SOLID OXIDE FUEL CELL STACK ASSEMBLY FOR DIRECT INJECTION OFCARBONACEOUS FUELS

摘要

An electrochemical system includes a stack (12) of cells (10) along a centerline (14). The cells (10) surround a fuel mixing chamber (18) and an oxidizing chamber (38) surrounds the stack (12). Separator discs (22a) and (22b) separate the cells (10). Each cell includes a solid oxide electrolyte (24) fuel electrode (26) and oxygen electrode (32). Gas diffusion layers (28 ) and (30) are provided to the electrodes. Unsealed fuel flow layers (40) and (42) are provided adjacent respective end plates (44) and (46) to allow fuel gas to exit the stack (12). The stack further includes a thermal insulation unit (48) having a fuel feed tube (50) disposed therein and sealed via a sealing tube (52) and disc (54).