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Performance Analysis of Silica Fluidized Bed Membrane Reactor for Hydrogen Production as a Green Process Using CFD

Maryam Barmaki1, Elham Jalilnejad1, Kamran Ghasemzadeh1,2

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Summary

The fluidized bed membrane reactor (FBMR) significantly outperforms other reactor types for hydrogen production via methanol steam reforming, achieving higher methanol conversion and hydrogen yield for clean energy.

Keywords:
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Area of Science:

  • Chemical Engineering
  • Energy Conversion
  • Catalysis

Background:

  • Methanol steam reforming is a key process for producing hydrogen, a clean fuel.
  • Membrane reactors enhance hydrogen production efficiency by in-situ product removal.
  • Fluidized bed reactors offer advantages in heat and mass transfer compared to packed beds.

Purpose of the Study:

  • To evaluate the performance of a fluidized bed membrane reactor (FBMR) for hydrogen production.
  • To compare FBMR performance against packed bed membrane reactors (PBMR), fluidized bed reactors (FBR), and packed bed reactors (PBR).
  • To investigate the impact of operating parameters on reactor efficiency.

Main Methods:

  • Development of a 2D axisymmetric computational fluid dynamics (CFD) numerical model.
  • Validation of the model using experimental data for PBMR and PBR.
  • Simulation of methanol steam reforming under various operating conditions.

Main Results:

  • The packed bed membrane reactor (PBMR) achieved 67.6% methanol conversion and 69.5% hydrogen yield under optimal conditions.
  • The fluidized bed membrane reactor (FBMR) demonstrated superior performance, reaching 98.3% methanol conversion and 95.8% hydrogen yield.
  • FBMR showed higher hydrogen recovery (74.5%) and selectivity (97.4%) compared to PBMR.

Conclusions:

  • The fluidized bed membrane reactor (FBMR) is a highly efficient system for hydrogen production via methanol steam reforming.
  • FBMR offers significantly better performance than other studied reactor types.
  • FBMR presents a promising pathway for clean energy generation.