First, food requirements for nitrogen

1. The food industry has low requirements for nitrogen, many of which can be met with more than 98% purity, and the pharmaceutical industry usually requires 99.99% purity of nitrogen.

Second, the factors affecting the cost of nitrogen machine

1. A one-time investment in the entire system;

2. Service life of molecular sieve;

3. The life and cost of the parts required during use;

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

3. Factors affecting the stability of nitrogen making machine

Nitrogen making machine is a high-tech product involving 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, control valve: for pressure swing adsorption nitrogen machine, the valve must have the following properties:

a. Good material performance, 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 enough service life;

2. Root cause of valve failure

Under normal conditions of use, each programmed valve in each cycle (about 120 seconds) must be switched on and off once, according to the nitrogen machine 300 working days a year, 24 hours a day continuous movement, adsorption and desorption cycle of 4 minutes, then each valve needs to open and close more than 200,000 times a year. The failure of just one valve will affect the normal operation of the entire equipment. Therefore, the continuous service life of the valve is the most important part of the stability and reliability of the nitrogen machine.

Fourth, carbon molecular sieve performance indicators

a. Hardness

b. Nitrogen production (Nm3/T-h)

c. Recovery rate (N2/Air) %

d. Packing density

The above indicators carbon molecular sieve manufacturers have been indicated at the factory, but can only be used as reference data, how to make the carbon molecular sieve play the maximum efficiency, which has a direct relationship with the process flow of each nitrogen manufacturer and the adsorption tower height to diameter ratio, while ensuring the service life of the molecular sieve is very particular.

Five, food nitrogen machine brand

At present, there are many kinds of brands in the market, Dongguan Troy, GasPure, Chape 'er, etc., this should be selected according to our needs, and the price is slightly higher with good quality.