Molecular sieves real 3A beads, designed to dry ethanol down to the ppm level for years in high purity applications in food, beverage and ...
Molecular sieves real 3A beads with superior physical properties, designed to dry high volumes of ethanol down to the ppm level for years.
Ethanol drying for biofuels and food applications
Ethyl alcohol, produced either by fermentation or synthesis, needs to be dehydrated to very low water levels for some of its various end-uses. Applications for anhydrous ethanol include bio-fuels (direct blending and ETBE production), and industrial chemical, but also food and pharmaceutical ingredients.
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, compared to traditional ternary distillation processes, and is today the preferred technology.
Thanks to various process improvements developed by engineering and construction companies, the energy yield (related to vapour consumption) is improving steadily. Arkema has been able to offer a specific Siliporite® 3A type Molecular Sieve for this application.
- High mechanical strength and attrition resistance
- Outstanding adsorption kinetics
- Negligible ethanol co-adsorption
- Minimized by-product formation.