Product category:
Boilers, Heat Exchangers, Dryers and Refrigeration
News Release from: Alfa Laval | Subject: Beer recovery
Edited by the Processingtalk Editorial
Team on 16 January 2008
New system recovers beer - and profits
The Alfa Laval cross-flow membrane filtration beer recovery system has been developed to recover beer and surplus yeast from the fermentation and maturation stages of the brewing process
The system is so efficient that it can recover up to 2% of total beer production as high quality, oxygen-free beer while also concentrating recovered yeast up to 20% dry matter The continuous process is based on a self-contained skid housing a number of modules of plate and frame micro-filtration membranes
This article was originally published on Processingtalk on 12 Sep 2005 at 8.00am (UK)
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Each module can provide between 30m2 to 168m2 of filtration surface area, depending on the number of plates.
Consequently, the system can be accurately sized to the application by adding or removing the requisite number of plates.
Polyvinylidene fluoride (PVDF) - an inert, beverage-grade fluoropolymer - is used for the membranes.
Its pore size of 0.45um provides good retention of both yeast and other micro-organisms and also makes the system suitable for other microfiltration duties involving high viscosity products containing suspended solids.
The plate and frame design of the filtration modules and the open channel configuration ensure excellent flow dynamics and high levels of efficiency under low pressure conditions which ensures that the system requires minimal energy input.
In addition, the cost of replacing the membranes is low compared to competitive ceramic systems.
The theme of economic efficiency is repeated in the system ability to run, automatically, for up to 20 hours continuously with no requirement for batch recirculation.
This not only reduces the labour content but also ensures that yield control is consistent across a total cycle.
In addition, the need for chemicals for cleaning is greatly reduced, particularly as the beer recovery system is compatible with most commercial cleaning agents.
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