why activated alumina and molecular sieve adsorbent broken and be dust in the dryer:
A:
1. The adsorbent contact water, the compressive strength is reduced； 
2. The filling of adsorbent is not tight, leads to the friction of molecular sieve and activated alumina；
3. The pressure equalizing system is not or blocked, and the pressure is too large；
4. The compressive strength of the product is affected by the use of stirling bar for filling；
5. The product itself has quality problems and its strength is unqualified。