Water Deaerating Systems
GEA VARIDOX-H hot water deaeration system
Oxygen in beer or other beverages can impair both shelf life and taste. For this reason, optimum degassing of the water used for beverage production and redilution of beer is of enormous importance for product quality. With the help of hot degassing, GEA VARIDOX-H water degassing system achieves very low residual oxygen levels, making it suitable for a wide range of applications.
Deaeration of beverage water
The VARIDOX-H system incorporates sensors for flow rate, filling level and, optionally, oxygen, and these sensors continually monitor key process parameters.
Water at 72 °C is fed into the deaeration column and slowly trickles down the packed columns. The high temperature strongly reduces the solubility of the oxygen in the water. The countercurrent CO2 (N2) ensures an additional release of oxygen.
The plate heat exchanger technology enables approximately 90% heat recovery, by means of a regenerating step, while a subsequent cooling section cools the deaerated water to the desired outlet temperature
VARIDOX CIP is carried out by passing the cleaning solution through the product lines and deaeration column.
Features
- Low residual oxygen content: <0.02 mg/l (20 ppb)
- Even lower residual oxygen levels of <0.01 mg/l (10 ppb) or even <0.005 mg/l (5 ppb) achievable by increasing deaeration column height
- Water pasteurization (≥25 PE)
- Heat recovery ≥90%
- Low CO2 consumption
- Lower operating costs when compared with dearation under vacuum
- Short installation time (the unit is pre-assembled)
- Low maintenance costs
- Can be supplied for flow rates between 20 hl/h and 1,000 hl/h
Technical data
- Water inlet pressure: 2 bar
- Control air pressure: 6-8 bar
- Materials: 1.4301 / EPDM
- CO2 inlet pressure: 6-8 bar
- CO2 consumption: 0.05 g/l
- CO2 included in the water: 0.45 g/l
- CO2 required: 0.5 g/l
- CO2 quality: >99.998% purity
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