Fuel Cells Explained

FUEL CELL POWER PLANT: MAJOR SYSTEM COMPONENTS

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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

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Fuel Cells Explained

 


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