Corrosion of the flue gas side of the...

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Question 1 of 205eccefa0bacbc34ba4d46e65

Corrosion of the flue gas side of the economizer can be a result of the __________. stack gas temperature being lower than the dew point feed water temperature being excessively cool

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5eccefa0bacbc34ba4d46e65

Corrosion of the flue gas side of the economizer can be a result of the __________. stack gas temperature being lower than the dew point feed water temperature being excessively cool

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🔍 Key Concepts

• Economizer operation and purpose in a marine boiler system • How dew point of flue gases relates to sulfur content and acid formation (cold-end corrosion) • Effect of feedwater temperature on metal surface temperature in the economizer tubes

💭 Think About

• For statement I: What happens on the gas side and tube metal temperature when stack gas temperature falls below its dew point? How does that affect condensation of acidic vapors? • For statement II: If feedwater is very cool, what does that do to the temperature of the metal surfaces in the economizer, and how might that interact with flue gases that contain moisture and acidic components? • Ask yourself whether each condition alone could create a tube surface temperature at or below the flue gas dew point, and what that implies for corrosion risk.

✅ Before You Answer

• For each statement, decide: does this condition tend to make metal surface temperature closer to or below the flue gas dew point? • Remember that acidic condensate forms when gas is cooled below its dew point on a surface; verify which of the two listed conditions encourages this. • Check whether corrosion risk is related more to gas temperature alone, water temperature alone, or the combined effect on the tube metal surface temperature.

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Question 1 of 205eccefa0bacbc34ba4d46e65

Corrosion of the flue gas side of the economizer can be a result of the __________. stack gas temperature being lower than the dew point feed water temperature being excessively cool

Back

Question 1 of 20

5eccefa0bacbc34ba4d46e65

Corrosion of the flue gas side of the economizer can be a result of the __________. stack gas temperature being lower than the dew point feed water temperature being excessively cool

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

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