How to use activated alumina and molecular sieve together
2024-07-12
The combination of activated alumina and molecular sieve is as follows: Generally, in situations where high drying requirements are required, activated alumina can be used for pre drying first, and then molecular sieve can be used to eliminate residual moisture. This can extend the service life of the molecular sieve and enhance its drying effect. Specifically, activated alumina has the best water absorption rate at relatively high moisture content, high strength, and is not easy to pulverize, while molecular sieve has the best adsorption rate at low relative humidity. Therefore, combining the two can leverage their respective advantages and achieve the best drying effect.
In addition, during the specific operation, the bottom of the dryer can be filled with activated alumina balls as a protective layer, and pre drying treatment can be carried out. Then, deep adsorption drying treatment can be carried out through the molecular sieve bed layer. The upper layer of the molecular sieve, also known as the tank body, will be filled with some activated alumina as a protective layer for the molecular sieve. This can not only protect the molecular sieve, avoid losses caused by powder removal, extend the service life of the molecular sieve, but also enhance the drying effect and eliminate residual moisture in the gas after adsorption and drying of activated alumina.
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