A numerical model for the fractional condensation of pyrolysis vapours

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dc.contributor.authorPalla, V. S. Kiran Kumar Palla
dc.contributor.authorPapadikis, Konstantinos
dc.contributor.authorGu, Sai
dc.date.accessioned2016-05-25T10:03:31Z
dc.date.available2016-05-25T10:03:31Z
dc.date.issued2015-01-20
dc.description.abstractExperimentation on the fast pyrolysis process has been primarily focused on the pyrolysis reactor itself, with less emphasis given to the liquid collection system (LCS). More importantly, the physics behind the vapour condensation process in LCSs has not been thoroughly researched mainly due to the complexity of the phenomena involved. The present work focusses on providing detailed information of the condensation process within the LCS, which consists of a water cooled indirect contact condenser. In an effort to understand the mass transfer phenomena within the LCS, a numerical simulation was performed using the Eulerian approach. A multiphase multi-component model, with the condensable vapours and non-condensable gases as the gaseous phase and the condensed bio-oil as the liquid phase, has been created. Species transport modelling has been used to capture the detailed physical phenomena of 11 major compounds present in the pyrolysis vapours. The development of the condensation model relies on the saturation pressures of the individual compounds based on the corresponding states correlations and assuming that the pyrolysis vapours form an ideal mixture. After the numerical analysis, results showed that different species condense at different times and at different rates. In this simulation, acidic components like acetic acid and formic acids were not condensed as it was also evident in experimental works, were the pH value of the condensed oil is higher than subsequent stages. In the future, the current computational model can provide significant aid in the design and optimization of different types of LCSs.en_UK
dc.identifier.citationV. S. Kiran Kumar Palla, K. Papadikis, S. Gu, A numerical model for the fractional condensation of pyrolysis vapours, Biomass and Bioenergy, Volume 74, March 2015, Pages 180-192en_UK
dc.identifier.issn0961-9534
dc.identifier.urihttp://dx.doi.org/10.1016/j.biombioe.2015.01.020
dc.identifier.urihttp://dspace.lib.cranfield.ac.uk/handle/1826/9913
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution-Non-Commercial-No Derivatives 3.0 Unported (CC BY-NC-ND 3.0). You are free to: Share — copy and redistribute the material in any medium or format. The licensor cannot revoke these freedoms as long as you follow the license terms. Under the following terms: Attribution — You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. Information: Non-Commercial — You may not use the material for commercial purposes. No Derivatives — If you remix, transform, or build upon the material, you may not distribute the modified material. No additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.en_UK
dc.subjectCondensationen_UK
dc.subjectLiquid collection systemen_UK
dc.subjectSpecies transporten_UK
dc.subjectFast pyrolysisen_UK
dc.subjectPhase changeen_UK
dc.titleA numerical model for the fractional condensation of pyrolysis vapoursen_UK
dc.typeArticleen_UK

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