초록 ▼

The invention relates to a method and a device for the metered removal of a fine to coarse-grained solid matter or a solid matter mixture from a storage container, comprising a device for forming a fluidized bed in the discharge region or in a metering chamber of the metering container, wherein flui

The invention relates to a method and a device for the metered removal of a fine to coarse-grained solid matter or a solid matter mixture from a storage container, comprising a device for forming a fluidized bed in the discharge region or in a metering chamber of the metering container, wherein fluidization that is as optimal as possible is to be created in the lower region of such a receiving or metering container while avoiding any additional systems, mechanical elements, or extensive installations. This is achieved according to the method in that a gas is additionally introduced in the region of the metering chamber bottom for forming a fluidized bed that loosens the solid matter, and a gas is introduced via swirl nozzles for bringing about the rotation of the fluidized bed.

대표청구항 ▼

1. Method for metered removal of a fine-grained to coarse-grained solid material or solid material mixture from a storage container, having a device for forming a fluidized bed in the discharge region or in a metering chamber of the storage container, wherein a gas forming a first gas flow is additi

1. Method for metered removal of a fine-grained to coarse-grained solid material or solid material mixture from a storage container, having a device for forming a fluidized bed in the discharge region or in a metering chamber of the storage container, wherein a gas forming a first gas flow is additionally introduced in the region of the metering chamber bottom, to form a fluidized bed that loosens up the solid material, and a gas forming a second gas flow is additionally introduced by way of swirl nozzles vertically passing through the metering chamber bottom, in order to put the fluidized bed into rotation, whereby the first gas flow is separate from the second gas flow, and whereby the solid material is drawn off from the metering chamber toward the bottom, in the direction of gravity. 2. Method according to claim 1, wherein the gas stream that produces the swirl is also introduced tangentially or at an angle relative to the storage container wall and/or at an angle relative to the horizontal plane. 3. Method according to claim 2, wherein the tangential angle is set at between 0° and 80°, and the angle assumed relative to the horizontal is set at between 0° and 45°. 4. Method according to claim 1, wherein the velocity achieved over the gas feed, with reference to the cross-section of the fluidized region in the storage container, is set to between 0.5 multiple and 10 multiples of the minimal fluidization velocity of the solid material, preferably between 1 multiple and 5 multiples. 5. Device for metered removal of fine-grained to coarse-grained solid material or solid material mixtures from a storage container having at least one metering chamber that lies at the bottom in the direction of gravity, having gas feed openings suitable for injecting a first gas flow to form a fluidized bed in the at least one metering chamber bottom, wherein aside from the gas feed devices that serve for fluidization, additional swirl nozzles vertically passing through the at least one metering chamber bottom that impact the at least one metering chamber via injecting a second gas flow into the at least one metering chamber and an outlet opening that is directed downward in the direction of gravity are provided, and wherein the first gas flow is separate from the second gas flow. 6. Device according to claim 5, wherein the swirl nozzles are also provided in the cylindrical wall of the metering chamber. 7. Device according to claim 5, wherein the swirl nozzles have a tangential exit or another exit angle of the gas stream with reference to the chamber wall and/or an exit direction set at an angle with reference to the horizontal surface, whereby the angle, in each instance, lies in the range between 0° and 80°. 8. Device according to claim 5, wherein the at least one metering chamber comprises a first metering chamber in the region of the container bottom and a second metering chamber in the region of the container bottom, wherein the first metering chamber comprises first gas feed openings, first swirl nozzles, and a first cylindrical wall, and wherein the second metering chamber comprises second gas feed openings, second swirl nozzles, and a second cylindrical wall. 9. Device according to claim 5, wherein the metering chamber bottom is configured in funnel shape, with a work angle in a range of 0° to 60°, relative to the horizontal. 10. Device according to claim 9, wherein the work angle is in a range of 10° to 20° relative to the horizontal.