How should the discharge port of a vertical atmospheric pressure tank be designed to ensure thorough material removal each time? ? ?
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How should the discharge port of a vertical atmospheric pressure tank be designed to ensure thorough material removal each time? ? ? The extraction port of our tanks is designed to be 20 centimeters above the bottom of the tank, which results in a large amount of material not being able to be extracted each time; this leads to inventory buildup, capital occupation, and significant waste.
Add a well at the bottom of the tank. We actually have this structure; it’s just not used on a regular basis, only when production stops and the tank needs to be emptied. The tank outlet pipe bends downward here and is inserted into the well.
Leaving 20 centimeters from the bottom of the tank is intended to prevent impurities present in the material, as well as rust, paint, slag and other contaminants from the tank itself, from being drawn into the pump and damaging the impeller. Normal operation does not require such a high level of cleanliness; only during shutdowns or maintenance tasks should water be filled to a level of over 30 centimeters first, after which the material can be pumped. Once the tank level drops by 30 centimeters, the pump should be stopped, and the water should then be drained through the drainage outlet at the bottom of the tank. Of course, it depends on the specific material. We have oil tanks here, so water can be used as a cushion.
By the way, it’s used when emptying and cleaning the tank. What exactly is the structure of the well you’re talking about?
What exactly is the structure of the well you’re talking about? Could you send a photo or something?
Isn’t it difficult to draw it down to the bottom? Make an opening at the very bottom so that the remaining liquid can flow out by gravity
It’s that pit-like structure used in vertical pumps; a small one can be created at the lowest point