Leijukattila ja sen arinaelementti

摘要

A fluidized bed boiler comprises a furnace (1) whose lower part is equipped with a grate (2) comprising means (4) for supplying fluidizing air into the furnace. The furnace also comprises at least one heat transfer surface (6) extending across the furnace and comprising elongated heat transfer tubes (6a) on top of each other. The heat transfer surface (6) is supported on the grate (2) from underneath, substantially over its whole length, in the section extending across the furnace (1).