Membrane Technology and Research, Inc

United States Environmental Protection Agency

U.S. Environmental Protection Agency

Tiem Aldajani

Yu Huang

Richard W Baker

Jennifer Ly

Nicholas Patrick Wynn

Donald A Fulton

Ramin Daniels

Leland Morris Vane

Franklin R Alvarez

Jennifer H Ly

Nicholas P Wynn

Leland M Vane

Processes for removing water from organic compounds, especially polar compounds such as alcohols. The processes include a membrane-based dehydration step, using a membrane that has a dioxole-based polymer selective layer or the like and a hydrophilic selective layer, and can operate even when the stream to be treated has a high water content, such as 10 wt % or more. The processes are particularly useful for dehydrating ethanol.

Dehydration processes using membranes with hydrophobic coating

Processes for removing water from organic solvents, such as ethanol. The processes include distillation to form a rectified overhead vapor, compression of the rectified vapor, and treatment of the compressed vapor by two sequential membrane separation steps.

Membrane augmented distillation to separate solvents from water

The invention is a pervaporation process and pervaporation equipment, using a series of membrane modules, and including inter-module reheating of the feed solution under treatment. The inter-module heating is achieved within the tube or vessel in which the modules are housed, thereby avoiding the need to repeatedly extract the feed solution from the membrane module train.

Pervaporation assembly

Processes for dehydrating an organic/water solution by pervaporation or vapor separation using fluorinated membranes. The processes are particularly useful for treating mixtures containing light organic components, such as ethanol, isopropanol or acetic acid.

Liquid-phase and vapor-phase dehydration of organic/water solutions

Pervaporation process and assembly

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San Jose, CA, United States of America

Tiem Aldajani