Thiết bị cô đặc Wiegand dùng để cô đặc sữa và whey, thiết bị tiền cô đặc gồm 6 cấp.

Wiegand 6 Stage

Evaporation plant designed for concentrating milk and whey, consisting of the following components:
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- A pre-evaporator with : 6 stages (vertical falling-film tube bundles), approximately 15 metres high.
- A finishing evaporator consisting of 1 falling-film stage.
- A cooling unit.
- Piping, valves, pumps and various instrumentation.

The original supply did not include the electrical power and control panels, which were manufactured and connected separately from the GEA supply. The automation system and related software were also excluded from the supply.

Below are some of the plant's technical specifications:

- Plant capacity: 60,000 litres/hour of whey with a dry matter content of 6%.
- Final product concentration: up to 60% dry matter, corresponding to an evaporation capacity of 54,000 litres/hour of water.
- Saturated steam consumption at 12 bar during concentration: 6,200 kg/hour.
- Saturated steam consumption at 12 bar during concentration: 6,500 kg/hour.
- Installed electrical power: 130 kW.

These figures have been taken from the original purchase order. However, some modifications may have been made during the commissioning phase.

The plant was purchased in 1995 and it has been put into service in 1996. It was used for whey concentration until 2021/2022, when it was replaced by a reverse osmosis concentration system.
* Installed electrical power: 130 kW.