“Experts in nitrogen generators, pay attention!

It is best to contact the molecular sieve manufacturers for this parameter; simply compare quotes from several different suppliers. There is a theoretical value for the molecular sieve efficiency, and the gas loss during the regeneration process of the molecular sieve also needs to be taken into account to obtain the actual value. This is something the manufacturer must promise. For reference.

1. I have available the performance data for carbon molecular sieves used for nitrogen production by a certain brand; these are the values promised by the manufacturer for reference: N2 purity (%), N2 production capacity (Nm3/Hr.t), and air-to-N2 ratio. The values are as follows: 98.0% with a production capacity of >450 Nm3/Hr.t and an air-to-N2 ratio of 2.01; 99.0% with a production capacity of >355 Nm3/Hr.t and an air-to-N2 ratio of 2.23; 99.5% with a production capacity of >290 Nm3/Hr.t and an air-to-N2 ratio of 2.42; 99.9% with a production capacity of >190 Nm3/Hr.t and an air-to-N2 ratio of 2.93; 99.99% with a production capacity of >110 Nm3/Hr.t and an air-to-N2 ratio of 3.99. The actual performance levels achieved depend on the PSA process and the operating pressure, and the compressed air used for regeneration, as mentioned above, is also an important factor to consider

From the manufacturer? Is it convenient to reveal?

I can come up with a plan for you regarding the size of nitrogen generator needed

1. This is information provided when communicating with nitrogen generator manufacturers; whether this information is shared or not poses no inconvenience for us, as the main goal is to avoid any appearance of advertising. 2. The following information comes from records obtained during discussions with a supplier of nitrogen generation equipment: 2.1. The adsorbent in question is Takeda’s 3KT-172 type molecular sieve, which is said to be the key material used in pressure swing adsorption processes. 2.2. In this industry, the choice of adsorbents involves a high degree of complexity; customers are unable to determine whether the adsorbent products they use are genuine or not, with each claiming that their product is authentic. 2.3. Since there is a certain surplus of fresh adsorbent available, the nitrogen generation equipment delivered will definitely meet the requirements. As for the actual time at which the adsorbent loses its effectiveness, it remains unclear to customers. 3. Notes: 3.1. We are ordinary customers who have no knowledge of the market conditions regarding adsorbents. We visited several manufacturing plants, and several of them mentioned using Takeda’s adsorbents; it is assumed that this brand may offer satisfactory performance, or at least it is not poor. However, the name seems to evoke painful historical events, so it is not mentioned; yet the performance metrics can serve as a reference for us lay users. 3.2. To prevent performance deviations when the adsorbent is replaced later on, we increase the volume of the adsorption tank, using a greater amount of filler to compensate for any possible variations in nitrogen production performance.

Indeed, the actual failure time of the adsorbent is a confusing matter for users.

Is it really that mysterious? Molecular sieve for nitrogen generators? It’s clear that your nitrogen-to-air ratio is still not as good as that of domestic brands. :)

It’s not a case of mismanagement; the main issue is whether the purification system has done its best in treating the water and oil. If water gets into the molecular sieve, its lifespan will definitely be short.

1. We are users, not experts. 2. The parameters mentioned above come from experts; we learned about them during research and were asked to keep them confidential. 3. We have not used that brand, so we do not know what the nitrogen-to-empty ratio is. 4. We really hope that experts can provide some information to help users understand this industry better

Got it. There are too many experts :) You can message me privately! Tell you the “insider info””