Industrial Water Re-Use & Condensate Return
Boiler System Protection
Protecting boiler systems from corrosion and recovering treated process water for reuse, makes financial sense and has a positive environmental impact.
Steam is usually generated to produce electrical power at power stations, at combined heat & power (CHP) co-generation plants or to supply heat for process systems. Significant latent heat energy is contained within the steam and condensate, so optimising recovery is important.
Condensate Return
Condensate return and water reuse are essential practices in steam systems for improving efficiency and sustainability.
Condensate is the water formed when steam cools and condenses. Instead of discarding this water, it can be returned to the boiler. This practice has many benefits, most importantly there are associated energy savings since condensate is very hot. Reusing the condensate therefore reduces the energy needed to heat new water.
Additionally, this conserves water consumption especially as the condensate is effectively treated deionised water. Fresh make-up water would require additional chemical treatment and associated cost.
However, contamination of the condensate must be avoided to protect boiler systems from corrosion. Progressively, industry has installed continuous monitoring systems on the condensate return, to identify harmful cross contamination.
Key Water Quality Parameters
- Total Dissolved Solids (TDS)
- Conductivity & Temperature
- Dissolved Oxygen (DO)
- Total Organic Carbon (TOC)
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