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Research and Application on Bed Material Preparation System of CFB Boiler

Received: 7 December 2020    Accepted: 22 December 2020    Published: 31 December 2020
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Abstract

This paper introduces a technology of preparing bed material with bottom slag of circulating fluidized bed boiler, and designs the system of filling the bed material into the furnace, which has been applied in engineering. This technology uses bottom slag to prepare bed material. Through screening treatment of developed ultra-fine roller screen, the bed material with particle size meeting combustion requirements is prepared and fed into fluidized bed furnace. It not only ensures the combustion effect of the boiler, but also saves a lot of bed material procurement and operation costs, at the same time, it reduces the discharge of boiler bottom slag, which is conducive to reducing pollutant emission. Moreover, some limestone which is not involved in the desulfurization reaction in the furnace is screened out and returned to the furnace again as bed material, so as to improve the utilization rate of limestone powder. The success of this system in engineering application provides a low-cost and reliable new bed material preparation and filling method for the industry, and provides a reliable guarantee for the combustion of CFB boilers. The system meets the requirements of energy conservation and environmental protection, enriches the auxiliary system of CFB boiler, improves the supporting level of auxiliary system of CFB boiler, and further promotes the application of clean combustion fluidized bed unit.

Published in International Journal of Energy and Power Engineering (Volume 9, Issue 6)
DOI 10.11648/j.ijepe.20200906.13
Page(s) 108-114
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2024. Published by Science Publishing Group

Keywords

Bed Material, Bottom Slag, Bed Materials Feeding System, Ultra-fine Roller Screen, Energy Conservation and Environmental Protection

References
[1] ZHENG Hefei. Study on the 600 MW supercritical circulating fluidized bed boiler system [J], Energy and Energy Conservation, 2015 (12): 70-71.
[2] YUE Guangxi, LU Junfu, XU Peng, et al. The up-to-date development and future of circulating fluidized bed combustion technology [J]. Electric Power, 2016, 49 (1): 5-17.
[3] HUANG Zhong, YANG Juan, CHE Defu. Application and development of large-scale circulating fluidized bed boiler [J]. Thermal Power Generation, 2019 (6): 1-8.
[4] WANG Zhi-qiang. How to control of circulating fluidized bed boiler bed temperature [J]. Shanxi Architecture, 2013, 39 (7): 139-141.
[5] Zhao Chenyang. Importance of bed material size for circulating fluidized bed boilers [C]. Papers on Technical Exchange Service Collaboration Network of CFB Units in National Electric Power Industry, 2006, (4).
[6] SI Junlong, JI Hui. The influence of bed material size on CFB boiler operation. China Electric Power Science and Technology Network. 2009, (2).
[7] Yanjin, Lu Xiaofeng, Wang Quanhai et al. [J] Furnace test on combustion uniformity in dilute phase zone of 600 MW supercritical CFB boiler [J]. Journal of Electrical Engineering of China. 2018, 2 (1): 64-72.
[8] ZHONG Weihong, LIU Zhaoxiang, WANG Lehua. Optimization of feeding mode for CFB boiler [J]. Electric safety technology, 2012 (8): 21-22.
[9] LIU Jinbo, LIU Yu, DU Zhengyu. The approach to the start- up material systemof CFB boiler [J]. Central China Electric Power, 2006, 19 (1): 55-58.
[10] WEN Bangchun, LIU Shuying. Modern vibration screening technology and equipment design [M]. Beijing: Metallurgical Industry Press, 2013.
[11] DL/T 1374-2014 ROLLER SCREEN [S].
[12] LIU Xitao. Design of Bamana -shape rolling shaft sieve and determination of main parameters [J]. Electric Power Construction, 2000, 21 (6): 31-34.
[13] ZHAO Huanshuai. Progress and research direction of dry deep screening technology of fine grained coal [J]. Clean Coal Technology, 2019 (5): 28-34
[14] DING Yanfeng, LI Xinsheng, JIANG Li, et al. Experimental research on the turbulence dual-tube pneumatic cinder delivery technology [J]. Electric Power, 41 (10): 53-56.
[15] ZHANG Zhanxin, Study on material and processing technology of alumina ceramic substrate [D]. Hebei: Hebei University of Technology, 2006.
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  • APA Style

    Huang Shuzhen, Li Xinsheng. (2020). Research and Application on Bed Material Preparation System of CFB Boiler. International Journal of Energy and Power Engineering, 9(6), 108-114. https://doi.org/10.11648/j.ijepe.20200906.13

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    ACS Style

    Huang Shuzhen; Li Xinsheng. Research and Application on Bed Material Preparation System of CFB Boiler. Int. J. Energy Power Eng. 2020, 9(6), 108-114. doi: 10.11648/j.ijepe.20200906.13

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    AMA Style

    Huang Shuzhen, Li Xinsheng. Research and Application on Bed Material Preparation System of CFB Boiler. Int J Energy Power Eng. 2020;9(6):108-114. doi: 10.11648/j.ijepe.20200906.13

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  • @article{10.11648/j.ijepe.20200906.13,
      author = {Huang Shuzhen and Li Xinsheng},
      title = {Research and Application on Bed Material Preparation System of CFB Boiler},
      journal = {International Journal of Energy and Power Engineering},
      volume = {9},
      number = {6},
      pages = {108-114},
      doi = {10.11648/j.ijepe.20200906.13},
      url = {https://doi.org/10.11648/j.ijepe.20200906.13},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijepe.20200906.13},
      abstract = {This paper introduces a technology of preparing bed material with bottom slag of circulating fluidized bed boiler, and designs the system of filling the bed material into the furnace, which has been applied in engineering. This technology uses bottom slag to prepare bed material. Through screening treatment of developed ultra-fine roller screen, the bed material with particle size meeting combustion requirements is prepared and fed into fluidized bed furnace. It not only ensures the combustion effect of the boiler, but also saves a lot of bed material procurement and operation costs, at the same time, it reduces the discharge of boiler bottom slag, which is conducive to reducing pollutant emission. Moreover, some limestone which is not involved in the desulfurization reaction in the furnace is screened out and returned to the furnace again as bed material, so as to improve the utilization rate of limestone powder. The success of this system in engineering application provides a low-cost and reliable new bed material preparation and filling method for the industry, and provides a reliable guarantee for the combustion of CFB boilers. The system meets the requirements of energy conservation and environmental protection, enriches the auxiliary system of CFB boiler, improves the supporting level of auxiliary system of CFB boiler, and further promotes the application of clean combustion fluidized bed unit.},
     year = {2020}
    }
    

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  • TY  - JOUR
    T1  - Research and Application on Bed Material Preparation System of CFB Boiler
    AU  - Huang Shuzhen
    AU  - Li Xinsheng
    Y1  - 2020/12/31
    PY  - 2020
    N1  - https://doi.org/10.11648/j.ijepe.20200906.13
    DO  - 10.11648/j.ijepe.20200906.13
    T2  - International Journal of Energy and Power Engineering
    JF  - International Journal of Energy and Power Engineering
    JO  - International Journal of Energy and Power Engineering
    SP  - 108
    EP  - 114
    PB  - Science Publishing Group
    SN  - 2326-960X
    UR  - https://doi.org/10.11648/j.ijepe.20200906.13
    AB  - This paper introduces a technology of preparing bed material with bottom slag of circulating fluidized bed boiler, and designs the system of filling the bed material into the furnace, which has been applied in engineering. This technology uses bottom slag to prepare bed material. Through screening treatment of developed ultra-fine roller screen, the bed material with particle size meeting combustion requirements is prepared and fed into fluidized bed furnace. It not only ensures the combustion effect of the boiler, but also saves a lot of bed material procurement and operation costs, at the same time, it reduces the discharge of boiler bottom slag, which is conducive to reducing pollutant emission. Moreover, some limestone which is not involved in the desulfurization reaction in the furnace is screened out and returned to the furnace again as bed material, so as to improve the utilization rate of limestone powder. The success of this system in engineering application provides a low-cost and reliable new bed material preparation and filling method for the industry, and provides a reliable guarantee for the combustion of CFB boilers. The system meets the requirements of energy conservation and environmental protection, enriches the auxiliary system of CFB boiler, improves the supporting level of auxiliary system of CFB boiler, and further promotes the application of clean combustion fluidized bed unit.
    VL  - 9
    IS  - 6
    ER  - 

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Author Information
  • Beijing Guodian Futong Science and Technology Development Co., Ltd., Beijing, China; Beijing Engineering Research Center of Pneumatic Conveying, Beijing, China

  • Beijing Guodian Futong Science and Technology Development Co., Ltd., Beijing, China;Beijing Engineering Research Center of Pneumatic Conveying, Beijing, China

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