![]() ![]() ![]() In the glass industry, oxygen/fuel combustion is used to reduce particulate and NO x emissions in melting operations. Oxygen is used in the pulp and paper industry for a variety of applications, including pulp bleaching, black liquor oxidation, and lime kiln enrichment. In the chemical and petroleum industries, oxygen is used in the production of a wide variety of fuels and chemicals. It is used in medicine for therapeutic purposes and in the metals industry for steel making and metal-cutting applications. ![]() The principal uses of oxygen stem from its strong oxidizing and life-sustaining properties. Oxygen can be stored and shipped as either a gas or a cryogenic liquid. Oxygen is produced by air separation processes that use either cryogenic liquefaction and distillation or vacuum swing adsorption (VSA) separation. Oxygen (O2) constitutes approximately 21% of the air, has a gaseous specific gravity of 1.1, and has a boiling point of -297.3☏ (-183☌). ![]()
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