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Modeling and Simulation of Down Draft Wood Gasifier

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The conversion of biomass by gasification into a fuel suitable for use in a gas engine increases great ly the potent ial usefulne ss of biomass as a renewable resource. Gasi ficat ion is a robust proven technology that can be operated either as a simple, low technology system based on a fixed-bed gasi fier, or as a more sophis tica ted system using fluid ized-bed technology. Hence there is huge expectation from the user industry for its application. For a country like India with its vast agricu ltural residues, there is a large requirement for an efficient power generation system. The critical operating parameters that affect the gasi fier performance are wood diameter , air temperature, moistur e content throat angle and throat diameter of fixed gasifier geometry. In the present study, mathematical model was developed to characterize the gasification performance of a typic al biomass downdr aft gas ifier and the validated model is used to simulate the parametric study.

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