Acid dew point temperature (ADT) of a flue gas produced by the combustion of a fuel containing 1% sulphur may be about ____________ °C?
Correct answer: B. 130
- A. 80
- B. 130
- C. 180
- D. 250
Explanation
Sulphur in the fuel forms sulphur oxides, mainly SO₂ with some SO₃, and the resulting sulphuric-acid vapour condenses at an acid dew point commonly near 120 to 150°C. Thus, about 130°C is the suitable value.
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