An experimental study of the ignition and combustion characteristics of single droplets of biochar-glycerol-water slurry fuels

Mingming Zhu, Zhezi Zhang, Yang Zhang, Hendrix Setyawan, Pengfei Liu, Dongke Zhang

    Research output: Contribution to journalArticle

    16 Citations (Scopus)

    Abstract

    The ignition and combustion characteristics of biochar-glycerol-water slurry fuels were studied. The effect of glycerol addition on the ignition and combustion behavior of biochar-water slurry fuels was emphasized. All the slurry fuels exhibited heterogeneous ignition of biochar residue (agglomerate) following water and glycerol evaporation. The addition of glycerol significantly reduced ignition delay time shortened burnout time and increased burning rate of the droplets. This effect was improved with increasing glycerol/water ratio in the slurry fuels. The glycerol was not completely evaporated before ignition and the remaining glycerol burned concurrently with the biochar on or near the agglomerate surface. The combustion of agglomerate after ignition was controlled by external oxygen diffusion to the outer layer of the agglomerate under the conditions tested. © 2016 The Combustion Institute. Published by Elsevier Inc.

    Original languageEnglish
    Pages (from-to)2475-2482
    Number of pages8
    JournalProceedings of the Combustion Institute
    Volume36
    Issue number2
    DOIs
    Publication statusPublished - 2017

    Fingerprint

    glycerols
    Glycerol
    ignition
    Ignition
    Water
    water
    burnout
    burning rate
    biochar
    Time delay
    Evaporation
    time lag
    evaporation
    Oxygen
    oxygen

    Cite this

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    title = "An experimental study of the ignition and combustion characteristics of single droplets of biochar-glycerol-water slurry fuels",
    abstract = "The ignition and combustion characteristics of biochar-glycerol-water slurry fuels were studied. The effect of glycerol addition on the ignition and combustion behavior of biochar-water slurry fuels was emphasized. All the slurry fuels exhibited heterogeneous ignition of biochar residue (agglomerate) following water and glycerol evaporation. The addition of glycerol significantly reduced ignition delay time shortened burnout time and increased burning rate of the droplets. This effect was improved with increasing glycerol/water ratio in the slurry fuels. The glycerol was not completely evaporated before ignition and the remaining glycerol burned concurrently with the biochar on or near the agglomerate surface. The combustion of agglomerate after ignition was controlled by external oxygen diffusion to the outer layer of the agglomerate under the conditions tested. {\circledC} 2016 The Combustion Institute. Published by Elsevier Inc.",
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    author = "Mingming Zhu and Zhezi Zhang and Yang Zhang and Hendrix Setyawan and Pengfei Liu and Dongke Zhang",
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    An experimental study of the ignition and combustion characteristics of single droplets of biochar-glycerol-water slurry fuels. / Zhu, Mingming; Zhang, Zhezi; Zhang, Yang; Setyawan, Hendrix; Liu, Pengfei; Zhang, Dongke.

    In: Proceedings of the Combustion Institute, Vol. 36, No. 2, 2017, p. 2475-2482.

    Research output: Contribution to journalArticle

    TY - JOUR

    T1 - An experimental study of the ignition and combustion characteristics of single droplets of biochar-glycerol-water slurry fuels

    AU - Zhu, Mingming

    AU - Zhang, Zhezi

    AU - Zhang, Yang

    AU - Setyawan, Hendrix

    AU - Liu, Pengfei

    AU - Zhang, Dongke

    PY - 2017

    Y1 - 2017

    N2 - The ignition and combustion characteristics of biochar-glycerol-water slurry fuels were studied. The effect of glycerol addition on the ignition and combustion behavior of biochar-water slurry fuels was emphasized. All the slurry fuels exhibited heterogeneous ignition of biochar residue (agglomerate) following water and glycerol evaporation. The addition of glycerol significantly reduced ignition delay time shortened burnout time and increased burning rate of the droplets. This effect was improved with increasing glycerol/water ratio in the slurry fuels. The glycerol was not completely evaporated before ignition and the remaining glycerol burned concurrently with the biochar on or near the agglomerate surface. The combustion of agglomerate after ignition was controlled by external oxygen diffusion to the outer layer of the agglomerate under the conditions tested. © 2016 The Combustion Institute. Published by Elsevier Inc.

    AB - The ignition and combustion characteristics of biochar-glycerol-water slurry fuels were studied. The effect of glycerol addition on the ignition and combustion behavior of biochar-water slurry fuels was emphasized. All the slurry fuels exhibited heterogeneous ignition of biochar residue (agglomerate) following water and glycerol evaporation. The addition of glycerol significantly reduced ignition delay time shortened burnout time and increased burning rate of the droplets. This effect was improved with increasing glycerol/water ratio in the slurry fuels. The glycerol was not completely evaporated before ignition and the remaining glycerol burned concurrently with the biochar on or near the agglomerate surface. The combustion of agglomerate after ignition was controlled by external oxygen diffusion to the outer layer of the agglomerate under the conditions tested. © 2016 The Combustion Institute. Published by Elsevier Inc.

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    KW - Combustion

    KW - Glycerol

    KW - Ignition

    KW - Slurry fuels

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