某600 MW锅炉低NOx燃烧数值模拟研究及优化

doi:10.11930/j.issn.1004-9649.201806160

中国电力 ›› 2018, Vol. 51 ›› Issue (10): 164-170.DOI: 10.11930/j.issn.1004-9649.201806160

某600 MW锅炉低NO_x燃烧数值模拟研究及优化

李汝萍¹, 樊印龙², 童家麟¹, 齐晓娟³, 吕洪坤¹, 李剑¹, 丁历威¹

1. 国网浙江省电力有限公司电力科学研究院, 浙江杭州 310014;
2. 浙江意能电力科技有限公司, 浙江杭州 310014;
3. 杭州意能电力技术有限公司, 浙江杭州 310014

收稿日期:2018-07-04 修回日期:2018-08-01 出版日期:2018-10-05 发布日期:2018-10-12
作者简介:李汝萍(1965-),女,高级工程师,从事锅炉燃烧调整、节能减排方面研究,E-mail:113559030@qq.com

Numerical Simulation and Optimization of Low NO_x Combustion Characteristics for a 600 MW Boiler

LI Ruping¹, FAN Yinlong², TONG Jialin¹, QI Xiaojuan³, LÜ Hongkun¹, LI Jian¹, DING Liwei¹

1. Electric Power Research Institute of State Grid Zhejiang Electric Power Co., Ltd., Hangzhou 310014, China;
2. Zhejiang E. Energy Electric Science Co., Ltd., Hangzhou 310014, China;
3. Hangzhou Yineng Electric Technology Co., Ltd., Hangzhou 310014, China

Received:2018-07-04 Revised:2018-08-01 Online:2018-10-05 Published:2018-10-12

摘要/Abstract

摘要： 某600 MW亚临界锅炉低氮燃烧改造后存在局部高温腐蚀现象严重、再热汽温偏差较大的问题。通过数值模拟研究了二次风存在的不均匀性对锅炉贴壁还原性气氛、炉膛出口煤粉燃尽率、烟气温度偏差以及炉底渣量的影响，并对托底二次风量进行了优化。结果表明，通过提高二次风量均匀性，后墙绝大部分区域平均CO体积分数从4%降至3%，煤粉燃尽率、炉膛出口烟温偏差也得到改善，但炉膛出口NO_x体积分数略有增加；托底二次风量增加后，底渣量大幅降低，冷灰斗区域高温腐蚀现象亦有望得到改善。

关键词: 燃煤电厂, 锅炉, 高温腐蚀, 数值模拟, 燃烧调整, 托底二次风, 还原性气氛

Abstract: The problems of serious high-temperature corrosion and reheat steam temperature deviation have been in existence in a 600 MW subcritical boiler since its ultra-low NO_x combustion retrofit. In this paper, by virtue of numerical simulation, the effect of the unevenness of the secondary air on the reductive atmosphere near the water walls, the burnout rate at the furnace outlet as well as the flue gas temperature deviation and the slag volume is studied. Then, the bottom secondary air is optimized. The results indicate that after increasing the degree of the uniformity of the secondary air volume, the CO volume fraction declines from 4% to 3% at most of the rear wall. The burnout rate and the furnace outlet flue gas temperature deviation are improved obviously despite of slight increase of the NO_x volume fraction at the furnace outlet. The slag volume is reduced substantially and the high-temperature corrosion is also expected to be improved with the increase of the bottom secondary air volume.

Key words: coal-fired power plant, boiler, high-temperature corrosion, numerical simulation, combustion adjustment, bottom secondary air, reducing atmosphere

中图分类号:

TK227.1

李汝萍, 樊印龙, 童家麟, 齐晓娟, 吕洪坤, 李剑, 丁历威. 某600 MW锅炉低NO_x燃烧数值模拟研究及优化[J]. 中国电力, 2018, 51(10): 164-170.

LI Ruping, FAN Yinlong, TONG Jialin, QI Xiaojuan, LÜ Hongkun, LI Jian, DING Liwei. Numerical Simulation and Optimization of Low NO_x Combustion Characteristics for a 600 MW Boiler[J]. Electric Power, 2018, 51(10): 164-170.

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https://www.electricpower.com.cn/CN/Y2018/V51/I10/164

参考文献

[1] 刘昕昶, 鄢晓忠, 刘泽龙, 等. 气氛条件对超临界锅炉高温腐蚀的影响[J]. 过程工程学报, 2017, 17(4):763-770 LIU Xinchang, YAN Xiaozhong, LIU Zelong, et al. Influence of atmospheric conditions on high temperature corrosion of waterwall of supercritical boiler[J]. The Chinese Journal of Process Engineering, 2017, 17(4):763-770
[2] 吕洪坤, 童家麟, 常毅君, 等. 超超临界锅炉低NO_x优化对高温腐蚀的影响[J]. 热能动力工程, 2017, 32(9):109-114 LÜ Hongkun, TONG Jialin, CHANG Yijun, et al. Influence of low NO_x combustion optimization on the high-temperature corrosion for an ultra-supercritical boiler[J]. Journal of Engineering for Thermal Energy and Power, 2017, 32(9):109-114
[3] 刘昕昶, 鄢晓忠, 敬佩, 等. 660 MW超临界对冲火焰锅炉水冷壁高温腐蚀原因探究[J]. 中国电力, 2017, 50(5):7-12 LIU Xinchang, YAN Xiaozhong, JING Pei, et al. Study on the cause of high-temperature corrosion of water wall tubes in a 660-MW supercritical opposed firing boiler[J]. Electric Power, 2017, 50(5):7-12
[4] 李永生, 刘建民, 陈国庆, 等. 对冲旋流燃烧锅炉侧墙水冷壁近壁区还原性气氛分布特性[J]. 动力工程学报, 2017, 37(7):513-519, 539 LI Yongsheng, LIU Jianmin, CHEN Guoqing, et al. Distribution characteristics of reductive atmosphere close to the water wall of an opposed firing boiler[J]. Journal of Chinese Society of Power Engineering, 2017, 37(7):513-519, 539
[5] 贺桂林, 张晓宇. 600 MW锅炉低氮燃烧器改造炉膛高温腐蚀分析[J]. 中国电力, 2017, 50(10):110-115 HE Guilin, ZHANG Xiaoyu. Analysis on high temperature corrosion of a 600 MW boiler furnace after low NO_x combustor retrofitting[J]. Electric Power, 2017, 50(10):110-115
[6] 李敏, 邱纪华, 向军, 等. 锅炉水冷壁高温腐蚀运行工况的防腐模拟[J]. 中国电机工程学报, 2002, 22(7):150-154 LI Min, QIU Jihua, XIANG Jun, et al. An anti-corrosion simulation for the high-temperature corrosion on boiler water-wall during different operation[J]. Proceedings of the CSEE, 2002, 22(7):150-154
[7] 林俐, 邹兰青, 周鹏, 等. 规模风电并网条件下火电机组深度调峰的多角度经济性分析[J]. 电力系统自动化, 2017, 41(7):21-27 LIN Li, ZOU Lanqing, ZHOU Peng, et al. Multi-angle economic analysis on deep park regulation thermal power units with large-scale wind power integration[J]. Automation of Electric Power Systems, 2017, 41(7):21-27
[8] 李汝萍, 童家麟, 齐晓娟. 某亚临界锅炉低氮燃烧器改造后高温腐蚀控制[J]. 锅炉技术, 2018, 49(3):51-56 LI Ruping, TONG Jialin, QI Xiaojuan. The control of high-temperature corrosion after low NO_x combustion retrofit for a subcritical boiler[J]. Boiler Technology, 2018, 49(3):51-56
[9] 齐晓娟, 童家麟, 吕洪坤, 等. 1000 MW超超临界锅炉生物质与煤粉混烧数值模拟研究[J]. 浙江电力, 2017, 36(5):29-33 QI Xiaojuan, TONG Jialin, LÜ Hongkun, et al. Numerical simulation of co-firing of coal and biomass in a 1000 MW ultra-supercritical boiler[J]. Zhejiang Electric Power, 2017, 36(5):29-33
[10] 周力行. 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.
[11] 刘煜, 李冠华, 闫安民. 挥发分氮和焦炭氮对N₂O生成的相对贡献的研究方法[J]. 中国电机工程学报, 2000, 20(3):71-75 LIU Yu, LI Guanhua, YAN Anmin. Research method of relative contribution of volatile-N and char-N to N₂O formation based on coal/char respective combustion experiment:discussion on experiment and calculation[J]. Proceedings of the CSEE, 2000, 20(3):71-75
[12] 周永刚, 李培, 敖翔, 等. 基于燃烧均匀性的对冲燃烧锅炉高温腐蚀抑制[J]. 浙江大学学报(工学版), 2015, 49(9):1768-1775 ZHOU Yonggang, LI Pei, AO Xiang, et al. High temperature corrosion inhibition for opposed firing boiler based on combustion distribution evenness[J]. Journal of Zhejiang University (Engineering Science), 2015, 49(9):1768-1775
[13] 田登峰, 方庆艳, 谭鹏, 等. 燃烧器上摆角度对四角切圆锅炉再热蒸汽温度偏差影响的数值模拟[J]. 化工学报, 2015, 66(7):2702-2708 TIAN Dengfeng, FANG Qingyan, TAN Peng, et al. Numerical simulation on effect of burner tilting up angle on reheat steam temperature deviation for tangentially fired pulverized-coal boiler[J]. CIESC Journal, 2015, 66(7):2702-2708

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某600 MW锅炉低NO_x燃烧数值模拟研究及优化

Numerical Simulation and Optimization of Low NO_x Combustion Characteristics for a 600 MW Boiler

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某600 MW锅炉低NOx燃烧数值模拟研究及优化

Numerical Simulation and Optimization of Low NOx Combustion Characteristics for a 600 MW Boiler

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某600 MW锅炉低NO_x燃烧数值模拟研究及优化

Numerical Simulation and Optimization of Low NO_x Combustion Characteristics for a 600 MW Boiler