method and device for treatment or to use a heissgasstromes

摘要

A method and apparatus for cooling hot gas in a reactor (10) which is provided with a mixing chamber (12) for hot gas and a chamber encompassing a bubbling fluidized bed (11) in the lower section of the reactor, a riser (14) in the middle section, a gas outlet (18) in the upper section of the reactor, and heat transfer surfaces for recovering heat from solid particles. The hot gas is introduced through the mixing chamber (12) into the lower section of the reactor. In the mixing chamber (12) solid particles are supplied to the hot gas for cooling the gas. The gas containing solid particles is conveyed into a separator, where a portion of the solid particles is separated from the gas and flows into the fluidized bed (11). From the separator, the gas is conveyed through the riser into particle separators (17) and, when purified, further out of the reactor (10). The solid particles separated in the particle separator (17) are returned to the lower section of the reactor. From the fluidized bed (11), cooled solid particles are conveyed to the mixing chamber (12) for cooling of hot gas. IMAGE