Biomass torrefaction: Modeling of reaction thermochemistry
Based on the evolution of volatile and solid products predicted by a previous model for willow torrefaction (Bates and Ghoniem, 2012) a thermochemical model has been developed to describe their thermal, chemical, and physical properties as well as the rates of heat release. The first stage of torref...
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| Format: | Article |
| Language: | en_US |
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Elsevier
2016
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| Online Access: | http://hdl.handle.net/1721.1/105394 https://orcid.org/0000-0002-8773-4132 https://orcid.org/0000-0001-8730-272X |
| _version_ | 1826211192627003392 |
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| author | Bates, Richard B Ghoniem, Ahmed F |
| author2 | Massachusetts Institute of Technology. Department of Mechanical Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Mechanical Engineering Bates, Richard B Ghoniem, Ahmed F |
| author_sort | Bates, Richard B |
| collection | MIT |
| description | Based on the evolution of volatile and solid products predicted by a previous model for willow torrefaction (Bates and Ghoniem, 2012) a thermochemical model has been developed to describe their thermal, chemical, and physical properties as well as the rates of heat release. The first stage of torrefaction, associated with hemicellulose decomposition, is exothermic releasing between 40 and 280 kJ/kginitial. The second stage is associated with the decomposition of the remaining lignocellulosic components, completes over a longer period, and is predicted to be either endothermic or exothermic depending on the temperature and assumed solid properties. Cumulative heat release increases with the degree of torrefaction quantified by the mass loss. The rate of mass loss and rate of heat release increase with higher temperatures. The higher heating value of volatiles produced during torrefaction was estimated to be between 4.4 and 16 MJ/kg increasing with the level of mass loss. |
| first_indexed | 2024-09-23T15:02:02Z |
| format | Article |
| id | mit-1721.1/105394 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T15:02:02Z |
| publishDate | 2016 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | mit-1721.1/1053942022-09-29T12:13:16Z Biomass torrefaction: Modeling of reaction thermochemistry Bates, Richard B Ghoniem, Ahmed F Massachusetts Institute of Technology. Department of Mechanical Engineering Bates, Richard B Ghoniem, Ahmed F Based on the evolution of volatile and solid products predicted by a previous model for willow torrefaction (Bates and Ghoniem, 2012) a thermochemical model has been developed to describe their thermal, chemical, and physical properties as well as the rates of heat release. The first stage of torrefaction, associated with hemicellulose decomposition, is exothermic releasing between 40 and 280 kJ/kginitial. The second stage is associated with the decomposition of the remaining lignocellulosic components, completes over a longer period, and is predicted to be either endothermic or exothermic depending on the temperature and assumed solid properties. Cumulative heat release increases with the degree of torrefaction quantified by the mass loss. The rate of mass loss and rate of heat release increase with higher temperatures. The higher heating value of volatiles produced during torrefaction was estimated to be between 4.4 and 16 MJ/kg increasing with the level of mass loss. BP (Firm) 2016-11-21T22:01:05Z 2016-11-21T22:01:05Z 2013-01 2013-02 Article http://purl.org/eprint/type/JournalArticle 09608524 http://hdl.handle.net/1721.1/105394 Bates, Richard B., and Ahmed F. Ghoniem. "Biomass torrefaction: Modeling of reaction thermochemistry." Bioresource Technology 134 (April 2013), pp. 331-340. https://orcid.org/0000-0002-8773-4132 https://orcid.org/0000-0001-8730-272X en_US http://dx.doi.org/10.1016/j.biortech.2013.01.158 Bioresource Technology Creative Commons Attribution-NonCommercial-NoDerivs License http://creativecommons.org/licenses/by-nc-nd/4.0/ application/pdf Elsevier Prof. Ghoniem via Angie Locknar |
| spellingShingle | Bates, Richard B Ghoniem, Ahmed F Biomass torrefaction: Modeling of reaction thermochemistry |
| title | Biomass torrefaction: Modeling of reaction thermochemistry |
| title_full | Biomass torrefaction: Modeling of reaction thermochemistry |
| title_fullStr | Biomass torrefaction: Modeling of reaction thermochemistry |
| title_full_unstemmed | Biomass torrefaction: Modeling of reaction thermochemistry |
| title_short | Biomass torrefaction: Modeling of reaction thermochemistry |
| title_sort | biomass torrefaction modeling of reaction thermochemistry |
| url | http://hdl.handle.net/1721.1/105394 https://orcid.org/0000-0002-8773-4132 https://orcid.org/0000-0001-8730-272X |
| work_keys_str_mv | AT batesrichardb biomasstorrefactionmodelingofreactionthermochemistry AT ghoniemahmedf biomasstorrefactionmodelingofreactionthermochemistry |