SOLAR REDUCTION OF CO2-POWERPOINT

SOLAR REDUCTION OF CO2-POWERPOINT - Solar Reduction of CO 2...

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Unformatted text preview: Solar Reduction of CO 2 Group 9 Ore-ofe Adesina Kemi Harris John Long Amy Robertson Shane Steagall Project Goals Develop a process that uses solar energy to reduce CO 2 to CO and O 2 Produce Viable Products Determine Applicability for Mars Exploration Introduction CO 2 Emissions Global Warming Changes global climate Melting of polar ice caps Acidification of the oceans Introduction CO 2 Emissions 16.8% increase in CO 2 constant increase since 1991 Introduction CO 2 Emissions CO 2 Source Industry Energy U.S.A. Largest Producer Background CO 2 Mitigation Strategies Solar Reduction of CO 2 Sequestration Artificial Rock Weathering Scrubbing the Atmosphere Background Solar Reduction Uses solar energy to convert CO 2 to CO and O 2 Reduces the amount of CO 2 entering the atmosphere Marketable Products CO O 2 Energy Process Overview CO TO SALE CO 2 PURIFICATION SYSTEM REACTOR SYSTEM COOLING/ RECOVERY CO PURIFICATION SYSTEM SPLITTER FLUE GAS FEED CO 2 TO SALE CO 2 QUENCH STREAM VENT GAS TO STACK CO 2 Purification Reactor System Cooling/Energy Production CO Purification CO2 To Sale & Quench Process Location San Juan Power Plant CO 2 emissions from plant Farmington, NM ~14.5 MM-ton/yr Purification System Typical flue gas from coal fired boilers (dry basis): 81% Nitrogen 14 % Carbon dioxide (0.3 <pp<0.15 bar) 5% Oxygen Trace impurities SO x (300-5000 ppmv), NO x , Fly ash Pure CO 2 feed stream is needed for reaction process Process Design Purification System Produces 120 tons CO 2 /day Fly Ash Removal Removal of NO x & SO x Purification of CO 2 Process Design Purification System Fly Ash Removal Electrostatic Precipitator Uses Electrostatic Charge Process Design Purification System NO x Removal SCR DENOX (Haklor Topsoe) Process Catalytic reduction of NOx with NH 3 4NO + 4NH 3 + O 2 4N 2 + 6H 2 O 6NO 2 + 8NH 3 7N 2 + 12H 2 O Process Design Purification System SO x Removal Utilizes Alkaline Compounds Lime slurry Soda ash KOH or NaOH Can reduce SO x to < 10 ppmv Process Design Purification System CO 2 Purification Methods Membranes Adsorption with Molecular Sieves Cryogenic Processing Ca(OH) 2 /Mg(OH) 2 Scrubbing Amine Scrubbing Process Design Purification System Membranes Require Additional Compression (Capital Cost) Do Not Produce High Purity Products Adsorption Use Molecular Sieves to Trap Gas Regenerate Product High Energy Requirements Low Product Purity Process Design...
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SOLAR REDUCTION OF CO2-POWERPOINT - Solar Reduction of CO 2...

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