The boiling point is lower.
numerator
Duncan XYZ oil would be tapped off closer to the top of a fractionating column because it is viscous (runny)
The top of an oil fractionating column is where the lighter hydrocarbon fractions, such as gases and light liquids, are collected and removed from the column. This process separates the different components of crude oil based on their boiling points.
The fractionating column takes advantage of the fact that the different parts (fractions), which form the mixture known as crude oil, boil (or evaporate) at different temperatures. The fractionating column is effectively an advanced distillation process. The bottom part of the column is the hottest part where heavy fractions such as tar do not evaporate, but lighter fractions will boil off and travel upwards through the column. The top part of the column is the coolest part where only the lightest fractions form a vapour. At various points between the top and bottom, the different fractions condense into liquids at different temperatures and can be drawn off in purified liquid form.
The fractionating column is usually filled with glass or plastic beads. These beads improve the separation between the liquids being distilled. The reason that fractional distillation gives better separation between the liquids is because the glass beads in the fractionating column provide "theoretical plates" on which the refluxing liquid can condense, re-evaporate, and condense again, essentially distilling the compound over and over. The more volatile liquids will tend to push towards the top of the fractionating column, while lower boiling liquids will stay towards the bottom, giving a better separation between the liquids.
The first fraction to separate out of petroleum during fractional distillation is usually the lightest fraction, which includes gases like methane, ethane, and propane. These fractions have lower boiling points and are typically collected at the top of the fractionating column.
The fractionating tower is hotter at the bottom. As the temperature gradually decreases from the bottom to the top of the tower, the different components in the mixture condense at specific levels based on their respective boiling points, allowing for separation.
The decorative top of a column is called the capital.
The decorative top of a column is called the capital.
It is a heading found at the top of a column.
Insert a column break.
Letter at the top of the column.