Numerical Simulation of Gas-solid Flow and Pulverized Coal Combustion in a Swirl Chamber Precalciner
- DOI
- 10.2991/icadme-16.2016.47How to use a DOI?
- Keywords
- Precalciner; swirl chamber; coal combustion; decomposition; numerical simulation
- Abstract
Efficient mixing of pulverized coal and calcium carbonate particles inside precalciner is important due to the reason that the mix process directly affects the final coal burn-out ratio and calcium carbonate decomposition ratio. The focus of this paper is on the gas-solid flow and pulverized coal combustion in an in-line swirl chamber precalciner. In terms of commercial computational fluid dynamics (CFD) code, the gas-solid flow characteristics, the temperature distribution and components distribution were obtained by numerical simulation of a 5000t/d swirl chamber precalciner. The results of simulation showed the characteristics of gas-solid flow that the gas rised spirally after being injected into the precalciner, the velocity in the center was lower, and the particles moved with gas-flow. The combustion of pulverized coal was mainly right in the upper of the swirl chamber and above the swirl chamber. The decomposition of calcium carbonate was also in the swirl chamber and the middle and lower part of the precalciner. The predicted coal burn-out ratio was about 100%, and the predicted calcium carbonate decomposition ratio was 96.14%. The results were in good agreement with actual measurement and can be used for further study to structure optimization design of precalciner.
- Copyright
- © 2016, 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/).
Cite this article
TY - CONF AU - Xiaolin Chen AU - Junlin Xie AU - Shuxia Mei AU - Shasha Shen PY - 2017/07 DA - 2017/07 TI - Numerical Simulation of Gas-solid Flow and Pulverized Coal Combustion in a Swirl Chamber Precalciner BT - Proceedings of the 2016 6th International Conference on Advanced Design and Manufacturing Engineering (ICADME 2017) PB - Atlantis Press SP - 301 EP - 306 SN - 2352-5401 UR - https://doi.org/10.2991/icadme-16.2016.47 DO - 10.2991/icadme-16.2016.47 ID - Chen2017/07 ER -