Notice of RetractionAnalysis of kinetics mechanism on NOx removal by hydrazine at moderate to high temperatures

Notice of Retraction

After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.

We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.

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This paper studies the kinetics mechanism of NO reduction by hydrazine in SNCR process and verifies the kinetics mechanism in experiments, find out the dominant radicals and reactions by sensitivity analysis. Results of this paper are concluded by analyzing the effects of different parameters in SNCR process. The result of numerical simulation show that the temperature window of hydrazine is in the range of 870~1020K and the optimum temperature is 948K; the results of experiments show that the temperature window of hydrazine-based SNCR is 860~980K and the optimum temperature is 926K. It is found that the kinetics mechanism in this paper can simulate the hydrazine-based SNCR process by numerical simulation and experimental verification. It is confirmed that the most helpful reaction to reduce NO is the decomposition reaction of hydrazine and the most helpful radical is NH₂ radical; the decrease of O₂ concentration can broaden the temperature window of SNCR on the high temperature side, and increasing of N₂H₄/NO mole ratio can also broaden the temperature window when the mole ratio is less than 2.0, the proposal of optimum N₂H₄/NO mole ratio is 2.0.