Melk- en zuivelproductie

Tetra Pak Ultra filtration UF

Ultrafiltration plant for Fermented products

3 Main items:
1) Thermisation unit
2) Ultra filtration UF for fermented milk
3) Cooler and Silo.

The line is used to produce Quark/skyr.
The Thermisation and Ultrafiltration unit are also suitable to make other fermented and concentrated dairy products like: Skyr, Mascarpone and Double Cream cheese.

Key data:
-input: 3.500 - 5.000 liter per hour fermented skim milk, Full fatt milk or enriched products.
-Concentration factor: 1.8-2.5

1) Thermisation unit
Complete skid mounted thermisation unit.
Flow rate : 3.500 up to 5.000ltr (depending on product).
Make : Tetra Pak

Temperature cycle:
Input: 21-30 °C (incubation temperature) -> recuperation (permeate cooler) -> thermisation 55/60°c or pasteurisation at 72/95 °C -> holding -> out to ultra-Filtration at approx. 45 °C.

Complete unit including:
* Stainless steel frame in which everything is preassembled.
* Closed balance tank with spray bowl.
* Centrifugal product pump, covered in stainless steel tetra, Flush seal, type: LKH
* Plate heat exchanger, 4 stages, new, Tetra Pak, Clip6-SR Model.
* ROI box with all connections for sensors and pneumatic valves.

* Holding tube for 5.000 liter per hour, variable by connecting more or less tubes 30 sec up to 180 seconds in 9 stages.

2) Ultrafiltration unit
Manufacturer: Tetra Pak
Type : Tetra Alcross US P&F
Serial number: T5845810096
Year : 2010
Capacity : input up to 5.300ltr/h

Description :
Dsdez Imdaepfx Ag Ascn
Concentrates a yoghurt or a fermented milk to achieve the desired composition and texture.

The UF splits the product in Rentate and Permeate.
The Retentate is the product, Protein and Fatt (if included) concentrated.
The advantage of this design UF (compared to Spiral wound UF and separator) is that it is suitable for Fermented products with and without Fatt.
Also, all proteins are concentrated (even the whey proteins).

This leads to high pressures in the system, filtration can only be achieved with a plate and frame filtration with flat FR60pp filters and Rotary piston circulation pumps.

Some example products to be made with this system:
input: skim milk 9% TS -> output approx. 16% TS (Skyr).
Input: input 20% TS incl fatt -> Output Cream cheese or mascarpone
Input: Ferm. skim milk pre-concentrated up to 12% TS -> output up to 18% TS (Quark).

The limiting factor is the Permeate out flux.

Approx. Permeate per stage:
Stage 1) 1100-1755ltr/h 13.5m2 filters.
stage 2) 675/1170ltr/h 9m2 filters.
stage 3) 320/585ltr/h 4.5m2 filters.
stage 4) 300/585ltr/h 4.5m2 filters 15bar.

Filters plate and frame type, manufacturer: Tetra Pak - DDS, model: M37

Complete unit including:
* Stainless steel frame.
* 2 Balance tanks with spray bowl. (Feed and permeate return).
* Feed pump tetra LKH.
* 4 circulation loops including circulation pumps.
First stage with centrifugal pump, 3 stages with Waukesha 320-U2 Rotary piston high pressure pumps.
last stage up to 15bar pressure for high viscose products.

3) Quark silo, cooler and pump .

Manufacturer: Schwarte-Milfor
Type : Quarksilo
Serial number: 3580
Year : 2011
Capacity : 5.000 liter
Description :
Strong Conical for very viscose products.
Insulated
Hermetic, Ultra clean with sterile air.
Sensors for level and temperature.

On infeed:
- Plate cooler
Make : Tetra
Model : Clip line C6
Thermal cycle: 45-> Approx. 18°C