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H2S content of acid gas (Y), % Sulfur feed rate (X), LT/D
2.0 ≤ X ≤ 5.0 5.0 < X ≤ 15.0 15.0 < X ≤ 300.0 X > 300.0
X = The sulfur feed rate from the sweetening unit (i.e., the H2S in the acid gas), expressed as sulfur, Mg/D(LT/D), rounded to one decimal place.
Y = The sulfur content of the acid gas from the sweetening unit, expressed as mole percent H2S (dry basis) rounded to one decimal place.
Z = The minimum required sulfur dioxide (SO2) emission reduction efficiency, expressed as percent carried to one decimal place. Zi refers to the reduction efficiency required at the initial performance test. Zc refers to the reduction efficiency required on a continuous basis after compliance with Zi has been demonstrated.
Y ≥ 50 74.0 85.35X 0.0144Y 0.0128 or 99.9, whichever is smaller.
20 ≤ Y < 50 74.0 85.35X 0.0144Y 0.0128 or 97.5, whichever is smaller 97.5
10 ≤ Y < 20 74.0 85.35X 0.0144Y 0.0128 or 90.8, whichever is smaller 90.8 90.8
Y < 10 74.0 74.0 74.0 74.0

[78 FR 58447, Sept. 23, 2013]

['Air Programs']
['Air Quality']
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