时,以数值模拟软件fluent为工具,采用k-ε双方程模型,对燃烧器拟改进结构与原始结构锅炉煤粉燃烧过程和nox生成特性进行模拟并对比。结果表明:采用空气分级燃烧后,炉膛温度场、速度场以及co、o2的排放量均有相应的变化,且nox排放量大大降低;数值模拟结果和试验结果的计算误差在5%以内,可准确预测燃烧器改进后nox生成与排放量,为燃烧器的改造提供一定的理论依据。
| [1] | 李芳芹,魏敦崧,马京程,等.燃煤锅炉空气分级燃烧降低nox排放的数值模拟[j].燃料化学学报,2004,32(5):537-541.lifangqin,weidunsong,majingcheng,etal.numericalsimulationoflow-noxemissioninacoal-firedutilityboilerwithstaged-aircombustion[j].journaloffuelchemistryandtechnology,2004,32(5):537-541.
|
| [2] | 刘霞,高小涛,肖军,等.400t/h煤粉锅炉分级送风低nox燃烧数值模拟[j].燃烧科学与技术,2006,12(3):274-280.liuxia,gaoxiaotao,xiaojun,etal.numericalsimulationoflownoxcombustionwithstaged-airina400t/hpulverizedcoal-firedboiler[j].journalofcombustionscienceandtechnology,2006,12(3):274-280.
|
| [3] | stanmorebr,visonasp.predictionofnoxemissionsfromanumberofcoal-firedpowerstationboilers[j].fuelprocessingtechnology,2000,64:25-46.
|
| [4] | xum,azevedojlt,carvalhomg.modellingofthecombustionprocessandnoxemissioninautilityboiler[j].fuel,2000,79(13):1611-1619.
|
| [5] | 张颉,孙锐,吴少华,等.200mw旋流燃烧方式煤粉炉炉内燃烧试验和数值研究[j].中国电机工程学报,2003,23(8):215-220.zhangxie,sunrui,wushaohua,etal.anexperimentalandnumericalstudyonswirlingcombustionprocessina200mwpulverizedcoal-firedboiler[j].proceedingsofthecsee,2003,23(8):215-220.
|
| [6] | 张颉,吴少华,孙锐,等.350mw燃煤锅炉燃烧过程和nox排放的数值研究[j].哈尔滨工业大学学报,2004,36(9):1239-1243.zhangxie,wushaohua,sunrui,etal.numericalstudyoncombustionprocessandnoxemissionsina350mwpulverizedcoalfiredboiler[j].journalofharbininstituteoftechnology,2004,36(9):1239-1243.
|
| [7] | 周立行.湍流两相流动与燃烧的数值模拟[m].北京:清华大学出版社,1991.zhoulixing.numericalsimulationofturbulenttwo-phaseflowandcombustion[m].beijing:tsinghuauniversitypress,1991(inchinese).
|
| [8] | 王振,胡璨元,罗永浩.全尺寸燃煤锅炉nox排放多影响因素的数值模拟分析[j].锅炉技术,2013,44(1):41-47.wangzhen,hucanyuan,luoyonghao.numericalsimulationandanalysisontheinfluencingfactorsofnoxemissioninfullscalecoalfiredutilityboilers[j].boilertechnology,2013,44(1):41-47.
|
| [9] | 段二朋,孙保民,郭永红,等.800mw旋流对冲燃烧锅炉低nox改造的数值模拟[j].动力工程学报,2012,32(11):825-829.duanerpeng,sunbaomin,guoyonghong,etal.numericalsimulationonan800mwswirl-opposedfiringboilerretrofittedforlownoxemission[j].journalofpowerengineering,2012,32(11):825-829.
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