air separation ppt
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BYA.DEVIKA
AIR SEPARATION PROCESS
GUIDEM.SRINIVAS
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Contents
• Introduction• Properties• Applications• Available technologies• Comparison of the processes
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Introduction
• An air separation plant separates atmospheric air into its primary components nitrogen, oxygen, argon and other
rare inert gases.
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Air Products has produced over 2000 air separation plants and currently owns and operates over 300 air
separation plants
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Composition of dry air
Gas % by Volume % by Weight Parts per Million
(V)Chemical Symbol
Nitrogen 78.08 75.47 780805 N2
Oxygen 20.95 23.20 209450 O2
Argon 0.93 1.28 9340 Ar
Carbon Dioxide 0.039 0.0606 390 CO2
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Properties of Oxygen
• Colourless• Odorless• Gas phase(Oxygen changes from a gas to a liquid at a
temperature of -182.96°C)• Allotropes –Dioxygen, Ozone• Slightly soluble in water• Denser than air• Supports combustion but does not burn• Occur in many compounds including water,co2,iron ores
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Properties of nitrogen
• Colourless• Odorless• Inert diatomic gas• Molecular nitrogen condenses at −195.79 °C. • Occur in many industrial compounds, such ammonia, nitric
acid, organic nitrates
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Applications Oxygen
• Metal manufacturing• Chemicals• Petroleum refineries• Glass and Ceramics Industry• Pulp and Paper
Manufacturing• Health Care
Nitrogen
• Nitrogen blanketing• Manufacturing and
construction• Multi industries• Food and beverages• Rubber and plastic industry• Health care
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Available technologies
•Cryogenic process•Pressure Swing Adsorption •Membrane separation
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Cryogenic distillation• The most common method for Air separation is Cryogenic distillation• Cryogenic Air separation is the preferred technology for producing very high purity O2 and N2
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Cryogenic distillation
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Cryogenic distillation column
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Argon recovery
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Pressure swing adsorption
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Membrane technologies
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Comparison with other processes
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Future work
• Material and energy balance• Equipment design• Safety aspects• Process control of the unit • Materials of construction• Plant location and layout• Cost estimation
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