Most commonly used crude heater before the fractionation tower in a refinery is the ______________ heater?
Correct answer: B. Pipestill
- A. Electric immersion
- B. Pipestill
- C. Steam coil
- D. None of these
Explanation
A pipestill, or fired tubular heater, heats crude by passing it through tubes exposed to hot combustion gases before it enters the fractionation tower. Electric immersion and steam-coil heaters are not the usual main crude-heating arrangement in refineries.
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