Advanced air/flue gas staging based on CFD modelling for enhanced combustion and burnout in a waste-wood fired boiler

Boštjan Rajh, Chungen Yin, Niko Samec, Matjaž Hriberšek, Filip Kokalj, Matej Zadravec

Publikation: Bidrag til bog/antologi/rapport/konference proceedingKonferenceartikel i proceedingForskningpeer review

Resumé

The paper presents the impacts of the jet momentum, position and orientation of air and Recycled Flue Gas (RFG) streams on the performance of a grate-fired boiler burning waste wood via a comprehensive CFD-based parametric study. It is found that the air and RFG jets can be optimized to enhance mixing and improve combustion in the boiler. For instance, the optimized air and RFG jets can extend the residence time of the gas and entrained fine particles in the hot zones effectively, make the temperature and velocity profiles more uniform, and enhance heat transfer. The findings of this study can serve as useful guidelines for innovative design and optimization of the secondary air and RFG for this type of grate boilers.
OriginalsprogEngelsk
TitelProceedings of 12th Conference on Sustainable Development of Energy, Water and Environment Systems
Antal sider14
ForlagSDEWES Centre
Publikationsdatookt. 2017
StatusUdgivet - okt. 2017
Begivenhed12th Conference on Sustainable Development of Energy, Water and Environment Systems - Dubrovnik, Kroatien
Varighed: 4 okt. 20178 okt. 2017
http://www.dubrovnik2017.sdewes.org/

Konference

Konference12th Conference on Sustainable Development of Energy, Water and Environment Systems
LandKroatien
ByDubrovnik
Periode04/10/201708/10/2017
Internetadresse

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Wood wastes
Flue gases
Boilers
Computational fluid dynamics
Air
Momentum
Heat transfer
Gases
Temperature

Emneord

    Citer dette

    Rajh, B., Yin, C., Samec, N., Hriberšek, M., Kokalj, F., & Zadravec, M. (2017). Advanced air/flue gas staging based on CFD modelling for enhanced combustion and burnout in a waste-wood fired boiler. I Proceedings of 12th Conference on Sustainable Development of Energy, Water and Environment Systems SDEWES Centre.
    Rajh, Boštjan ; Yin, Chungen ; Samec, Niko ; Hriberšek, Matjaž ; Kokalj, Filip ; Zadravec, Matej. / Advanced air/flue gas staging based on CFD modelling for enhanced combustion and burnout in a waste-wood fired boiler. Proceedings of 12th Conference on Sustainable Development of Energy, Water and Environment Systems. SDEWES Centre, 2017.
    @inproceedings{da27735cf79c4d6b8d262bab31d681f4,
    title = "Advanced air/flue gas staging based on CFD modelling for enhanced combustion and burnout in a waste-wood fired boiler",
    abstract = "The paper presents the impacts of the jet momentum, position and orientation of air and Recycled Flue Gas (RFG) streams on the performance of a grate-fired boiler burning waste wood via a comprehensive CFD-based parametric study. It is found that the air and RFG jets can be optimized to enhance mixing and improve combustion in the boiler. For instance, the optimized air and RFG jets can extend the residence time of the gas and entrained fine particles in the hot zones effectively, make the temperature and velocity profiles more uniform, and enhance heat transfer. The findings of this study can serve as useful guidelines for innovative design and optimization of the secondary air and RFG for this type of grate boilers.",
    keywords = "Waste-fired grate boiler, Computational Fluid Dynamics (CFD), Air/flue gas staging, Boiler performance, Flow uniformity, Mixing process",
    author = "Boštjan Rajh and Chungen Yin and Niko Samec and Matjaž Hriberšek and Filip Kokalj and Matej Zadravec",
    year = "2017",
    month = "10",
    language = "English",
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    Rajh, B, Yin, C, Samec, N, Hriberšek, M, Kokalj, F & Zadravec, M 2017, Advanced air/flue gas staging based on CFD modelling for enhanced combustion and burnout in a waste-wood fired boiler. i Proceedings of 12th Conference on Sustainable Development of Energy, Water and Environment Systems. SDEWES Centre, Dubrovnik, Kroatien, 04/10/2017.

    Advanced air/flue gas staging based on CFD modelling for enhanced combustion and burnout in a waste-wood fired boiler. / Rajh, Boštjan; Yin, Chungen; Samec, Niko; Hriberšek, Matjaž; Kokalj, Filip; Zadravec, Matej.

    Proceedings of 12th Conference on Sustainable Development of Energy, Water and Environment Systems. SDEWES Centre, 2017.

    Publikation: Bidrag til bog/antologi/rapport/konference proceedingKonferenceartikel i proceedingForskningpeer review

    TY - GEN

    T1 - Advanced air/flue gas staging based on CFD modelling for enhanced combustion and burnout in a waste-wood fired boiler

    AU - Rajh, Boštjan

    AU - Yin, Chungen

    AU - Samec, Niko

    AU - Hriberšek, Matjaž

    AU - Kokalj, Filip

    AU - Zadravec, Matej

    PY - 2017/10

    Y1 - 2017/10

    N2 - The paper presents the impacts of the jet momentum, position and orientation of air and Recycled Flue Gas (RFG) streams on the performance of a grate-fired boiler burning waste wood via a comprehensive CFD-based parametric study. It is found that the air and RFG jets can be optimized to enhance mixing and improve combustion in the boiler. For instance, the optimized air and RFG jets can extend the residence time of the gas and entrained fine particles in the hot zones effectively, make the temperature and velocity profiles more uniform, and enhance heat transfer. The findings of this study can serve as useful guidelines for innovative design and optimization of the secondary air and RFG for this type of grate boilers.

    AB - The paper presents the impacts of the jet momentum, position and orientation of air and Recycled Flue Gas (RFG) streams on the performance of a grate-fired boiler burning waste wood via a comprehensive CFD-based parametric study. It is found that the air and RFG jets can be optimized to enhance mixing and improve combustion in the boiler. For instance, the optimized air and RFG jets can extend the residence time of the gas and entrained fine particles in the hot zones effectively, make the temperature and velocity profiles more uniform, and enhance heat transfer. The findings of this study can serve as useful guidelines for innovative design and optimization of the secondary air and RFG for this type of grate boilers.

    KW - Waste-fired grate boiler

    KW - Computational Fluid Dynamics (CFD)

    KW - Air/flue gas staging

    KW - Boiler performance

    KW - Flow uniformity

    KW - Mixing process

    M3 - Article in proceeding

    BT - Proceedings of 12th Conference on Sustainable Development of Energy, Water and Environment Systems

    PB - SDEWES Centre

    ER -

    Rajh B, Yin C, Samec N, Hriberšek M, Kokalj F, Zadravec M. Advanced air/flue gas staging based on CFD modelling for enhanced combustion and burnout in a waste-wood fired boiler. I Proceedings of 12th Conference on Sustainable Development of Energy, Water and Environment Systems. SDEWES Centre. 2017