Efika, CE, Onwudili, JA and Williams, PT orcid.org/0000-0003-0401-9326 (2018) Influence of heating rates on the products of high-temperature pyrolysis of waste wood pellets and biomass model compounds. Waste Management, 76. pp. 497-506. ISSN 0956-053X
Abstract
The effect of heating rates ranging from 5 °C min‾¹ to 350 °C min‾¹ on the yields of pyrolysis products of wood and its main pseudo-components (cellulose, hemicellulose and lignin) have been investigated at a temperature of 800 °C in a horizontal fixed bed reactor. Results showed a successive dramatic increase and decrease in gas and liquid yields, respectively, while the yields of solid products showed a gradual decrease as heating rates increased. Increased gas formation and an increasingly aromatic oil/tar support the theory of rapid devolatilization of degradation products with increasing heating rate, leading to extensive cracking of primary pyrolysis vapours. Solid products with coal-like calorific value and large surface areas were obtained. CO became the dominant gas both on a mass and volume basis, at the heating rate of 350 °C min‾¹ for all samples except xylan, which also produced a significant yield of CO₂ (20.3 wt% and 25.4 vol%) compared to the other samples. Cellulose produced a gas product with highest calorific value of 35 MJ kg‾¹ at the highest heating rate. Results also indicate that the three main pseudo-components of biomass each exert a different influence on the products of high temperature pyrolysis of woody biomass.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2018, Elsevier Ltd. This is an author produced version of a paper published in Waste Management. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | High-temperature pyrolysis; Heating rate; Woody biomass; High-CV gas products |
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: | 17 May 2018 10:17 |
Last Modified: | 17 Mar 2019 01:39 |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/j.wasman.2018.03.021 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:130962 |