Vacuum Degassing Plants
| Vacuum Water Degassing, 20 ppb |
|---|
A vacuum degassing plant for water is used when still beverages are produced, or the site does not allow the installation of a large degassing column. Our design uses the reliable operation principle of a stripping column, but with a vacuum as an additional degassing effect. The main reason for the construction of three stationary columns is that the water is exposed to the vacuum for much longer in this way than is possible with any other construction. Our vacuum degassing plants use the vacuum very thoroughly with several mechanisms of action. First of all in the column heads. Here the water is sprayed into the vacuum. A large part of the oxygen is thus already removed. Next the water trickles down and then along the packing. Here the water is exposed to the vacuum (as a thin film). A third effect is exploited in the last column. Before atomising the water a slight amount of CO2 or N2 is added. The CO2 / N2 is sucked through all three columns by the vacuum current in a counterflow configuration. The CO2 / N2 acts as a stripping gas. A reinforcement of all three degassing effects occurs (not shown in the simplified diagram) by the multiple circulation through the respective columns. If desired, a part of the added CO2 gas can be added to the finished degassed water (also not shown in the diagram). The water will be buffered with CO2. The tendency to re-contamination with oxygen is thus reduced.
| Sizes: | |
| Type 32 | max. 6 m³/h (60 hl/h) |
| Type 50 | max. 12 m³/h (120 hl/h) |
| Type 65 | max. 23 m³/h (230 hl/h) |
| Type 80 | max. 35 m³/h (350 hl/h) |
Meaningful (economically) achievable residual oxygen in the degassed water: <0.02 mg (ppm) O2 / litre or <20 µg (ppb) O2 / litre
The value for the residual oxygen depends on the oxygen content and the temperature of the raw water. The cooling of the water should therefore always take place after the water degassing.
| Vacuum Water Degassing, 80 ppb |
|---|
In water for soft drinks, a higher residual oxygen content is accepted (compared to water in beer production). The required residual oxygen of 0.08 ppm (0.8 ppm in fresh water at a water temperature of approximately 20 ° C) can be achieved with only one vacuum column. This is a 10-fold reduction of the oxygen. This degassing module is integrated into our beverage mixing plants (in-line mixer). The height of the column and the column diameter is determined individually for each application case.
| Sizes: | |
| Type 32 | max. 6 m³/h (60 hl/h) |
| Type 50 | max. 12 m³/h (120 hl/h) |
| Type 65 | max. 23 m³/h (230 hl/h) |
| Type 80 | max. 35 m³/h (350 hl/h) |
Meaningful (economically) achievable residual oxygen in the degassed water: <0.08 mg (ppm) O2 / litre or <80 µg (ppb) O2 / litre
The value for the residual oxygen depends on the oxygen content and the temperature of the raw water. The cooling of the water should therefore always take place after the water degassing.
