What are the common features of diesel hydrogenation and gasoline hydrogenation?
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What are the common features of diesel hydrogenation and gasoline hydrogenation? Why is there such a big difference in operating pressure?
Common points: The main purpose is hydrogenation desulfurization. The difference in reaction pressure is due to the molecular structure; gasoline molecules have a relatively simple structure, making reactions easier to occur, while diesel molecules have a more complex structure, which makes reactions harder to take place and requires high pressure to ensure a satisfactory conversion rate.
It’s all about hydrogenation to remove impurities. The high pressure in diesel hydrogenation is due to the large number of C atoms in diesel, which results in strong intermolecular forces; to break these molecules, it is necessary to increase their kinetic energy, and raising the pressure serves this purpose.