scholarly journals Computational Fluid Dynamics Study of Channel Geometric Effect for Fischer-Tropsch Microchannel Reactor

2014 ◽  
Vol 52 (6) ◽  
pp. 826-833 ◽  
Author(s):  
Jonggeol Na ◽  
Ikhwan Jung ◽  
Krishnadash S. Kshetrimayum ◽  
Seongho Park ◽  
Chansaem Park ◽  
...  
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Microchannel Reactor ◽  
Fischer Tropsch ◽  
Geometric Effect

Computational fluid dynamics study of heat transfer in a microchannel reactor for low-temperature Fischer–Tropsch synthesis

2010 ◽  
Vol 160 (3) ◽  
pp. 915-922 ◽  
Author(s):  
G. Arzamendi ◽  
P.M. Diéguez ◽  
M. Montes ◽  
J.A. Odriozola ◽  
E. Falabella Sousa-Aguiar ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Low Temperature ◽  
Tropsch Synthesis ◽  
Microchannel Reactor ◽  
Fischer Tropsch ◽  
Fischer Tropsch Synthesis

scholarly journals Thermal Assessment of a Micro Fibrous Fischer Tropsch Fixed Bed Reactor Using Computational Fluid Dynamics

Processes ◽  
2020 ◽  
Vol 8 (10) ◽  
pp. 1213
Author(s):  
Aya E. Abusrafa ◽  
Mohamed S. Challiwala ◽  
Benjamin A. Wilhite ◽  
Nimir O. Elbashir
Keyword(s):  
Fluid Dynamics ◽  
Thermal Conductivity ◽  
Computational Fluid Dynamics ◽  
Scale Up ◽  
High Thermal Conductivity ◽  
Packed Bed Reactor ◽  
Fixed Bed Reactor ◽  
Internal Diameter ◽  
Fischer Tropsch ◽  
Co Conversion

A two-dimensional (2D) Computational Fluid Dynamics (CFD) scale-up model of the Fischer Tropsch reactor was developed to thermally compare the Microfibrous-Entrapped-Cobalt-Catalyst (MFECC) and the conventional Packed Bed Reactor (PBR). The model implements an advanced predictive detailed kinetic model to study the effect of a thermal runaway on C5+ hydrocarbon product selectivity. Results demonstrate the superior capability of the MFECC bed in mitigating hotspot formation due to its ultra-high thermal conductivity. Furthermore, a process intensification study for radial scale-up of the reactor bed from 15 mm internal diameter (ID) to 102 mm ID demonstrated that large tube diameters in PBR lead to temperature runaway >200 K corresponding to >90% CO conversion at 100% methane selectivity, which is highly undesirable. While the MFECC bed hotspot temperature corresponded to <10 K at >30% CO conversion, attributing to significantly high thermal conductivity of the MFECC bed. Moreover, a noticeable improvement in C5+ hydrocarbon selectivity >70% was observed in the MFECC bed in contrast to a significantly low number for the PBR (<5%).

Kinetics and computational fluid dynamics study for Fischer–Tropsch synthesis in microchannel and fixed-bed reactors

2018 ◽  
Vol 3 (3) ◽  
pp. 319-332 ◽  
Author(s):  
Aditya Rai ◽  
Mohit Anand ◽  
Saleem A. Farooqui ◽  
Malayil G. Sibi ◽  
Anil K. Sinha
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Concentration Profile ◽  
Fixed Bed ◽  
Tropsch Synthesis ◽  
Fischer Tropsch ◽  
Fischer Tropsch Synthesis ◽  
Fixed Bed Reactors ◽  
Co Concentration

CO concentration profile during Fischer–Tropsch synthesis in microchannel and fixed bed reactors.

scholarly journals Analysis on Thermal Effects of Process Channel Geometry for Microchannel Fischer-Tropsch Reactor Using Computational Fluid Dynamics

2015 ◽  
Vol 53 (6) ◽  
pp. 818-823 ◽  
Author(s):  
Yongkyu Lee ◽  
Ikhwan Jung ◽  
Jonggeol Na ◽  
Seongho Park ◽  
Krishnadash S. Kshetrimayum ◽  
...  
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Thermal Effects ◽  
Fischer Tropsch ◽  
Channel Geometry ◽  
Process Channel

Methanol Steam Reforming in a Spiral-Shaped Microchannel Reactor over Cu/ZnO/Al2O3 Catalyst: A Computational Fluid Dynamics Simulation Study

2017 ◽  
Vol 15 (4) ◽  
Author(s):  
Meisam heidarzadeh ◽  
Majid Taghizadeh
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Carbon Monoxide ◽  
Steam Reforming ◽  
Cfd Simulation ◽  
Dynamics Simulation ◽  
Methanol Steam Reforming ◽  
Microchannel Reactor ◽  
Flow Rates ◽  
Shift Reaction

Abstract Hydrogen production in microchannel reactor by reforming reaction is applied for fuel cells in order to effectively avoid the problem of hydrogen storage. In this study, the Computational Fluid Dynamics (CFD) simulation of methanol steam reforming process was studied for the purpose of producing hydrogen in an annular microchannel coated with Cu/ZnO/Al2O3 catalyst. The modeling mechanism included methanol reforming reaction, methanol decomposition, and water-gas shift reaction. Furthermore, the effects of temperature variations were investigated and the conducted surveys were compared with the experimental results. The simulation results were in good agreement with the experimental data in that the temperature increases at various feed flow rates would lead to enhanced amounts of carbon monoxide and dioxide, while at a constant temperature, the amounts of hydrogen and carbon monoxide and dioxide reduce with increasing feed flow rates.

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