Do any experts here have sectional drawings of nitrogen adsorption tower equipment? Thank you!
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I’ve just started learning about *equipment knowledge, and I lack information on the internal structure of such equipment; I hope some experts can share their knowledge! The equipment is a Tianli 500 cubic meter 99.9% nitrogen adsorption tower.
Is the adsorption tower used for separating mixed gases or for adsorbing trace elements? It would be good to clearly explain the general principle of its operation. For reference.
It is an industrial pressure swing adsorption nitrogen generator (used to separate nitrogen from air)
This device uses the adsorption effect of molecular sieves to purify nitrogen. Its internal structure is quite simple: it consists of two perforated plates, one at the top and one at the bottom. A mesh is fixed to these plates to prevent the molecular sieves from leaking out; usually, there are two layers of such mesh – the lower layer serves as a framework, while the upper layer acts as a leakage barrier, with the number of layers determined by the pore size.
There are no cross-sections, so it’s not known what the exact internal pore size and mesh count are? The top should not be a orifice plate; there is a compression device at the top. Do the exhaust and pressure equalization pipes extend deep inside? Are there any branch pipes, and what is the mesh size of the filter screens on those pipes?
The pore size of the mesh should be determined based on the size of the molecular sieve; as a general rule, the molecular sieve’s pore size should be 1.5 times that of the mesh. The optimal size for the holes is 2.5 to 4 times the cross-sectional area of the air inlet hole.