Modeling Chemical Looping Gasification with Agroforestry Residues: Validation against Results in a 20 kW_th CLG Unit

Area of Science:

• Chemical Engineering
• Renewable Energy Technologies
• Process Simulation

Background:

• Biomass chemical looping gasification (BCLG) is an emerging technology for producing synthesis gas.
• BCLG offers advantages like low tar content and potential for carbon capture.
• Efficient modeling is crucial for optimizing BCLG systems.

Purpose of the Study:

• To develop and validate a simplified 1.5D macroscopic model for the BCLG fuel reactor.
• To simulate BCLG performance under various operating conditions.
• To provide a computationally efficient tool for BCLG process analysis.

Main Methods:

• Development of a 1.5D macroscopic model for the BCLG fuel reactor.
• Validation of the model using experimental data from a 20 kWth BCLG unit.
• Simulation of biomass (pine residue, wheat straw) gasification.

Main Results:

• The model successfully predicted syngas yield and composition.
• The model accurately captured the effects of temperature, solid circulation, and gas flow.
• Model validation confirmed its capability to simulate BCLG performance.

Conclusions:

• The developed 1.5D model is a valuable and efficient tool for simulating BCLG systems.
• The model aids in understanding and optimizing operating conditions for enhanced syngas production.
• This work facilitates the advancement of BCLG technology for sustainable energy generation.