Analysis of various factors affecting nitrogen making machine

1. Factors affecting the stability of nitrogen machine

The nitrogen making machine is a high-tech product integrating machine, electricity and instrument, and the stability of the equipment is especially important in long-term use. It is not difficult to see from the composition of the nitrogen machine that the stability is affected by the following two points: 1, the control valve: for the pressure swing adsorption nitrogen machine, the valve is necessary to have the following functions: Good raw material function, absolutely no air leakage; b. Complete the on or off action within 0.02 seconds of receiving the control signal; c. Can withstand frequent opening and closing to ensure long service life; 1.1, the normal use of the valve fault source, each programmed valve in each cycle (120 seconds or so) is necessary to switch once, according to the nitrogen machine 300 working days a year, 24 hours a day continuous movement, adsorption and desorption cycle for 4 minutes, then each valve needs to open and close more than 200,000 times a year. And only one valve fault will affect the whole equipment normal. Therefore, the continuous service life of the valve is the most important part of the stability and reliability of the nitrogen machine.

2. Functional objectives of carbon molecular sieve

a. hardness b. Nitrogen yield (Nm3/T-h) c. recovery rate (N2/Air)% d. Filling density above the target carbon molecular sieve manufacturers have been indicated at the factory, but can only be used as reference data, how to make the maximum performance of carbon molecular sieve, which is directly related to the process flow of each nitrogen manufacturer and the ratio of height to diameter of the adsorption tower, together to ensure the service life of the molecular sieve is very careful

3. The effect of oil and water in the air on molecular sieve

Because the air contains water and oil vapor, after passing through the compressor, if it is not subjected to severe air purification treatment, the oil vapor is simply adsorbed by the carbon molecular sieve, and it is difficult to desorption, and the molecular sieve pore size is stuffed, resulting in the molecular sieve "poisoning" failure. Therefore, setting up strict air purification equipment before compressed air enters the adsorption tower is an indispensable part of ensuring the service life of molecular sieve. Although water is not fatal to molecular sieve, it will make molecular sieve adsorption "load" added, that is, affect its ability to adsorb O2 and CO2, so compressed air drying water removal is a question that can not be ignored to improve molecular sieve adsorption ability and stability.