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The main originators of non-biological turbidity are proteins and polyphenols or their precursors (particles from which turbidity gradually forms due to external conditions).
The colloidal stabilization of beer is a process by which the risk of the early formation of turbidity is eliminated.

If the beer is not stabilized, it will only last a few weeks. However, today’s retailers require beer to remain clear without becoming turbid for months.

Stabilization filtration equipment (FKS 100ST – FKS 600ST) ensures the colloidal shelf-life of beer while retaining its characteristic properties (color, lightness and taste, bitterness or sweetness). 

Benefits:

  • Colloidal stabilization significantly increases the commercial shelf-life of the beer. Without it, it is virtually impossible for bottled beer to have a shelf-life longer than 6 to 8 weeks
  • Stabilization filters are fitted with vertical filter elements – candles of the same design as the kieselguhr filters, which guarantee high quality and reliability of filtration. However, depending on the parameters of the stabilizing means, smaller slits are sometimes required when winding the candle, which is taken into account in their design requirements
  • FKS ST stabilization filters are especially suitable for larger breweries, where they can repeatedly use regenerable polyamide sorbents (PVPP – e.g. Polyclar, Divergan). In the case, the stabilizing filters are complemented with a regeneration station for the stabilization agents, where the stabilization agents are cleaned by rinsing with regeneration solutions (NaOH, HNO3, water). This improves the return on investment of the stabilization filter.
FKS ST stabilization filters
  • Description of the equipment

    The main parts of the stabilizer filter are:

    • filter body
    • dosing equipment
    • retention tank
    • connecting pipe with the main pump and armature
    • electrical equipment with control panel
    • measuring and regulation system
    • regeneration station (for regeneration of used stabilizers)
    • DESA catch filter
  • Automated functions

    FKS ST stabilization equipment is equipped with automated control and regulation functions as standard:

    • filter flow and dosing pump;
    • control of the pressure ratios in the filter (input/output, differential pressure);
    • Heating the stabilizer suspension (PVPP) prior to the start of the filter cycle;
    • switching the CIRCULATION - FILTRATION phases (depending on the primary filter phases);
    • concentration of chemical solutions (for regeneration);
    • temperature of chemical solutions and rinsing water.

    Do you require a higher degree of automation? We can arrange it for you at your request.

  • Technical data

    The parameters of the stabilization filter line are adapted based on the primary filtration using the FKS-type filters. A variant with one PVPP regeneration cycle is usually chosen for 2 primary filtration cycles.

    In order to design an optimal solution for you, we need to know your requirements for cycle capacity (hl) and the amount of PVPP needed for continuous dosing (g/hl).

    FKS primary filtration filter - design

     

    060

    100

    200

    300

    400

    600

    Assigned FKS ST-type filter

     

    040

    060

    100

    150

    200

    300

    Control and regulation

    Using PLC with a touch screen panel and switches

    Basic filtration surface

    m2

    4

    6

    10

    15

    20

    30

    Filter body volume

    liters

    225

    550

    1060

    1650

    2450

    2900

    Active sludge volume

    liters

    270

    400

    680

    1020

    1360

    2040

    Maximum PVPP filling

    kg

    41.5

    61.5

    105

    157

    210

    314

    Capacity of the cycle at KD < 50 g/hl

    hl

    800

    1200

    2000

    3000

    4000

    6000

    Working pressure (max)

    kPa

    600

    600

    600

    600

    600

    600

    Volume of tank for suspension preparation (PVPP)

    liters

    600

    800

    1200

    1600

    2200

    3200

    Volume of the retention tank

    liters

    400

    650

    1200

    2000

    2500

    3600

    Filter flow (beer)

    hl/h

    30 - 50

    50 - 80

    100 - 160

    150 - 240

    200 -320

    300 - 500

    Dimensions of the connection pipe

    DN

    40

    50

    65

    65

    80

    100

    Volume of regeneration solution tanks

    liters

    600

    600

    1500

    2100

    3500

    3500

    Number of regeneration solution tanks

    pc

    3

    3

    3

    3

    3

    3

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