Formation reasons of ammonium bisulfate in SCR flue gas deNOx process and cleaning method

Abstract

Abstract: Abstract:The formation reasons and the characteristics of the ammonium bisulfate (ABS) formed by SCR flue gas deNOx system in air preheater cold end were analyzed. An off-line hot water washing method to clean the ammonium bisulfate dirt was proposed. The process flow and the operation parameters of the cleaning method were expounded, and the matters needing attention in cleaning process were pointed out. The practical use shows that the result of the cleaning method is favorable.

Key words: Keywords:selective catalytic reduction (SCR) method, air preheater, ammonium bisulfate (ABS), hot water, wash

ZENG Biqun1, YAO Yougong1, YANG Bo1, WANG Lele2. Formation reasons of ammonium bisulfate in SCR flue gas deNOx process and cleaning method[J]. Huadian Technology, 2015, 37(1): 40-41.

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Formation reasons of ammonium bisulfate in SCR flue gas deNOx process and cleaning method

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