What is a head tank?
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I have a question: What is the definition of a head tank? One of our companies’ intermediate tanks uses nitrogen pressure to move the material inside the tank; it’s just that this intermediate tank is located at a relatively high height ； Does this type of intermediate tank belong to the high-level tank category? Some designers say that a high-level tank refers only to a tank that relies on the weight of the material itself to drive the flow ； I searched through many standards but couldn’t find a definition for “high-level tank” ； Let’s discuss it together.
Thank you for the reply. Can you find the standard reference on your end?
It should be the pressure generated by the gravity of the material itself that serves as a liquid seal
It is correct that a high-level tank refers to a tank that relies on the weight of the material itself to push it forward. There is no standard for such things; it’s just a common term used. For example, the thickener located above a centrifuge also counts as a high-level tank, even though its actual height is only 4 meters
This term of ‘high-level tank’ is merely a term used in process engineering; it is not mentioned in any relevant standards, whether they are petrochemical standards or construction codes. It just means that the material is stored in an upper-level buffer; it can be under pressure or not.
It’s named according to its functional role in the manufacturing process