Calculation of refrigerated hydrogen capacity for straight-run diesel hydrotreating
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Question: How to calculate the hydrogen content of straight-run diesel hydrofinishing?
I think this should be based on the sulfur, nitrogen content and other impurity contents, and then theoretically calculate the heat released by hydrogenation to remove these impurities, combined with the allowable temperature rise of the catalyst bed, this should be able to be calculated.
The temperature rise of straight-run diesel hydrogenation is generally not large, and there is usually no need to cool the hydrogen.
This must be determined based on the heat balance. Hydrogenation is an exothermic process. First, determine the heat release of the reaction. Secondly, determine the reaction temperature rise. Generally, the reaction temperature rise of a single bed layer is not greater than 50 degrees. Then calculate the heat required for the temperature rise of the reaction material by 50 degrees. If the heat release of the reaction is greater than the heat required for the temperature rise, cold hydrogen needs to be added to cool down to the inlet temperature. At this time, the amount of cold hydrogen is determined according to the heat balance layering, and finally the heat is checked.