The search of new materials acting as sustainable energy vectors to substitute traditional fossil fuels is object of intensive research nowadays. Agricultural residues offer a widespread availability and suitable potential energy contents. Feasibility studies on the performance of these fuels and the evaluation of their suitability for gasification purposes were performed in this work. The gasification of different agricultural residues (rice straw, residues from kaki fruit) was simulated following a pseudo-equilibrium approach with the aid of a simulation software. Different models were developed to take into account the main experimental parameters found in a gasifier pilot unit: carbon conversion and influence of the temperature on the equilibrium constants of the reactions. The effect of the Temperature of reaction (T) and Equivalence Ratio (ER) on the distribution of products in the produced gas and on the performance of the process by the assessment of the High Heating Value (HHV), the Cold Gas Efficiency (CGE) and the Carbon Conversion Efficiency (CCE) was evaluated. Finally, based on the developed models, the operating conditions of the experimental pilot unit were optimised.
Simulation activities for the pseudo-equilibrium modelling of the gasification of agricultural residues
Moliner C.;Bove D.;Bosio B.;Arato E.
2016-01-01
Abstract
The search of new materials acting as sustainable energy vectors to substitute traditional fossil fuels is object of intensive research nowadays. Agricultural residues offer a widespread availability and suitable potential energy contents. Feasibility studies on the performance of these fuels and the evaluation of their suitability for gasification purposes were performed in this work. The gasification of different agricultural residues (rice straw, residues from kaki fruit) was simulated following a pseudo-equilibrium approach with the aid of a simulation software. Different models were developed to take into account the main experimental parameters found in a gasifier pilot unit: carbon conversion and influence of the temperature on the equilibrium constants of the reactions. The effect of the Temperature of reaction (T) and Equivalence Ratio (ER) on the distribution of products in the produced gas and on the performance of the process by the assessment of the High Heating Value (HHV), the Cold Gas Efficiency (CGE) and the Carbon Conversion Efficiency (CCE) was evaluated. Finally, based on the developed models, the operating conditions of the experimental pilot unit were optimised.
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