Abstract: A method and apparatus for power and/or heat generation from fuels. The fuel is fed to a combustion chamber and a pressurized gaseous oxidizing agent is fed to the combustion chamber to fire the fuel in a fluidized bed. The smoke gases coming from the fluidized bed are cooled, purified in a purifier such as an electrostatic filter, reheated in a heat exchanger immersed into the fluidized bed and fed to the gas turbine. The exhaust gas from the gas turbine is fed to a recuperator for gaining the residual thermal energy and is then released through a chimney. The cooling of the smoke gas can be achieved by adding compressed air to the smoke gas stream or by introduction, e.g. into the upper half of the combustion chamber of a water or steam operated heat exchanger.

Abstract: In a method for decreasing the heat, impulse and material exchange in the direct vicinity of the walls of fluidized bed reactors, the flow resistance to the fluid (agitating medium) conducted through the fluidized bed will be increased in the vicinity of the walls to such an extent that the fluidized bed does not do much agitating in this region; moreover the components sticking out of the interior walls of the reactor serve to extend the rib-shapes from the wall projecting into the reaction space or parallel to the reactor wall while forming a slit with the latter. The components can be pre-fabricated segments and the distance of the annular components in the direction of flow of the fluid should at most be about half as great as the height of the ribs lateral thereto.