Molecular sieve drying is the most regularly used method for gas drying. Here we will mainly discuss the difference between distillation& molecular sieves drying.
- Advantages and disadvantages of distillation drying
Distillation technology removes moisture and other volatile impurities through steps such as heating, evaporation, condensation, and collection.
Suitable for drying large amounts of ethanol.
However, it consumes a large amount of heat energy, and if the ethanol humidity is high and the dust content is high, the expected drying effect cannot achieve.
- Advantages and disadvantages of molecular sieves drying
Molecular sieve drying utilizes Zhongci molecular sieves to adsorb impurities such as water in ethanol, achieving the purpose of drying.
Good drying performance, low energy consumption, reusable, adjustable according to different ethanol and processing volumes.
However, it needs to be replaced every 5-8 years.
Zhongci Molecular Sieves
Molecular sieve is a microporous crystal of aluminosilicate, which has the characteristics of uniform pore size, high specific surface area, good thermal stability, strong adsorption performance, large internal surface area, and high strength. Due to their different uses, molecular sieves divid into 3A, 4A, 5A, 13X, 13X APG, 13X HP, CaX, Li-X, carbon molecular sieves, etc.
Advantage: Adsorption is according to the size and shape of the molecules, that is, only those molecules smaller than the pore size of the molecular sieve are adsorb. For small polar molecules and unsaturated molecules, it has selective adsorption properties. The greater the polarity and the higher the degree of unsaturation, the stronger the selective adsorption and strong water absorption. Even in the case of higher temperature, larger space velocity and lower water content, there is still a relatively high water absorption capacity.
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