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Mass and Energy Balance of Glycerol Reformer and Cost estimation

Mass and Energy Balance of Glycerol Reformer and Cost estimation. Mahbuba Ara 10-09-07. Reactions In The Reformer. C 3 H 8 O 3 3CO + 4H 2 CO + 3H 2 O CO 2 + 7H 2 Overall reaction: C 3 H 8 O 3 + 3H 2 O 3CO + 7H 2 AND

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Mass and Energy Balance of Glycerol Reformer and Cost estimation

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  1. Mass and Energy Balance of Glycerol Reformer and Cost estimation Mahbuba Ara 10-09-07

  2. Reactions In TheReformer C3H8O3 3CO + 4H2 CO + 3H2O CO2 + 7H2 Overall reaction: C3H8O3 + 3H2O 3CO + 7H2 AND CO + 3H2 CH4 + H2O H2O

  3. Material Balance of Reformer Dry Basis, vol% 67.9% H2 2% C3H8O3 600°C 28.8% CO2 18% H2O 2.90% CO 80% He 0.4% CH4 T = 125°C

  4. Basis, Conversion, Selectivity Basis, 100 mol/h feed. Conversion : 100% Selectivity : 75% where, selectivity = X X 100 Steam to Carbon molar ratio:9:1 Moles H2 produced 1 C atoms in gas phase RR where RR is the H2/CO2reforming ratiowhich depends on the reactant compound.

  5. Calculation of Enthalpy Enthalpy of Glycerol: Where

  6. Material and Energy Balance Q = ∑ noutHout - ∑ ninHin = 3162.7 KJ/h = 0.88 kW

  7. Reactions in SOFC For H2 fuel: Anode: 2H2 + 2O-2 -> 2H2O + 4e- Cathode: O2 + 4e- -> 2O-2 For CO fuel: Anode: 2CO + 2O-2 -> 2CO2 + 4e- Cathode: O2 + 4e- -> 2O-2

  8. To Determine The Voltage of SOFC E =E0 + (RT/2F)ln(PO2 0.5.PH2/PH2O), for one mole of H2 E =E0 + (RT/2F)ln(PO2 0.5.Pco/PCO2), for one mole of CO E0= -Δgf 0/2F Where, Δgf 0 is molar Gibbs free energy change at std. pressure. And F = Faraday constant = 96,485 coulombs Efficiency, η = μf 100% μf = Vc 1.48 Mass of fuel reacted in cell Mass of fuel input to cell

  9. Future work • Determine voltage and power of SOFC • Cost estimation

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