Numerical Simulation of the Release of Alkali Metal during the Combustion of Biomass-fired Boiler

DOI

10.2991/mebe-15.2015.168How to use a DOI?

Keywords

alkali metal; release; numerical simulation; biomass-fired boiler.

Abstract

In this paper, a CFD-based release model is presented to study the release process of alkali metal and predict the deposition in the furnace. In the release model, potassium chloride (KCl) is chosen as a representative alkali. The results showed that: the concentration of KCl, mainly releases in devolatilization and carbon combustion zone of the boiler grate, and the largest concentration appears in the carbon combustion zone. Meanwhile, the concentration of KCl is relatively high in superheater area. According to the simulation results, it is predicted that the right side of the three superheater regions prone to deposition and severe deposition appears on the lower turning-place of the superheater. The simulation results are in good agreement with the measured results in Heishan power plant.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Fang Wang
AU  - XianBin Xiao
AU  - TengGe Mi
AU  - ChangQing Dong
PY  - 2015/04
DA  - 2015/04
TI  - Numerical Simulation of the Release of Alkali Metal during the Combustion of Biomass-fired Boiler
BT  - Proceedings of the 2015 International Conference on Materials, Environmental and Biological Engineering
PB  - Atlantis Press
SP  - 748
EP  - 751
SN  - 2352-5401
UR  - https://doi.org/10.2991/mebe-15.2015.168
DO  - 10.2991/mebe-15.2015.168
ID  - Wang2015/04
ER  -