1-Approximately 130,000 tons (118 @106 kg) of coal are burned each year at the I
ID: 1847784 • Letter: 1
Question
1-Approximately 130,000 tons (118 @106 kg) of coal are burned each year at the IowaState University Power Plant. The coal is barged up from Kentucky to Davenport and
trucked to Ames. Kentucky coal typically has a 2% sulfur content. What would be
the average daily output (in kg/d) of sulfur dioxide (SO2) assuming that 4% of the
sulfur content of the coal ends up in the ash (i.e. 4% of S is unreacted) and the rest is
released in the stack gas?
2-As a rough approximation, the average oxygen content of dry air is about 21% by
volume. If 20% excess air is used in the combustion process, how much air will be
required each day?
3- What would be the concentration of SO2 in the stack gas if no pollution control
equipment is used? Calculate your result on both a mass (g/m3) and volume (ppm)
basis.
ANSWER THE LAST TWO QUESTIONS ONLY
Explanation / Answer
6.46*10^3kg/day
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