title: Numerical study of co-firing pulverized coal and biomass inside a cement calciner.
abstract: The use of waste wood biomass as fuel is increasingly gaining significance in the cement industry. The combustion of biomass and particularly co-firing of biomass and coal in existing pulverized-fuel burners still faces significant challenges. One possibility for the ex ante control and investigation of the co-firing process are computational fluid dynamics (CFD) simulations. The purpose of this paper is to present a numerical analysis of co-firing pulverized coal and biomass in a cement calciner. Numerical models of pulverized coal and biomass combustion were developed and implemented into a commercial CFD code FIRE, which was then used for the analysis. Three-dimensional geometry of a real industrial cement calciner was used for the analysis. Three different co-firing cases were analysed. The results obtained from this study can be used for assessing different co-firing cases, and for improving the understanding of the co-firing process inside the calculated calciner.
authors: Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb, Zagreb, Croatia hrvoje.mikulcic@fsb.hr.
authors: Hrvoje
authors: H
authors: Mikulčić
authors: AVL-AST, Hans List Platz 1, Graz, Austria.
authors: Eberhard
authors: E
authors: von Berg
authors: Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb, Zagreb, Croatia.
authors: Milan
authors: M
authors: Vujanović
authors: Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb, Zagreb, Croatia.
authors: Neven
authors: N
authors: Duić
mesh_terms: D018533:Biomass; D003031:Coal / Q000032:analysis*; D003198:Computer Simulation; D057446:Hydrodynamics; D017745:Incineration; D012037:Refuse Disposal; D018505:Waste Management / Q000379:methods*; D014934:Wood / Q000737:chemistry*
chemical_list: D003031:Coal
keywords: CFD; Cement calciner; biomass; calcination process; co-firing; coal