GEESCO
Dry Ice On-Line Cleaning System
Dry Ice On-Line Cleaning System
Leading Company in the Air Environment Industry GEESCO
Heat Exchanger Cleaning System
A technology that removes contaminants from waste heat recovery heat exchangers or boilers during operation using DRYICE cleaning technology.
Eco-friendly Cleaning Technology Using DRYICE
Dry ice micro-particles are sprayed at high speed through a nozzle, collide with contaminants, and expand up to 800 times in volume during sublimation, lifting and removing contaminants. The dry ice then sublimates completely, leaving no residue, making it a clean cleaning process.
Characteristics of the Heat Exchanger Cleaning System
| Item | Chemical / High-Pressure Water Cleaning | Heat Exchanger Cleaning System (GHCS) |
|---|---|---|
| Cleaning Conditions |
Water Spray Pressure • Gas Air Heater: 150~200 kg/㎠ or higher • Gas Gas Heater: 100 kg/㎠ or higher |
Dry Ice Spray Pressure • Gas Air Heater: 7 kg/㎠ or higher • Gas Gas Heater: 7 kg/㎠ or higher |
| Cleaning Material per Cycle |
• Water consumption per cycle: 700–2,400 tons • Wastewater generated: 700–2,400 tons |
• Dry ice consumption per cycle: 0.5–1.0 tons |
| Downtime per Cleaning |
• For GAH: Requires 1–3 days of shutdown • For GGH: Chemical cleaning requires 1–3 days shutdown / High-pressure water cleaning is possible during operation |
• GAH and GGH cleaning can be performed during operation |
| Advantages |
• Commercialized technology • Simple cleaning method |
• No corrosion damage since no water is used • Can be cleaned while the boiler is in operation |
| Disadvantages |
• Requires large amounts of industrial water • Generates large amounts of wastewater and treatment costs • For GAH, cannot be applied during operation due to risk of ESP damage |
• Low public awareness as it is a new technology |