High-pressure lubricating oil hydrogenation
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I would like to ask the experts: When high-pressure hydrogenation of lubricating oils is used, especially for base oils derived from naphthenes through high-pressure hydrogenation, high-pressure hydrogenation refining is generally employed, followed by dewaxing and further refining. So here’s the question: If lubricating oils are not being produced, can this facility be used for other purposes? For example, would it work to use the front-end lubricant refining section for diesel hydrorefining? Experts, please help clarify this!
It is demonstrated from aspects such as process (operating conditions), equipment (corrosivity), and catalysts.
Lubricating oil treatment involves the removal of OSN and aromatic compounds; diesel hydrogenation is mainly aimed at removing SN compounds. High-pressure lubricating oil hydrogenation entails a more thorough refinement of the lubricating oil, while for diesel, it is sufficient to remove SN compounds – reducing the pressure should be sufficient to achieve this.
Is there anyone from a design firm who can help review my proposal?
Yes, the feed oil can be of grades such as Constant 1, Constant 2, or Reduced 1; by lowering the bed temperature, it is possible to reduce cracking while still ensuring effective desulfurization and nitrogen removal, thereby increasing profitability and enabling the production of fuel with low sulfur and nitrogen content.
The hydrogenation process for lubricating oils in China generally follows a two-stage approach, with the first stage being used for diesel hydrogenation