SMT special nitrogen machine

Carbon molecular sieve is the adsorbent of PSA nitrogen making machine, using the difference in the adsorption amount of oxygen and nitrogen molecules in the compressed air in the carbon molecular sieve, through pressurized adsorption gas production, the principle of atmospheric desorption regeneration directly from the compressed air to produce nitrogen gas separation equipment.

Principle of nitrogen making machine
Carbon molecular sieve is the adsorbent of PSA nitrogen making machine, using the difference in the adsorption amount of oxygen and nitrogen molecules in the compressed air in the carbon molecular sieve, through the principle of pressure adsorption gas production, atmospheric pressure desorption regeneration directly from the compressed air to produce nitrogen gas separation equipment.
The difference in adsorption capacity of oxygen and nitrogen molecules in the compressed air is mainly due to the different diffusion rates of these two gases on the surface of the carbon molecular sieve. The diffusion rate of gas molecules with smaller diameter (O2) is faster, while that of gas molecules with larger diameter (N2) is slower. At the same time, under different adsorption pressures, the higher the adsorption pressure, the larger the adsorption capacity. Therefore, the use of carbon molecular sieve to oxygen and nitrogen in a certain period of time, under different pressures of the difference in the adsorption capacity of this characteristic, by the automatic control system program according to specific programmable pressure adsorption gas production, atmospheric pressure desorption regeneration cycle process, complete the separation of nitrogen and oxygen, to obtain the required different purity of nitrogen.
The difference curve of the adsorption amount of carbon molecular sieve for oxygen and nitrogen under different adsorption time and adsorption pressure: When the air pressure rises, carbon molecular sieve will absorb a large amount of oxygen, carbon dioxide and water. When the pressure is reduced to normal pressure, the adsorption of oxygen, carbon dioxide and water by carbon molecular sieve is small
Molecular sieve nitrogen maker (PSA pressure change adsorption nitrogen maker) usually uses a double adsorption tower process structure, through the intake, adsorption, gas production, pressure balancing, desorption, regeneration of six basic steps to complete the separation of nitrogen and oxygen, to obtain the required different purity of nitrogen.
The dynamic adsorption capacity, separation coefficient, oil resistance, water resistance, wear resistance and other parameters of carbon molecular sieve (CMS) determine the performance and service life of carbon molecular sieve.

peculiarity
The molecular sieve nitrogen machine can produce nitrogen with a purity as low as 95% (non-oxygen content), but it is more common to produce nitrogen with a purity of 99% to 99.999% to meet the needs of different purity nitrogen at the user site.
Stable operation, fast output of qualified nitrogen, the shortest output of qualified nitrogen in 10 to 20 minutes, secondary start-up nitrogen purity does not decrease, on demand;
Energy-saving nitrogen machine frequency conversion nitrogen purity control technology, to meet different industry users, the user terminal with how much nitrogen, equipment to produce how much nitrogen, how much compressed air consumption, supporting the use of frequency conversion air compressor, to achieve energy saving effect, reduce operating electricity costs;
The air compressor gas supply system, purification and drying system and nitrogen machine system are respectively pried and prefabricated, which is simple and quick for users to install on site.
The small nitrogen machine is a simple pressure vessel, which is convenient for users to install, use and manage directly.
Optional DCS multi-function monitoring system and remote wireless monitoring system, can realize the equipment local monitoring and remote monitoring, data storage and query, the system operating conditions are all in control;
7*24 hours comprehensive and professional service, regular telephone or on-site visit users, remind users of various things to pay attention to, urge users to timely maintenance and maintenance;
Can be customized to meet SMT industry, semiconductors, chips, pressure vessels and other special models.
Effective guarantee of stable operation
1. The outlet of the air compressor is equipped with an air-water separator, which can remove more than 95% of the liquid water and oil mixture, reducing the load of the cold and dry machine and filter.
2. The cold dryer adopts high temperature type, the design intake temperature is less than 80℃, to ensure that the system is clean.
3. There are buffer tanks before and after the cold dryer and filter: air buffer tank, air process tank; Stabilizes the air flow rate of the nitrogen machine when the pressure is equalized, and effectively improves the purification effect of the cold and dry machine and filter.
4. Configure three-stage filter, minimum oil content of 0.001ppm purification accuracy, configure activated carbon oil removal, prevent oil mist into the nitrogen machine, non-activated carbon simple filter.
5. The bottom of the air buffer tank and filter is equipped with automatic and manual drainage devices to facilitate drainage.
6. Reasonable diameter to height ratio of adsorption tower, large volume of nitrogen process tank to meet system requirements.
7. Nitrogen adsorption tower in and out of the air top blowing, diffusion technology, reduce the compressed air damage to the molecular sieve.
8. Nitrogen machine filling compaction technology, molecular sieve loading density is high, molecular sieve does not spray screen, does not powder.
9. Solenoid valve and pneumatic valve are equipped with filter, pressure regulator and pressure damper before driving gas to ensure longer and more stable operation of nitrogen production function;
10. Nitrogen purity is not qualified nitrogen is automatically drained and alarm, nitrogen purity is qualified gas supply.
11. The nitrogen machine process can be adjusted according to the nitrogen production load and nitrogen amount, so as to achieve energy saving and consumption reduction.

System composition
It can be divided into air compressor, purification device, nitrogen production device, nitrogen storage and other parts.
Including: screw air compressor, W-class gas and water separation filter, air buffer tank, 7-level filter, cold and dry machine, 5-level filter, 3-level filter, activated carbon degreaser, air process tank, molecular sieve nitrogen machine (PSA nitrogen machine), nitrogen detection device, nitrogen process tank, nitrogen storage tank and other basic unit modules.

Efficient Technology Co.,Ltd provide a full SMT assembly line solutions, including SMT Production Line, SMT Pick and place machine, SMT Stencil Printer, SMT Inspection equipment, SMT Weling equipment, SMT Intelligent Storage System, SMT Automatic Insertion Machine, SMT Peripheral Equipment, SMT Feeders, SMT Nozzles, SMT Spare Parts etc any kind SMT machines you may need, please contact us for more information: WeChat: +8613714564591  Email: sales@efsmt.com

FAQ: