IDEAS home Printed from https://ideas.repec.org/a/gam/jeners/v15y2022i10p3604-d815840.html
   My bibliography  Save this article

Study on the Uniformity of Secondary Air of a 660 MW Ultra-Supercritical CFB Boiler

Author

Listed:
  • Li Nie

    (Dongfang Boiler Group Co., Ltd., Chengdu 611731, China)

  • Jiayi Lu

    (Dongfang Boiler Group Co., Ltd., Chengdu 611731, China)

  • Qigang Deng

    (Dongfang Boiler Group Co., Ltd., Chengdu 611731, China)

  • Liming Gong

    (Dongfang Boiler Group Co., Ltd., Chengdu 611731, China)

  • Dayong Xue

    (Dongfang Boiler Group Co., Ltd., Chengdu 611731, China)

  • Zhongzhi Yang

    (Key Laboratory of Low-Grade Energy Utilization Technologies and Systems, Ministry of Education of PRC, Chongqing University, Chongqing 400044, China)

  • Xiaofeng Lu

    (Key Laboratory of Low-Grade Energy Utilization Technologies and Systems, Ministry of Education of PRC, Chongqing University, Chongqing 400044, China)

Abstract

Based on the field test of a 600 MW supercritical circulating-fluidized bed boiler, this paper optimizes the secondary air pipe layout scheme of a 660 MW ultra-supercritical circulating fluidized bed boiler with a similar furnace structure and carried out a numerical simulation on its air distribution uniformity. The secondary air box of the 660 MW ultra-supercritical circulating-fluidized bed boiler adopts a variable section design, and the secondary air branch pipe adopts a separate air inlet mode. The experimental results showed that the oxygen concentration was uniform near the rear wall, but all exhibited a “decrease–increase–decrease” profile along the horizontal line, which indicated that the trajectory of the secondary air jet was first in the shape of bending downward and then upward. To achieve a more uniform secondary air distribution for supercritical CFB boilers, further optimization of the layout of the bellows and branch pipes should be considered. Numerical results showed that the deviation rate of the internal and lower secondary air reached 17%, and there was optimization space for the secondary air branch pipe layout of the boiler. Its uniformity can be increased by adding valves and other measures. The velocity deviation of the secondary air of the 660 MW ultra-supercritical circulating-fluidized bed boiler can be within 3% by means of separate air supply and pipe diameter change, and better uniform air supply can be achieved to reduce the speed deviation by adding valves and adjusting the combustion.

Suggested Citation

  • Li Nie & Jiayi Lu & Qigang Deng & Liming Gong & Dayong Xue & Zhongzhi Yang & Xiaofeng Lu, 2022. "Study on the Uniformity of Secondary Air of a 660 MW Ultra-Supercritical CFB Boiler," Energies, MDPI, vol. 15(10), pages 1-12, May.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:10:p:3604-:d:815840
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1996-1073/15/10/3604/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/1996-1073/15/10/3604/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Junjie Lin & Kun Luo & Shuai Wang & Liyan Sun & Jianren Fan, 2020. "Particle-Scale Simulation of Solid Mixing Characteristics of Binary Particles in a Bubbling Fluidized Bed," Energies, MDPI, vol. 13(17), pages 1-19, August.
    2. Yimin Deng & Renaud Ansart & Jan Baeyens & Huili Zhang, 2019. "Flue Gas Desulphurization in Circulating Fluidized Beds," Energies, MDPI, vol. 12(20), pages 1-19, October.
    3. Xuemin Liu & Hairui Yang & Junfu Lyu, 2020. "Optimization of Fluidization State of a Circulating Fluidized Bed Boiler for Economical Operation," Energies, MDPI, vol. 13(2), pages 1-20, January.
    Full references (including those not matched with items on IDEAS)

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Yingai Jin & Yanwei Sun & Yuanbo Zhang & Zhipeng Jiang, 2022. "Research on Air Distribution Control Strategy of Supercritical Boiler," Energies, MDPI, vol. 16(1), pages 1-19, December.
    2. Guo Li & Xiangyu Tao & Zonglong Zhang & Chen Yang & Qigang Deng & Li Nie & Wei He & Weicheng Li & Jiayi Lu & Liming Gong, 2023. "Dynamic Simulation of MFT and BT Processes on a 660 MW Ultra-Supercritical Circulating Fluidized Bed Boiler," Energies, MDPI, vol. 16(5), pages 1-13, February.
    3. Boyu Deng & Yi Zhang & Hairui Yang, 2022. "Operation Optimization of Circulating Fluidized Bed Boilers Integration of Variable Renewables," Energies, MDPI, vol. 15(16), pages 1-3, August.

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Jin Yan & Xiaofeng Lu & Xiong Zheng & Rui Xue & Xiujian Lei & Xuchen Fan & Shirong Liu, 2020. "Experimental Investigations on Lateral Dispersion Coefficients of Fuel Particles in Large-Scale Circulating Fluidized Bed Boilers with Different Coal Feeding Modes," Energies, MDPI, vol. 13(23), pages 1-17, December.
    2. Xueshen Wang & Zheng Gan & Shengwei Xin & Chunzhen Yang, 2023. "Study on Gas–Solid Two–Phase Flow Characteristics of One–Furnace with Two–Tower Semi–Dry Desulfurization in Circulating Fluidized Bed Boiler," Energies, MDPI, vol. 16(4), pages 1-13, February.
    3. Bartocci, Pietro & Abad, Alberto & Mattisson, Tobias & Cabello, Arturo & Loscertales, Margarita de las Obras & Negredo, Teresa Mendiara & Zampilli, Mauro & Taiana, Andrea & Serra, Angela & Arauzo, Inm, 2022. "Bioenergy with Carbon Capture and Storage (BECCS) developed by coupling a Pressurised Chemical Looping combustor with a turbo expander: How to optimize plant efficiency," Renewable and Sustainable Energy Reviews, Elsevier, vol. 169(C).
    4. Yahui Zhou & Shaobo Liu & Yunguo Liu & Xiaofei Tan & Ni Liu & Jun Wen, 2020. "Efficient Removal 17-Estradiol by Graphene-Like Magnetic Sawdust Biochar: Preparation Condition and Adsorption Mechanism," IJERPH, MDPI, vol. 17(22), pages 1-15, November.
    5. Jin Yan & Xiaofeng Lu & Changfei Zhang & Qianjun Li & Jinping Wang & Shirong Liu & Xiong Zheng & Xuchen Fan, 2021. "An Experimental Study on the Characteristics of NO x Distributions at the SNCR Inlets of a Large-Scale CFB Boiler," Energies, MDPI, vol. 14(5), pages 1-15, February.
    6. Costa, Alexis & Coppitters, Diederik & Dubois, Lionel & Contino, Francesco & Thomas, Diane & De Weireld, Guy, 2024. "Energy, exergy, economic and environmental (4E) analysis of a cryogenic carbon purification unit with membrane for oxyfuel cement plant flue gas," Applied Energy, Elsevier, vol. 357(C).
    7. Lin, Junjie & Luo, Kun & Wang, Shuai & Sun, Liyan & Fan, Jianren, 2022. "Particle-scale study of coal-direct chemical looping combustion (CLC)," Energy, Elsevier, vol. 250(C).
    8. Boyu Deng & Tuo Zhou & Shuangming Zhang & Haowen Wu & Xiaoguo Jiang & Man Zhang & Hairui Yang, 2022. "Safety Analysis on the Heating Surfaces in the 660 MW Ultra-Supercritical CFB Boiler under Sudden Electricity Failure," Energies, MDPI, vol. 15(21), pages 1-15, October.
    9. De Coster, Jonas & Liu, Jia & Van den Broeck, Rob & Rossi, Barbara & Dewil, Raf & Appels, Lise, 2020. "Influence of electrochemical advanced oxidation on the long-term operation of an Upflow Anaerobic Sludge Blanket (UASB) reactor treating 4-chlorophenol containing wastewater," Renewable Energy, Elsevier, vol. 159(C), pages 683-692.
    10. Baoping Gong & Hao Cheng & Yongjin Feng & Xiaofang Luo & Long Wang & Xiaoyu Wang, 2021. "Effect of Pebble Size Distribution and Wall Effect on Inner Packing Structure and Contact Force Distribution in Tritium Breeder Pebble Bed," Energies, MDPI, vol. 14(2), pages 1-22, January.
    11. Li, Shuo & Baeyens, Jan & Dewil, Raf & Appels, Lise & Zhang, Huili & Deng, Yimin, 2021. "Advances in rigid porous high temperature filters," Renewable and Sustainable Energy Reviews, Elsevier, vol. 139(C).
    12. Kalisz, Sylwester & Wejkowski, Robert & Maj, Izabella & Garbacz, Przemysław, 2023. "A novel approach to the dry desulfurization process by means of sodium bicarbonate: A full-scale study on SO2 emission and geochemistry of fly ash," Energy, Elsevier, vol. 279(C).
    13. Boyu Deng & Yi Zhang & Hairui Yang, 2022. "Operation Optimization of Circulating Fluidized Bed Boilers Integration of Variable Renewables," Energies, MDPI, vol. 15(16), pages 1-3, August.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:gam:jeners:v:15:y:2022:i:10:p:3604-:d:815840. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.