Some questions about liquid carbon dioxide storage tanks
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This post was last edited by SuperFree2316 on 2009-10-20 21:43. I have only designed double-layer low-temperature insulated liquid nitrogen, liquid oxygen and other storage tanks before. Now due to my work, I need to design a liquid carbon dioxide storage tank (low-temperature insulated powder, with pearlescent sand in the middle). I wonder if the "dry ice" issue needs to be considered in the process of this storage tank? ? That is, will "dry ice" be produced in the tank during use? If you need to consider how to avoid it? ? Please help me. If anyone has relevant design information, I would like to give you a copy. I would be very grateful. Also, if there is no need to consider the "dry ice" problem, can the structure of this storage tank be designed based on the structure of the liquid nitrogen and liquid oxygen low-temperature insulated powder storage tank? (Just talking about the structural form)
There is no need to consider the "dry ice" problem. The structure of the storage tank can be designed based on the structure of the liquid nitrogen and liquid oxygen low-temperature insulated powder storage tank!
Can the moderator explain? Why not think about it?
There is also a small question. Does this type of carbon dioxide storage tank need to open a manhole?
How big is the storage tank and what material is it made of? Stainless steel can be considered as unopened. The dry ice issue should be considered in the storage tank to ensure that there is a certain pressure in the tank to prevent the generation of dry ice.
Is it necessary to open a manhole for the 16MnDR inner tank? Are there any relevant regulations or standards for 15 cubic meters? Give me a recommendation
Please help? ? No one to help?
The low-temperature insulated storage tank uses GB18442. The liquid carbon dioxide storage tank has a much higher operating temperature than liquid oxygen, so the inner tank uses 16MnDR, and there is no need to open a manhole. The structure is exactly the same as that of liquid oxygen.
The temperature of liquid carbon dioxide is much higher than that of liquid oxygen, so you can just use a 16MnDR single-layer tank. According to the capacity regulations, a manhole must be added. Just design according to GB150.
If you want to add manholes, there are conditions for not installing inspection holes. You can refer to the "Capacity Regulations". In addition, the design temperature is generally -44 degrees, so you can use 16MNDR. There is no need to use stainless steel, which is too expensive.
The choice of single-layer structure or jacket structure is mainly based on comprehensive technical and economic considerations. For cryogenic liquid storage tanks, the key issue is to ensure good insulation during use, otherwise the pressure will rise sharply due to external heat input, affecting equipment safety. It adopts a single-layer structure, which requires extremely high insulation layer consumption, thermal insulation effect, and stability during use. Relatively speaking, the use of pearlescent sand vacuum insulation can effectively achieve good technical and economic efficiency. Therefore, the latter is generally used for liquid carbon dioxide storage tanks.