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Optimize Flue Gas Settings to Promote Microalgae Growth in Photobioreactors via Computer Simulations

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Published on: October 1, 2013

Modeling biomass gasification using thermodynamic equilibrium approach.

Hua-Jiang Huang¹, Shri Ramaswamy

¹Department of Bioproducts and Biosystems Engineering, University of Minnesota, Kaufert Laboratory, 2004 Folwell Ave., St. Paul, MN 55108, USA.

Applied Biochemistry and Biotechnology

|January 28, 2009

Summary

Developed thermodynamic equilibrium models simulate biomass gasification performance. Modified models accurately predict syngas composition for various gasifier types, aiding process optimization.

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Area of Science:

Chemical Engineering
Thermodynamics
Renewable Energy

Background:

Biomass gasification is a key thermochemical conversion process for renewable energy.
Accurate modeling is crucial for optimizing gasifier design and operation.
Existing models may not fully capture the complexities of char interaction and local conditions.

Purpose of the Study:

To develop and validate thermodynamic equilibrium models for biomass gasification.
To investigate the influence of char on gasification equilibrium.
To create a adaptable model for simulating diverse gasifier types and syngas production.

Main Methods:

Development of thermodynamic equilibrium models, with and without char consideration.
Modification of models based on experimental data for methane (CH4) and carbon monoxide (CO) compositions.
Incorporation of local heat and mass transfer considerations.

Main Results:

Validated models accurately predict syngas equilibrium composition.
Modified models closely match experimental CH4 and CO concentrations.
The model effectively simulates downdraft gasifier performance.

Conclusions:

Thermodynamic equilibrium models, enhanced with local heat/mass transfer, can simulate biomass gasifiers.
The model provides a simple yet effective tool for estimating syngas equilibrium composition.
Adaptable models can be developed for various gasifier types by adjusting for specific characteristics.