Lea-Langton, A, Zin, RM, Dupont, V et al. (1 more author) (2012) Biomass pyrolysis oils for hydrogen production using chemical looping reforming. International Journal of Hydrogen Energy, 37 (2). 2037 - 2043. ISSN 0360-3199
Abstract
This study considers the feasibility of using highly oxygenated and volatile pyrolysis oils from biomass wastes as sustainable liquid fuels for conversion to a hydrogen-rich syngas using the chemical looping reforming process in a packed bed. Pine oil and palm empty fruit bunches oil- 'EFB'- were investigated with a Ni/Al 2O 3 catalyst doubling as oxygen transfer material (OTM). The effect of molar steam to carbon ratio (S/C) and weight hourly space velocity were investigated at 600 °C and atmospheric pressure on the fuel and steam conversion, the H 2 yield and the H- and C-products distribution. With a downward fuel feed configuration and using a H 2-reduced catalyst, maximum averaged fuel conversions of ∼97% for pine oil and 89% for EFB oil were achieved at S/C ratios of 2.3 and 2.6 respectively (on a water-free oil basis). This produced H 2 with a yield efficiency of approximately 60% for pine oil and 80% for EFB oil notwithstanding equilibrium limitations, and with little CH 4 by-product. Both oils exhibited very similar outputs with varying S/C. Upon a short number of cycles, i.e. starting from an oil-reduced catalyst, the fuel conversion dropped slightly but the steam conversion was constant, resulting in a slow decrease in H 2 yield. Despite their high level of oxygen content, the pyrolysis oils were shown to maintain close to 90% reduction of the oxidised catalyst upon repeated cycles, but the rate of reduction decreased with cycling.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | (c) 2012, Elsevier. This is an author produced version of a paper published in the International Journal of Hydrogen Energy. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Bio oils; Chemical looping; Hydrogen; Nickel; Reduction; Reforming |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Chemical & Process Engineering (Leeds) > Energy Research Institute (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 10 Jul 2013 11:29 |
Last Modified: | 23 Jun 2023 21:33 |
Published Version: | http://dx.doi.org/10.1016/j.ijhydene.2011.05.083 |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/j.ijhydene.2011.05.083 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:75955 |