M4-NUWC Overview Fontaine.pdf
M4-NUWC Overview Fontaine.pdf
M4-NUWC Overview Fontaine.pdf
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Fuel Processing (Reformers)<br />
Catalytic Partial Oxidation (CPOX )<br />
•<br />
•<br />
•<br />
CmHn + m/2 O 2<br />
Exothermic Reaction -<br />
n/2 H 2<br />
+ mCO + heat<br />
no additional heating required for heating inlet<br />
Fast Kinetics - reformer starts and achieves operating temperature quickly<br />
Air-dependent Operation -<br />
Steam Reforming<br />
•<br />
•<br />
CmHn + mH2O + heat (m+n/2) H2 further studies needed to consider pure O 2<br />
+ mCO<br />
Endothermic reaction - requires heat for reaction and fuel/water<br />
evaporation<br />
-<br />
-<br />
Heat is supplied from fuel cell exhaust gases and CO2 scrubber<br />
Steam can be supplied by SOFC product gases (anode recycle)<br />
More hydrogen produced per mole of fuel than in CPOX<br />
feed<br />
• Air-independent operation & 15% reduction in O 2 consumption vs. combustion
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