Straight-run atmospheric distillation of crude oil typically yields around __________________ percent of kerosene?
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Answer: B. 10
Explanation
Atmospheric distillation separates crude oil into various boiling fractions based on their relative volatility and molecular weight. Kerosene is a middle distillate fraction collected between naphtha and gas oil during standard crude oil fractionation. Typical sweet or intermediate crude oils yield approximately ten percent kerosene by volume during atmospheric distillation. Crude oil distillation units heat petroleum feedstock in a furnace before introducing it into a fractionation column. Middle distillates include kerosene and diesel fractions used widely for heating, jet fuel, and diesel engine fuels. Fractional distillation yields vary depending on the geological origin and paraffinic or naphthenic nature of the crude oil.
Option A represents four percent, which is too low and underestimates typical kerosene yields from standard atmospheric columns. Option C represents eighteen percent, which exceeds the normal straight-run atmospheric kerosene fraction for most crudes. Option D represents twenty-six percent, a volume percentage typically associated with heavier gas oil or diesel cuts.
- Subject
- Engineering
- Category
- Chemical Engineering
- Topic
- —
- Difficulty
- medium
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