Question 431Steam Plants - Assistant Engineer
70% to passIf the flue gas oxygen content is too high, you should _______________.
Aincrease the forced draft fan speed
Bincrease the fuel oil temperature
Cadjust the combustion control system
Dadjust the fuel oil service system
AI Explanation
The correct answer is C) adjust the combustion control system. If the flue gas oxygen content is too high, it indicates that there is too much excess air in the combustion process. This means that the combustion control system needs to be adjusted to reduce the amount of air being drawn into the boiler, which will in turn lower the oxygen content in the flue gas. Increasing the forced draft fan speed (A) or adjusting the fuel oil temperature (B) or service system (D) would not directly address the high oxygen content issue.
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