Abstract: An apparatus for the treatment of at least one of solids and gases includes a fluidized-bed reactor configured to fluidize the solids using fluidizing gas and to at least one of thermally and chemically treat the solids. A centrifugal separator is configured to separate the fluidizing gas and the solids from each other. A transfer duct connects the fluidized-bed reactor and centrifugal separator to each other. The transfer duct has a trapezoidal cross-section in a vertical direction and in a horizontal direction. The transfer duct branches off from the fluidized bed reactor with a cross-section having a horizontal dimension that is greater than a vertical dimension. The cross-section of the transfer duct expands downwards in the vertical direction from the fluidized-bed reactor to the centrifugal separator. The cross-section of the transfer duct tapers in the horizontal direction from the fluidized-bed reactor towards the centrifugal separator.

Abstract: An apparatus for the treatment of at least one of solids and gases includes a fluidized-bed reactor configured to fluidize the solids using fluidizing gas and to at least one of thermally and chemically treat the solids. A centrifugal separator is configured to separate the fluidizing gas and the solids from each other. A transfer duct connects the fluidized-bed reactor and centrifugal separator to each other. The transfer duct has a trapezoidal cross-section in a vertical direction and in a horizontal direction. The transfer duct branches off from the fluidized bed reactor with a cross-section having a horizontal dimension that is greater than a vertical dimension. The cross-section of the transfer duct expands downwards in the vertical direction from the fluidized-bed reactor to the centrifugal separator. The cross-section of the transfer duct tapers in the horizontal direction from the fluidized-bed reactor towards the centrifugal separator.