GAS APPLICATION

Instead of e.g. sulphuric acid, CO₂ is used to adjust the pH value in the cooling water circle. pH control with CO₂ has many advantages. CO₂ is non-corrosive and inert and the handling of CO₂ is easy and safe. In water CO₂ is a weak acid and therefore there is no risk of over-acidification of the cooling water. The use of CO₂ prevents enrichment of sulphate in the water, which is helpful for the discharge permit of the blow down water. At the same time it preserves the buffering alkalinity from make-up water. Both aspects contribute to prevention of corrosion in the cooling system. The consumption of CO₂ is calculated for each application from the operating parameters, such as the pH set-point, number of cycles of condensation and the quality of the added water.

ADVANTAGES OF USING CARBON DIOXIDE AT A GLANCE:

• Reduces corrosion problems 
• Easy and reliable pH adjustment without hyper-acidification  (no NaOH needed!)
• Safe handling, non dangerous for skin, eyes and airways
• Lower salt content in blow down water
• Ecological neutral

MESSER SOLUTION

Messer provides the process design as well as technology for adjusting cooling water pH with CO₂.