Ein Festoxid-Brennstoffzellenstapel

摘要

A solid oxide fuel cell stack (10) comprises a plurality of first modules (24) and a plurality of second modules (26) stacked alternately. Each first module (24) comprises a first distribution member (28) which defines internal passages (30) for the supply of a first reactant to the fuel cells (22). The first distribution member (28) is enclosed by a porous support structure (36) which carries the fuel cells (22) on its two parallel surfaces. A plurality of passages (38) are defined between the porous support structure (36) and the first distribution member (28) which distribute and remove the first reactant from the anodes (40). Each second module (26) comprises a second distribution member (54) which defines internal passages (56) for the supply of a second reactant to the fuel cells (22). The passages (30) in the first distribution member (28) contain a catalyst (74) for steam reforming the fuel. The catalyst (74) is in intimate thermal contact with the fuel cells (22). Additionally a low temperature adiabatic prereformer (66) supplied with hydrocarbon fuel prereforms the fuel and supplies it to the passages (30).