Modeling and simulation of photocatalytic CO2 reduction into methanol in a bubble slurry photoreactor

•Bubble slurry photoreactor is modeled and simulated.•Hydrodynamic, kinetic and radiation models have been used.•A new design for bubble slurry photoreactor including spargers is proposed.•Parametric study and detailed evaluation of model results and system behavior was performed.•A reliable model v...

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Veröffentlicht in:Chemical engineering science 2022-12, Vol.263, p.118078, Article 118078
Hauptverfasser: Asadi, Amirhossein, Larimi, Afsanehsadat, Jiang, Zhi, Naderifar, Abbas
Format: Artikel
Sprache:eng
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Zusammenfassung:•Bubble slurry photoreactor is modeled and simulated.•Hydrodynamic, kinetic and radiation models have been used.•A new design for bubble slurry photoreactor including spargers is proposed.•Parametric study and detailed evaluation of model results and system behavior was performed.•A reliable model validated with minimal error was proposed. One of the attractive but still challenging ways of CO2 utilization is photocatalytic conversion of CO2 into fuels. Since reactor design plays an important role in both the efficiency and quality of the product, moving towards modeling and simulation of the photoreactor is vital. Thus, in this work modeling and simulation of photoreactor has been conducted using appropriate hydrodynamic and kinetic modules. The obtained model has been thoroughly validated by the experimental data which can further be utilized to scale-up the photoreduction process. The important parameters in the reactor design including the number of spargers, inlet gas flux, average bubble diameter, and light intensity have been studied. The methanol concentration after 150 s of the reaction under irradiation with light intensity of 120 W/m2 where 12 spargers delivered carbon dioxide gas into the reactor has been reported and the results have been validated accordingly.
ISSN:0009-2509
1873-4405
DOI:10.1016/j.ces.2022.118078