Carbon Dioxide Applications

Food and Beverage

Carbon dioxide is used in beverage carbonation. A natural anti-microbial, carbon dioxide is also used to increase the shelf life of juice and dairy products, protecting taste and texture, and reducing the need for preservatives, natural and artificial. Other applications include: food freezing and chilling, packaging, temperature control, ingredient cooling and conveying, and in-transit refrigeration.

Water/Wastewater Treatment
Industrial and municipal wastewater must be neutralized before being discharged to the environment. Carbon dioxide replaces harsher acids for the alkaline neutralization process. It's safer and cheaper than sulfuric-acid systems, improves controllability, and there's less downtime and no labor to handle chemicals. It also is less corrosive, and easier to handle and store.
Metal Fabrication
Commonly utilized as a shielding gas during welding. This prevents atmospheric contamination of molten weld metal during gas shielded electric arc welding process
Plant Growth
Carbon dioxide systems greatly improve growth and quality of plants in the greenhouse. Increasing concentrations of the gas results in larger, healthier and faster-growing plants and lower operating costs, especially during the winter, when it can reduce heating costs by 50%. Carbon dioxide replaces gas generators, saving fuel costs and eliminating harmful emissions.
Pulp and Paper
Carbon dioxide is being used for several different applications within paper mills, all developed to reduce costs and recover valuable chemicals used within the mill process. A process using carbon dioxide, instead of sulfuric acid, to treat pitch build-up in screen rooms is proving very successful.
Saving the Forest
Carbon dioxide is used to make precipitated calcium carbonate (PCC), which is used to reduce the use of virgin wood fiber in paper making. Applications include: supply of carbon dioxide for on-site PCC production and in-situ formation of PCC during the paper-making process.
Energy Source
Storage of carbon dioxide at its triple point (the temperature-pressure combination at which carbon dioxide can exist simultaneously as a solid, liquid or gas) is being tested as a means of providing closed-loop refrigeration in order to shift electrical-energy demand to off-peak consumption hours. Under test in Japan, the process offers the potential to customers to shift electrical load while maintaining temperatures as low as minus 60°F (-51°C).
Cleaning and Solvent Extraction
In its supercritical state (87.9°F (31.1°C) and 1070.6 psia (7.38MPa)), carbon dioxide becomes a versatile solvent. It can replace chlorinated fluorocarbons to clean equipment components. It also can replace many volatile organic chemicals for operations such as decaffeinating coffee or extracting fat from food products.
Fire Fighting
Carbon dioxide smothers fires without damaging or contaminating materials and is used for fighting fires when water is ineffective, undesirable or unavailable. Carbon dioxide does not burn and does not support ordinary combustion, and because of these properties it is used for extinguishing fires. Carbon dioxide does not burn and does not support ordinary combustion, and because of these properties it is used for extinguishing fires
Special Applications - Food & Beverages - Quick Freezing
Food processing (quick freezing): Dissolved under a pressure of two to five atmospheres, carbon dioxide causes the effervescence in carbonated beverages. When released, CO2 expands suddenly and causes so great a lowering of temperature that it solidifies into powdery “snow”
Special Applications - Health Care
Surgical dilation by intra-abdominal insufflations - The presence of carbon dioxide in the blood stimulates breathing. For this reason, carbon dioxide is added to oxygen or ordinary air in artificial respiration and to the gases used in anesthesia.
Special Applications - Oil well recovery
The first type of service would be generally large 'CO2 floods', using CO2 for enhanced oil recovery, generally regarded as secondary and tertiary recovery methods beyond the primary recovery, which is only accomplished with water.
Special Applications - Dry Ice Blasting
Dry ice blasting is similar to sand blasting, plastic bead blasting, or soda blasting where a medium is accelerated in a pressurized air stream to impact a surface to be cleaned or prepared. But that's where the similarity ends. Dry Ice Blasting Blasting. Instead of using hard abrasive media to grind on a surface (and damage it), dry ice blasting uses soft dry ice, accelerated at supersonic speeds, and creates mini-explosions on the surface to lift the undesirable item off the underlying substrate.