| http://www.w3.org/ns/prov#value | - The amount of overfire air, that is, vitiated air and/or fresh air and/or industrial grade oxygen, injected into the combustion chamber to form an oxidizing tertiary combustion zone is an amount sufficient to provide about 5% to about 50% excess air within the oxidizing tertiary combustion zone necessary for the complete combustion of carbon monoxide, hydrogen, hydrocarbons and other combustibles
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