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A fluid bed dryer for processing a particulate material includes a series of chambers separated by longitudinally extending common walls and connected by turn-around sections to provide a serpentine path for the material. Each turn-around section is open to adjacent chambers at one end of one of the

A fluid bed dryer for processing a particulate material includes a series of chambers separated by longitudinally extending common walls and connected by turn-around sections to provide a serpentine path for the material. Each turn-around section is open to adjacent chambers at one end of one of the common walls to receive and turn particulate material distributed across the width of one of the chambers through an arcuate path and deliver the material to the other chamber. Each of the chambers and turn-around sections have a base including a number of gas introduction openings oriented to introduce gas in a specific direction to fluidize and move the particulate material in that direction. The gas introduction openings in the turn-around sections are oriented to successively receive and turn incremental vertical columns of the particulate material in accordance with the distance each incrmental vertical column is spaced from the common wall.

대표청구항 ▼

A fluid bed dryer for processing a particulate material comprising: a housing providing a series of chambers with adjacent ones of said chambers separated by a longitudinally extending common wall and connected by a turn-around section to provide a serpentine path leading from an entrance end of a f

A fluid bed dryer for processing a particulate material comprising: a housing providing a series of chambers with adjacent ones of said chambers separated by a longitudinally extending common wall and connected by a turn-around section to provide a serpentine path leading from an entrance end of a first one of said chambers to an exit end of a last one of said series of chambers, each turn-around section being open at one end of one of said common walls to the adjacent chambers separated by said common wall and serving to receive and turn particulate material distributed across the width of one of said chambers through an arcuate path of 180°and deliver said material to the other said chamber, each of said chambers and turn-around sections having a base including at least one bottom plate with a plurality of gas introduction openings distributed across each plate and oriented to introduce gas into said chamber in a specific direction to fluidize and move a particulate material in said direction, said gas introduction openings in each of said chambers being oriented to uniformly fluidize and move said particulate material in a direction parallel to said common wall and said gas introduction openings in each turn-around section being oriented to successively receive and turn incremental vertical columns of said particulate material with each incremental vertical column of said particulate material received and turned successively in accordance with the distance each incremental vertical column is spaced from said common wall, a plenum chamber for providing pressurized gas beneath each bottom plate, and a source of pressurized gas connected to each said plenum chamber.