Circulating fluidized bed reactor device

An installation of a circulating fluidized bed reactor, comprising at least two coupled reactor devices, each one of which comprises a reactor chamber delimited horizontally by walls, a centrifugal separator and a back pass for heat recovery, means for introducing a fluidizing gas into the reactor chamber and for maintaining a fluidized bed of particles in said chamber, means for transferring gas to be dedusted from the reactor chamber into the separator, means for discharging separated particles from the separator and means for transferring dedusted gas from the separator into the back pass, wherein, in each reactor device, the back pass has a common wall with the reactor chamber and the separator has a side wall which is a common wall with a side wall of the back pass.

A circulating fluidized bed reactor device comprising a reactor chamber delimited horizontally by walls, a centrifugal separator and a back pass for heat recovery, the reactor device comprising means for introducing a fluidizing gas into the reactor chamber and for maintaining a fluidized bed of particles in said chamber, means for transferring gas to be dedusted from the reactor chamber into the separator, means for discharging separated particles from the separator and means for transferring dedusted gas from the separator into the back pass, the separator having a side wall which is a common wall with a side wall of the back pass, wherein the means for transferring dedusted gas from the separator into the back pass comprise an opening formed in a side wall of the back pass which is an upper extension of the common wall between the separator and the back pass.

A circulating fluidized bed reactor device comprising a reactor chamber delimited horizontally by walls, a centrifugal separator and a back pass for heat recovery, the reactor device comprising means for introducing a fluidizing gas into the reactor chamber and for maintaining a fluidized bed of particles in said chamber, means for transferring gas to be dedusted from the reactor chamber into the separator, means for discharging separated particles from the separator and means for transferring dedusted gas from the separator into the back pass, the separator having a side wall which is a common wall with a side wall of the back pass, wherein the side wall which is common between the separator and the back pass comprises heat exchange tubes that are connected to a series of heat exchange tubes in other walls of the separator and tubes that are connected to a series of heat exchange tubes in other walls of the back pass, the tubes of the two series being intercalated in said common side wall.

A circulating fluidized bed reactor device comprising a reactor chamber delimited horizontally by walls, a centrifugal separator and a back pass for heat recovery, the reactor device comprising means for introducing a fluidizing gas into the reactor chamber and for maintaining a fluidized bed of particles in said chamber, means for transferring gas to be dedusted from the reactor chamber into the separator, means for discharging separated particles from the separator and means for transferring dedusted gas from the separator into the back pass, the separator having a side wall which is a common wall with a side wall of the back pass, wherein the means for transferring gas to be dedusted from the reactor chamber into the separator comprise an acceleration duct which extends between a wall of the reactor chamber in which an outlet for gas to be dedusted is formed and a wall of the separator in which an inlet for gas to be dedusted is formed, said acceleration duct having a cross section which decreases in a direction going from said outlet to said inlet.