配风方式对600 MW“W”型火焰锅炉爆管的影响

曹小玲,李帆,刘永文,苏明

电力建设 ›› 2013, Vol. 34 ›› Issue (3) : 59-63.

PDF(1336 KB)
PDF(1336 KB)
电力建设 ›› 2013, Vol. 34 ›› Issue (3) : 59-63.
发电技术

配风方式对600 MW“W”型火焰锅炉爆管的影响

  • 曹小玲1,李帆1,刘永文2,苏明2
作者信息 +

Impact of Air Distribution Mode on Pipe Burst in 600 MW W-flame Boiler

  • CAO Xiaoling1,LI Fan1,LIU Yongwen2,SU Ming2
Author information +
文章历史 +

摘要

为研究某超临界600 MW“W”型火焰锅炉受热面频繁爆管的原因,对锅炉炉内燃烧过程进行了数值模拟,以分析不同配风方式对锅炉受热面爆管的影响。计算结果表明:实际工况下,炉膛中心截面温度场整体上呈“W”型分布,温度场比较对称;当前、后拱上一次风量和内二次风量比为5/6、6/5时,炉内温度场变化不敏感,炉内没有出现高温火焰冲刷受热面;当前、后拱上外二次风量比和前、后墙上分级风为5/6和6/5时,炉内温度场出现偏斜,炉内高温火焰冲刷冷灰斗严重,这可能会导致冷灰斗受热面爆管。

Abstract

In order to study the reason of frequent pipe burst of heating surface in a 600 MW supercritical W-flame boiler, the numerical simulation of combustion process in boiler is carried out to study the impact of air distribution modes on pipe burst of boiler heating surface. The results show that the temperature field at furnace center is in W shape distribution and symmetric under actual operation conditions. The change of temperature field is not sensitive in the furnace when the ratios of primary air and inside secondary air are 5/6 and 6/5 in front and back arch, and the temperature flame doesn't sweep over the heating surface; however, when the ratios of outside secondary air in front and rear arch and the graded wind in front and back wall are 5/6 and 6/5, the furnace temperature field appears skew, and the temperature flame badly sweeps over the cold ash hopper, which may cause pipe burst of heating surface at cold ash hopper.

关键词

“W”型火焰锅炉 / 配风方式 / 爆管 / 温度场 / 数值模拟

Key words

W-flame boiler / air distribution mode / pipe burst / temperature field / numerical simulation

引用本文

导出引用
曹小玲,李帆,刘永文,苏明. 配风方式对600 MW“W”型火焰锅炉爆管的影响[J]. 电力建设. 2013, 34(3): 59-63
CAO Xiaoling,LI Fan,LIU Yongwen,SU Ming2. Impact of Air Distribution Mode on Pipe Burst in 600 MW W-flame Boiler[J]. Electric Power Construction. 2013, 34(3): 59-63

参考文献

[1]王为术,毕勤成,朱晓静. 直流锅炉水冷壁热敏感性的研究[J].动力工程,2009,29(6):522-527.



[2]付文华.“W”型火焰锅炉屏过爆管原因分析及对策[J].电力学报,2010,25(6):504-506.



[3]王为术,朱晓静,毕勤成,等.超临界 W 型火焰锅炉垂直水冷壁低质量流速条件下热敏感性研究[J].中国电机工程学报,2010,30(20):15-21.



[4]申春梅,孙锐,吴少华.1 GW单炉膛双切圆炉内煤粉燃烧过程的数值模拟[J].中国电机工程学报,2006,26(15):51-57.



[5]潘维,池作和,斯东波,等.200 MW四角切圆燃烧锅炉改造工况数值模拟[J].中国电机工程学报,2005,25(8):110-115.[6]刘泰生,周武,叶恩清.燃尽风对炉内流动和燃烧过程影响的数值模拟[J].动力工程,2006,26(1):116-120.



[7]方庆艳,周怀春,汪华剑,等.3种型号W火焰锅炉结渣特性的数值模拟[J].动力工程,2008,28(5):657-663.



[8]Luis I D,Cristobal C,Antonio C. Modeling of pulverized coal boilers:Review and validation of on-line simulation techniques[J].Progress in Energy and Combustion Science,2005,25(10):1516-1533.



[9]李芳芹,魏敦崧,马京程,等.燃煤锅炉空气分级燃烧降低NO排放的数值模拟[J].燃料化学学报,2004,32(5):537-541.



[10]周武,庄正宁,刘泰生,等.切向燃烧锅炉炉膛结渣问题的研究[J].中国电机工程学报,2005,25(4):131-135.



[11]庞力平,孙保民,Salcudean M E.电站锅炉受热面高温积灰的数值模拟[J].中国电机工程学报,2004,24(10):219-223.



[12]Yin C G,Caillat S,Harison J L,et al. Investigation of the flow,combustion,heat transfer and emissions from 609 MW utility tangentially fired pulverized coal boiler[J]. Fuel,2002,81(8):997-1006.



[13]Arauzo P J, Williams A. Integration of CFD codes and advanced combustion models for quantitative burnout determination[J]. Fuel,2007,86(15):2283-2290.



[14]湛志钢,方庆艳.W火焰锅炉结渣特性的数值模拟研究[J].电站系统工程,2006,22(1):30-32.



[15]曹小玲,皮正仁,彭好义,等. 600 MW“W”型火焰锅炉炉内燃烧过程的数值模拟[J]. 中南大学学报:自然科学版,2012,43(3):1185-1191.



[16]陈玉忠,石践,罗小鹏,等.新型缝隙式直流燃烧器的研究与应用[J].中国电力,2012,45(4):51-53.



[17]黄伟,寻新,刘复平,等.600 MW超临界“W”型锅炉机组主蒸汽温度低的分析及处理[J].中国电力,2010,43(10):31-34.

基金

国家自然科学基金(51276023);湖南省高校创新平台基金(09K069);湖南省科技厅计划项目(2011GK3111)。


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