Spray drying apparatus with a plenum chamber below a perforated bottom of a spray drying chamber
AssigneeGEA Process Engineering A/S
InventorsMads Lund Steffensen, Kristian Mark Ingvorsen, Henrik Schwartzbach
Life of this patent
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Abstract
A spray drying apparatus has a spray drying chamber; a liquid feed atomizer; a drying gas disperser; a perforated bottom; and a plenum chamber with an outlet below the perforated bottom. At least one guide plate is provided in the plenum chamber to direct gas, which is passing through the perforated bottom into the plenum chamber, towards the bottom of the plenum chamber. The guide plates have lower edges extending on average down to at least half-way between the perforated bottom of the spray drying chamber and the bottom of the plenum chamber.
Claims19
A spray drying apparatus comprising:
- a spray drying chamber;
- a liquid feed atomizer;
- a drying gas disperser;
- a perforated bottom;
- at least one plenum chamber below the perforated bottom;
- and
- an outlet of said plenum chamber,
- wherein said plenum chamber has
- a perforated ceiling, which is provided by an underside of said perforated bottom, and
- a bottom,
- wherein at least one guide plate is provided in the at least one plenum chamber to direct gas, which is passing through the perforated bottom into the plenum chamber, towards the bottom of the plenum chamber,
- said at least one guide plate having a lower edge and said at least one guide plate having a longitudinal extent in a longitudinal direction of said at least one guide plate, said at least one guide plate extending across, and thereby at an angle larger than zero relative to an outlet direction towards the outlet,
- said at least one guide plate throughout the longitudinal extent thereof extending on average down to at least half-way between the perforated ceiling and the bottom of the plenum chamber.
Dependencies are inferred from the claim text.