Journal of Zhejiang University SCIENCE A
ISSN 1673-565X(Print), 1862-1775(Online), Monthly

2009   Vol. 10   No. 3   p. 434~438

On-line Access Date:   Mar. 12, 2009
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Absorption of NO2 into Na2S solution in a stirred tank reactor

Xiang GAO†1, Rui-tang GUO1,2, Hong-lei DING1, Zhong-yang LUO1, Ke-fa CEN

(1State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China)
(2School of Energy Source and Environmental Engineering, Shanghai University of Electric Power, Shanghai 200090, China)
†E-mail: xgao@zju.edu.cn
Received Sept. 11, 2008; revision accepted Nov. 18, 2008

Abstract: To understand the absorption mechanism of nitrogen dioxide into a sodium sulfide solution, a stirred tank reactor with a plane gas-liquid interface was used to measure the chemical absorption rate of diluted nitrogen dioxide into sodium sulfide solution. The absorption rates under various experimental conditions were measured and the effects of experimental conditions on nitrogen dioxide absorption rate were discussed. The results show that, in the range of this study, nitrogen dioxide absorption rate increases with increasing sodium sulfide concentration, nitrogen dioxide inlet concentration, and flue gas flow rate, but decreases with increasing reaction temperature and oxygen content in flue gas.

Key words: Nitrogen dioxide, Gas-liquid reaction, Kinetics, Absorption
doi:10.1631/jzus.A0820657             CLC number: X7

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