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    Emission of particulate matter during the combustion of bio-oil and its fractions under air and oxyfuel conditions

    Access Status
    Fulltext not available
    Authors
    Feng, Chao
    Gao, Xiangpeng
    Wu, Hongwei
    Date
    2017
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Feng, C. and Gao, X. and Wu, H. 2017. Emission of particulate matter during the combustion of bio-oil and its fractions under air and oxyfuel conditions. Proceedings of the Combustion Institute.. 36: pp. 4061-4068.
    Source Title
    Proceedings of the Combustion Institute.
    DOI
    10.1016/j.proci.2016.08.053
    Additional URLs
    http://www.sciencedirect.com/science/article/pii/S1540748916304424
    ISSN
    1540-7489
    School
    Department of Chemical Engineering
    Funding and Sponsorship
    http://purl.org/au-research/grants/arc/DP150104486
    URI
    http://hdl.handle.net/20.500.11937/58601
    Collection
    • Curtin Research Publications
    Abstract

    © 2016.The study reports the emission of inorganic particulate matter (PM) with aerodynamic diameters <10µm (PM10) during the complete combustion of bio-oil in a drop-tube-furnace (DTF) system at 1400°C under air and two oxyfuel conditions (i.e., 21%O2/79%CO2 and 30%O2/70%CO2, by volume). Three bio-oil samples were studied, i.e., a raw bio-oil, a filtrated bio-oil (prepared from the raw bio-oil after fine char particles were removed via filtration), and the water-insoluble fraction of the filtrated bio-oil (blended with ethanol). The total inorganic species of the raw bio-oil are distributed dominantly (74.7%) in the water-soluble fraction but minorly in the water-insoluble fraction (10.4%) and suspended fine char particles (14.9%). The results from the combustion experiments show that the PSDs of PM10 from the complete combustion of the raw and filtrated bio-oils have a bimodal distribution, with a fine mode at ~0.03µm and a coarse mode at ~2.0µm. The water-insoluble fraction and the fine char particles suspended in the raw bio-oil have insignificant contributions to PM10 emission during the combustion of the raw bio-oil. It is the water-soluble fraction that plays a key role in the emission of PM10 during the combustion of the raw bio-oil. The data also show that PM10 emission during the complete combustion of bio-oil is insensitive to combustion atmosphere (air or oxyfuel) because complete bio-oil combustion is dominated by gaseous-phase reactions and the contribution of solid combustion is minimal. However, the excessive CO2 under oxyfuel conditions leads to more Fe being partitioned into PM0.1-1.

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