Journal
BIOMASS & BIOENERGY
Volume 142, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.biombioe.2020.105810
Keywords
Computational fluid dynamics (CFD); Modelling; Charcoal; Batch reactor; Pyrolysis; Biomass
Funding
- EFRE program by NO Wirtschaft-und Tourismusfonds [WST3-F2-540381/003-2016]
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In order to facilitate the development and optimization of a batch reactor for charcoal production, a new CFD model was developed that allows a detailed description of the pyrolysis process of the biomass within the batch reactor. Focusing on computational efficiency, the model is not based on single biomass particles, but on a description of the (local) properties of the packed bed inside the reactor. The drying and pyrolysis processes are described on a local scale, such that according to the prevailing conditions (temperatures, flow) the progress of the reactions can be analysed. To validate the CFD model, dedicated test runs were performed using a pilot-scale pyrolysis reactor, and the measurement results were compared to the simulation. The results show that the progress of conversion is well represented, and a reasonable agreement of temperature profiles inside the retort is achieved. The overall trends for the profile of mass release are also reproduced.
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