Effects of NH<sub>3</sub> and SO<sub>3</sub> on the generation of ammonium bisulfate and ammonium sulfate

YANG Jian-guo; YANG Wei-ying; ZHENG Fang-dong; ZHAO Hong

Volume 46 Issue 1

Jan. 2018

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YANG Jian-guo, YANG Wei-ying, ZHENG Fang-dong, ZHAO Hong. Effects of NH3 and SO3 on the generation of ammonium bisulfate and ammonium sulfate[J]. Journal of Fuel Chemistry and Technology, 2018, 46(1): 92-98.

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YANG Jian-guo, YANG Wei-ying, ZHENG Fang-dong, ZHAO Hong. Effects of NH₃ and SO₃ on the generation of ammonium bisulfate and ammonium sulfate[J]. Journal of Fuel Chemistry and Technology, 2018, 46(1): 92-98.

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Effects of NH₃ and SO₃ on the generation of ammonium bisulfate and ammonium sulfate

1.
State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China
2.
Shanghai Electric Power Co, Shanghai 200010, China

Funds:

the Zhejiang Provincial Natural Science Foundation of China LY15E060002

More Information

Corresponding author: ZHAO Hong, Tel: 0571-87951322, E-mail: zhaohong@zju.edu.com
Received Date: 2017-08-01
Rev Recd Date: 2017-10-19

Available Online: 2021-01-23

Publish Date: 2018-01-10

Abstract

Abstract

In order to study the influence of reactant concentration on the formation of ammonium bisulfate and ammonium sulfate, a simulating flue gas system with a more accurate composition of SO₃ was established. The starting temperature of ammonium bisulfate is about 230-270℃ and the peak temperature is about 180-240℃ under the experimental condition. The starting temperature and peak temperature of ammonium sulfate are about 40℃ lower than that of ammonium bisulfate. The formation of ammonium bisulfate is obviously higher than that of ammonium sulfate. With different concentration and molar ratio of NH₃ and SO₃, the formation rate of ammonium bisulfate is about 64%-90%, about 6-10 times of that of ammonium sulfate with about 6%-15% at 120℃. The increase of reactant concentration can promote the formation of both ammonium bisulfate and ammonium sulfate. And SO₃ is more conducive to the formation of ammonium bisulfate than NH₃. Further analysis shows that the variation curve of the generation fraction of ammonium bisulfate and ammonium sulfate with temperature presents a single peak. As the reactant concentration increases, the temperature range at which the peak is located increases gradually.
- ammonium bisulfate,
- ammonium sulfate,
- NH₃,
- SO₃,
- concentration,
- formation rate,
- formation speed

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References(31)

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