Atmospheric and Vacuum Distillation Unit (II)

Thread Content

1. The feed and products of the atmospheric distillation column are both complex mixtures. 2. The atmospheric distillation column is a composite column structure (with side products). 3. A stripping section is located at the lower part of the atmospheric distillation column, and a stripping column is used for the side products. To facilitate the boiling and vaporization of the heavier fractions in crude oil at lower temperatures, in addition to vacuum distillation, high-temperature steam can also be introduced into the crude oil being distilled during the distillation process; this is known as stripping. Stirring effectively reduces the partial pressure of oil and gas, similar to the effect of vacuum; moreover, it is simpler to operate, which is why it is widely used in crude oil distillation processes. However, steam generation consumes a large amount of steam and increases the demand for cooling water; therefore, it works better when used in combination with pressure reduction.