Circulating fluidized bed boiler

Abstract

The invention comprises a circulating fluidized bed boiler having a vertical combustion chamber and a convection part which at least partly are formed by tube walls, and a horizontal cyclone separator, the gas inlet channel of which is connected to the upper part of the combustion chamber and a return channel for solids to the lower part of the combustion chamber. In order to accomplish a compact construction, the cyclone separator has been located on top of the combustion chamber and two opposite tube walls of the combustion chamber and possibly also one tube wall of the convection part have been used to form the cyclone separator.

Dependencies are inferred from the claim text.