Experimental research on the volatilization and condensation of ammonium bisulfate as SCR byproduct

In this paper, the research progress of ammonium bisulfate (ABS) volatilization in coal-fired power plants the SCR denitrification process was reviewed. Combination with self-made experiments, SEM, flue gas analyzer and TG-DTG curves of ABS and ion chromatography. The volatilization and condensation...

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Bibliographic Details
Published in:Polish journal of chemical technology 2022-12, Vol.24 (4), p.30-38
Main Authors: Jiao, Kunling, Ma, Shuangchen, Chen, Xiangyang, Liu, Jiaming, Qiao, Lin
Format: Article
Language:English
Subjects:
Ammonia
Ammonium bisulfate (ABS)
By products
Coal
Coal-fired power plants
condensation pattern
Corrosion
Decomposition
Decomposition reactions
Dehydration
Electric power
Environmental science
Flue gas
Gas analyzers
Heat
influencing factors
Power plants
Temperature control
Vaporization
volatilization rate
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Summary:In this paper, the research progress of ammonium bisulfate (ABS) volatilization in coal-fired power plants the SCR denitrification process was reviewed. Combination with self-made experiments, SEM, flue gas analyzer and TG-DTG curves of ABS and ion chromatography. The volatilization and condensation characteristics of ABS were investigated carefully. Results show that as the temperature increased by 50 C, the ABS/AS volatilization rate increased by an order of magnitude. The decomposition process of ABS should have a two-step reaction. The reaction in the initial volatiliza-tion stage is ABS dehydration turned into (NH . The reaction in the rapid volat-ilization stage is (NH decomposed into NH3, N , SO and H2O. There is an inter-section in the reaction temperature range (especially 300 C) between the two-step re-action. This research provides an experimental basis for temperature control of ABS to avoid air pre-heater fouling.
ISSN:1899-4741
1509-8117
1899-4741
DOI:10.2478/pjct-2022-0026