An atmospheric distillation unit in a crude oil refinery, is used to separate different hydrocarbon components of a crude oil mixture to be used for a variety of applications as products of crude oil refining.

What is used in atmospheric distillation unit?

A crude distillation unit (CDU) consists of pre-flash distillation column. The petroleum products obtained from the distillation process are light, medium, and heavy naphtha, kerosene, diesel, and oil residue.

What is atmospheric distillation process?

Atmospheric distillation is the first and most fundamental step in the the refining process. The primary purpose of the atmospheric distillation tower is to separate crude oil into its components (or distillation cuts, distillation fractions) for further processing by other processing units.