Fluidized-bed device, method for drying and / or cooling goods, and dried and / or cooled product

Abstract

The invention relates to a fluidized-bed device (101) and to a method for drying and / or cooling goods (115), the fluidized-bed device (101) comprising a housing (103), at least one inlet (107) and one discharge (109) for the goods (115), and at least one gas outlet (139), wherein: at least one inflow base (119) through which gas can flow from below is located in the housing (103), and at least a first fluidized-bed chamber (121-126, 171-173) is located above the at least one inflow base (119), so that a fluidized bed comprising the goods (115) to be dried and / or to be cooled can be formed in the at least first fluidized-bed chamber (121-126, 171-173) by means of the gas (137) which can flow through; the at least first fluidized-bed chamber (121-126, 171-173) is an annular structure in top view, and the fluidized-bed device has at least one rotatable pushing device (151) for pushing the goods (115) to be dried and / or to be cooled along the annular structure so that a fluidized bed (129) that forms can be guided along the annular structure; the fluidized-bed device (101) has a first and a second gas inlet (131, 132), and a first gas-chamber segment (141) is located between the first gas inlet (131) and the at least one inflow base (119), and a second gas-chamber segment (141) is located between the second gas inlet (132) and the at least one inflow base (119). The invention also relates to a dried and / or cooled product.

Description

[0001] Fluidized bed device and method for drying and / or cooling a product and dried and / or cooled product

[0002]

[0001] The invention relates to a fluidized bed device for drying and / or cooling a material, wherein the fluidized bed device has a housing, at least one inlet for the material to be dried and / or cooled, an outlet for the dried and / or cooled material, at least one first gas inlet for supplying a gas for drying and / or cooling the material to be dried and / or cooled, and at least one gas outlet, wherein at least one flow plate is arranged in the housing, through which the gas can flow from below, and above the at least one flow plate, at least one first fluidized bed chamber is arranged in the housing, so that a fluidized bed with the material to be dried and / or cooled can be formed in the at least first fluidized bed chamber by means of the gas flowing through it.Furthermore, the invention relates to a method for drying and / or cooling a product in a continuously rotating fluidized bed and a dried and / or cooled product.

[0003]

[0002] Fluidized bed systems are used in various technical processes, for example in drying processes, chemical reactions and for classification, in which solids are mixed with gases,

[0004] Liquids or other solids are brought into close contact. They are usually considered to be...

[0005] Fluidized bed reactors utilize closed vessels with a circular cross-section. A disadvantage of these reactors in drying processes is that edge effects occur on the inner walls of the fluidized bed reactor, and an inhomogeneous temperature distribution and / or density differences arise across the vessel's cross-section, leading to inhomogeneous drying of the solid particles. A particular problem with gas-solid fluidized beds is the chaotic flow pattern across the surface. This causes particles to be dried and / or cooled to remain in the individual zones of the chaotic flow for varying lengths of time. This results in over-drying or under-cooling and / or insufficient drying and / or cooling.The dried and / or cooled particles leaving such a continuously operated fluidized bed reactor therefore do not have homogeneous properties, for example with regard to temperature and / or humidity, but only correspond to the properties to be set on average.

[0006]

[0003] DE 10 2014 004 815 discloses a fluidization apparatus with a vortex chamber and a rotary dryer star, which is rotatably arranged in the vortex chamber and has a central cone with partitions arranged thereon, which extend over the entire height of the vortex chamber. An outer shell of the vortex chamber has a solid particle inlet unit and a solid particle outlet unit. At the bottom, the fluidization apparatus has a single distribution chamber, which is separated from the vortex chamber arranged above it by means of a flow plate.

[0007]

[0004] DE 10 2014 106 122 A1 describes a fluidized bed evaporation dryer with a feed device comprising a screw conveyor, by which the material to be dried, in the form of pressed pulp, is introduced into a process chamber in a loosened state. A fluidized bed can be generated in the process chamber by flowing superheated steam through an inlet plate to dry the pulp. Vertical walls are arranged above the inlet plate to form cells in the process chamber. A flow from the inlet cell to the outlet cell is effected via a plurality of flow guides, which are formed by nozzles on the inner circumference of the annular process chamber and guide plates between the nozzles.

[0008]

[0005] The object of the invention is to improve the state of the art.

[0009]

[0006] The problem is solved by a fluidized bed device for drying and / or cooling a material, wherein the fluidized bed device has a housing, at least one inlet for the material to be dried and / or cooled, an outlet for the dried and / or cooled material, at least one first gas inlet for supplying a gas for drying and / or cooling the material to be dried and / or cooled, and at least one gas outlet, wherein at least one flow plate is arranged in the housing, through which the gas can flow from below, and above the at least one flow plate, at least one first fluidized bed chamber is arranged in the housing, so that a fluidized bed with the material to be dried and / or cooled can be formed in the at least first fluidized bed chamber by means of the gas flowing through it.wherein the at least first fluidized bed chamber is formed in a ring shape in a top view and the fluidized bed device has at least one rotatable sliding device for sliding the material to be dried and / or cooled along the ring shape, so that a fluidized bed forming can be guided along the ring shape and homogeneous drying and / or cooling of the material in the fluidized bed is possible, wherein the fluidized bed device has a second gas inlet and a first gas chamber segment is arranged between the first gas inlet and the at least one flow plate and a second gas chamber segment is arranged between the second gas inlet and the at least one flow plate.

[0010]

[0007] Thus, a continuously operable fluidized bed device is provided in which a temporally and spatially defined fluidized bed can be built up and operated to ensure homogeneous, targeted drying and / or cooling of the material and thus homogeneous product properties. Consequently, over-drying or under-cooling of the material is avoided, and the dried and / or cooled material exhibits homogeneous particle properties for each individual particle and not just on average across all particles.

[0008] It is particularly advantageous that, in addition to the usual upward flow of the gas through the at least one inlet plate to form the fluidized bed, the formed, fluidizing fluidized bed is moved not only in the vertical flow direction but also in the horizontal direction along the ring shape of the fluidized bed device by means of the rotatable sliding device.These two different flow and / or movement directions result in improved distribution and mixing of the material particles, ensuring that the residence time in different zones of the fluidized bed is at least approximately the same, thus guaranteeing homogeneous drying and / or cooling. The additional circulating, rotating movement of the material to be dried and / or cooled and / or the fluidized bed itself, via the rotating sliding mechanism, also prevents uncontrolled zone formation within the fluidized bed device. In particular, edge effects on the inner walls of the fluidized bed device are avoided by the continuous movement of the particles and / or the fluidized bed. Furthermore, the upward flow of the gas, and thus the vertical flow and / or movement direction, can be specifically and / or differently adjusted via the at least two gas inlets.This allows the respective gas properties and / or process conditions to be adapted to the progressing drying process, for example along the ring shape, via the at least two gas inlets with associated gas space segments. Two different gases can also be supplied via the at least two gas inlets.

[0011]

[0009] A key aspect of the invention is to design the housing, and thus the fluidized bed reactor, at least in the area of ​​the fluidized bed formation, in a ring-shaped, circumferential form, and to selectively move the material to be dried and / or cooled and / or the fluidized bed along this ring shape by means of the rotatable sliding device, thereby additionally utilizing a movement in a horizontal direction with a different orientation than the known vertical upward flow due to the gas supply. The two different directions of movement acting on the material to be dried and / or cooled and / or the fluidized bed formation prevent a homogeneous distribution of the material particles and consequently different residence times within the fluidized bed, both spatially and temporally.This ensures homogeneous particle properties of the material, such as a uniform temperature and / or humidity, due to the homogeneous distribution of the material in the fluidized bed.

[0012]

[0010] It is particularly advantageous that the material to be dried and / or cooled, and thus the resulting fluidized bed, can be guided and adjusted both temporally and spatially by means of the rotatable sliding device and / or the at least two gas inlets with subsequent gas chamber segments. In particular, the at least one fluidized bed chamber can be operated with at least two successive, different zones and / or with different process conditions thanks to the at least two gas inlets and the at least two gas chamber segments.Here, at least two successive zones and / or process conditions are arranged and / or delimited sequentially, particularly in the horizontal direction of movement, with the fluidized bed being formed in each case by the gas entering the fluidized bed chamber from below through the at least one inlet plate via the first gas inlet with the subsequent first gas chamber segment and the second gas inlet with the subsequent second gas chamber segment. In addition to an optimal, uniform distribution of the gas in front of the at least one inlet plate, separate gas properties can be set and adjusted in each gas inlet with the subsequent gas chamber segment.

[0013]

[0011] The following terms shall be explained:

[0014]

[0012] A “fluidized bed” (also called a “fluidized layer”) is, in particular, a packed bed of material and / or solid particles, wherein the packed bed is brought into a fluidized state by an upward flow of a fluid. Thus, the fluidized bed expands in the direction of the upward flow, and the particles are spaced further apart from each other compared to a packed bed without fluid flow. The height of the resulting fluidized bed preferably corresponds to at least the height of a slide of the sliding device. For example, the resulting fluidized bed can have a height of 20 to 30 cm. Advantageously, the height of the fluidized bed in the fluidized bed device can be smaller than the usual heights in fluidized beds in conventional fluidized bed reactors with a circular vessel cross-section.In the area of ​​the fluidized bed and / or the rotatable sliding device, the fluidized bed reaction chamber preferably does not have any further internal components.

[0015]

[0013] A “fluidized bed device” is, in particular, a device for forming a fluidized bed. The fluidized bed device has, in particular, at least one housing and / or fluidized bed reactor. The fluidized bed device can also have several fluidized bed reactors, for example, arranged in parallel or in series. The fluidized bed device is used, in particular, for drying and / or cooling a material and thus, in particular, uses a gas as the fluid, while the material is preferably in the form of solid particles. However, the fluidized bed device can, of course, also use a liquid or a supercritical fluid instead of a gas and thus, instead of drying and / or cooling, can also be used for other technical processes, such as granulation, mixing of different particles, and / or for chemical reactions.Accordingly, the material to be dried and / or cooled does not necessarily have to consist of solid particles; it can also be in a gel-like or liquid phase, for example. The fluidized bed system can also be used, in particular, for the post-drying of a pre-dried material, for example, by means of an upstream spray dryer or drying tower. In principle, the fluidized bed system can be used in any industrial sector, for example, for the treatment of semi-finished products and / or products in the food and automotive industries. The fluidized bed system is specifically designed to be suitable for explosion-proof processes. However, the fluidized bed system can also be used for processes without pressure surge resistance and / or explosion protection.

[0016]

[0014] A “housing” is, in particular, a rigid shell of the fluidized bed device. The housing encloses, in particular, the at least one fluidized bed chamber and / or at least one gas chamber segment. The housing surrounds, in particular, a fluidized bed reactor. In addition to a protective function, the housing can also be designed as a structural component and, for example, serve to support a shaft of the rotatable sliding device. Likewise, the housing can be designed as a mounting structure for other internal components. The housing can, for example, have a diameter in the range of 1 m to 10 m, preferably in the range of 4 m to 5 m. The housing can have a dished end as a lid. Instead of a dished end lid and / or lid, the lid can also be manufactured by any other related rounded shape, achieving a corresponding strength.

[0015] An “inlet” is, in particular, an opening that penetrates a wall thickness of the housing for introducing the material to be dried and / or cooled into the interior of the housing and thus into the at least first fluidized bed chamber. The inlet can, for example, be designed as a pipe or feed hopper. The inlet enables controlled introduction of the material to be dried and / or cooled into the at least first fluidized bed chamber. For example, the material to be treated can fall gravimetrically through the inlet into the interior of the housing and thus into the fluidized bed device, or it can be blown in. The inlet can also be directly connected to a device of a preceding process, for example, a spray dryer. The inlet can, in particular, be arranged on the outside of the housing, near the central axis of the housing, or in between. Preferably, the inlet is arranged on the lid and / or a dished end of the housing.The fluidized bed device can also have two or more inlets. Preferably, the inlet(s) are arranged such that the material to be dried and / or cooled enters the first fluidized bed chamber via a short path and / or as directly as possible.

[0017]

[0016] A “discharge” is, in particular, a device by means of which the dried and / or cooled material is conveyed from the interior of the fluidized bed device and / or the housing to the outside. The discharge has, in particular, an opening that penetrates a wall thickness of the housing. The discharge has, in particular, a pipe for conveying the treated material. The discharge is, in particular, designed such that the quantity of dried and / or cooled material to be conveyed by means of the discharge is adjustable and / or controllable.

[0018]

[0017] A “gas inlet” is, in particular, a passage through a wall thickness of the housing and / or the fluidized bed device through which a gas can be supplied into the interior of the housing and / or the fluidized bed device. The gas inlet is, in particular, arranged below the at least one flow plate and the at least first fluidized bed chamber or an associated fluidized bed chamber. Preferably, the fluidized bed device has several gas inlets.

[0019]

[0018] A “gas outlet” is, in particular, a passage through a wall thickness of the housing through which the gas leaves the interior of the housing and / or the fluidized bed device after the fluidized bed has formed. The gas outlet is preferably located on the top and / or the lid of the housing. The fluidized bed device can also have two or more gas outlets. The dust-containing gas, which was required to form the fluidized bed, is in particular extracted and / or blown out via the gas outlet and / or multiple gas outlets. The at least one gas inlet and the at least one gas outlet are preferably continuously permeated by the gas. Two or more gas outlets can be identical or different.

[0019] A “gas” is understood in particular to be a fluid whose particles move freely at a greater distance from one another and continuously fill an available space.The gas used can be, for example, air or an inert gas such as nitrogen. The gas can have specific properties, such as pressure, temperature, and / or humidity. The gas supplied through two or more gas inlets can also have different properties at each inlet, such as different temperatures or humidity, allowing for targeted and / or stepwise drying and / or cooling in differently configured, homogeneous fluidized bed zones and / or fluidized bed chambers and / or their zones. However, instead of a gas, the gas used can also be another fluid, such as a liquid or a supercritical fluid.

[0020]

[0020] A "flow plate" is, in particular, a component through which the gas flows in the at least one fluidized bed chamber. The flow plate has, in particular, at least one through opening and preferably a plurality of small openings. A flow plate can, for example, be a sheet with punched and / or perforated openings extending through the thickness of the sheet. However, a flow plate can also have a different type of gas-permeable structure, for example, a metal mesh and / or foam. By means of the flow plate, the gas is distributed evenly over the cross-section by flowing through its openings and then flows vertically upwards into the at least one fluidized bed chamber.Simultaneously, the at least one inlet plate separates the fluidized bed chamber located above it from a gas chamber located below it and prevents particles of the material to be dried and / or cooled from passing downwards through the inlet plate into the gas chamber located below. The at least one inlet plate can be formed in one piece or in multiple parts. Likewise, the fluidized bed device can have two or more inlet plates.

[0021]

[0021] A “fluidized bed chamber” is, in particular, a part of the internal space of the fluidized bed device and / or the housing in which a fluidized bed is formed during operation. The fluidized bed chamber is, in particular, arranged above a flow plate. The fluidized bed chamber, in particular, forms a section of a ring shape or is itself formed in a ring shape. Consequently, several successively arranged fluidized bed chambers can form a common ring shape.

[0022]

[0022] The term "ring shape" refers in particular to a circumferential, closed structure. Preferably, the ring shape has the form of a circular ring. However, the ring shape need not necessarily be circular in plan view, but can also have an elliptical, polygonal, or other circumferential shape. The ring shape has, in particular, a hole and / or a cavity in the center, which is surrounded internally by wall sections of the housing. The ring shape can also be designed as a torus and / or donut. Likewise, the ring shape can be bent and connected in a tube-like manner. Preferably, however, the ring shape is designed as a circular ring, since this allows the at least one slider of the rotatable sliding device to be moved directly along the circular path of the ring shape.In the case of a differently shaped ring, for example an elliptical shape, the movement of the at least one slider requires more complex control of its sliding motion along the changing orbital form of the elliptical ring. "Top view" refers in particular to the view from above of the at least one fluidized bed chamber. A top view is, in particular, a graphically represented, two-dimensional orthogonal projection.

[0023]

[0023] A “sliding device” is any type of device by which the material to be dried and / or cooled and / or the fluidized bed formed is pushed and / or moved along the ring shape. The sliding device has at least one holding device and / or at least one holding arm to which one or more slides are attached. The sliding device and / or holding device may also have a separate holding arm for each slide. In the case of multiple slides, the holding arm or arms are preferably arranged symmetrically. The holding arm and / or arms are preferably attached to a shaft, for example by welding, and / or supported by bearings. The shaft may be attached to the housing, for example by flanges. Preferably, the shaft extends outwards through the wall thickness of the housing and is connected there to a motor via a gearbox.An outer part of the shaft and / or the motor is / are arranged, in particular, in the cavity of the ring shape outside the housing. An electric motor is used, in particular, to drive the shaft. The sliding device includes, in particular, a rolling ball bearing. To prevent the passage of fine solids, the sliding device includes, in particular, a labyrinth seal and / or a gas-purged seal. The sliding device has, in particular, a relatively slow rotational speed, for example, in the case of an explosion-proof design, < 1 m / s. Depending on the rotational speed, the residence time of the material in the fluidized bed chamber(s) is, in particular, in the range of 1 min to 60 min.The greater the number of slides and thus the spatially distributed movement of the material to be dried and / or cooled and / or the fluidized bed along the ring shape, the more homogeneous the properties of the fluidized bed and / or the properties of the dried and / or cooled material. The sliding device can, for example, be a paddle agitator in which a centrally mounted paddle distributor arm rotates via a motor with adjustable rotational speed, and the slides arranged at its ends are moved through the fluidized bed, thereby pushing the fluidized particles in a directed manner along the ring shape and thus within the first fluidized bed chamber(s). The paddle distributor arm of the paddle agitator arm can, for example, have individual support arms arranged like spider legs, with paddles located at their lower ends.A sliding device can also be a stirrer and / or a rotating stirrer.

[0024]

[0024] A “slide” is, in particular, a component which, due to the rotation of the sliding device, pushes and / or moves the material to be dried and / or cooled and / or the fluidized bed formed along the annular shape of the at least one fluidized bed chamber. A slide also, in particular, at least partially separates two adjacent areas of the fluidized bed from one another. A slide can also be an agitator blade. The slide is, in particular, removable and replaceable. The slide can, in particular, have different materials and / or shapes. For example, the slide can be made of stainless steel and / or plastic. In cross-section, the slide has, in particular, a shape which largely fills a cross-section of the annular shape, so that a high proportion of the material and / or the fluidized bed formed is pushed and / or moved further along the annular shape in the respective fluidized bed chamber.Thus, the slide can have a square and / or rectangular surface for contact with the material and / or the fluidized bed in the direction of movement. In plan view, the slide can also have any shape; for example, it can be crescent-shaped and / or curved. The slide can have a seal at its outer edges, for example, a rubber lip, to push even fine particles along in the direction of rotation and / or to prevent passage. Preferably, the slide is designed such that it moves the material and / or the fluidized bed uniformly across the entire cross-section of its ring shape.

[0025]

[0025] The term “good to be dried and / or cooled” refers in particular to solid particles and / or solid substances and / or objects. However, the good to be dried and / or cooled can also be a liquid, such as a solution, suspension or emulsion, and / or a gel, which are treated in the at least one fluidized bed chamber for drying, cooling and / or forming particles (individual particles, agglomerates and / or granules).

[0026]

[0026] In another embodiment, the fluidized bed device has a second fluidized bed chamber, a third fluidized bed chamber, a fourth fluidized bed chamber, a fifth fluidized bed chamber and / or a sixth fluidized bed chamber and optionally further fluidized bed chambers.

[0027]

[0027] Thus, two or more fluidized bed chambers can be connected in series, arranged along the ring shape, side by side, and / or in a radial direction. This allows the individual fluidized bed chambers to be configured differently and / or operated under different process conditions, while a homogeneous flow and / or fluidized bed can be formed in each fluidized bed chamber. Furthermore, a fluidized bed chamber or further fluidized bed chambers can also have internal components to further modify the properties of the material particles, for example, to wet them, coat them, and / or to add further substances.

[0028]

[0028] A second, third, fourth, fifth, sixth and / or further fluidized bed chamber is, in principle, functionally a fluidized bed chamber as defined above. However, each fluidized bed chamber can be arranged and configured differently within the fluidized bed device. For example, one or each fluidized bed chamber can have a different length of a section of the ring shape and / or different dimensions. Thus, successive fluidized bed chambers can also each have, for example, a narrower or a wider cross-section and / or different fluidized bed heights.

[0029]

[0029] In order to optimally distribute the supplied gas over the cross-section and / or the at least one flow plate and / or to adjust separate gas properties in each case, the fluidized bed device can have a third gas inlet, a fourth gas inlet, a fifth gas inlet and / or a sixth gas inlet and optionally further gas inlets.

[0030]

[0030] The second, third, fourth, fifth and / or sixth and optionally further gas inlets are in particular gas inlets as defined above. However, the gas inlets can have different cross-sections, lengths and / or different spatial arrangements on the housing. Preferably, the fluidized bed device has an even number of gas inlets so that these can be arranged rotationally symmetrically with respect to the circumference of the ring shape.

[0031]

[0031] In a further embodiment of the fluidized bed device, a gas space segment is arranged between the respective gas inlet and the at least one flow plate.

[0032]

[0032] This allows the supplied, flowing gas to mix and distribute optimally in the respective gas space segment before it passes through the flow plate to form the fluidized bed.

[0033]

[0033] A “gas chamber segment” (also called “gas chamber”) is an interior space within the housing, which is arranged between the respective gas inlet and the at least one flow plate. The gas chamber segment can, for example, be a channel that is wider than the gas inlet. From the gas inlet, the gas chamber segment can also widen conically and / or curvedly, for example, in a semicircular cross-section, to a diameter equal to that of the flow plate arranged above it. Two or more gas chamber segments can be spaced apart from each other along the ring shape and / or in a radial direction. Two or more gas chamber segments can be of the same or different design. Thus, two or more gas chamber segments can, for example, have the same diameter or different diameters and / or the same or different interior volumes.This allows the properties of the supplied, flowing gas in each gas space segment to be further modified and / or adjusted in a targeted manner. For example, the gas in a gas space segment can be brought to a desired temperature using an indirect heat exchanger before it enters the fluidized bed chamber through the inlet plate. Consequently, two or more gas inlets with associated gas space segments can be supplied from a single gas source, and the gas properties and / or process conditions in one or more gas space segments can advantageously be subsequently modified and / or adjusted individually. To selectively adjust different process conditions, such as different temperatures, pressures, and / or humidity levels, appropriate units can be arranged at and / or within the respective gas inlet and / or gas space segment.

[0034]

[0034] In order to operate at least one fluidized bed chamber with different zones or two or more fluidized bed chambers with different process conditions, the gas chamber segments can be spatially separated from each other, so that the gas from the respective gas chamber segment can flow through the respective flow plate into one of the fluidized bed chambers.

[0035] Because the gas space segments are physically separated from each other below the at least one or more flow plates, different process conditions, such as different temperatures, pressures, and / or humidity levels of the gases in the respective gas space segments, can be used for targeted drying and / or cooling. This allows the properties of the dried and / or cooled material to be specifically influenced or adjusted. Consequently, the upward gas flow can exhibit different temperatures in a range from 0°C to 200°C and / or different humidity levels to specifically influence the properties of the material in the respective fluidized bed and / or to carry out the drying and / or cooling process in stages.Furthermore, optimal conditions can also be set for other processes carried out in the fluidized bed device in one or more fluidized bed rooms, such as wetting, coating and similar processes.

[0035]

[0036] In another embodiment of the fluidized bed device, the gas chamber segments are connected to form a gas channel, and the gas channel is formed in a ring shape in a top view.

[0036]

[0037] Thus, mixing and distribution of the gases flowing in through the gas inlets takes place not only in cross-section across the diameter of the respective flow plate, but also in the circumferential direction within the annular gas channel. Consequently, different gases or a similar gas from different upstream processes can be used to form the fluidized bed.

[0037]

[0038] In order to enable easy movement of the at least one slide and thus of the material to be dried and / or cooled and / or the fluidizing fluidized bed formed, the rotatable slide device can have at least one holding arm and at least one slide, wherein the at least one slide is arranged at a lower end of the holding arm, so that the at least one slide is rotatable above the upstream surface.

[0038]

[0039] Preferably, several sliders are arranged on the at least one holding arm or on several holding arms of the sliding device, so that they can be moved by means of a single drive.

[0039]

[0040] In another embodiment of the fluidized bed device, the at least one inlet for the material to be dried and / or cooled and the outlet for the dried and / or cooled material are spatially arranged on and / or in the housing in such a way that the material to be dried and / or cooled can be moved along the ring shape in a revolution of essentially 360° by means of the rotatable sliding device.

[0040]

[0041] This allows the material to be dried and / or cooled, and / or the fluidized bed formed, to traverse an approximately 360° ring and / or circular circumference. This is achieved in particular by placing the inlet and outlet close together on the circumference of the ring, while the material to be dried and / or cooled is moved substantially along the entire circumference of the ring before reaching the outlet. "Substantially 360°" is understood to mean that it does not have to be exactly 360°, and thus the inlet and outlet do not have to be on the same radius. Accordingly, a revolution of the material can also have an angular range of less than 360°, for example, only 300°. Preferably, however, the inlet and outlet are located close together along the circumference, on the same radius, and / or in the same plane.

[0041]

[0042] To optimally remove the dried and / or cooled material from one and / or the last fluidized bed chamber, the discharge can be arranged laterally on the ring shape and / or have an adjustable discharge weir.

[0042]

[0043] The discharge can be located laterally on the outer or inner circumference of the ring shape. This allows the material and / or the fluidized bed to be guided in such a way that it completes approximately a full 360° rotation within the ring shape before being removed laterally from the fluidized bed device via the controlled discharge.

[0043]

[0044] The discharge weir can be, in particular, a pivoting plate. The pivoting plate can be height-adjustable, allowing the amount of material discharged to be adjusted relative to the height of the fluidized bed. Conversely, the discharge weir can be set so high that the material and / or the fluidized bed cannot be discharged. This allows the material and / or the fluidized bed to circulate through the ring shape multiple times, thus enabling a longer residence time for the particles. Multiple 360° rotations are particularly advantageous with a correspondingly fast rotation of the sliding mechanism. The dried and / or cooled material falls, in a controlled quantity, over the discharge weir or, when the weir opening is full, directly into a discharge pipeline and / or equipment of a downstream process.

[0044]

[0045] In another embodiment of the fluidized bed device, the fluidized bed chambers are connected in a ring shape.

[0045]

[0046] Thus, the fluidized bed chambers form successively arranged sections of a ring shape. This allows for the establishment of identical or different process conditions over time and space within a single cycle and along the ring shape. Consequently, successively arranged gas and / or vortex zones can be used in a targeted manner within a single cycle and along the ring shape.

[0046]

[0047] In order to realize completely separated gas zones and / or fluidized beds in at least a partial circulation and / or within a partial or complete round along the ring shape, each fluidized bed space can have a ring shape, wherein in a cross-section of the fluidized bed device the ring-shaped fluidized bed spaces lie adjacent to one another.

[0048] Thus, the process conditions and / or the properties of the material can be set independently in each annular fluidized bed chamber and / or traversed sequentially. The separately ring-shaped fluidized bed chambers can, in particular, have a common discharge and / or individual discharges.

[0047]

[0049] In another embodiment of the fluidized bed device, the fluidized bed chambers adjacent to one another and / or the respective associated inflow plates are arranged in a stepped fashion at different heights.

[0048]

[0050] By arranging the annular fluidized bed chambers at different and / or stepped heights, the material and / or the formed fluidized bed can cascade from one annular fluidized bed chamber to an adjacent annular fluidized bed chamber.

[0049]

[0051] In order to set different residence times and thus different properties of the material in the annular fluidized bed chambers, the fluidized bed device and / or the sliding device can be assigned to each of the annular fluidized bed chambers and each can have a holding arm with a slide, wherein the holding arms are rotatable independently of each other.

[0050]

[0052] In addition to separately adjusting the movement speed and thus the residence time of the material particles in each annular fluidized bed chamber, the composition of the solid particles can also be individually and selectively modified in each annular fluidized bed chamber. Accordingly, products with different compositions can be discharged via multiple separate discharge points.

[0051]

[0053] In another embodiment of the fluidized bed device, a transition is arranged between each of the adjacent fluidized bed chambers, so that the material to be dried and / or cooled and / or the fluidized bed formed in the fluidized bed chamber with a lower height of the respective adjacent fluidized bed chambers can be crossed.

[0052]

[0054] The respective transition between two adjacent ring-shaped fluidized bed chambers, in particular the discharge weir, is adjustable in height so that the amount of material and / or the fluidized bed formed can be specifically adjusted.

[0053]

[0055] In principle, it should be pointed out that the staggering of the adjacent ring-shaped fluidized bed chambers with a decreasing height can be formed either radially from the outside inwards or radially from the inside outwards, with the inlet being arranged accordingly in the fluidized bed chamber with the highest height and the at least one discharge being arranged at the fluidized bed chamber with the lowest height.

[0054]

[0056] In order to achieve an almost complete 360° rotation in each annular fluidized bed chamber, the respective transition can be spatially arranged at the respective annular fluidized bed chamber in a discharge area, so that in each annular fluidized bed chamber the material to be dried and / or cooled and / or the formed fluidized bed completes a rotation of essentially 360° along the respective annular fluidized bed chamber.

[0055]

[0057] Thus, an almost complete rotation can be utilized in each annular fluidized bed chamber before the material and / or the formed fluidized bed transitions into the next annular fluidized bed chamber with a lower height to the side.

[0056]

[0058] In another aspect of the invention, the problem is solved by a method for drying and / or cooling a product in a rotating fluidized bed, comprising the following steps:

[0057] Introducing a material to be dried and / or cooled into at least one annular fluidized bed chamber and / or an annular fluidized bed chamber formed by means of sections, wherein at least one flow plate is arranged below the annular fluidized bed chamber ,

[0058] Supplying a gas for drying and / or cooling the material to be dried and / or cooled by means of a first gas inlet through a first gas space segment and a second gas inlet through a second gas space segment below the at least one flow plate, so that the gas flows through the at least one flow plate and forms a fluidized bed with the material to be dried and / or cooled in the at least one annular fluidized bed space,

[0059] Moving the material to be dried and / or cooled and / or the fluidized bed formed by means of a rotatable sliding device along the annular fluidized bed space, in particular in a revolution of essentially 360° along the annular fluidized bed space, and

[0060] Discharge of the homogeneously dried and / or cooled material from the annular fluidized bed chamber.

[0061]

[0059] Thus, a method is provided with which optimal drying and / or cooling of a product in a rotating fluidized bed is achieved by selectively imposing a different direction of movement on the product to be dried and / or cooled and / or the fluidized bed formed by moving it along the annular fluidized bed space relative to the vertically upward flowing gas, while the gas properties and / or process conditions of the vertical gas flows are selectively adjusted via the at least two gas inlets with subsequent gas space segments.

[0062]

[0060] In an additional aspect of the invention, the problem is solved by a dried and / or cooled product, wherein the dried and / or cooled product is homogeneously dried and / or cooled by a previously described method.

[0061] As a result, the individual particles of the product exhibit only a small deviation from one another in a predefined and / or desired property, such as temperature and / or humidity. It is particularly advantageous that each particle of the product corresponds to the required parameters.The homogeneously dried and / or cooled product is characterized precisely by the fact that it not only meets the required values ​​on average across all particles, as is achieved with products dried and / or cooled using state-of-the-art processes and / or in fluidized bed reactors, but that each individual particle of the dried and / or cooled product meets the required values, with only very small deviations between the values ​​of individual particles, resulting in highly homogeneous properties. For example, the mean standard deviation of the moisture content of the particles can be reduced by up to 50% compared to conventionally dried particles.

[0063]

[0062] The invention will now be described with reference to

[0064] This will be explained in more detail using examples. They show

[0065] Figure 1 shows a highly schematic sectional view of a rotating fluidized bed reactor with a sliding device and a common holding arm.

[0066] Figure 2 is a highly schematic sectional view of the rotating fluidized bed reactor from Figure 1 in top view; Figure 3 is a schematic flow diagram of a

[0067] Method for drying and / or cooling a product to be dried and / or cooled, and

[0068] Figure 4 shows a highly schematic sectional view of the left side of an alternative rotating fluidized bed reactor with height-graded, laterally adjacent ring-shaped elements.

[0069] Clear the vortex layer.

[0070]

[0063] A rotating fluidized bed reactor 101 has a housing 103. The upper surface of the housing 103 is designed as a dished lid 105. Below the dished lid 105, the housing 103 is annular with an internal cavity. An inlet 107 for introducing material to be dried and / or cooled is arranged on the housing 103, and a discharge 109 for discharging a homogeneously dried and / or cooled material 117 is arranged laterally. A gas outlet 139 for continuous gas discharge is arranged on the dished lid 105. At the bottom of the housing 103 are arranged a first gas inlet 131, a second gas inlet 132, a third gas inlet 133, a fourth gas inlet 134, a fifth gas inlet 135 and a sixth gas inlet 136 for supplying a gas 137. The six gas inlets 131, 132, 133, 134, 135, 136 are arranged approximately rotationally symmetrically in the cross-section of the housing 103 (see Figures 1 and 2).Downstream of each gas inlet 131, 132, 133, 134, 135, 136, a gas chamber is arranged, with only the first gas chamber 141 and the sixth gas chamber 146 visible in Figure 1. A flow plate 119 is arranged above each of the six gas chambers 141, 142, 143, 146.

[0071]

[0064] Above each inlet plate 119, a first fluidized bed chamber 121, a second fluidized bed chamber 122, a third fluidized bed chamber 123, a fourth fluidized bed chamber 124, a fifth fluidized bed chamber 125, and a sixth fluidized bed chamber 126 are arranged (see Figure 2; in Figure 1, only the first fluidized bed chamber 121 and the sixth fluidized bed chamber 126 are visible). A rotating fluidized bed 129 can be formed in each fluidized bed chamber 121 to 126. The six fluidized bed chambers 121 to 126, with their respective gas inlets 131 to 136, are arranged along a ring track 127. The angular range of the ring track 127 between the inlet 107 for the material to be dried and / or cooled and the outlet 109 is 320°. The discharge 109 is arranged laterally on the sixth fluidized bed chamber 126 and has a discharge weir 111 which can be adjusted in height by means of a motor 113.

[0072]

[0065] The rotating fluidized bed reactor 101 has a sliding device 151 with a star-shaped retaining arm 153, each of which is connected at its lower end to a first paddle 161, a second paddle 162, a third paddle 163, a fourth paddle 164, a fifth paddle 165, and a sixth paddle 166. The six paddles 161 to 166 are held by the star-shaped retaining arm 153 above the respective upstream plate 119 in the associated fluidized bed chambers 121 to 126. The paddles 161 to 166 occupy a cross-section of the respective fluidized bed chamber 121 to 126 with their respective cross-sections. Furthermore, the sliding device 151 has a shaft 155 which passes centrally through the housing 103 of the rotating fluidized bed reactor 101 and projects downwards into the inner cavity surrounded by an inner wall of the ring-shaped housing 103.A lower end of shaft 155 is connected to a motor for driving shaft 155. Shaft 155 has a rotational axis 159.

[0073]

[0066] The following process steps are carried out in a process 201 for drying and / or cooling a material 115 to be dried and / or cooled using the rotating fluidized bed reactor 101. First, the material 115 to be dried and / or cooled is introduced 203 through the inlet 107 into the interior of the housing 103, with the material 115 to be dried and / or cooled falling from above into the first fluidized bed chamber 121. Simultaneously, air 205 is supplied as a gas 137 from below through the six gas inlets 131 to 136. The gas 137 flows from the gas inlets 131 to 136 through the respective gas chambers 141, 146 and the respective flow plate 119 (step 207).Due to the upward direction of gas flow 138 into the six fluidized bed chambers 121 to 126, a fluidizing fluidized bed 129 with the material 115 to be dried and / or cooled is formed in the respective fluidized bed chamber 121 to 126, while at the same time the material 115 to be dried and / or cooled is moved 209 around by means of the sliding device 151, so that a rotating fluidized bed 129 is formed.Here, the first paddle 161 initially pushes the material 115 to be dried and / or cooled, which has been introduced into the first fluidized bed chamber 121, by means of the rotational movement of the holding arm 153 around the axis of rotation 159 clockwise into the second fluidized bed chamber 122 and along the ring track 127 further into the subsequent third fluidized bed chamber 123, the fourth fluidized bed chamber 124, the fifth fluidized bed chamber 125 and the sixth fluidized bed chamber 126, until the material 117, which has been homogeneously dried and / or cooled by the rotating movement, falls in the discharge 109 over the discharge weir 111 and is thereby discharged from the rotating fluidized bed reactor 101 (step 211). In continuous operation of the rotating fluidized bed reactor 101, the above-mentioned steps take place accordingly continuously and simultaneously.

[0074]

[0067] In the case of a food supplement as the material to be dried, which falls into the fluidized bed 129 of the first fluidized bed chamber 121 with approximately 15% residual moisture and a temperature of approximately 20°C, it is first mixed in the first fluidized bed chamber 121 and then, in each of the successive fluidized bed chambers 121 to 126, the moisture content is reduced by approximately 2% by mass percent, so that only approximately 3% residual moisture remains at the discharge 109. During this process, the food supplement warms up by approximately 10 to 15°C in the fluidized bed 129 of each fluidized bed chamber 121 to 126. The inflow temperatures are approximately 20°C in the first fluidized bed chamber 121 and approximately 10°C in the second fluidized bed chamber 122. 30 °C, in the third fluidized bed chamber 123 approx. 40 °C, in the fourth fluidized bed chamber 124 approx. 50 °C, in the fifth fluidized bed chamber 125 approx. 60 °C and finally in the sixth fluidized bed chamber 126 approx. 70 °C.

[0075]

[0068] In an alternative version of the rotating fluidized bed reactor 101, it has three annular fluidized bed chambers 171 to 173, with Figure 4 showing only a sectional view of a left side of the rotating fluidized bed reactor 101. The corresponding right side, not shown in the section, is mirrored along the axis of rotation 159. The rotating fluidized bed reactor 101 again has a housing 103 and a dished lid 105, and the housing 103 itself is also annular in the region of the three annular fluidized bed chambers 171, 172, 173, with an internal cavity. Adjacent to the internal cavity is the first annular fluidized bed chamber 171, which has a first height 191, the highest of the chambers.Radially outward, the first annular fluidized bed chamber 171 is followed by the second annular fluidized bed chamber 172, which is arranged at a second height 192 that is lower than the first height 191. Further radially outward, the second annular fluidized bed chamber 172 is followed by a third annular fluidized bed chamber 173, which has a third, lowest height 193. The third annular fluidized bed chamber 173 is connected to a discharge 109 at the height of a rotating fluidized bed 129. The discharge 109 is designed in detail as described above. At the same radius as the discharge 109, there is a first transition 175 between the first annular fluidized bed chamber 171 and the second annular fluidized bed chamber 172, as well as between the second annular fluidized bed chamber and the second annular fluidized bed chamber.

[0076] 172 and the third annular fluidized bed chamber 173 a second transition 177 is arranged .

[0077]

[0069] Below each annular fluidized bed chamber 171, 172, 173, a flow plate 119 and below each of these gas chambers 141, 142, 143 are arranged. Gas 137, wherein nitrogen is used as gas 137, can be supplied separately to each of the respective gas chambers 141, 142, 143 via a first gas inlet 131, a second gas inlet 132, and a third gas inlet 133, respectively. In the first annular fluidized bed chamber 171, there is a first paddle 161, in the second annular fluidized bed chamber 172, a second paddle 162, and in the third annular fluidized bed chamber

[0078] 173 A third paddle 163 of a sliding device 151 is arranged. The first paddle 161 is arranged on a shaft 155 via a separate first support arm 181 and a first bearing 185. Likewise, the second paddle 162 is connected to a second bearing 187 via a separate second support arm 182, and the third paddle 163 is connected to the shaft 155 of the sliding device 151 via a separate third support arm 183 and a separate third bearing 189. Otherwise, the shaft 155 and a motor 157 of the sliding device 151 are designed and arranged as described above. Corresponding to the different heights 191, 192, 193 of the three fluidized bed chambers 171, 172, 173, the first, second, and third support arms 181, 182, 183 are of different lengths and arranged at different heights on the shaft 155. This allows the three support arms 181, 182, 183 to pass each other at different heights and be operated at different rotational speeds.

[0079]

[0070] During operation, a material 115 to be dried and / or cooled is introduced into the first annular fluidized bed chamber 171 via an inlet 107 (not shown in Figure 4) as described above. By means of the sliding device 151 and the first paddle 161, the introduced material 115 is moved in a complete revolution through the annular fluidized bed chamber 171 before the rotating fluidized bed 129, containing the material 115 to be dried and / or cooled, partially passes from the first annular fluidized bed chamber 171 into the second annular fluidized bed chamber 172 via the first transition 175, which is designed as a transition weir.Similarly, the material 115 to be dried and / or cooled, which is initially introduced, completes a full rotation of approximately 360° in the second annular fluidized bed chamber 172 before transferring from the second annular fluidized bed chamber 172 to the third annular fluidized bed chamber 173 via the second transition 177. The transferred material is then moved by the third paddle 163 into another full rotation within the third annular fluidized bed chamber 173 before the dried and / or cooled material 117 exits the rotary fluidized bed reactor 101 via the discharge 109. Meanwhile, new material 115 to be dried and / or cooled is continuously introduced into the first annular fluidized bed chamber 171 via the inlet 107 and fluidized and moved as described above.

[0080]

[0071] Thus, implementation forms of a

[0081] A rotating fluidized bed reactor 101 is provided, with which homogeneous drying and / or cooling of a good 117 can be carried out efficiently and in a targeted, individually adjusted manner in the fluidized bed chambers 121 to 126, 171 to 173.

[0082] Reference character list

[0083] 101 Rotational fluidized bed reactor

[0084] 103 cases

[0085] 105 Klöpperdeckel

[0086] 107 Admission

[0087] Issue 109

[0088] 111 Discharge Fire Brigade

[0089] 113 Engine

[0090] 115 Goods to be dried and / or cooled

[0091] 117 homogeneously dried and / or cooled goods

[0092] 119 Inflow surface

[0093] 121 first fluidized bed chamber

[0094] 122 second fluidized bed chamber

[0095] 123 third fluidized bed chamber

[0096] 124 fourth fluidized bed chamber

[0097] 125 fifth fluidized bed chamber

[0098] 126 sixth fluidized bed chamber

[0099] 127 Ringbahn

[0100] 129 rotating fluidized bed

[0101] 131 first gas inlet

[0102] 132 second gas inlet

[0103] 133 third gas inlet

[0104] 134 fourth gas inlet

[0105] 135 fifth gas inlet

[0106] 136 sixth gas inlet

[0107] 137 Gas

[0108] 138 Gas flow direction

[0109] 139 Gas outlet first gas chamber second gas chamber third gas chamber sixth gas chamber sliding device retaining arm shaft motor axis of rotation first paddle second paddle third paddle fourth paddle fifth paddle sixth paddle first annular fluidized bed chamber second annular fluidized bed chamber third annular fluidized bed chamber first transition second transition first retaining arm second retaining arm third retaining arm first bearing second bearing third bearing first height second height 193 third height

[0110] 201 Methods for drying and / or cooling

[0111] 203 Introducing a product to be dried and / or cooled 205 Introducing a gas

[0112] 207 Flow through the upstream surface

[0113] 209 Circular movement of the goods to be dried and / or cooled

[0114] 211 Discharge of the homogeneously dried and / or cooled goods

Claims

Patent claims: Fluidized bed device (101) for drying and / or cooling a product (115), wherein the fluidized bed device (101) has a housing (103), at least one inlet (107) for the product (115) to be dried and / or cooled, an outlet (109) for the dried and / or cooled product (117), at least one first gas inlet (131, 132, 133, 134, 135, 136) for supplying a gas (137) for drying and / or cooling the product (115) to be dried and / or cooled, and at least one gas outlet (139), wherein at least one flow plate (119) is arranged in the housing (103), the at least one flow plate (119) through which the gas (137) can flow from below, and above the at least one flow plate (119) at least one first fluidized bed chamber (121, 122, 123, 124, 125, 126, 171, 172, 173) is arranged in the housing (103),such that a fluidized bed with the material (115) to be dried and / or cooled can be formed in the at least first fluidized bed chamber (121, 122, 123, 124, 125, 126, 171, 172, 173) by means of the flowing gas (137), wherein the at least first fluidized bed chamber (121, 122, 123, 124, 125, 126, 171, 172, 173) is formed in a ring shape in a top view and the fluidized bed device has at least one rotatable sliding device (151) for sliding the material (115) to be dried and / or cooled along the ring shape, so that a fluidized bed (129) forming can be guided along the ring shape and homogeneous drying and / or cooling of the material in the fluidized bed (129) can be achieved, characterized in that the Fluidized bed device (101) has a second gas inlet (132) and a first gas chamber segment (141) between the first gas inlet (131) and the at least one flow plate (119) and between the second gas inlet, (132) and at least one inflow plate (119) a second gas space segment (142) are arranged.

2. Fluidized bed device (101) according to claim 1, characterized in that the fluidized bed device (101) comprises a second fluidized bed chamber (122, 172), a third fluidized bed chamber (123, 173), a fourth fluidized bed chamber (124), a fifth fluidized bed chamber (125) and / or a sixth fluidized bed chamber (126) and optionally further fluidized bed chambers.

3. Fluidized bed device (101) according to claim 1 or 2, characterized in that the fluidized bed device (101) has a third gas inlet (133), a fourth gas inlet (134), a fifth gas inlet (135) and / or a sixth gas inlet (136) and optionally further gas inlets.

4. Fluidized bed device (101) according to claim 3, characterized in that a gas space segment (143, 146) is arranged between the respective gas inlet (133, 134, 135, 136) and the at least one flow plate (119).

5. Fluidized bed device (101) according to claim 4, characterized in that the gas space segments (141, 142, 143, 146) are spatially separated from each other, so that the gas is released from the respective gas space segment (141, 142, 143, 146). (137) through the respective flow plate (119) into each of the fluidized bed spaces (121, 122, 123, 124, 125, 126, 171, 172, 173).

6. Fluidized bed device (101) according to claim 4, characterized in that the gas space segments (141, 146) are connected to form a gas channel and the gas channel is formed in a ring shape in a top view.

7. Fluidized bed device (101) according to one of the previous Claims, characterized in that the rotatable sliding device (151) has at least one retaining arm (153, 181, 182, 183) and at least one slider (161, 162, 163, 164, 165, 166) having at least one Slides (161, 162, 163, 164, 165, 166) are arranged at a lower end of the retaining arm (153, 181, 182, 183) so that at least one slide (161, 162, 163, 164, 165, 166) is rotatable above the inflow base (119).

8. Fluidized bed device (101) according to one of the preceding claims, characterized in that the at least one inlet (107) for the material (115) to be dried and / or cooled and the outlet (109) for the dried and / or cooled material (117) are spatially arranged on and / or in the housing (103) such that the material (115) to be dried and / or cooled can be moved along the ring shape in a revolution of essentially 360° by means of the rotatable sliding device (151).

9. Fluidized bed device (101) according to one of the preceding claims, characterized in that the discharge (109) is arranged laterally on the ring shape and / or has an adjustable discharge weir (111).

10. Fluidized bed device (101) according to one of claims 2 to 9, characterized in that the fluidized bed spaces (121, 122, 123, 124, 125, 126) are connected to form a ring shape.

11. Fluidized bed device (101) according to one of claims 2 to 9, characterized in that each fluidized bed chamber (171, 172, 173) has a ring shape, wherein in a cross-section of the fluidized bed device (101) the annular fluidized bed chambers (171, 172, 173) are adjacent to one another.

12. Fluidized bed device (101) according to claim 11, characterized in that the fluidized bed chambers (171, 172, 173) adjacent to each other and / or the respective associated inflow plates are arranged in stages at different heights (191, 192, 193).

13. Fluidized bed device (101) according to claim 11 or 12, characterized in that the fluidized bed device (101) and / or the sliding device (151) has a retaining arm (181, 182, 183) with a slide (161, 162, 163) associated with each of the annular fluidized bed chambers (171, 172, 173), wherein the retaining arms (181, 182, 183) are rotatable independently of each other.

14. Fluidized bed device (101) according to one of claims 11 to 13, characterized in that a transition (175, 177) is arranged between the adjacent fluidized bed chambers (171, 172, 173) so that the material to be dried and / or cooled (115) and / or the fluidized bed formed can enter the fluidized bed chamber (121, 122, 123, 124, 125, 126) with a lower height of the respective adjacent fluidized bed spaces (121, 122, 123, 124, 125, 126) is transgressible.

15. Fluidized bed device (101) according to claim 14, characterized in that the respective transition (175, 177) is spatially arranged at the respective annular fluidized bed chamber (171, 172, 173) in a region of the discharge (109), such that in each annular fluidized bed chamber (171, 172, 173) the material to be dried and / or cooled (115) and / or the formed fluidized bed (129) completes a revolution of substantially 360° along the respective annular fluidized bed chamber. (171, 172, 173) passes through.

6. Method (201) for drying and / or cooling a product (115) in a continuously rotating fluidized bed (129) , with the following steps: - Introducing (203) a material (115) to be dried and / or cooled into at least one annular fluidized bed chamber (121, 122, 123, 124, 125, 126, 171, 172, 173) and / or an annular fluidized bed chamber (121, 122, 123, 124, 125, 126) formed by means of sections, wherein at least one flow plate (119) is arranged below the annular fluidized bed chamber (121, 122, 123, 124, 125, 126, 171, 172, 173), - Supplying (205) a gas (137) for drying and / or cooling the material to be dried and / or cooled (115) by means of a first gas inlet (131) through a first gas space segment (141) and a second gas inlet (132) through a second gas space segment (142) below the at least one inlet plate (119), such that the gas (137) flows through the at least one inlet plate (137) and forms a fluidized bed (129) with the material to be dried and / or cooled (115) in the at least one annular fluidized bed space (121, 122, 123, 124, 125, 126, 171, 172, 173), - Moving (209) the material to be dried and / or cooled (115) and / or the fluidized bed formed (129) by means of a rotatable sliding device (151) along the annular fluidized bed space (121, 122, 123, 124, 125, 126, 171, 172, 173), in particular in a revolution of essentially 360° along the annular fluidized bed space (121, 122, 123, 124, 125, 126, 171, 172, 173), and - Discharge (211) of the homogeneously dried and / or cooled goods (117) from the annular vortex layer space (121, 122, 123, 124, 125, 126, 171, 172, 173) .

17. Dried and / or cooled product (117) , characterized in that the dried and / or cooled product (117) is homogeneously dried and / or cooled by a method (201) according to claim 16.

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