Praxair Technology, Inc.

Praxiar Technology, Inc.

Cheryl Ann Ford

Benjamin Bikson

Salvatore Giglia

Joyce K Nelson

James Timothy Macheras

Patrick Samuel Nicolas, Jr

Patrick Samuel Nicholas, Jr

Multicomponent hollow fiber membrane tubesheets are disclosed that provide for improved membrane performance, particularly at high operating pressures. The multicomponent tubesheets have an epoxy resin having, when cured, different degrees of hardness in different portions of the tubesheet. Methods for producing such multicomponent tubesheets are also provided.

Hollow fiber membrane tubesheets of variable epoxy composition and hardness

The invention involves annular hollow fiber membrane bundle comprising a plurality of helically wound layers of semi-permeable hollow fibers helically wound thereon and at least one reinforcement filament which has been helically wound concurrently with said hollow fibers into the hollow fiber membrane bundle. A preferred embodiment provides that the reinforcement filament is uniformly distributed throughout the diameter of the bundle and/or across the axial length of the bundle. Though, other embodiments provide a non-uniform distribution throughout the diameter of the bundle and/or across the axial length of the bundle.

Process of making a structure enhancing hollow fiber module

Structure enhancing hollow fiber module

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Wareham, MA, United States of America

Cheryl Ann Ford