What issues should be paid attention to when choosing a good Nitrogen Generators?

 PSA nitrogen generator is an advanced gas separation technology that uses carbon molecular sieve as adsorbent. It has an irreplaceable position in the field of gas supply in the world today. It is widely used in various industries. How should customers choose a PSA with good performance? Nitrogen generator is the first choice for many customers, and there are many problems involved in the selection of a Nitrogen Generator. First of all, before determining the specific model specifications (that is, nitrogen production per hour, nitrogen purity, outlet pressure, dew point), a comprehensive comparison and analysis of the performance and characteristics of the nitrogen generator should be emphasized. At the same time, it should be based on its own existing environmental conditions. Make the right choice.

First, compare and analyze PSA nitrogen gas generator from the following aspects:

a) The rationality of the whole system design;

b) Carbon molecular sieve filling technology and compaction method;

c) Control the service life of the valve;

d) Research and development, manufacturing experience, user performance;

Second, factors affecting the cost of nitrogen generator:

1) One-time investment in the entire system;

2) The service life of molecular sieve;

3) The life and cost of accessories required during use;

4) Operation and maintenance costs and consumption of electricity, water and compressed air;

Third, factors affecting the stability of PSA nitrogen generator: PSA nitrogen generator is a high-tech product involving machinery, electricity and instrumentation. The stability of the equipment is especially important in long-term use. It is not difficult to see from the composition of the nitrogen gas generator that the stability is affected by the following two points:

1. Control valve: For pressure swing adsorption nitrogen generator, the valve must have the following performance:

a) Good material performance, absolutely no air leakage;

b) Complete the opening or closing action within 0.02 seconds of receiving the control signal;

c) It can withstand frequent opening and closing to ensure a sufficiently long service life;

1.1. Under normal use of the root cause of valve failure, each program-controlled valve must be opened and closed every cycle (about 120 seconds), calculated according to 300 working days per year for the nitrogen generator, operating continuously for 24 hours a day, adsorption and desorption cycle For 4 minutes, each valve needs to be opened and closed more than 200,000 times per year. And as long as one of the valves fails, the entire equipment will be affected. Therefore, the continuous service life of the valve is the most important link for the stability and reliability of the nitrogen generator.

2. Carbon molecular sieve is the core of variable pressure attached nitrogen generator:

2.1. Performance indicators of carbon molecular sieve:

a. Hardness

b. Nitrogen production (Nm3/T-h)

c. Recovery rate (N2/Air)%

d. Packing density

The above indicators have been indicated by the carbon molecular sieve manufacturers at the factory, but they can only be used as reference data. How to maximize the effectiveness of carbon molecular sieve is directly related to the process flow of each nitrogen manufacturer and the height-to-diameter ratio of the adsorption tower. At the same time, it is very particular about ensuring the service life of molecular sieve.