PSA nitrogen generator is an advanced gas separation technology using carbon molecular sieve as adsorbent. It has an irreplaceable position in the field gas supply in the world, and is widely used in all walks of life.
In the existing hundreds of nitrogen making enterprises, how to choose a nitrogen generator with good performance is the first choice for many customers. The selection of a nitrogen generator involves many problems, but as long as we carefully analyze, compare and grasp the key points, we can get satisfactory results.
Let's introduce how to choose a good performance nitrogen generator.
First of all, before determining the specific model and specification (i.e. hourly nitrogen production, nitrogen purity, outlet pressure, dew point), we should make a comprehensive comparative analysis of the performance and characteristics of the nitrogen generator, and at the same time, we should make a correct choice according to our existing environmental conditions.
Firstly, the nitrogen generator is compared and analyzed from the following aspects
a. The rationality of the whole system design;
b. Carbon molecular sieve loading technology and compaction method;
c. Control valve service life;
d. R & D, manufacturing experience, customer performance;
Second, the factors that affect the cost of nitrogen generator are as follows
1. One time investment of the whole system;
2. Service life of molecular sieve;
3. Service life and cost of accessories required in the use process;
4. Operation and maintenance costs and consumption of electricity, water and compressed air;
Thirdly, the factors that affect the stability of nitrogen generator are as follows
Nitrogen generator is a high-tech product involving mechanical, electrical and instrument integration. The stability of the equipment is particularly important in long-term use. It is not difficult to see from the composition of the nitrogen generator that the stability is affected by the following two points:
1. Control valve:
For PSA nitrogen generator, the valve must have the following performance:
a. Good material performance, absolutely no air leakage;
b. The opening or closing action is completed within 0.02 seconds after receiving the control signal;
c. Able to withstand frequent opening and closing to ensure long service life;
2. Carbon molecular sieve is the core of PSA nitrogen generator
Performance index of carbon molecular sieve:
a. Hardness
b. Nitrogen production (Nm3 / T-H)
c. Recovery (N2 / air)%
d. Packing density
The above indicators have been indicated by the manufacturer of carbon molecular sieve at the time of delivery, but they can only be used as reference data. How to make the carbon molecular sieve give full play to its maximum efficiency is directly related to the process flow of each nitrogen plant and the height diameter ratio of adsorption tower.
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