About the selection of soaking oil for feed oil filter of hydrogenation unit
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The raw oil filter of the hydrogenation unit generally needs to be soaked in oil to dissolve impurities such as colloids on the filter element after backwashing. The soaking oil for the filters of several units I encountered uses refined or cracked diesel produced by the unit itself. I would like to ask you experts whether you can choose straight-run diesel from a normal and vacuum device for soaking oil. In comparison, which diesel is better and why? Thank you~
The diesel produced by the hydrocracking unit is good, with less impurities in the raw material, low sulfur content, and little odor. Atmospheric diesel does not have these advantages, and atmospheric diesel also has a strong smell of hydrogen sulfide, which is unbearable when cleaning. We use hydrocracking self-produced diesel when cleaning.
Straight-run diesel from atmospheric and vacuum units contains more impurities and can be used for cleaning, but it is not as good as refined diesel.
The explanation on the second floor is very sufficient. The diesel produced by the hydrogenation unit is good, with few impurities and low sulfur content. Furthermore, why should we choose the farthest place over the near?
You are referring to the Bohr filter, right? Jinling Hydrocracking has such a set. They use cracked diesel, which has relatively good solubility. As you said, it will definitely not work with straight-burning diesel, let alone the second-line and third-line filters. Even the regular first line used to produce jet fuel is not good. There are too many impurities and the filter cannot handle it.