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The document summarizes the composition of effluent gas from a heat recovery steam generator (HRSG). It finds that the gas is mostly nitrogen (73.5%) and oxygen (15%), with smaller amounts of carbon dioxide (5.5%), water (4.7%), and argon (1.3%). It then discusses low temperature corrosion issues for HRSG heat exchanger tubes caused by sulfuric and carbonic acids forming from sulfur dioxide and carbon dioxide in the exhaust gas. Maintaining tube temperatures below acid dew points can prevent this corrosion.

Author

Sagar Dhumane

Language

EN