14-by-40 Liqui-Cel Membrane Contactor

The 14-by-40 Liqui-Cel Membrane Contactor extends the capacity of the Liqui-Cel family of deaeration products from 400 gpm to 550 gpm (125 m3). It consists of a polyvinyl chloride (PVC) housing containing polypropylene hollow-fiber membranes knitted into an array that is wound around a distribution tube with a central baffle. During operation, the liquid flows over the outside of the hollow fibers, and the baffle directs the liquid radially across the array. A stripping gas or vacuum, either separately or in combination, is applied inside the hollow fibers. The module contains 4,015 ft2 (373 m2) of membrane area, has a pressure rating of 4.1 bar (60 psig), and is NSF/ANSI 61 compliant. Membrane-based degassing systems offer an alternative to forced-draft deaerators and vacuum towers.