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The damage of moisture to catalysts in flue gas acid production

2026-02-26View Original

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The harm of moisture to catalysts in flue gas acid production: Moisture combines with sulfur trioxide (SO3) inside the converter and is converted into sulfuric acid vapor. Within the pores of the catalyst, sulfuric acid vapor forms condensed acid, which dissolves the active components in the catalyst. This leads to a decrease in the catalyst’s activity, as well as to powdering and caking phenomena, resulting in an increase in the resistance of the bed. Meanwhile, the condensed acid also causes corrosion to the equipment.

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