Process for the fabrication of a spirally wound membrane module

Details Process for the fabrication of a spirally wound membrane module Process for the fabrication of a spirally wound membrane module

B - Operations, Transporting

01

D

18/76

B01D 63/10 (2006.01)

Patent

CA 2034706

A B S T R A C T PROCESS FOR THE FABRICATION OF A SPIRALLY WOUND MEMBRANE MODULE A method of manufacturing a spirally wound membrane module. A conventional method consists of wrapping the membrane envelope (with the feed and permeate spacers) around a permeate tube. The sealing of the envelope is achieved by applying a suitable adhesive on the formeate tube and around the edges of the membrane envelope before being rolled to form a spirally wound module. The present method avoids the application of the adhesive before rolling the module. In fact, the module manufacture is the same except that no adhesive is applied and the module is rolled as before. The sealing of the module is achieved by "potting" the two ends of the rolled module. The feed spacer is kept free of adhesive by protecting the spacer by the use of a masking tape which is machined out once the potting agent is dry.

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