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Technology Type

Crude Atmospheric Distillation

Process
Crude Oil Processing
Abbreviation
Description

Crude Oil low boiling fractions usually vaporize below 400°C at Atmospheric Pressure without Cracking the Hydrocarbon Compounds.

Therefore, all the Low Boiling Fractions of Crude Oil are separated by Atmospheric Distillation. A Crude Distillation Unit (CDU) consists of Pre-Flash Distillation Column. The vapors from the top of the column are a mixture of Hydrocarbon Gases (e.g., Methane, Ethane, Propane, Butane) and Naphtha vapors, at a Temperature of 120 °C - 130 °C. A few Plates below the Top Plate, the Kerosene is obtained as product at a Temperature of 190 °C - 200 °C. A few Plates below the Kerosene Draw Plate, the Diesel fraction is obtained at a Temperature of 280 °C - 300 °C. Residual oil present at the bottom of the Column is known as Reduced Crude Oil (RCO). The Temperature of the stream at the bottom is 340 °C - 350 °C, which is below the Cracking Temperature of Oil.

 

Link
https://www.eia.gov/todayinenergy/detail.php?id=6970
System Info

Updated by
UserPic  Braun, Uwe
Updated
8/6/2023 4:47 PM
Added
11/9/2021 5:49 AM
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https://youtu.be/PsR5QCIovSI @ 1 min 16 sec (VALERO ENERGY)
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https://www.youtube.com/user/ValeroEnergy1
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