| 摘要 |
An apparatus for carrying out a physical and/or chemical process in particular a heat exchanger. The apparatus comprises a reservoir provided with at least one riser in which a stream of particles in a fluid, moves between an riser inlet and riser outlet to define a first flow path, wherein the riser inlet is in open communication with a box wherein at least one distribution plate is arranged in the box for supporting a fluidized bed of particles maintained in a quasi -stationary condition. The riser outlet is coupled via at least one separator to at least one downcomer for feeding particles back from the riser outlet to the box, in which separator the stream of particles in a fluid exiting from the riser outlet is separated into a stream of particles and a stream of fluid, wherein in the downcomer, the stream of particles moves between a downcomer inlet and a downcomer outlet to define a second flow path, wherein the downcomer outlet is coupled to the box, wherein the downcomer includes an entraining device to entrain the stream of particles in the second flow path. |
