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Study on Powder Coke Combustion and Pollution Emission Characteristics of Fluidized Bed Boilers

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  • Chen Yang

    (Key Laboratory of Low-Grade Energy Utilization Technologies and Systems, Chongqing University, Ministry of Education, Chongqing 400030, China
    School of Energy and Power Engineering, Chongqing University, Chongqing 400030, China)

  • Haochuang Wu

    (Key Laboratory of Low-Grade Energy Utilization Technologies and Systems, Chongqing University, Ministry of Education, Chongqing 400030, China
    School of Energy and Power Engineering, Chongqing University, Chongqing 400030, China)

  • Kangjie Deng

    (Key Laboratory of Low-Grade Energy Utilization Technologies and Systems, Chongqing University, Ministry of Education, Chongqing 400030, China
    School of Energy and Power Engineering, Chongqing University, Chongqing 400030, China)

  • Hangxing He

    (Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu 610213, China)

  • Li Sun

    (Key Laboratory of Low-Grade Energy Utilization Technologies and Systems, Chongqing University, Ministry of Education, Chongqing 400030, China
    School of Energy and Power Engineering, Chongqing University, Chongqing 400030, China)

Abstract

The fluidized reactor is widely used in a number of chemical processes due to its high gas-particle contacting efficiency and excellent performance on solid mixing. An improved numerical framework based on the multiphase particle-in-cell (MP-PIC) method has been developed to simulate the processes of gas–solid flow and chemical reactions in a fluidized bed. Experiments have been carried out with a 3-MW circulating fluidized bed with a height of 24.5 m and a cross section of 1 m 2 . In order to obtain the relationship between pollutant discharge and operating conditions and to better guide the operation of the power plant, a series of tests and simulations were carried out. The distributions of temperature and gas concentration along the furnace from simulations achieved good accuracy compared with experimental data, indicating that this numerical framework is suitable for solving complex gas–solid flow and reactions in fluidized bed reactors. Through a series of experiments, the factors affecting the concentration of NO x and SO x emissions during the steady-state combustion of the normal temperature of powder coke were obtained, which provided some future guidance for the operation of a power plant burning the same kind of fuel.

Suggested Citation

  • Chen Yang & Haochuang Wu & Kangjie Deng & Hangxing He & Li Sun, 2019. "Study on Powder Coke Combustion and Pollution Emission Characteristics of Fluidized Bed Boilers," Energies, MDPI, vol. 12(8), pages 1-18, April.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:8:p:1424-:d:222539
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    References listed on IDEAS

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    1. Leckner, Bo & Gómez-Barea, Alberto, 2014. "Oxy-fuel combustion in circulating fluidized bed boilers," Applied Energy, Elsevier, vol. 125(C), pages 308-318.
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    Cited by:

    1. 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.
    2. Jolanta Telenga-Kopyczyńska & Izabela Jonek-Kowalska, 2021. "Algorithm for Selecting Best Available Techniques in Polish Coking Plants Supporting Multi-Criteria Investment Decisions in European Environmental Conditions," Energies, MDPI, vol. 14(9), pages 1-24, May.
    3. Haochuang Wu & Chen Yang & Zonglong Zhang & Qiang Zhang, 2022. "Simulation of Two-Phase Flow and Syngas Generation in Biomass Gasifier Based on Two-Fluid Model," Energies, MDPI, vol. 15(13), pages 1-15, June.

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