Abstract
Quartz particles as a bed material have a significant influence on combustion and gasification of refuse derived fuel (RDF) inside a fluidized column by sensible mixing. The two-phase flow are believed to have an effect on mixing process of RDF and quartz particles, and the flow scheme was conducted therein for Geldart B particles using CFD method based on the kinetic theory of granular flows (KTGF) within 3D simulations. The drag models (SyamlalO’Brien, Gidaspow and Wen and Yu) were adopted to analyze the applicability of kinetic model for different gas inlet velocity ranges. The instantaneous velocity distribution and volume fraction of particles were investigated numerically when the gas inlet velocity was changed. It turns out that the increase of superficial gas velocity would result in a heterogeneous expansion of solid volume fraction and velocity distribution in both dense phase region and free board with the similar distribution pattern. The numerical research about particle concentration was carried out on the particle flow pattern of down-flow at the near wall with the solid volume fraction greater than 0.3. The wall condition also has an effect on the flow properties and lower specularity coefficient is applicable.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
