Bed plate for a fluidized bed apparatus and a method for making the same
AssigneeNiro Holding A/S
InventorsMogens Christensen, Benny Madsen, Mikael Bonde
Life of this patent
Estimating the term…
Abstract
A bed plate (13) for a fluidized bed apparatus is made from a plate (23) from sheet metal and comprises openings (22) for fluidizing air or gas of the so-called "gill-type". In order to reduce or prevent fall-through of product, at least one of the edge portions (24,34) defining the opening (22) has been deformed so as to increase the extension thereof along the plane of the bed plate, and so as to thereby reduce or eliminate the orthographic projection on said plane of the opening (22). Such deformation may comprise compression and/or stretching. The edge portion or portions (24,34) are preferably deformed to such an extent that a partial overlap is obtained.
Claims23
A fluidized bed apparatus comprising
- a bed plate (13) which is made from sheet metal, defining a first general side surface and having a plurality of gas distributing openings (22) formed therein, each of said openings being defined between first and second opposite edge portions (24,34), of which at least the first edge portion (24) has been pressed out from said general side surface,
- means (12,14) for passing gas upwardly through the openings (22) of the bed plate (13) for fluidizing a powdered or particulate product (P) thereon,
- means (16) for supplying powdered or particulate product to the bed plate, and
- means (17,19) for removing fluidized product therefrom, characterized in that the thickness of at least part of at least one of said first and second edge portions (24,34) has been reduced so as to increase the extension thereof along said first general side surface, and so as to thereby reduce or eliminate the orthographic projection on said first general side surface of the opening defined between said first and second edge portions.
Dependencies are inferred from the claim text.