The issue of unloading and heating crude oil by train
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Recently, a new batch of crude oil for trains has arrived; it is Mongolian crude oil. Since it is necessary to calculate the heating time, some information is missing, and I am seeking advice from everyone on the calculation methods and relevant parameters. Available data: The density of Mongolian crude oil at 20°C is 873.3 kg/m3 ； The dynamic viscosity at 50°C is 64.4 mm2/S ； The freezing point is 34°C. The sulfur and nitrogen contents are 0.13% and 0.21% respectively, while the salt content and acid value are 106 mg NaCl/l and 0.36 mg KOH/g respectively ； Residue is 4.02% on a mass basis, and ash content is 0.018% on a mass basis ； In terms of the crude oil distillation range, the fraction distilled before 300°C is 21.3% (V%). The requested information is as follows: 1. Calculation parameters for the heat capacity of Mongolian crude oil. 2. The heat transfer coefficient for heat transfer from the inner wall of the heating jacket to the oil inside the tank. 3. Calculation method for the heating time of crude oil tankers, with examples; example problems are the best
If it’s just a matter of calculating the heating time, there’s no need to go through such complicated procedures. Usually, we simply start the heating process and then observe the temperature changes over several hours in order to determine the total time required. If you calculate it based on theoretical data, it may not necessarily be accurate
It means that the first column has been unloaded; now it’s time to prepare a summary. This summary needs to include calculations regarding the heating time, and it has to be submitted – it’s really frustrating! The data is incomplete; it’s based on some indicators related to Shengli Oil, and the figures differ greatly from the actual values. It’s possible there’s an issue with my calculation skills as well! Hehe
Go check out the technical exchange area for calculation software; you should find something useful there.
Detailed calculation formulas and examples can be found on pages 553 to 559 of the \"Oil Storage and Transportation Design Manual\" (Volume 1), edited by Li Zhengxi and Xu Siwen.
In Guo Guangcheng’s book on tank farm design and management, it is mentioned that