초록 ▼

The apparatus comprises a process vessel, containing a process bed of fluidized particles, having a first submerged port at a first end and a second submerged port at a second end. Both ports are inclined in the same sense so that particles leave the second end of the bed at a higher level than they

The apparatus comprises a process vessel, containing a process bed of fluidized particles, having a first submerged port at a first end and a second submerged port at a second end. Both ports are inclined in the same sense so that particles leave the second end of the bed at a higher level than they enter the first end. Fluidized bed material entering the second port becomes defluidized and slides down the port, optionally with the assistance of a fluid injected into the port. The first port conducts particles into the process bed from a second fluidized bed and the second port conducts particles out of the process bed (e.g. into the second bed). The process bed rests on a fluid distributor having a horizontal first part adjoining, and no higher than the level of, the lower end of the first port and a horizontal second part adjoining, and at the level of, the second port, there being a vertical step connecting the first and second distributor parts at a location between the first and second ports. In operation, particles at the bottom layers of the process bed are transferred relatively rapidly from the first port to the second port, while particles at higher levels in the bed have relatively prolonged residence times in the bed.

대표청구항 ▼

Apparatus comprising a fixed vessel, wherein the vessel comprises: (a) outer walls; (b) inner wall means which define at least two compartments within the vessel, wherein said inner wall means comprises at least one dividing wall, each said dividing wall extending inwardly from an outer wall towards

Apparatus comprising a fixed vessel, wherein the vessel comprises: (a) outer walls; (b) inner wall means which define at least two compartments within the vessel, wherein said inner wall means comprises at least one dividing wall, each said dividing wall extending inwardly from an outer wall towards the interior of the vessel to define a discharge end of a first compartment on one side of the dividing wall and a receiving end of a second compartment on the other side thereof; (c) at least one distributor for distributing fluidizing fluid into the bottom of each compartment for fluidizing a bed of fluidizable particles which, when present, is supported above and bounded by said distributor; (d) each distributor comprising a substantially horizontal first distributor portion extending, at a first level, from the receiving end of the respective compartment to an edge region of the distributor portion at a location part-way towards the discharge end of the compartment; a substantially horizontal second distributor portion extending at a second level, higher than the said first level, from the discharge end of the compartment to an edge region of the second distributor portion which is located substantially vertically above the said edge region of the first distributor portion; a substantially vertical step connecting the edge regions of the first and second distributor portions; and a plenum defined beneath each distributor portion for the supply of fluidizing fluid to each distributor portion; (e) said at least one dividing wall defining at least part of at least one particles-transfer port means which slopes downwardly from an entrance-opening on said one side of the dividing wall to an exit-opening on the other side thereof, the bottom of the port means on the said other side of the dividing wall being no lower than the said first level.