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    Importance of hydrogen and bio-oil inlet temperature during the hydrotreatment of bio-oil

    Access Status
    Fulltext not available
    Authors
    Gholizadeh, M.
    Gunawan, Richard
    Hu, Xue
    Kadarwati, S.
    Westerhof, R.
    Chaiwat, W.
    Hasan, M.
    Li, Chun-Zhu
    Date
    2016
    Type
    Journal Article
    
    Metadata
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    Citation
    Gholizadeh, M. and Gunawan, R. and Hu, X. and Kadarwati, S. and Westerhof, R. and Chaiwat, W. and Hasan, M. et al. 2016. Importance of hydrogen and bio-oil inlet temperature during the hydrotreatment of bio-oil. Fuel Processing Technology. 150: pp. 132-140.
    Source Title
    Fuel Processing Technology
    DOI
    10.1016/j.fuproc.2016.05.014
    ISSN
    0378-3820
    School
    Fuels and Energy Technology Institute
    URI
    http://hdl.handle.net/20.500.11937/32132
    Collection
    • Curtin Research Publications
    Abstract

    © 2016 Elsevier B.V. This paper reports the effects of hydrogen and bio-oil inlet temperature on the coke formation and product distribution during the hydrotreatment of bio-oil. A bench scale continuous hydrotreatment fixed-bed reactor set-up was used with pre-sulphided NiMo/y-Al2O3 as the catalyst. The temperature of hot fluidised sand bath in which the hydrotreatment reactor was immersed was set at 390°C while the pressure at the reactor exit was kept at around 70bar. An LHSV of 1h- 1 (on the basis of organics in the bio-oil feed) was used. Our results show that the presence of hot hydrogen in the injection point of bio-oil to the reactor reduced the coke formation and reactor blockage for prolonged catalyst activity. This was due to the enhanced cracking and minimised polymerisation of bio-oil fragments when hot hydrogen was used to heat and activate the catalyst at the injection point. Moreover, lighter products with less coking propensity and smaller aromatic ring systems were formed when the injection point was maintained at a higher temperature with the use of hot hydrogen. These results indicate that the coke formation during hydrotreatment is at least partly because of the slow heating up of the bio-oil and the resulting bond breakage not being matched by the supply of active hydrogen from the catalyst.

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