Numerical Simulation of Bed Combustion in Biomass-Briquette Boiler
Publication: Journal of Energy Engineering
Volume 146, Issue 4
Abstract
In this study, a biomass briquette boiler from the Yunnan Dianhong pharmaceutical industry is considered as the research object. Using the computational hydrodynamics software FLUENT, a three-dimensional dynamic model of the boiler bed combustion is established. Based on simulation results and the accuracy of the data verification model of a field test, the effect of the air preheating temperature, bed thickness, and particle diameter on the combustion of the boiler bed is simulated by using the model. The results demonstrate that within reasonable ranges, at an air preheating temperature of 250°C, fuel bed thickness of 0.1 m, and grain diameter of 0.02 m, the sooner the bed surface gas reaches its highest temperature, the sooner the combustion is completed, and the highest temperature on the fuel bed changes more significantly with the depth. This study offers a reference model for the bed combustion of biomass briquettes and serves as a basis for the overall systematic design and optimized modeling of biomass briquette boilers.
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Data Availability Statement
The data used to support the findings of this study have been deposited in the figshare repository. DOI:https://doi.org/10.6084/m9.figshare.8427134, https://doi.org/10.6084/m9.figshare.9858785.
Acknowledgments
The authors gratefully acknowledge the Yunnan Youth Fund Project (No. 2017FD080). The head of the fund is Rong Chen.
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Published In
Journal of Energy Engineering
Volume 146 • Issue 4 • August 2020
Copyright
©2020 American Society of Civil Engineers.
History
Received: Apr 14, 2019
Accepted: Oct 22, 2019
Published online: May 30, 2020
Published in print: Aug 1, 2020
Discussion open until: Oct 30, 2020
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