Advanced Dehydration Process for Organic Compounds (Vapor-phase PSA System)

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The process shown schematically in the figure is an advanced dehydration process for purifying organic compounds, designed to achieve high-performance dehydration through cyclic operations of adsorption at nearly atmospheric pressure and desorption at reduced pressure using two or more adsorbers.
This process has realized flexibility in operating conditions and savings in utility consumption.

Features

Needs no third component like an entrainer, nor a high-temperature heat source, as required for other dehydration processes like azeotropic distillation or temperature swing adsorption.
Easy operation (shutdown and re-startup)
Advanced dehydration (H₂O content less than 100 ppm).

Applications

Dehydration of organic compounds that form azeotropes with water, in particular
Ethanol, isopropyl alcohol, tetrahydrofuran (THF), etc.

Experience

Dehydration of ethanol : 1 unit
Dehydration of isopropyl alcohol : 2 units
Dehydration of THF : 3 units

Jointly developed with JAPAN SYNTHETIC ALCOHOL CO., LTD


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