Why can’t the gas flow in and out continuously in the pressure swing adsorption nitrogen production process?
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I recently noticed that in several factories using pressure swing adsorption nitrogen generation units, the 10 doors are switched back and forth at an average rate of once per minute. Moreover, when switching adsorption tanks, the tank that was previously performing normal adsorption is always sealed first before the newly regenerated tank is opened. I think I can open all the valves for air intake and air exhaust on the regeneration tank. Ensure continuous going out. I asked the manufacturer, and they said that the oxygen flow needs to go in the opposite direction; wouldn’t it be good to add a one-way valve to the design? Could someone who understands the principles and process explain it to me?
Nitrogen undergoes adsorption and desorption processes; how can desorption occur with continuous inflow and outflow?
When you consider a single adsorption tank in operation, isn’t it continuous? All that’s needed is to ensure proper switching between tank A and tank B during control, so that continuous production can be maintained. The tank that has been switched off is regenerated, while another tank is used for production and adsorption. Do the nitrogen generators there also have all their valves closed at times?
As for the entire system, continuous operation is possible; when adsorption by A reaches saturation, it switches to desorption mode, and once desorption by B is complete, it switches back to adsorption mode. There is no need to close all valves – it’s just that the sealing performance of the check valves isn’t particularly good, so there is indeed a possibility of air leakage
This is because the operation of pressure swing adsorption can only be intermittent, but with more pressure swing adsorption units, there is basically no risk of gas supply interruption during operation. Of course, if your factory or workshop has only one set of PSA units, that’s another matter.
Two groups, switching back and forth. I’m thinking of keeping the adsorption continuous, but having regeneration occur one by one.
By switching between AB, air can be supplied in turn, resulting in relatively stable pressure; this technology has been widely used in industry for many years
What you have here is a process of temperature-dependent adsorption; it has nothing to do with the principles of pressure-dependent adsorption! How can the basic pressure-changing steps in the pressure swing adsorption process—such as pressure increase, adsorption, desorption in the forward direction, desorption in the reverse direction, and flushing—based on the principle of \"pressure swing\" be implemented when operating continuously? :lol:lol:lol