Abstract
The paper presents the impacts of the jet momentum, position and orientation of air and Recycled Flue Gas (RFG) streams on the performance of a grate-fired boiler burning waste wood via a comprehensive CFD-based parametric study. It is found that the air and RFG jets can be optimized to enhance mixing and improve combustion in the boiler. For instance, the optimized air and RFG jets can extend the residence time of the gas and entrained fine particles in the hot zones effectively, make the temperature and velocity profiles more uniform, and enhance heat transfer. The findings of this study can serve as useful guidelines for innovative design and optimization of the secondary air and RFG for this type of grate boilers.
| Original language | English |
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| Title of host publication | Proceedings of 12th Conference on Sustainable Development of Energy, Water and Environment Systems |
| Number of pages | 14 |
| Publisher | SDEWES Centre |
| Publication date | Oct 2017 |
| Publication status | Published - Oct 2017 |
| Event | 12th Conference on Sustainable Development of Energy, Water and Environment Systems - Dubrovnik, Croatia Duration: 4 Oct 2017 → 8 Oct 2017 http://www.dubrovnik2017.sdewes.org/ |
Conference
| Conference | 12th Conference on Sustainable Development of Energy, Water and Environment Systems |
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| Country/Territory | Croatia |
| City | Dubrovnik |
| Period | 04/10/2017 → 08/10/2017 |
| Internet address |
Keywords
- Waste-fired grate boiler
- Computational Fluid Dynamics (CFD)
- Air/flue gas staging
- Boiler performance
- Flow uniformity
- Mixing process