Spray drying plant with by-pass nozzle
AssigneeAPV Anhydro AS
InventorsAnders Hallstrom, Nicolaj Stahnke, Henrik S.o slashed.nderby
Life of this patent
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Abstract
A spray drying system having a whirl chamber nozzle with a bypass and for atomization of a liquid. The whirl chamber of the nozzle has a central discharge orifice, from which a ring-shaped bypass passage extends radially outwards. This ensures that substantially no air enters the bypass from the whirl chamber, while providing acceptably low flow growth values.
Claims5
A spray drying system having a whirl chamber nozzle for atomization of a liquid which is introduced tangentially into the whirl chamber of the nozzle at its outer periphery, said whirl chamber nozzle comprising a bypass which extends away from the whirl chamber via a central discharge orifice, wherein said bypass is provided as a ring-shaped slot extending axially away from said central discharge orifice with an increasing cross-sectional area, said ring-shaped slot also extending radially outwards with its outermost periphery extending to a point in the vicinity of the outer periphery of the whirl chamber.
A method of spray drying a liquid, which method comprises the use of a whirl chamber nozzle for atomization of a liquid which is introduced tangentially into the whirl chamber of the nozzle at its outer periphery, said whirl chamber nozzle comprising a bypass which extends away from the whirl chamber via a central discharge orifice, wherein said bypass is provided as a ring-shaped slot extending axially away from said central discharge orifice with an increasing cross-sectional area, said ring-shaped slot also extending radially outwards with its outermost periphery extending to a point in the vicinity of the outer periphery of the whirl chamber.
Dependencies are inferred from the claim text.