10.1007/s40095-021-00423-y

Hydrogen production from co-gasification of Çan lignite and sorghum biomass in a fixed-bed gasifier: CFD modeling

  • Afshin Amani1,
  • Faranak Akhlaghian*1,
  1. Department of Chemical Engineering, Faculty of Engineering, University of Kurdistan, Sanandaj, IR

Published in Issue 2021-08-29

How to Cite

Amani, A., & Akhlaghian, F. (2021). Hydrogen production from co-gasification of Çan lignite and sorghum biomass in a fixed-bed gasifier: CFD modeling. International Journal of Energy and Environmental Engineering, 13(1 (March 2022). https://doi.org/10.1007/s40095-021-00423-y
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Abstract

Abstract Temperature, steam flow rate and coal/biomass ratio in the feedstock are the key factors that affect the performances of co-gasification processes. A three-dimensional computational fluid dynamics (CFD) method matched with homogenous chemical reactions was used to visualize hydrogen concentration gradient in a fixed-bed reactor. The Eulerian–Eulerian CFD method was promoted to investigate the effects of various ranges of temperature (700–950 °C), water flow rate (0.5 × 10 –8 to 3.3 × 10 –8 m 3 /s) and coal/biomass ratio (0–100%) on the gasification efficiency. All numerical operations were under time-dependent conditions by depicting concentration contours for H 2 production. Using the CFD technique, the desirable circumstances for maximum H 2 production were specified as temperature of 850 °C, water flow rate of 1.9 × 10 −3 m 3 /s and coal/biomass ratio of around 50%. A comparison between the simulation results and experimental gasification data was conducted to approve the CFD results, and there was an acceptable agreement among them.

Keywords

  • Hydrogen production,
  • CFD simulation,
  • Biomass co-gasification,
  • Fixed-bed gasifier

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