Solvents emitted from industrial operations can become significant pollutants if not disposed of properly. A chromatographic study of the waste exhaust gas from a synthetic fiber plant has the following analysis in mole percent:
CS | 40% |
SO | 10% |
HO | 50% |
It has been suggested that the gas be disposed of by burning with an excess of air. The gaseous combustion products are then emitted to the air through a smokestack. The local air pollution regulations say that no stack gas is to analyze more than 2% SO2 by an Orsat analysis averaged over a 24 hr period. Calculate the minimum percent excess air that must be used to stay within this regulation.
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