Fuel cell system

A solid oxide fuel cell system, the solid oxide fuel cell system comprising:

• at least one fuel cell and a duct to supply oxidant to the cathode of the at least one fuel cell, the duct comprising a first sorbent getter and second sorbent getter located adjacent each other, and each having a plurality of oxidant apertures, each sorbent getter adapted to extract volatile species from the oxidant, each sorbent getter comprising at least one member of the group consisting of magnesium oxide, calcium oxide, manganese oxide and magnesia magnesium aluminate (MMA) MgO+MgAl2O4 based material,
• wherein each sorbent getter is porous with a pore size ranging from approximately 0.1 μm to approximately 100 μm,
• wherein an oxidant aperture spacing for the plurality of oxidant apertures of each of the first and second sorbet getters and an oxidant aperture size for the plurality of oxidant apertures of each of the first and second sorbet getters are selected to dissipate jetting in the air stream flow over a separation distance between the first and second sorbet getters,
• wherein an oxidant aperture spacing for the plurality of oxidant apertures of the second sorbent getter is selected so that the flow over a surface of the second sorbent getter from a point of impingement on a second surface of the second sorbent getter to one of the plurality of oxidant apertures in the second sorbent getter does not form a full boundary layer, and
• wherein the plurality of oxidant apertures of the first sorbent getter are arranged in a uniform pattern with a majority of the apertures being substantially equidistant to at least three other apertures and the plurality of oxidant apertures of the second sorbent getter are arranged in a similar uniform pattern offset from the uniform pattern of first sorbent getter, such that the plurality of oxidant apertures of the second sorbent getter are offset from the plurality of oxidant apertures of the first sorbent getter.