[1] Zhao Jie, Jin Baosheng, Xu Yin,. CFD simulation of ammonia-based CO2 absorption in a spray column [J]. Journal of Southeast University (English Edition), 2015, 31 (4): 479-488. [doi:10.3969/j.issn.1003-7985.2015.04.009]
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CFD simulation of ammonia-based CO2 absorption in a spray column(
)
)Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]
- Volumn:
- 31
- Issue:
- 2015 4
- Page:
- 479-488
- Research Field:
- Energy and Power Engineering
- Publishing date:
- 2015-12-30
Info
- Title:
- CFD simulation of ammonia-based CO2 absorption in a spray column
- Author(s):
- Zhao Jie; Jin Baosheng; Xu Yin
- Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, Southeast University, Nanjing 210096, China
- PACS:
- TK09
- DOI:
- 10.3969/j.issn.1003-7985.2015.04.009
- Abstract:
- A comprehensive computational fluid dynamics(CFD)model is developed based on the gas-liquid two-phase hydrodynamics, gas-liquid mass-transfer theory and chemical reaction kinetics, and the ammonia-based CO2 absorption in a spray column is numerically studied. The Euler-Lagrange model is applied to describe the behavior of gas-liquid two-phase flow and heat transfer. The dual-film theory and related correlations are adopted to model the gas-liquid mass transfer and chemical absorption process. The volatilization model of multi-component droplet is utilized to account for ammonia slippage. The effect of operation parameters on CO2 removal efficiency is numerically studied. The results show a good agreement with the previous experimental data, proving the validity of the proposed model. The profile studies of gas-phase velocity and CO2 concentration suggest that the flow field has a significant impact on the CO2 concentration field. Also, the local CO2 absorption rate is influenced by both local turbulence and the local liquid-gas ratio. Furthermore, the velocity field of gas phase is optimized by the method of adjusting the orifice plate, and the results show that the CO2 removal efficiency is improved by approximately 4%.
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Memo
- Memo:
-
Biographies: Zhao Jie(1991—), female, graduate;Jin Baosheng(corresponding author), male, professor, bsjin@seu.edu.cn.
Foundation item: The National Natural Science Foundation of China(No.51276038).
Citation: Zhao Jie, Jin Baosheng, Xu Yin.CFD simulation of ammonia-based CO2 absorption in a spray column[J].Journal of Southeast University(English Edition), 2015, 31(4):479-488.[doi:10.3969/j.issn.1003-7985.2015.04.009]