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Heating Strategies in Cellulose Pyrolysis as an Alternative For Targeting Energy Efficient Product Distribution

Chico-Proano, A; Manos, G; Papageorgiou, LG; Fraga, ES; (2021) Heating Strategies in Cellulose Pyrolysis as an Alternative For Targeting Energy Efficient Product Distribution. Chemical Engineering Transactions , 86 pp. 61-66. 10.3303/CET2186011. Green open access

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Abstract

Energy generation and platform chemicals production from biomass are a potential route towards an oil-free economy. Pyrolysis is one of the key technologies for transforming biomass into both fuels and chemicals. However, pyrolysis is a complex and energy-intensive process, and optimizing the operation for reducing its energy requirements is critical for the design of competitive biorefineries. This work presents a model to describe cellulose pyrolysis based on mass, energy and momentum conservation of solid and gaseous species. Lumped and detailed kinetic models are used to investigate how heating conditions impact pyrolysis product distribution. The resulting complex system was solved using gPROMS. Results suggest that pyrolysis mainly occurs in the boundary of the modelled particles. The developed model presents flexibility to use lumped and detailed kinetic models and provided both a general perspective of the pyrolysis process and detailed information on product distribution. Using this model, the results show that an initial high heating rate, followed by a lower heating rate, could reduce energy requirements by 10 % without changing the product distribution. There is also a trade-off between the yield of high added-value products, such as levoglucosan, and the overall energy requirement.

Type: Article
Title: Heating Strategies in Cellulose Pyrolysis as an Alternative For Targeting Energy Efficient Product Distribution
Open access status: An open access version is available from UCL Discovery
DOI: 10.3303/CET2186011
Publisher version: https://doi.org/10.3303/CET2186011
Language: English
Additional information: This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions.
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Chemical Engineering
URI: https://discovery.ucl.ac.uk/id/eprint/10131669
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