Optimization of Biomass Gasification in a Dual Fluidized Bed Reactor: A Modeling Approach Using Aspen Plus
Keywords:
Biomass Gasification, Dual Fluidized Bed, Aspen Plus, Renewable Energy, HydrogenAbstract
The growing demand for sustainable energy has positioned biomass gasification as a promising thermochemical conversion technology, particularly in Dual Fluidized Bed (DFB) reactors, which are known for producing high-quality syngas with low tar and nitrogen content. This study presents the development and validation of a biomass gasification model using Aspen Plus, integrating thermodynamic and kinetic parameters to simulate the conversion of three biomass types: BBJP (solid refuse-derived fuel), sawdust, and wood chips. The model’s accuracy was validated against experimental data for both Single Fluidized Bed (SFB) and DFB configurations, demonstrating strong accuracy, with R² values exceeding 90% for key gas components. The simulation results indicated that the DFB configuration significantly enhanced hydrogen (H₂) production, with the highest yield achieved using BBJP (59.84 mol%) at approximately 750°C, followed by sawdust (56.7 mol%) and wood chips (56.08 mol%). Additionally, the study found that a steam-to-biomass ratio of 0.7 optimizes H₂ production, beyond which performance decreases due to syngas dilution. Energy analysis revealed the DFB system produced higher Lower Heating Values (LHV) than the SFB system, with sawdust yielding 23.07 MJ/kg, indicating strong potential for practical application. The model provides valuable insights into optimizing biomass gasification processes, advancing renewable energy technologies, and supporting sustainable power generation initiatives, particularly in Indonesia.
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