Articles
Mansfield Brewery Uses Liqui-Cel® Membrane Contactors To Nitrogenate Beer
March 11, 2009
•White Paper: Mansfield Brewery Uses Liqui-Cel® Membrane Contactors To Nitrogenate Beer
By Membrana
The non-dispersive diffusion system features a Liqui-Cel®‚ Extra-Flow™ Membrane Contactor manufactured by Celgard LLC of Charlotte, NC. The highefficiency contactor features a hollow-fiber contact medium and has been used to transfer a variety of dissolved gases, to or from an aqueous stream, in a variety of applications in the food and beverage, semiconductor, power, chemical, and pharmaceutical industries.
Mike Cleator, the brewery's chief engineer, explained that dispersive direct-injection technology already available for nitrogen introduction was considered disadvantageous. Direct injection would have introduced highly undesirable turbulence that would have knocked CO2 out of solution, because in order to make the nitrogen dissolve with any speed, pressure would have to be raised up to 8 – 9 bar(132 psi). With the Celgard technology, nitrogen could be introduced at low pressure – typically 30 – 45 psi – a level that is actually lower than the 60 psi pressure needed to move the beer around.
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