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The CO2 CleanTech Scorecard

Twenty Good Reasons for Using CO2 CleanTech

  1. SUPERIOR WORKER SAFETY:
    • OSHA governs permissible exposure levels for cleaning solvents. For example, when using n-Propyl Bromide (nPB), OSHA requires a 25 ppm total work area level. By contrast, carbon dioxide (CO2) is an extremely safe process agent with a permissible continuous work area concentration limit of 5000 ppm.
  2. NO HAZARDOUS EMISSIONS:
    • Recycled CO2 emissions from cleaning, machining thermal control operations are not hazardous, posing no risk to workers or the environment.
  3. COST-OF-OWNERSHIP:
    • CO2 is quite inexpensive to purchase and use as compared to conventional process agents. The usage of CO2 is optimized for a particular application to produce the lowest possible cost-of-ownership (CoO) and return-on-investment (ROI).
  4. OPTIMIZED UTILIZATION:
    • CO2 technology can be utilized as a gas, liquid, plasma, and/or supercritical fluid agent. The proper phase and equipment type is matched to a particular application.
  5. ADAPTABLE TECHNOLOGY:
    • CO2 technology may be used in any configuration including in-line, batch, and is easily integrated with existing manufacturing lines, machining equipment, assembly equipment, and industrial processes.
  6. SUPERIOR EFFICIENCY:
    • Using a combination of CO2 processing agents in a manufacturing operation provides remarkable productivity and process improvements.
  7. NO DRYING REQUIRED:
    • CO2 cleaning technologies are 100% dry so that absolutely no drying process is required for even the most complex substrates.
  8. NO WASTE DISPOSAL:
    • CO2 technology does not produce a polluting wastestreams; only the dirt or soils or heat removed from a surface.
  9. LOW ENERGY COSTS:
    • The cleaning and cooling energy is stored in the liquid as delivered from a major industrial gas supplier.
  10. SUPERIOR QUALITY CONTROL:
    • Each batch of carbon dioxide is the same as the previous batch. There is no physical degradation of CO2 from one run to the next and following numerous recycling operations. This eliminates chemical quality control problems.
  11. LOWER LABOR COSTS:
    • Labor costs associated with CO2 cleaning, machining and thermal control operations are lower than equivalent conventional processes.
  12. NO REPORTING OR PERMIT COSTS:
    • CO2 is not regulated as a HAP, VOC, or GWG inventory compound. It is a recycled by-product of industrial and natural processes.
  13. REDUCED MAINTENANCE REQUIREMENTS:
    • CO2 cleaning and machining systems are simpler, self-cleaning and self-sustaining. Contaminants (residues, heat, chips) are removed continuously from the system and CO2 is added as needed to make-up for losses. There is no need for shutdown, bath dumps, batch refill operations, and system clean-out.
  14. CONSERVATION OF NATURAL RESOURCES:
    • Using recycled CO2 reduces the demand for organic solvents, coolants and lubricants which are produced using our vital energy resources.
  15. LESS GLOBAL WARMING GAS PRODUCTION:
    • Using recycled CO2 decreases the production of global warming gases attributed to the production and transport of organic solvents, coolants and lubricants. Also energy demand is reduced.
  16. LOWEST MATERIAL COST:
    • Recycled CO2 costs between 10x and 100x less (per unit mass) as compared to many conventional manufacturing process agents.
  17. ENABLING TECHNOLOGY:
    • CO2 technology enables more efficient manufacturing in many cleaning, machining and thermal control applications. For example, Composite CO2 spray cleaning technology employs variable compositions, power control, and provides superior cleaning agent economy as compared to conventional solvent spray cleaning processes. In another example, CO2 machining fluids enable more efficient machining of very hard materials such as Tungsten Carbide.
  18. NO FIRE HAZARD:
    • The National Fire Protection Association (NFPA) assigns a fire hazard rating to various industrial materials. The NFPA Ratings for carbon dioxide are very low: Health = 1, Flammability = 0, Reactivity = 0, Special = Simple Asphyxiant (SA).
  19. NO HEALTH HAZARD:
    • The Hazardous Materials Identification System (HMIS) was developed to help employers comply with OSHA's Hazard Communication Standard (HCS), 29 CFR 1910.1200. The HMIS rating for CO2 is the lowest: Health = 0, Flammability = 0, Reactivity = 0.
  20. NO ODOR:
    • The odors, vapors and mists associated with chemical-based cleaning and machining operations are obnoxious and harmful to people. Smelly odors cling to clothes, hair and skin. CO2 is a colorless and odorless.
 
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