Fluidized bed hopper

Details Fluidized bed hopper Fluidized bed hopper

1987-07-08

1989-12-19

Bennet, Henry A.

Drying and gas or vapor contact with solids

Apparatus

With apparatus using centrifugal force

34 10, F26B 1700

Patent

active

048873632

ABSTRACT:
A fluidizing bed hopper having a plenum chamber and an air pervious fluidizing bed plate defining the top surface of that plenum chamber. The fluidizing bed plate is of two ply and comprises a first ply of rigid porous structure and a second ply of non-woven filter media. In the preferred embodiment, the first ply of rigid porous structure comprises spherical glass beads bonded together to form a network of interstitial pores of substantially uniform size. The filter media preferably comprises point sealed, thermally bonded, non-woven polypropylene fibers.

REFERENCES:
patent: 3480265 (1969-11-01), Deve
patent: 3829983 (1979-08-01), White
patent: 3925024 (1975-12-01), Hollingsworth et al.
patent: 4115500 (1978-09-01), Voegeli
patent: 4120680 (1978-10-01), Cross
patent: 4478620 (1984-10-01), Tamura
patent: 4493364 (1985-01-01), Macriss et al.
patent: 4615649 (1986-10-01), Sharpless
Brochure entitled "Viledon Filter" of Carl Freudenberg, Viledon Industrielle Vliesstoffe, 9/85.
Brochure entitled "Technical Data-EP Brand Porous Structure" of EP International, 9/85.

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