Abstract:
In this work, mathematical model of fuel reactor in chemical looping was developed by CFD using ANSYS FLUENT. The cold flow model was simulated for understanding its hydrodynamic behavior. It was found that the results was consistent with the experimental data. The results showed that gas velocity, particle density, particle diameter, initial bed height and the interaction between particle diameter and initial bed height; between particle diameter and particle density; between particle diameter and gas velocity and between initial bed height and gas velocity had affected on standard deviation of solid volume fraction in axial direction. For the radial direction, the results showed that particle diameter, particle density, initial bed height and the interaction between particle diameter and particle density and between initial bed height and gas velocity had affected on standard deviation of solid volume fraction in radial direction. For hot flow model when the chemical reaction took place, shrinking core model was used to express the conversion of nickel oxide with fuel gas. The operating parameter that had affected on syngas conversion was gas velocity. The parameters that affected on optimum condition for obtaining maximum syngas conversion were nickel oxide particle diameter 150 micron, ratio of initial bed height to diameter column 0.75, syngas temperature 873 K and 1.5 times of minimum fluidization velocity.