Regarding the issues of hydrodesulfurization of kerosene and the upgrade to National V low-freezing-point standards, what is the sulfur content in kerosene after hydrogenation?

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As the title suggests: Kerosene hydrogenation does not remove sulfur; it mainly removes mercaptans and acids. After such treatment, the total sulfur content is around 100 ppm. However, in the production of low-temperature diesel (e.g., at -30°C), it is necessary to mix kerosene with diesel. Due to the high sulfur content in kerosene, the requirements specified for National Standard V cannot be met. My questions are: 1. What is the total sulfur content after kerosene is desulfurized? Can it reach 10 ppm? 2. What are the measures to increase kerosene production, and what methods exist for converting diesel into kerosene? The quality specifications for jet fuel No. 3 are as follows: total sulfur content not exceeding 2000 ppm, thiol sulfur content not exceeding 20 ppm, and acid value not exceeding 0.015 mgKOH/g. It can be seen that the main purposes of kerosene refining are to remove acids, thiol sulfurs, and colorants; total sulfur is not removed in this process. This applies to the hydrogenation processes used in LPG, gasoline, and diesel production