The difference between activated alumina and molecular sieve is shown the application. Activated alumina and molecular sieve are used for adsorb water as adsorbents. Activated alumina and molecular sieve have a strong adsorption capacity for water vapor. Activated alumina (alumina adsorbent) is also integrated with a lot of good physical and chemical properties such as high strength, not powder, so in most cases is the first choice for adsorption dryer. In particular, in the absence of thermal regeneration, activated alumina (alumina adsorbent) is almost inevitable to obtain compressed air in -40℃ dew point.
However, the adsorption capacity of activated alumina (alumina adsorbent) is much less than molecular sieve in the low-water environment, so if you want to get highly dry compressed air (pressure dew point below -60 ℃) , the molecular sieve is very useful. But the mechanical strength and anti-water droplets performance of molecular sieve is not ideal, it is often combined with a certain percentage of alumina used to obtain the best results.
Now there are many companies in the market recycle waste alumina, then they  calcine them in high temperature or sell them with good products with low price to disrupt the market. Recycling activated alumina (alumina adsorbent) is low price. The product appearance is also white, which is difficult to distinct good and bad, but after the use of six months , bad activated alumina will be powdered, and plug the device and result losses. So customers choose products must be careful, to choose good companies.
How to choose the right desiccant, the customer needs according to their specific equipment, such as gas pressure, the amount of processing to choose the right product.Zibo Xiangrun Environment Engineering Co.,Ltd and Shandong Bairui Chemical Technology Co.,Ltd provide you with  the highest quality products. Welcome to trial cooperation!