The water is heated up to 74 °C in a 3-zone plate heat exchanger by the already deaerated water coming from the stripping column and by low pressure steam. The water is distributed homogeneously to the structured packing at the top of the column. The water slowly flows downwards through the structured packing in counter current flow to the CO
2. The CO
2 is fed in at the bottom of the column.
A long and intensive contact between water and stripping gas is ensured by the high-performance structured packing. CO
2 is dissolved in the water up to a level of 0.5 g/l and at the same time suppresses the oxygen. Optionally, nitrogen can be used as stripping gas.
The deaerated water is pumped from the bottom of the column through the plate heat exchanger, where it is cooled by the incoming water. Finally the water is cooled to 2 °C in the plate heat exchanger by glycol or ammonia.
Sensors for oxygen, level, flow and temperature monitor the proper functioning of the system.
The unit can be controlled by a local PLC with a touch panel or by a process control system.
Designed for high hygienic standards, all common cleaning agents in the beverage and chemical-pharmaceutical industry can be used for CIP cleaning.
