The density of diesel at normal pressure is not up to standard
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The density of the fuel produced by the atmospheric and vacuum distillation unit does not meet the required standards; it is too high. Why then can reducing the amount of this fuel sent out lower its density? How is it possible to make the Isuzu lighter? What is the principle behind this? Please those who know explain it, thank you
Reducing the amount of material sent out by Changchai can lower the pressure in the overall system, which facilitates the release of gases or the separation of components with high volatility. This in turn reduces the density and makes Changchai lighter. This primarily makes use of the physical relationship between pressure and density. .
It seems that the extraction volume from the atmospheric pressure diesel section is too high, resulting in insufficient liquid sealing at the tray levels and poor distillation efficiency; as a consequence, some of the heavier fraction oils are carried over into the diesel fraction. Reducing the extraction volume can increase the thickness of the liquid seal, resulting in better fractionation effects. The specific situation requires an analysis of the entire distillation system.
How can reducing the amount of material sent out by Seikiba lower the pressure in the tower?
Reducing the amount of fuel sent for delivery actually means pushing the heavier components within the normal diesel to the bottom as residue; regular first-grade and second-grade diesel is inherently much lighter than regular third-grade diesel.
Isn’t this just the most basic knowledge of refining? A high density indicates that the control level for diesel is too high; the portion that should have gone into residue ends up in heavy diesel.
It’s essentially like forcing diesel into wax oil. The diesel load has decreased relatively.