13X molecular sieve offers multiple benefits in air separation, mainly reflected in the following aspects:
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Appropriate Pore Size and High Selectivity
- The pore size of 13X molecular sieve is about 10 Å. This specific pore size enables it to effectively separate gases with different molecular sizes in the air. It can allow molecules with a diameter smaller than 10 Å to enter its pores while blocking larger molecules. In air separation, it has a good adsorption effect on small gas molecules such as nitrogen, carbon dioxide, and water, but relatively weak adsorption on oxygen, thus achieving efficient separation of oxygen from other gases and obtaining a high-purity oxygen product.
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High Adsorption Capacity
- 13X molecular sieve has a large specific surface area and abundant microporous structure, endowing it with a high adsorption capacity. During the air separation process, it can adsorb a large amount of impurity gases such as nitrogen. Compared with some other adsorbents, it can adsorb more gas molecules per unit volume or unit mass, thus improving the efficiency and output of air separation, reducing the volume and operating cost of equipment.
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Good Thermal and Chemical Stability
- 13X molecular sieve can maintain a stable structure and performance within a wide temperature range. Generally, it can withstand temperatures of several hundred degrees without significant structural damage. This allows it to function normally under various operating conditions of air separation, such as during the heating regeneration stage of temperature swing adsorption. It will not lose its adsorption capacity due to temperature changes. At the same time, it also has good chemical stability, is not easily corroded by gases such as oxygen and carbon dioxide in the air or react with other substances, has a long service life, and can maintain a good separation effect during long-term operation, reducing maintenance and replacement costs.
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Fast Adsorption Kinetics
- 13X molecular sieve has a fast adsorption speed for gases and can reach adsorption equilibrium within a short time, which helps to improve the processing capacity and operating efficiency of air separation equipment. In actual air separation devices, it can achieve a fast adsorption and desorption cycle, enabling the equipment to complete a working cycle in a short time, thus increasing the amount of air processed per unit time and improving production efficiency.
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Regenerability
- After saturation, 13X molecular sieve can be regenerated by methods such as pressure swing adsorption (PSA) or temperature swing adsorption (TSA) to restore its adsorption capacity and be reused. This regenerability not only reduces the cost of air separation but also reduces the environmental impact, meeting the requirements of sustainable development. By simply changing the pressure or temperature, the adsorbed gases can be desorbed, and the molecular sieve can return to its initial high-adsorption performance state, realizing effective resource utilization and cyclic operation.
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Strong Resistance to Impurities
- 13X molecular sieve has a certain tolerance for some common impurities in the air, such as sulfides and hydrocarbons. It can resist the influence of these impurities on its adsorption performance to a certain extent. Even in air containing a small amount of impurities, it can still maintain a good separation effect, and will not rapidly reduce its adsorption capacity or lose its separation function due to the presence of impurities, improving the stability and reliability of the air separation system and reducing the risk of equipment failure and product quality degradation caused by impurity influence.
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