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A chlorate candle, or an oxygen candle, is a cylindrical chemical oxygen generator containing a mix of sodium chlorate and iron powder. When ignited, the mixture smolders at about 600 °C (1,112 °F), producing sodium chloride, iron oxide, and about 6.5 man-hours of oxygen per kilogram of the mixture. It releases oxygen at a fixed rate. The mixture has an indefinite shelf life if stored properly; candles stored for 20 years have shown no decrease in oxygen output. The oxygen is released by thermal decomposition. The heat is supplied by the burning iron. The candle must be wrapped in thermal insulation to maintain the reaction temperature and to protect surrounding equipment.

Potassium and lithium chlorate, and sodium, potassium and lithium perchlorates can also be used in oxygen candles.

An explosion caused by one of these candles led to the deaths of two Royal Navy sailors on HMS Tireless, a nuclear-powered submarine, under the Arctic on March 21, 2007. The candle had become contaminated with hydraulic oil, which caused the mixture to explode rather than burn

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Advances in technology have provided a new type of industrial oxygen generator system. Pressure swing adsorption (PSA) incorporates a material called molecular sieve for gas separation. In the case of oxygen generation a zeolite-based sieve forces preferential adsorption for nitrogen. Clean, dry air is passed through the sieve beds on the oxygen generator, producing an oxygen-enriched gas. The PSA method of extracting oxygen from air is being used increasingly for industrial and medical purposes. PSA appliances of any size can be developed and uses include: Hospitals, Vets, Glass Blowing, Aquaculture and Ozone Generation.

I have no idea why this answer posted twice, I only clicked once, must be a bug.?

13 years ago. Rating: 0
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Advances in technology have provided a new type of industrial oxygen generator system. Pressure swing adsorption (PSA) incorporates a material called molecular sieve for gas separation. In the case of oxygen generation a zeolite-based sieve forces preferential adsorption for nitrogen. Clean, dry air is passed through the sieve beds on the oxygen generator, producing an oxygen-enriched gas. The PSA method of extracting oxygen from air is being used increasingly for industrial and medical purposes. PSA appliances of any size can be developed and uses include: Hospitals, Vets, Glass Blowing, Aquaculture and Ozone Generation.

Manufactures include OGSIUK and Shenzhen Sibo Industria.

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A chemical oxygen generator is a device releasing oxygen created by a chemical reaction. The oxygen source is usually an inorganic superoxide, chlorate, or perchlorate. A promising group of oxygen sources are ozonides. The generators are usually ignited mechanically, by a firing pin, and the chemical reaction is usually exothermic, making the generator a potential fire hazard. Potassium superoxide was used as an oxygen source on early manned missions of the Soviet space program, for firefighters, and for mine rescue.

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