At present, most domestic tire companies that use nitrogen vulcanization use PSA (Pressure Swing Adsorption) nitrogen generators. The main features of nitrogen generators produced by this technology are simple control, fast speed from startup to nitrogen output, and continuous nitrogen supply using dual towers, which are more suitable for industrial applications such as tire production. Generally, tire manufacturers have strict requirements on the purity and pressure of nitrogen because it seriously affects the vulcanization quality of tires.
In the entire PSA nitrogen production process, there are three key factors that affect the purity and output of nitrogen:
1. The quality of molecular sieves
2. Valve operating status and switching speed
3. Nitrogen generator filling technology and compaction technology
NEWTEK has carried out a comprehensive technical upgrade of the PSA nitrogen generator around the above three key elements, which has increased the nitrogen output and improved the nitrogen quality, and achieved good results.
PSA is a gas separation technology that developed rapidly abroad in the late 1960s and early 1970s, and China began to introduce it in the late 1980s. The principle is to separate the gas mixture by using the difference in the "adsorption" performance of molecular sieves for different gas molecules under the same pressure. It uses air as raw material and uses a high-efficiency and highly selective solid adsorbent (molecular sieve) to selectively adsorb nitrogen and oxygen, separate nitrogen and oxygen in the air, and use double towers to produce nitrogen in turn to ensure continuous nitrogen supply.
NEWTEK uses a 700Nm3/h double-tower PSA nitrogen generator, and old customers have basically used it continuously for about 10 years. The main component of molecular sieve is carbon. After long-term adsorption and emission, the oil and impurities in the air will block the pore size, and its adsorption capacity will continue to decline over time. The life of the general molecular sieve is 8 to 10 years. The quality of the molecular sieve is an important factor affecting the nitrogen production capacity. The second is the switching speed and sealing effect of the valve, which directly affects the purity of the nitrogen. The switching speed and sealing of the valve selected by NEWTEK have reached a world-class high level, which can fully meet the needs of the nitrogen generator. In order to solve the common problems that cause molecular sieve contamination and pulverization, which ultimately lead to a significant decrease in the adsorption capacity of the molecular sieve and even the collapse of the nitrogen production system, NEWTEK comprehensively optimizes the molecular sieve filling and compression structure of the nitrogen generator to increase the production capacity of the nitrogen generator and improve the efficiency of the equipment..
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