One Dimensional Steady State Modeling And Simulation Of Fluidized Bed Biomass Gasification With Carbon Dioxidesorption

Biomass is considered as a potential source of energy production.Gasification can be employed to convert dilute biomass energy source in to gaseous products holding concentrated form of energy. A steady state model for fluidized bed biomass gasifier is developed based on reaction kinetics and hydrodynamic aspects of fluidization. The presence of sorbent for absorption of carbon dioxide from the product gas is also incorporated in the model.The developed model predicts the variation of syngas composition, temperature, pressure and velocity along the height of gasifier. Experiments were carried out in a lab scale fluidized bed biomass gasifier and the results were used to validate the model.An increase of 50.35% in H2 mole fraction and a decrease of 50.88 % in CO2 mole fraction were observed when CaO was used as the sorbent.