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- Title
Three‐dimensional numerical modelling of a fast fluidized bed biomass gasifier to generate energy from wastes.
- Authors
Ozgoli, Hassan Ali; Deilami, Sara; Ghodrat, Maryam; Safari, Sadegh; Mirabi, Mohammad Hossein; Olusegun, Tomomewo Stanley
- Abstract
The modelling of a biomass fluidized bed gasification system, one of the most effective ways to produce energy from biomass resources and wastes, has been performed in this study. The effect of the turbulence phenomena, including calculations relating to flow turbulence, chemical fuel reactions, and energy and momentum exchange between multiple solid and gas phases, has been taken into account in the current research as a novel approach. A computational fluid dynamics case study model that combines equations with comprehensive geometry has been considered. Results have been compared with published operational records of an existing power plant to validate the model. The solid particle distribution, the velocity of the mixture and gas phase, the turbulent flow viscosity ratio, and the temperature distribution in the model indicated the accuracy of the simulation performance compared with the experimental studies. The production of the molar fraction of the constituent elements of the synthesis gas has been evaluated in transient conditions. Additionally, 35 s after the process began, the system's performance was estimated, and the results indicated the average molecular weights of hydrogen, carbon monoxide, carbon dioxide, and methane are 26%, 23%, 12.5%, and 3.3%, respectively, which presented high precision with the experimental results.
- Subjects
FLUIDIZED bed gasifiers; COMPUTATIONAL fluid dynamics; THREE-dimensional modeling; BIOMASS energy; TEMPERATURE distribution; BIOMASS gasification; SYNTHESIS gas
- Publication
Canadian Journal of Chemical Engineering, 2023, Vol 101, Issue 10, p5542
- ISSN
0008-4034
- Publication type
Article
- DOI
10.1002/cjce.24848