Simulation Study on Gas-Solid Flow and Combustion Characteristics of Subcritical CFB Unit During Banked Fire

LI Dongxiong; FENG Yindong; CHENG Zhijin; LIU Chengliang; WEI Shaoqing; FENG Hao; XIAO Hongliang; SONG Haifeng

doi:10.19805/j.cnki.jcspe.2026.240794

English Version Journal Login

您当前的位置：

首页 >

文章列表页 >

Simulation Study on Gas-Solid Flow and Combustion Characteristics of Subcritical CFB Unit During Banked Fire

更新时间：2026-10-10

- Simulation Study on Gas-Solid Flow and Combustion Characteristics of Subcritical CFB Unit During Banked Fire
- Chinese Journal of Power Engineering Vol. 46, Issue 4, Pages: 1-11(2026)
- 作者机构：
  
  1. 山西大学电力与建筑学院,山西,太原,030006
  2. 怀柔实验室山西研究院,山西,太原,030032
  3. 晋能控股电力集团有限公司,山西,太原,030002
  4. 北京怀柔实验室,北京,101400
- 作者简介：
- 基金信息：
- DOI：10.19805/j.cnki.jcspe.2026.240794
  CLC： TK229.6
- Published：2026
- 稿件说明：
移动端阅览
李东雄, 丰胤东, 成治瑾, 柳成亮, 魏绍青, 冯浩, 肖红亮, 宋海峰. 亚临界CFB机组压火期间气固流动与燃烧特性模拟研究[J]. 动力工程学报, 2026, 46(4): 1-11.
李东雄, 丰胤东, 成治瑾, 柳成亮, 魏绍青, 冯浩, 肖红亮, 宋海峰. 亚临界CFB机组压火期间气固流动与燃烧特性模拟研究[J]. 动力工程学报, 2026, 46(4): 1-11. DOI： 10.19805/j.cnki.jcspe.2026.240794.

DOI： 10.19805/j.cnki.jcspe.2026.240794

摘要

随着可再生能源的快速发展

传统火电机组在负荷调节和应急响应中的灵活性要求不断提高。针对多地电厂开展CFB锅炉近零负荷调节过程中面临的平稳启动与安全运行问题

开展了压火及扬火再启动模拟研究

深入分析了气固流动、温度变化及氧气浓度变化规律

并探讨了这些因素对燃烧稳定性和安全性的影响。结果表明:压火期间

炉内仍伴随着逐渐减弱的燃烧反应

床料及未燃尽颗粒在停风停煤后向炉底沉降

导致CFB锅炉失去流化能力

炉膛底部氧气浓度显著下降

炉膛上部温度下降最明显

而底部温度变化较缓慢;压火前

NO浓度呈现底部高、上部低的分布

压火期间NO和CO在床层及其周围区域积聚

扬火时

积聚的NO被气流带至炉膛上部

引发排放瞬时超标;尽管压火过程中气流得以恢复

但底部氧气浓度的恢复滞后

局部氧气贫乏的情况仍可能导致燃烧不完全和CO析出;床温预测误差较小

且压火极限床温可以通过实时监测灵活调整

有效降低了操作过程中的安全风险。研究为优化CFB锅炉灵活运行模式下的操作策略和安全管理提供了参考。

Abstract

With the rapid development of renewable energy

the flexibility requirements of traditional thermal power units in load regulation and emergency response were increasing. Aiming at the problems of smooth start-up and safe operation in the process of near-zero load regulation of CFB boilers in many power plants

the simulation study of banked fire and ignition restart was carried out. The laws of gas-solid flow

temperature change and oxygen concentration change were analyzed in depth

and the influence of these factors on combustion stability and safety was discussed. Results show that the furnace is still accompanied by a gradually weakened combustion reaction during the banked fire period. The bed material and unburned particles settle to the bottom of the furnace after stopping the air and coal

resulting in the loss of fluidization capacity of the CFB boiler

the significant decrease of oxygen concentration at the bottom of the furnace

and the obvious decrease of temperature at the upper part of the furnace and slow change of the temperature at the bottom. Before the banked fire operation

the concentration of NO shows a distribution of high at the bottom and low at the upper part. During the banked fire period

NO and CO accumulate in the bed and the surrounding area. During the ignition

the accumulated NO is brought to the upper part of the furnace by the air flow

resulting in instantaneous excessive emission. Although the airflow can be restored during the banked fire process

the recovery of oxygen concentration at the bottom is delayed

and local oxygen deficiency may still lead to incomplete combustion and CO release. The bed temperature prediction error is small

and the bed temperature limit for banked fire can be flexibly adjusted through real-time monitoring

which effectively reduces the safety risk in the operation process. The research provides a model reference for optimizing the operation strategy and safety management of CFB boiler under flexible operation mode.

关键词

Keywords

references

谢克昌. 面向2035年我国能源发展的思考与建议[J]. 中国工程科学, 2022, 24(6): 1-7.XIE Kechang. China's energy development for 2035: strategic thinking and suggestions[J]. Strategic Study of CAE, 2022, 24(6): 1-7.

舒印彪, 张正陵, 汤涌, 等. 新型电力系统构建的若干基本问题[J]. 中国电机工程学报, 2024, 44(21): 8327-8340.SHU Yinbiao, ZHANG Zhengling, TANG Yong, et al. Fundamental issues of new-type power system construction[J]. Proceedings of the CSEE, 2024, 44(21): 8327-8340.

刘玉华, 吕清刚, 高政南, 等. 煤电机组灵活性指标对风光发电调节作用的量化研究[J]. 煤炭学报, 2025, 50(5): 2752-2760.LIU Yuhua, LV Qinggang, GAO Zhengnan, et al. Quantitative study on role of flexibility index of coal-fired power units in regulating wind and solar power generation[J]. Journal of China Coal Society, 2025, 50(5): 2752-2760.

文云峰, 杨游航, 邢鹏翔, 等. 多维因素制约下新能源消纳能力评估方法研究综述[J]. 中国电机工程学报, 2024, 44(1): 127-146.WEN Yunfeng, YANG Youhang, XING Pengxiang, et al. Review on the new energy accommodation capability evaluation methods considering multi-dimensional factors[J]. Proceedings of the CSEE, 2024, 44(1): 127-146.

张智刚, 康重庆. 碳中和目标下构建新型电力系统的挑战与展望[J]. 中国电机工程学报, 2022, 42(8): 2806-2818.ZHANG Zhigang, KANG Chongqing. Challenges and prospects for constructing the new-type power system towards a carbon neutrality future[J]. Proceedings of the CSEE, 2022, 42(8): 2806-2818.

魏一鸣, 余碧莹, 唐葆君, 等. 中国碳达峰碳中和时间表与路线图研究[J]. 北京理工大学学报(社会科学版), 2022, 24(4): 13-26.WEI Yiming, YU Biying, TANG Baojun, et al. Roadmap for achieving China's carbon peak and carbon neutrality pathway[J]. Journal of Beijing Institute of Technology (Social Sciences Edition), 2022, 24(4): 13-26.

杜炳君, 蒋苓, 张扬, 等. 循环流化床锅炉纯氨燃烧排放特性模拟[J]. 动力工程学报, 2025, 45(1): 10-18. DU Bingjun, JIANG Ling, ZHANG Yang, et al. Simulation on emission characteristics of ammonia combustion in a circulating fluidized bed boiler[J]. Journal of Chinese Society of Power Engineering, 2025, 45(1): 10-18.

赵兵, 景杰. "碳达峰、碳中和"目标下火力发电行业的转型与发展[J]. 节能与环保, 2021(5): 32-33.ZHAO Bing, JING Jie. Transformation and development of thermal power industry under the goal of'carbon peaking and carbon neutralization'[J]. Energy Conservation & Environmental Protection, 2021(5): 32-33.

舒印彪, 张丽英, 张运洲, 等. 我国电力碳达峰、碳中和路径研究[J]. 中国工程科学, 2021, 23(6): 1-14.SHU Yinbiao, ZHANG Liying, ZHANG Yunzhou, et al. Carbon peak and carbon neutrality path for China's power industry[J]. Strategic Study of CAE, 2021, 23(6): 1-14.

孙月巧, 郑宏飞, 孔慧. 碳中和背景下煤电转型关键技术研究与展望[J]. 动力工程学报, 2022, 42(11): 1013-1023.SUN Yueqiao, ZHENG Hongfei, KONG Hui. Key technologies and prospects of coal power transformation under carbon neutrality background[J]. Journal of Chinese Society of Power Engineering, 2022, 42(11): 1013-1023.

胡相余, 许仁发, 孟涛, 等. 超超临界二次再热锅炉关键技术研究进展[J]. 煤炭转化, 2022, 45(6): 89-100.HU Xiangyu, XU Renfa, MENG Tao, et al. Research progress on key technology of ultra-supercritical double reheat boiler[J]. Coal Conversion, 2022, 45(6): 89-100.

冯伟忠, 李励. "双碳"目标下煤电机组低碳、零碳和负碳化转型发展路径研究与实践[J]. 发电技术, 2022, 43(3): 452-461.FENG Weizhong, LI Li. Research and practice on development path of low-carbon, zero-carbon and negative carbon transformation of coal-fired power units under'double carbon' targets[J]. Power Generation Technology, 2022, 43(3): 452-461.

吕俊复, 王君峰, 姜孝国, 等. 超超临界循环流化床锅炉技术研发进展[J]. 中国电机工程学报, 2024, 44(17): 6883-6899.LV Junfu, WANG Junfeng, JIANG Xiaoguo, et al. Research and development of ultra-supercritical circulating fluidized bed boiler[J]. Proceedings of the CSEE, 2024, 44(17): 6883-6899.

孙倩, 印江, 牛斌, 等. 300 MW亚临界循环流化床发电机组的全程调峰控制研究[J]. 电力学报, 2020, 35(6): 522-527, 562.SUN Qian, YIN Jiang, NIU Bin, et al. Research on full-process peak regulation control of 300 MW subcritical circulating fluidized bed generator set[J]. Journal of Electric Power, 2020, 35(6): 522-527, 562.

ZHU Shujun, HUI Jicheng, LYU Qigang, et al. Experimental study on pulverized coal combustion preheated by a circulating fluidized bed: preheating characteristics for peak shaving[J]. Fuel, 2022, 324: 124684.

吕俊复, 周托, 张扬, 等. 碳中和目标下循环流化床锅炉技术的展望[J]. 动力工程学报, 2022, 42(11): 1005-1012.LV Junfu, ZHOU Tuo, ZHANG Yang, et al. Prospect of the circulating fluidized bed boiler technology for the goal of carbon neutralization[J]. Journal of Chinese Society of Power Engineering, 2022, 42(11): 1005-1012.

吕俊复, 杨海瑞, 郭庆杰, 等. 水冷方形分离循环流化床锅炉的启动与压火[J]. 电站系统工程, 2000, 16(6): 323-325, 329.LV Junfu, YANG Hairui, GUO Qingjie, et al. Start-up and hold-down performance of a CFB boiler with water cooled square cyclone[J]. Power System Engineering, 2000, 16(6): 323-325, 329.

何映光. 300 MW循环流化床锅炉压火对机组的影响分析[J]. 热力发电, 2009, 38(9): 48-51.HE Yingguang. Analysis about influence of banking fire in 300 MW CFB boiler upon the unit[J]. Thermal Power Generation, 2009, 38(9): 48-51.

施斌, 程文峰, 余武高, 等. 循环流化床锅炉压火保护应用实践[J]. 能源研究与管理, 2019(4): 82-85.SHI Bin, CHENG Wenfeng, YU Wugao, et al. Application of pressure fire protection in CFB boiler[J]. Energy Research and Management, 2019(4): 82-85.

刘众元, 武晓俊. 循环流化床锅炉压火启动调峰技术综述[J]. 热能动力工程, 2024, 39(3): 1-8.LIU Zhongyuan, WU Xiaojun. Review of banked fire and start-up peak regulation technology of circulating fluidized bed boiler[J]. Journal of Engineering for Thermal Energy and Power, 2024, 39(3): 1-8.

乔磊磊, 王孝全, 聂浩, 等. 循环流化床锅炉全负荷调峰特性研究[J]. 中国电机工程学报, 2025, 45(1): 184-193.QIAO Leilei, WANG Xiaoquan, NIE Hao, et al. Investigation on the operation characteristics of circulating fluidized bed boiler unit for full-load regulation[J]. Proceedings of the CSEE, 2025, 45(1): 184-193.

董民中, 任瑞利. 如何延长流化床锅炉的压火维持时间[J]. 节能与环保, 2001(2): 43-44.DONG Minzhong, REN Ruili. How to extend the holding time of the fluidized bed boiler[J]. Energy Conservation & Environmental Protection, 2001(2): 43-44.

申欣, 赵强, 乔晓磊, 等. 超临界CFB锅炉压火特性现场试验与数值模拟[J]. 煤炭学报, 2022, 47(7): 2797-2807.SHEN Xin, ZHAO Qiang, QIAO Xiaolei, et al. Field test and numerical simulation of banked fire characteristics of supercritical CFB boiler[J]. Journal of China Coal Society, 2022, 47(7): 2797-2807.

李东雄, 韩豪杰, 王菁, 等. 循环流化床锅炉数值模拟研究进展[J]. 煤炭转化, 2021, 44(3): 83-95.LI Dongxiong, HAN Haojie, WANG Jing, et al. Research progress of numerical simulation of circulating fluidized bed boiler[J]. Coal Conversion, 2021, 44(3): 83-95.

CHANG Jian, MA Xinrui, WANG Xin, et al. CPFD modeling of hydrodynamics, combustion and NOx emissions in an industrial CFB boiler[J]. Particuology, 2023, 81: 174-188.

LIU Hongpeng, SUN Haiwen, BI Ye, et al. Effect of secondary air on NO emission in a 440 t/h circulating fluidized bed boiler based on CPFD method[J]. Particuology, 2023, 83: 18-31.

LIU Mingyu, CHEN Sheng, ZHU Hongwei, et al. Numerical investigation of ammonia/coal co-combustion in a low NOx swirl burner[J]. Energy, 2023, 282: 128358.

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Research Progress on Combustion Characteristics and Turbine Aerothermal Performance of Hydrogen Gas Turbines

Numerical Simulation of Flow and Emission Characteristics in Hydrogen-blended Combustion of Gas Turbines

Emission and Risk Assessment of Organic Pollutants in the Co-combustion Process of Oil-based Cuttings in a Circulating Fluidized Bed

Simulation Study on Gas-Solid Flow and Combustion Characteristics of Pure Oxygen Combustion Circulating Fluidized Bed Boiler

Research on Trading Decision of Wind-Photovoltaic-Gas Combined System Participating in Day-ahead and Real-time Markets Considering Wind and Photovoltaic Uncertainty

Related Author

BAI Bo

ZHANG Hao

HUANG Hai

LI Zhigang

LI Jun

ZHU Han

LI Li

ZHOU Leping

Related Institution

Institute of Turbomachinery, Xi'an Jiaotong University

Key Laboratory of Power Station Energy Transfer Conversion and System, Ministry of Education, North China Electric Power University

School of Energy, Power and Mechanical Engineering, North China Electric Power University

Research Institute of Solid Waste Management, Chinese Research Academy of Environmental Sciences

Energy Power and Mechanical Engineering Department, North China Electric Power University

AI问答

⁰