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- Conflict of Interest
- In relation to this article, we declare that there is no conflict of interest.
- Publication history
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Received March 28, 2023
Revised May 15, 2023
Accepted May 22, 2023
- Acknowledgements
- This research was supported by the Research Project for “Carbon Upcycling Project for Platform Chemicals” of the National Research Foundation (NRF) funded by the Ministry of Science and ICT (Grant number: 2022M3J3A104602111).
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CFD modeling of a multichannel Fischer-Tropsch reactor module with microscale cooling channels: Effects of mirrored structure cooling layers
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Abstract
Computational fluid dynamics (CFD) modeling of a multichannel Fischer-Tropsch reactor with microscale
cooling channels is addressed in this study, wherein detailed mass, momentum, and energy balances were solved to
retrieve detailed distributions of the conversion and temperature of both catalytic and cooling layers. A comparison
between experimental data and simulation results showed relative errors of 6.73% and 1.22% for conversion and C5+
selectivity, respectively, which proves the validity of the proposed model. The novel structure of the reactor composed
of mirrored structure cooling layers is suggested to prevent the thermal instability of a large-scale reactor module. The
simulation showed that the symmetric distribution of the dense cooling channel area in the early part of the reactor
decreased peak temperatures (Tmax=28.6 o
C), whereas the nonmirrored case resulted in hot spots caused by the limited heat transfer capacity (Tmax=39.2 o
C). The effects of the feed/coolant temperature, space velocity, and pressure
were evaluated, and high temperatures and pressures resulted in a steep temperature increase in the early part of the
reactor, whereas the high space velocity showed an increase in the area of peak temperature. Further, the analysis
showed trade-offs of operating conditions between the conversion and selectivity of desired products.
Keywords
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