Avoiding false runaway prediction by properly describing axial conductive heat transfer in a low dt/dp industrial-scale packed bed reactor

Romero-Limones, Alejandro; Poissonnier, Jeroen; Castillo-Araiza, Carlos O.; Thybaut, Joris W.

doi:10.1016/j.cej.2023.146167

Cited by 2 publications

(1 citation statement)

References 59 publications

(117 reference statements)

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“…It is important to mention that the analysis of transport phenomena in beds with a low tube-to-particle diameter ratio arouses interest due to its potential capacity to significantly enhance energy transfer in highly exothermic reactions ,,,,− such as the Fischer–Tropsch (FT) reaction. The low tube-to-particle diameter ratio enables a greater contact area between the reactants and the catalyst, which can intensify the heat transfer rate and, consequently, improve the conversion and selectivity of hydrocarbons.…”

Section: Reactors In Ft Processmentioning

confidence: 99%

An Overview of Low-Temperature Fischer–Tropsch Synthesis: Market Conditions, Raw Materials, Reactors, Scale-Up, Process Intensification, Mechanisms, and Outlook

Apolinar-Hernández,

Bertoli,

Riella

et al. 2023

Energy Fuels

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The Fischer−Tropsch technology has allowed, since its emergence a century ago, the production of stable liquid fuels from different raw materials in different geographic scenarios that do not necessarily have oil reserves. Some of these raw materials can generate high-quality fuels with a lower content of sulfur, aromatic, and heterocyclic compounds. The scaling and intensification of the reactors are essential factors in this context, and important challenges such as energy transfer due to the highly exothermic reaction, hydrodynamics due to limited information on pilot-scale in a reasonable range of conditions, or reducing CH 4 selectivity while maintaining high conversion through catalyst design, must be considered. This perspective provides an overview of recent developments in industrial-scale low-temperature Fischer−Tropsch reactors, with a focus on the significance of microchannel reactors in the scale-up process. The advancement in the Fischer−Tropsch synthesis is discussed, with an emphasis on the carbide and CO insertion mechanisms, as well as the socio-political-economic factors that continue to impact the development of this technology.

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Section: Reactors In Ft Processmentioning

confidence: 99%

An Overview of Low-Temperature Fischer–Tropsch Synthesis: Market Conditions, Raw Materials, Reactors, Scale-Up, Process Intensification, Mechanisms, and Outlook

Apolinar-Hernández,

Bertoli,

Riella

et al. 2023

Energy Fuels

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Evaluating the Performance of Yarrowia lipolytica 2.2ab in Solid-State Fermentation under Bench-Scale Conditions in a Packed-Tray Bioreactor

Barrios-Nolasco,

Castillo-Araiza,

Huerta-Ochoa

et al. 2024

Fermentation

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Solid-State Fermentation (SSF) offers a valuable process for converting agri-food by-products (AFBP) into high-value metabolites, with Yarrowia lipolytica 2.2ab (Yl2.2ab) showing significant potential under laboratory-scale controlled conditions; however, its assessment in larger-scale bioreactor scenarios is needed. This work evaluates Yl2.2ab’s performance in a bench-scale custom-designed packed-tray bioreactor. Key features of this bioreactor design include a short packing length, a wall-cooling system, and forced aeration, enhancing hydrodynamics and heat and mass transfer within the tray. Preliminary studies under both abiotic and biotic conditions assessed Yl2.2ab’s adaptability to extreme temperature variations. The results indicated effective oxygen transport but poor heat transfer within the tray bed, with Yl2.2ab leading to a maximum growth rate of 28.15 mgx gssdb−1 h−1 and maximum production of proteases of 40.10 U gssdb−1 h−1, even when temperatures at the packed-tray outlet were around 49 °C. Hybrid-based modeling, incorporating Computational Fluid Dynamics (CFD) and Pseudo-Continuous Simulations (PCSs), elucidated that the forced-aeration system successfully maintained necessary oxygen levels in the bed. However, the low thermal conductivity of AFBP posed challenges for heat transfer. The bioreactor design presents promising avenues for scaling up SSF to valorize AFBP using Yl2.2ab’s extremophilic capabilities.

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Avoiding false runaway prediction by properly describing axial conductive heat transfer in a low dt/dp industrial-scale packed bed reactor

Cited by 2 publications

References 59 publications

An Overview of Low-Temperature Fischer–Tropsch Synthesis: Market Conditions, Raw Materials, Reactors, Scale-Up, Process Intensification, Mechanisms, and Outlook

An Overview of Low-Temperature Fischer–Tropsch Synthesis: Market Conditions, Raw Materials, Reactors, Scale-Up, Process Intensification, Mechanisms, and Outlook

Evaluating the Performance of Yarrowia lipolytica 2.2ab in Solid-State Fermentation under Bench-Scale Conditions in a Packed-Tray Bioreactor

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