Problems with pressure swing adsorption cold dryers
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I just started working in this field after graduating, but the company sent me on a business trip right away. Another colleague who knew a bit about this and was traveling with me has to leave now, so I’m left alone. Although I’m trying to learn more about this topic urgently, I’m facing some issues on site, so I’m posting a question in hopes of getting some guidance. Question: In a pressure swing adsorption nitrogen generation system equipped with a refrigerated dryer (with a YD-3 intelligent microcomputer controller), the inlet air temperature is shown as 32 degrees Celsius, the dew point has risen to 8 degrees Celsius, and the condensation pressure is 2.3 MPa (they previously said it should be 1.5 MPa). What could be causing this? Is it a problem with the circulating condensate water? Is it useful to clean the electronic drain valve and the filter before the valve? One more question: the drainage timing for the cold dryer comes in 5s, 10s, and 15s options. What are the differences resulting from choosing different timing settings? This is my first time engaging in this, so please give me some guidance. Thank you! This post was last edited by lim927 on 2009-4-29 22:34]
5s, 10s, and 15s are the setting times for the automatic on/off operation of the electronic drain. If the humidity in the air is high, more water will be produced through freezing and compression; in such cases, it is better to set a shorter time for the automatic activation of the drain. It’s fine to do it once every 10 seconds or so. It is best to consult the cryogenic dryer manufacturer for specific procedures.
The condensing pressure of 2.3 MPa is too high; it is recommended to call the manufacturer of the refrigerated dryer for advice! ! !
The cold dryer is equipped with display alarms; high refrigerant pressure indicates that the temperature of the incoming air is too high. If the cold dryer is water-cooled, it is necessary to check whether there are any issues with the circulating water. There is a setting for the timing of water drainage – one parameter determines how much time is allowed for each drainage session, while another specifies how often drainage should take place. This depends on the specific conditions at the site, as well as the air humidity