Waheed, QMK, Wu, C and Williams, PT (2016) Pyrolysis/reforming of rice husks with a Ni–dolomite catalyst: Influence of process conditions on syngas and hydrogen yield. Journal of the Energy Institute, 89 (4). pp. 657-667. ISSN 1743-9671
Abstract
The influence of process conditions on the production of syngas and H2 from biomass in the form of rice husks was investigated using a two-stage pyrolysis/catalytic reforming reactor. The parameters investigated were, reforming temperature, steam flow rate and biomass particle size and the catalyst used was a 10 wt.% Ni–dolomite catalyst. Biomass was pyrolysed in the first stage, and the product volatiles were reformed in the second stage in the presence of steam and the Ni–dolomite catalyst. Increase in catalyst temperature from 850 °C to 1050 °C marginally improved total syngas yield. However, H2 yield was increased from 20.03 mmol g−1 at 850 °C to 30.62 mmol g−1 at 1050 °C and H2 concentration in the product gas increased from 53.95 vol.% to 65.18 vol.%. Raising the steam flow rate increased the H2 yield and H2 gas concentration. A significant increase in H2:CO ratio along with a decrease in CO:CO2 ratio suggested a change in the equilibrium of the water gas shift reaction towards H2 formation with increased steam flow rate. The influence of particle size on H2 yield was small showing an increase in H2 production when the particle size was reduced from 2.8–3.3 to 0.2–0.5 mm.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | (c) 2015, Taylor & Francis. This is an Accepted Manuscript of an article published by Taylor & Francis in Journal of the Energy Institute on May 2015, available online: http://dx.doi.org/10.1016/j.joei.2015.05.006 |
Keywords: | Pyrolysis;; Reforming; Biomass; Rice husk; Hydrogen |
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) |
Depositing User: | Symplectic Publications |
Date Deposited: | 05 Jan 2017 13:38 |
Last Modified: | 25 Jan 2018 09:14 |
Published Version: | http://dx.doi.org/10.1016/j.joei.2015.05.006 |
Status: | Published |
Publisher: | Taylor & Francis |
Identification Number: | 10.1016/j.joei.2015.05.006 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:110005 |