PSA, seeking answers
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In PSA, I would like to ask whether the pressure in the adsorption tower depends on the adsorption and desorption requirements of the molecular sieve under pressure Or is the pressure related to the molecular sieve or to the downstream system?
The selection of the PSA adsorption pressure depends on the relationship between product yield and adsorption pressure; generally, this relationship takes on a parabolic shape that opens downward, meaning there is an optimal pressure range. For example, in hydrogen production, pressures of 14–25 bar are typically used. Of course, the pressure required for downstream use also needs to be taken into account – it’s best to operate within the optimal range. If that’s not possible, options such as reducing or increasing the pressure, or lowering the adsorption pressure (without considering yield) can be considered~~
The pressure in the adsorption tower follows, of course, the adsorption curve of the molecular sieve. I’m not quite sure whether by the pressure of the adsorption tower you mean its operating pressure or its design pressure
It should refer to the actual working pressure~~