Molecular-sieve dehydration

Continuous water removal through alternating adsorption and regeneration. A finishing stage for anhydrous ethanol production.

CNE project photography

01 / CNE

How the system works

Conditioned ethanol vapor enters a molecular-sieve bed, where water is selectively adsorbed. A second bed regenerates under controlled conditions; automatic valve sequencing alternates the duties. Dehydrated vapor is condensed and cooled. Regeneration streams are integrated with the alcohol recovery system to reduce product losses.

02 / CNE

Integrate the feed, regeneration and controls

Sizing depends on feed concentration, vapor condition, product water limit, cycle strategy and recovery integration. Liquid carryover and unsuitable contaminants must be controlled to protect the adsorbent. Instrumentation and interlocks coordinate pressure, temperature, switching and off-spec diversion. Final materials, hazardous-area requirements and relief design are defined during engineering.

Explore the engineering behind the project

Jingmen Yuanhan · Ethanol dehydrationMolecular-sieve dehydration within an electrolyte-precursor ethanol project.Yulin Kaiyue · Molecular-sieve systemA dehydration-system supply reference within a methanol-to-ethanol project.Xintianlong · Distillation & dehydrationA long-running reference relationship covering alcohol production, dehydration and improvements to upstream and co-product sections.

CNE / Discuss your project

Your next plant starts with the right conversation.

Share your feedstock, target product and capacity. Let’s shape a practical process concept.