Vacuum Water Degassing VWD

The water is distributed homogeneously to the structured packing at the top of the column. The CO₂ is fed in at the bottom of the column. The water slowly flows downwards through the structured packing in counter current flow to the CO₂.

A long and intensive contact between water and stripping gas is ensured by the high-performance structured packing. CO₂ is dissolved in the water up to a level of 0.2 g/l and at the same time suppresses the oxygen. The operation of the column under vacuum, with a pressure about 80 mbar, reduces the partial pressure of gas. Low oxygen values and CO₂-consumption are reached. Optionally, nitrogen can be used as stripping gas. The deaerated water is pumped out of the bottom of the column with a frequency controlled pump. Optionally the water can be cooled down in a 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.

Capacity	25 to 1,000 hl/h / 2.5 to 100 m3/h
Residual oxygen content	< 20 ppb / 0.02 ppm
CO2 consumption	0.4 g/l
CO2 supply	min. 6 barg / ≥99.98% purity
Cooling media	glycol or ammonia