When a molecular sieve is heated, why is the residence time particularly long when the outlet temperature reaches 30 degrees? ? ?

Send a picture so everyone can take a look； How long? What is it at the peak? :)

During the normal operating cycle of the molecular sieve, the regeneration curve should not remain constant for periods of time; if there is a straight-line segment, it may be due to: 1. Regeneration being paused at that moment, 2. The molecular sieve not being properly packed, or 3. Unstable regeneration gas temperature. My personal views are for reference only; please point out any errors

Could you explain it more clearly, or send a trend chart? With normal heating, the temperature rises gradually and remains stable; it only reaches a smooth linear trajectory once the desired temperature is attained. I’m a bit confused by what the original poster said

This post was last edited by DrunkSinging on 2011-11-28 at 11:42 :dizzy: It was posted by mistake – it wasn’t finished when it was sent

I would like to ask: when talking about heating, do you mean that the outlet temperature of the operating unit or the outlet temperature during regeneration reaches 30 degrees? Hmm~~~ If it’s the operating molecular sieve that reaches 30 degrees, that would be a problem, but I believe you don’t mean the operating molecular sieve. If it is a regenerated molecular sieve, the outlet temperature reaches 30 degrees and the material stays there for a long time; after heating here is completed, the outlet temperature is just a little over 20 degrees. I’m not sure whether the process stopped and couldn’t proceed when it switched from heating to cooling, or if it’s still in the heating phase. Also, what temperature should the outlet temperature reach after heating is completed in your system? Is it also possible that there is a problem with the electric heating itself, or that the molecular sieve has been impacted? Check the regenerative gas pipeline for leaks, as well as any changes in the volume of regenerative gas. Original poster, you didn’t clarify your question when posting it, and you don’t respond much either; since no one knows the situation on site, we can only guess.

Is it an electric heater? If the electric heater fails to reach a temperature of 30 degrees after a long time, check whether it is operating at full power Is the current at its maximum load level? If so, then it has nothing to do with the electric heater ； If not, there’s a problem with the electric heater!

Upstairs, in my opinion, even when the electric heater is not operating at full capacity, the temperature at the outlet of the molecular sieve used for heating will not remain at 30 degrees. The aluminum adhesive in the first layer of the molecular sieve releases a large amount of water molecules when the temperature drops to around 12 degrees; at that point, the change in temperature occurs more slowly, so it still won’t stay around 30 degrees

I work on power regulation cabinets, and indeed over the years I have rarely encountered situations where they remain at 30 degrees due to not operating at full capacity (usually they stay around 100 degrees or higher!) Since I am not familiar with air separation processes, my analysis can only focus on the power control cabinet; such an approach can at least help narrow down the range of possible faults!