Simulation of biomass char gasification in a downdraft reactor for syngas production - Archive ouverte HAL
Article Dans Une Revue AIChE Journal Année : 2016

Simulation of biomass char gasification in a downdraft reactor for syngas production

Résumé

A steady state, one-dimensional computational fluid dynamics model of wood char gasification in a downdraft reactor is presented. The model is not only based on reaction kinetics and fluid flow in the porous char bed but also on equations of heat and mass conservation. An original OpenFOAM solver is used to simulate the model and the results are found to be in good agreement with published experimental data. Next, a sensitivity analysis is performed to study the influence of reactor inlet temperature and gas composition on char conversion, bed temperature profile and syngas composition. In addition, the evolution of the complex reaction mechanisms involved in mixed atmosphere gasification is investigated, and the most suitable operating parameters for controlling syngas composition are evaluated. Our simulation results provide essential knowledge for optimizing the design and operation of downdraft gasifiers to produce syngas that meets the requirements of various biofuel applications
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Dates et versions

hal-01599995 , version 1 (20-10-2018)

Identifiants

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Augustina Ephraim, Victor Pozzobon, Olivier Louisnard, Doan Pham Minh, Ange Nzihou, et al.. Simulation of biomass char gasification in a downdraft reactor for syngas production. AIChE Journal, 2016, 62 (4), p. 1079-1091. ⟨10.1002/aic.15111⟩. ⟨hal-01599995⟩
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