L05-prod1 - Hydrogen Production 1 8/19/2005 TOPIC TOPIC...

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Unformatted text preview: Hydrogen Production 1 8/19/2005 TOPIC TOPIC TOPIC TOPIC: H y d r o g e n P r o d u c t i o n LECTURE LECTURE LECTURE LECTURE # # # # 5 Hydrogen Production 2 8/19/2005 Hydrogen Systems Hydrogen Systems Hydrogen Hydrogen Production Plants Production Plants Liquid H Liquid H 2 Gaseous H Gaseous H 2 Jet Engines Jet Engines IC Engines IC Engines Fuel Cells Fuel Cells Flame Combustors Flame Combustors Catalytic Combustors Catalytic Combustors H 2 /O 2 steam generators steam generators Fuel Cells Fuel Cells Transportation Transportation Thermal Energy Thermal Energy Electric Power Electric Power Source: Hydrogen Production 3 8/19/2005 s Steam reformation (SMR) s Partial oxidation (POX) s Coal gasification (CG) s Biomass gasification (BG) s Electrolysis s Grid (Coal, Nuclear) s Wind Power s Solar Photovoltaic s Solar Thermal Power s Thermal Cracking s Photochemical s Photo-electrochemical s Thermochemical cycles s Solar Thermal s Nuclear s Biological production s Thermal Dissociation s Photodegradation Production Production Technologies Technologies Source: Hydrogen Production 4 8/19/2005 b SMR takes a light hydrocarbon feedstock, usually methane, reacts it at elevated temperatures (700 - 925 c) with steam to produce H 2 and CO b Catalyst is required which undergoes desulfurization prior to entering the reformed b Water-gas shift reaction (around 350 c) to produce additional H 2 and CO 2 b H 2 and CO 2 mixture is purified and separated Steps in SMR Steam Methane Steam Methane Reformation Reformation Hydrogen Production 5 8/19/2005 2 2 2 2 H m n nCO O nH H C m n + + + 2 2 2 H CO O H CO + + Chemical reactions involved b Initial gas production b Water-gas shift reaction Steam Methane Steam Methane Reformation Reformation Hydrogen Production 6 8/19/2005 Reform er Fuel is catalytically converted to syngas. Som e carbon dioxide and unreacted fuel rem ains....
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This note was uploaded on 09/05/2011 for the course LECTURE 101 taught by Professor Staff during the Fall '09 term at University of Florida.

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L05-prod1 - Hydrogen Production 1 8/19/2005 TOPIC TOPIC...

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