Fuel Processing
Reformer
A vessel within which fuel and other
gaseous recycle stream(s) are reacted with water vapor and heat,
usually in the presence of a catalyst, to produce
hydrogen-rich gas for use within the fuel cell.
There are a number of different sources of hydrogen and methods for reforming.
Steam reformation
- Fuel reacts with water over a catalyst
- Requires heat input
Partial oxidation
- Fuel reacts with air (w/o catalyst)
- Typically produces heat
Auto-thermal
- Combination of above (fuel, water, air)
- No net heat required or produced
Other – e.g., Cyclic
- Oxidation states of metals
- Alternatively pass fuel and oxidant over parallel beds
- Calcium oxide, calcium carbonate for carbon absorption