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- Title
Study of nitrogen oxide absorption in the calcium sulfite slurry.
- Authors
Sun, Ye; Meng, Yuan; Guo, Xiaoyan; Zhu, Tianle; Liu, Hongju; Li, Wenpei
- Abstract
Experiments were conducted using a bubbling reactor to investigate nitrogen oxide absorption in the calcium sulfite slurry. The effects of CaSO concentration, NO/NO mole ratio and O concentrations on NO and SO absorption efficiencies were investigated. Five types of additives, including MgSO, NaSO, FeSO, MgSO/NaSO and FeSO/NaSO, had been evaluated for enhancing NO absorption in CaSO slurry. Results showed that CaSO concentration had significant impact on NO and SO absorption efficiencies, and the highest absorption efficiencies of SO and NO could reach about 99.5 and 75.0 %, respectively. Furthermore, the NO absorption was closely related to the NO/NO mole ratio, and the existence of NO in flue gas may promote NO absorption. The presence of O in simulated flue gas was disadvantage for NO removal because it can oxidize sulfite to sulfate. It was worth pointing out that FeSO/NaSO was the best additive among those investigated additives, as the NO removal efficiency was significantly increased from 74.8 to 95.0 %. IC and in situ FTIR results suggest that the main products were NO and NO in liquid phase and NO, NO and HNO in gas phase during the CaSO absorption process.
- Subjects
NITROGEN oxide absorption &; adsorption; CALCIUM sulfite; SLURRY; FLUE gases; ADDITIVES; MANUFACTURED products
- Publication
Journal of Material Cycles & Waste Management, 2016, Vol 18, Issue 4, p618
- ISSN
1438-4957
- Publication type
Article
- DOI
10.1007/s10163-016-0526-8