Modeling the slag layer in solid fuel gasification and combustion -- Formulation and sensitivity analysis
Name
Yong.et.al._Modeling the Slag Layer in Solid Fuel Gasification and Combustion ─ Formulation and Sensitivity Analysis_2012.pdf
Size
2.11 MB
Format
Adobe PDF
Checksum (MD5)
fa291eda62c121cc6ef091e9d164907b
Author(s)
Gazzino, Marco
Yong, Sze Zheng
Ghoniem, Ahmed F
Date Issued
July 2011
Journal
Fuel
Publisher
Elsevier
Citation
Yong, Sze Zheng, Marco Gazzino, and Ahmed Ghoniem. "Modeling the slag layer in solid fuel gasification and combustion – Formulation and sensitivity analysis." Fuel 92:1 (February 2012), pp. 162-170.
Version
Author's final manuscript
Abstract
A steady-state model has been developed to describe the flow and heat transfer characteristics of the slag layer in solid fuel gasification and combustion. The model incorporates a number of sub-models including one for particle capture, and takes into consideration the temperature and composition dependent properties of slag, the contribution of momentum of captured particles and the possibility of slag resolidification. An equally important issue is the interaction of the particles colliding with the slag layer. High inertia particles tend to rebound whereas slower particles are trapped in the slag layer. Since only trapped particles are relevant to the slag layer build-up, a particle capture criterion for colliding particles is introduced. The model predicts the local thickness of the molten and the solid slag layers, the average slag velocity, the temperature distribution across the layer and the heat flux to the coolant, taking into account the influence of molten and resolidified slag layers coating the combustor or reactor wall.
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
Terms of Use
Creative Commons Attribution-NonCommercial-NoDerivs License
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1016/j.fuel.2011.06.062
