What are the functions of the stripping steam at the bottom of a distillation tower?
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What are the functions of the stripping steam at the bottom of a distillation tower?
The main goal is to reduce the partial pressure of oil and gas inside the tower. Thanks to the effect of the stripping steam, stripping steam is used at the bottoms of both atmospheric and reduced-pressure towers, which allows petroleum fractions to vaporize at lower boiling points and increases the vaporization rate of the feed. On the other hand, it enables the light components in the liquid phase below the feed section to vaporize, reducing the content of light components in the oil at the tower bottom and thereby increasing the recovery rate of light oils.
In addition to what was mentioned above, the steam at the bottom of the catalytic fractionation tower serves another important function: stirring. It accelerates the turbulence of the material at the bottom of the tower and prevents the accumulation of catalyst dust.
The description upstairs is accurate. \ud83d\udc4d
The vapor at the bottom of the catalytic fractionation tower has only a stirring effect.
What is being said is that the original poster asked about the stripping steam at the bottom of the distillation column, without specifying whether it was a catalytic one; the steam at the bottom of a catalytic distillation column is called stirring steam.
Stirring accelerates and improves the reaction of the materials