Modelling of an indirectly heated fixed bed pyrolysis reactor of wood: Transition from batch to continuous staged gasification

Lamarche, Pierre; Tazerout, Mohand; Gelix, Franck; Köhler, Stefanie; Mati, Karim; Paviet, Frédéric

doi:10.1016/j.fuel.2012.12.005

Cited by 24 publications

(23 citation statements)

References 17 publications

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“…A review of reactor scale CFD models has been recently published by Xiong et al () for a detailed discussion on this topic. For packed beds, the most basic simulations consider transport through porous media models in which the whole bed is homogenized (e.g., Lamarche et al, ). Some authors have explicitly modeled intraparticle gradients, and demonstrated improved simulation accuracy (A. H. Mahmoudi, Hoffmann, & Peters, , ; Ratte, Fardet, Mateos, & Héry, ).…”

Section: Fast Pyrolysis Of Biomassmentioning

confidence: 99%

Advancing catalytic fast pyrolysis through integrated multiscale modeling and experimentation: Challenges, progress, and perspectives

Ciesielski

Pecha

Bharadwaj

et al. 2018

WIREs Energy & Environment

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Catalytic fast pyrolysis (CFP) is a conversion process that integrates rapid thermochemical depolymerization of solid feedstocks with catalytic transformation to yield small molecules for fuel and chemical products. This process is well-suited for the conversion of nonfossil feedstocks such as biomass and waste plastics, and thereby holds great potential for the production of renewable commodities. In spite of many technological developments in various aspects of CFP achieved over decades of research, this technology has yet to attain commercial success for the production of fuels and chemicals from renewable feedstocks. Effective CFP processes require careful coordination of chemical and physical phenomena that span very large length and time scales. A broad spectrum of scientific progress in both pyrolysis and catalytic upgrading has provided the foundation for successful deployment of CFP, although additional progress in process-scale integration is yet required for commercial realization. Modeling and simulation tools provide an important framework wherein the CFP technologies by be better understood and evaluated from a holistic perspective. Here we provide a detailed description of the multiscale phenomena underlying CFP, describe challenges and associated technical progress, and suggest strategies for an integrated approach to advance this technology toward commercialization.

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Section: Fast Pyrolysis Of Biomassmentioning

confidence: 99%

Advancing catalytic fast pyrolysis through integrated multiscale modeling and experimentation: Challenges, progress, and perspectives

Ciesielski

Pecha

Bharadwaj

et al. 2018

WIREs Energy & Environment

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“…As with several other fixed bed models, Darcy's law is used to describe the average flow of gas through the porous char bed as

U_{normalg} = - \frac{K}{μ} \nabla P

where K is the bed permeability and μ is the gas viscosity.…”

Section: Modeling Approachmentioning

confidence: 99%

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

et al. 2015

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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.In all graphs, the experimental data provided by Teixeira et al. 24 are represented by triangles, and the predicted values from OPENFOAM and COMSOL 24 simulations are represented by solid and dashed lines, respectively. [Color figure can be viewed in the online issue, which is available at wileyonlinelibrary.com.]

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“…Obtendo valores em MJ/kg, e atuando em uma temperatura que varia de 0 a 12 °C acima da temperatura ambiente, e com pressão de 30000 kPa. O tamanho da amostra é mais significativo quando considera-se a umidade relativa da madeira, pois quanto menor for o fragmento de biomassa utilizada, menos umidade deve estar disposta para incorporação no material (LAMARCHE, et al, 2013).…”

Section: Analise Do Poder Caloríficounclassified

Potencial Dendroenergético Da Espécie Peltophorum Dubium (Spreng.) Taub. (Canafístula) Para Produção De Biocombustíveis Sólidos

Eckert

Frigo

Santos

et al. 2015

R. bras. Ener. Renov.

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Este trabalho teve como objetivo avaliar a qualidade da madeira de espécie Peltophorum dubium (Spreng.) Taub. (Canafístula) para geração de combustíveis sólidos, como alternativa de suprimento a setores industriais, nos formatos de pelete, briquete e fluff (maravalha). Determinou-se as características da madeira como a umidade, compostos voláteis e cinzas. A madeira obteve baixa quantidade de umidade e cinzas, assim como alto poder calorífico, contabilizando-a como uma boa alternativa florestal para suprimento energético.

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Modelling of an indirectly heated fixed bed pyrolysis reactor of wood: Transition from batch to continuous staged gasification

Cited by 24 publications

References 17 publications

Advancing catalytic fast pyrolysis through integrated multiscale modeling and experimentation: Challenges, progress, and perspectives

Advancing catalytic fast pyrolysis through integrated multiscale modeling and experimentation: Challenges, progress, and perspectives

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

Potencial Dendroenergético Da Espécie Peltophorum Dubium (Spreng.) Taub. (Canafístula) Para Produção De Biocombustíveis Sólidos

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