How to determine the heating time and cold blowing time for the initial regeneration of molecular sieves
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As the title says. How are the heating time and cold blowing time determined during the initial regeneration of molecular sieves? During the initial regeneration, the adsorption capacity of the molecular sieve is actually quite limited; if it operates at or below the minimum load, the switching time will be very long. This results in an increased time for initial activation (it is generally required that 3 cycles be completed for initial regeneration), and it also wastes electricity consumed by the compressor. So, everyone, how do you decide on this time? Is there any good way?
I’m not sure what kind of process your system is suitable for. In my opinion, you’re thinking about too many things. You just need to focus on one thing, namely whether the regenerated molecular sieve meets the usage standards. The specific number of cycles does not indicate whether the acceptable standard has been met. It’s all about data to speak the truth. If the requirements are not met, it may continue to grow; so why use several cycles to make a judgment if the requirements have been met? Most molecular sieves are already activated upon leaving the factory and are packaged in a sealed manner. That is, some substances get absorbed during filling on-site; just clarify that part and it’s done. For reference.
Hello, thank you very much for your reply. My unit is an air separation plant. The principle is indeed that, but in the end it all comes down to the operational level; at the operational stage, I can carry out operations with the lowest possible load.
In an air separation unit, the adsorption mode typically lasts for 12 hours, the heating mode for 8 hours, the cooling mode for 4 hours, and the standby mode for 2 hours.
I assume you work with air separation equipment; it’s not necessary – generally, one cycle is enough to meet the required standards. Furthermore, the adsorption capacity of modern molecular sieves is also constantly improving; specifically, it is necessary to follow the standards applicable to the type being used.
Actually, the point of my question is: what should be the heating time for the first regeneration? Ha, it doesn’t need to be regenerated several times
It is not advisable to disrupt the procedure; it must operate according to the pre-designed schedule (the switching procedure provided by the equipment manufacturer).
Does the manufacturer have a dedicated program for recycled design? Linde are all programs developed by itself
:This company is a global leader in this field. Ahhh, let’s stop arguing; just go with your instincts. There’s no need to worry about what’s the best choice. For such a mature company, just follow along – there’s no need to keep struggling over it. A waste of time.
Actually, it depends on the recommendations of the molecular sieve manufacturer... If you don’t follow those recommendations, you might encounter problems during subsequent use; they will say that you didn’t follow their SOPs... The consequences will be up to you. For the first drying process after the molecular sieves are installed, the system is usually still in operation, so there’s no need to worry about saving a little energy at the cost of causing more problems later. PS. From my personal experience, heating once is sufficient... It takes around 8–12 hours. Nitrogen is used as the carrier, and steam is used to heat the nitrogen in order to dry the molecular sieves.