| (11) | EP 1 857 738 A3 |
(12) | EUROPEAN PATENT APPLICATION |
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(54) | A partition wall structure of a furnace |
(57) A fluidized bed boiler, which comprises at least a furnace (1) defined by walls (11, 12, 13, 14), a grate (15) and a roof (16), as well as a bed ash cooler (18). In addition, the fluidized bed boiler comprises at least a primarily vertical partition wall (17) between the grate (15) and the roof (16), and at least one of the walls (181, 182) of the bed ash cooler (18) is formed of a part of the partition wall.
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