Ethanol dehydration typically occurs in a PSA unit.  Water is adsorbed into the molecular sieve from the ethanol-water feed.

1. BOAO 3A molecular sieve Synonym: 3A EDG; Z3-03; Siliporite® EPX 3B and Siliporite® EHP; SYLOBEAD® molecular sieves.

2. Typical Chemical Formula: 0.4K2O.0.6Na2O.Al2O3.2.OSiO2.4,5H2O

3. CAS NO.: 1318-02-1

Dehydration of ethanol in azeotropic conditions (93-96 % v/v) using the Pressure Swing Adsorption (PSA) process with molecular sieves columns offers significant economic and environmental advantages.

BOAO 3A Molecular sieve used to dehydrate ethanol should have the following characteristics:

• Mechanical integrity to withstand demands of pressure swings with minimal breakage or dust generation

• Adsorption effciency and selectivity to allow for rapid removal of water with minimal ethanol co-adsorption.

Solutions

The application of our molecular sieve to get waterfree ethanol

Molecular sieve ethanol dehydration, the lower its water content, the higher quality of alcohol is produced. However, using typical multi-pressure distillation processes alone, the ethanol to water azeotopic ratio is at 95.5%, with a maximum of 97.2%. Further purification is needed to exceed the limits for a more refined final product.

Ethanol Dehydration Grade Molecular Sieve BAED is specially designed for ethanol dehydration by PSA or VSA unit. To create a highly refined ethanol product, the Pressure Swing Adsorption (PSA) method is combined with the standard multi-pressure distillation process, In this process, water molecules are drawn out and absorbed by the pores of the molecular sieves, allowing only the ethanol to pass through. The process results in a final ethanol product that has purification of 99.8%.

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