Co2 solidscientificprinciples
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Co2 solidscientificprinciples Presentation Transcript

  • 1. Characteristics of Dry Ice Blasting Blast Media Equipment Scientific Principles
  • 2. Blast Media – Dry Ice Solid form of Carbon Dioxide Available in Pellets and Flakes -109°F / 79,6 °C Inert (non-combustible) RECYCLED - Man-made bi-product of hydrocarbon and ammonia production 0.03%/Vol in normal atmosphere
  • 3. Scientific Principles DRY ICE BLAST CLEANING Impact Flushing Action of CO2 Particles Uses kinetic energy effectively sublimates on impact.
  • 4. Scientific PrinciplesThermal EffectKinetic EffectSublimation Effect
  • 5. Thermal EffectDry ice particles have a temperature of –109F.When these particles impact the impurities onthe surface, the impurities are cooled downtremendously, shrink and then loosen from thesurface. In most cases the surface temperaturewill fall below most impurities freeze point. Asimpurities freeze they lose their adhesion.
  • 6. Kinetic EffectWhen dry ice particles exit the nozzle, they havekinetic energy. As in commercial blast cleaningthe impurities are dislodged from the surface.Unlike sand, dry ice has a lower hardnesscharacteristic and therefore greater kineticenergy can be used to break impurities from thesurface without damage occurring.
  • 7. Sublimation EffectWhen dry ice particles strike the surface, theyimmediately phase into gas from solid. The effectincreases the gas volume approximately 700times. The sudden increase in volume assists inmoving the brittle fragments of impurities awayfrom the surface.
  • 8. Types of ApplicationsOrganic/Biological ContaminantsMan-made/Industrial ContaminantsSurface Preparation & Coatings Removal
  • 9. Types of Applications Organic/Biological Contaminants Mold Moss Mildew Bacteria Dirt/Mud Decaying Matter Algae Fruits & Vegetables Bird Droppings Sugars/Syrups Soot Flours & Grains
  • 10. Types of Applications Man-Made/Industrial ContaminantsManufacturing Residue Chemical PolymersSoot/Carbon Build-up HydrocarbonsAdhesive Overspray Paper/PulpWelding Slag ScaleCement/Plaster InkGrease & Grime Gum
  • 11. Types of Applications Surface Preparation and Coatings RemovalSurface Rust & Oxidation AdhesivesPaint/Graffiti ResinsSealers Poly. FoamLacquers PlasterUrethanes Tar
  • 12. What Surfaces Can Be Cleaned With FreezeBlasting? • Steel • Tile • Glass • Plastic • Aluminum • Rubber • Wood • Brick/Stone • Fiberglass • Cement
  • 13. What Can Be Cleaned?• Belts and Hoses• Co-Generators • Mfg. Equipment & Tools• Compressors/Condensers • Printing Presses• Escalators/Elevators • Relays/Bearings/Cylinders• Food Processing/Packaging • Turbines Lines • Trucks/Engines/Boilers/• High Polished Molds Tanks• Hydro-Electric Generators • Wood – Mold Remediation
  • 14. DRY ICE BLASTING VS. TRADITIONAL CLEANING PROCESSES NON- Hazardous Method Abrasive Material1 Performance Toxicity Conductivity Dry Ice Blasting YES NO Superior NO NO NO YES Moderate YES NO Sand Blasting NO YES Moderate YES NO Glass Bead Blasting NO YES Limited NO NO Walnut Shell Blasting YES NO1 Inferior NO YES Steam Jet Blasting YES NO1 Inferior NO YES Water Jet Blasting NO YES Limited YES YES Chemical Solvents NO NO1 Inferior NO NO Hand Scrubbing1 Any characteristic of hazardous material being removed becomes the characteristic of the media used for removal
  • 15. Benefits of Dry Ice BlastingNew technology breeds new phrases – “Clean Cleaning”Unlike all other surface preparation technologies, there are: • NO Residual chemicals; • NO Residual abrasives; • NO Residues of any kind; • NO Excessive moisture; • NO Additional mess to clean up; • NO Hazardous materials to dispose of; • NO Headaches.There is NO other environmentally safer alternative.
  • 16. Benefits of Dry Ice Blasting Dry Ice Blasting SHOULD Be Used When There Is A Concern For:• Surface Abrasion• Avoidance of Drainage into Watershed/Storm Drains• Avoidance of Sand/Grit Entrapment• Difficult or Excessive Cleanup• Complexity of the Surface• Critical Production Downtime• Elimination of Solvents/Chemicals• Elimination of Rinsing and Drying• Delicate Electrical Wiring
  • 17. Benefits of Dry Ice Blasting?New technology breeds old phrases – “Bottom Line”In today’s business environment, cost cannot only be measured inthe amount of capital outlay. Many other factors are considered.• Increasingly important to lower the bottom line to maximize the top line.• Labor costs, workman’s comp insurance, and environmental requirements are only small examples of the burden many companies experience.• Important to find and use new technology that can relieve these burdens. Dry Ice Blasting is a cost effective means of reducing overhead.
  • 18. Environmental Concerns Green House Effect – Global WarmingIt has been established by EPA studies that CO2 emissions arecontributory to the global warming problems of the world.Our process uses CO2 that would otherwise be vented to theatmosphere.Therefore, our process does not add any additional CO2emissions. Our process uses, in essence, recycled wasteproduct, then converts it into a usable phase. It is applied as areplacement for traditional hazardous material such as solventsand chemicals.
  • 19. Industries Served by Dry Ice Blasting• Aerospace • General Mfg.• Automotive Mfg. • Marine• Construction • Oil/Petrochemical• Energy/Nuclear • Printing/Publishing• Food/Agriculture • Semi-Conductor• Foundry/Smelting
  • 20. Results / Examples
  • 21. Cleaning Hydro-Electric Turbine
  • 22. Cleaning Turbine Dovetails
  • 23. Cleaning Turbine Blades
  • 24. Cleaning Other Turbine Components