Magyar / Hungarian Dairy Experimental Institute Ltd. - Microfiltration Plant (MF)

Magyar / Hungarian Dairy Experimental Institute Ltd. Microfiltration (MF) Plant for Skim Milk which is designed for the fractionation of skim milk and was previously operated in a European dairy. The MF process selectively separates micellar casein from serum components such as whey proteins, lactose, and soluble minerals. The system is equipped with an integrated diafiltration (DF) stage to enhance the purity and functional properties of the casein-rich retentate. During microfiltration, skim milk is circulated across the membranes. Larger components, including micellar casein (and residual fat or bacteria), are retained as retentate, while smaller components—water, lactose, salts, and minerals—pass through the membrane as permeate. In the diafiltration step, fresh water is continuously added to the retentate while filtration proceeds. This “washing” of the casein micelles promotes the further removal of dissolved low-molecular-weight components without loss of the desired high-molecular-weight fraction. The added water dilutes the retentate, allowing lactose and soluble minerals to diffuse through the membrane, while micellar casein remains concentrated in the retentate. Key advantages of the system is efficient removal of lactose, enabling the production of low-lactose or lactose-free casein ingredients, reduction of soluble mineral content and production of high-purity micellar casein with improved functionality and processability.

The capacity of the line:

Skim milk input: 5.000 kg/h

Diafiltration input: 7.500 kg/h

MF/DF retentate output: 1.390 kg/h

Permeate output: 11.110 kg/h

This line exist out of

• Balance tank with 2x lids.
• Filter set with 2x filters.
• Feed pump, APV W 50/25-380N, 60 m3/h, 2 bar, impeller 175 mm, motor 5,5 kW.
• Permeate / CIP pump, APV W+ 30/80, 70 m3/h, 2 bar, impeller 140 mm, motor 7,5 kW.
• Filtration loop 1 with 5 modules build on 1 skid, 1 membrame per module, Area 135 m2, Spacer 43 mil, PTI FG8040-OS13-SL spiral wound.
• Boosterpump loop 1, APV W+ 25/210, 150 m3/h, 2,4 bar, impeller 280 mm, motor 18,5 kW.
• Filtration loop 2 with 5 modules build on 1 skid, 1 membrame per module, Area 135 m2, Spacer 43 mil, PTI FG8040-OS13-SL spiral wound.
• Boosterpump loop 2, APV W+ 25/210, 150 m3/h, 2,4 bar, impeller 280 mm, motor 18,5 kW.
• Filtration loop 3 with 5 modules build on 1 skid, 1 membrame per module, Area 135 m2, Spacer 43 mil, PTI FG8040-OS13-SL spiral wound.
• Boosterpump loop 3, APV W+ 25/210, 150 m3/h, 2,4 bar, impeller 280 mm, motor 18,5 kW.
• Filtration loop 4 with 5 modules build on 1 skid, 1 membrame per module, Area 135 m2, Spacer 43 mil, PTI FG8040-OS13-SL spiral wound.
• Boosterpump loop 4, APV W+ 25/210, 150 m3/h, 2,4 bar, impeller 280 mm, motor 18,5 kW.
• Plate heat exchanger, APV H17, serial nr 57312, year 2002, 4 sections (steam – hot water / milk – hot water / milk – permeate / permeate – ice water), number of plates: 81 in total (7 - 13 - 29 - 32). Maximum allowable pressure: 8,0 bar. Maximum allowable temperature: 135 °C. Beam length: 800 mm. Header connections: 2 Up and 2 Down. Follower connections 2 Down.
• Control panel with frequency converters and motor groups.

Flowscheme available. No manuals available.