Method for treating particulate material in a fluidizer - Patent Application 20070122997

Abstract

The invention relates to a method for treating a particulate material M in a fluidizer 1 .

Description

[Technical Field]

[0001] The present invention relates to a method for processing particulate material in a fluidization device comprising a fluidization unit having a longitudinal axis, the fluidization unit having a perforated receiving bottom dividing the fluidization unit into a distribution chamber and a fluidization chamber disposed above the distribution chamber; wherein the fluidization chamber is provided with a material inlet for the material to be processed, and the distribution chamber comprises a material discharge portion provided with a material outlet for the processed material, the material outlet portion having a material outlet face and lower and upper edges; and a shutoff device closes the material discharge portion; and wherein the distribution chamber is provided with a fluid inlet, and the fluidization chamber is a fluid outlet for a process gas to flow from the fluid inlet through the perforated receiving bottom to a fluid outlet to fluidize the material within the fluidization chamber; In operation, the fluidization chamber is first filled with the material to be treated via the material inlet, and then the material is treated by the process gas flowing through the fluidization chamber. [Background technology]

[0002] Fluidizers and turbulent bed devices for the treatment of finely divided materials have been known for a long time.

[0003] Patent document 1 discloses a fluidized bed apparatus for processing fine particle materials, which comprises a chamber surrounding a distribution chamber, a perforated receiving bottom arranged above the distribution chamber, an inlet and an outlet for process gas, and a discharge opening having lower and upper edges and defining a height and an opening surface, wherein the receiving bottom is positioned above the lower edge of the discharge opening so that the opening surface of the discharge opening is divided into an opening surface below the receiving bottom and an opening surface below the receiving bottom.

[0004] When the process gas flows from the distribution chamber around the receiving bottom into the fluidization chamber, it is disadvantageous that the process gas forms a kind of film at the discharge opening during the discharge of the particulate material, which at least partially restricts the discharge of the particulate material and at the same time reduces the discharge rate of the particulate material from the fluidization device. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] European Patent Application Publication No. 2 611 531 A1 Summary of the Invention [Problem to be solved by the invention]

[0006] The object of the present invention is therefore, on the one hand, to further improve the discharge of fluidizers and, on the other hand, to simultaneously overcome the disadvantages of the prior art. [Means for solving the problem]

[0007] This task is furthermore carried out in the manner described at the beginning: the distribution chamber comprises an at least partially circumferentially extending web arranged in the region of the material outlet surface, and After the operating state, the receiving bottom portion, which is arranged to be movable relative to the fluidization unit, the receiving bottom is disposed on the web in such a manner that, in a discharge state, a fluid connection is formed along the receiving bottom between the material outlet disposed in the distribution chamber and the fluidization chamber, and the processed material is discharged from the fluidization unit through the material outlet; is moved to the ejection position, In the discharge state where the receiving bottom is at the discharge position, the shutoff device opens the material discharge portion. That, and, the web prevents the process gas flow from flowing around the bottom in the area of ​​the material outlet face, on the one hand, preventing the treated material from falling off and, on the other hand, allowing the treated material to be discharged; the web is formed in a sickle, crescent, or ring shape; the upper side of the web is arranged tangentially to the material outlet face of the material outlet or below the material outlet in a direction opposite to the flow direction of the process gas; in the region of the material outlet, the distribution chamber is at least partially free from any gaps due to the circumferentially extending webs, the web has an angle β of 160°, or from 5° to 180°, or from 10° to 60°; and In the discharge state, the flow receiving bottom rests on the web; is solved by [Effects of the Invention]

[0008] The advantage of this configuration is that the web on which the flow-receiving bottom is arranged is The purpose is to prevent the process gas flow from flowing around the bottom receiving part in the area of ​​the material outlet surface and thereby forming a kind of "process gas curtain" which limits or completely prevents the discharge of the processed material. Additionally, the web prevents material processed in the fluidization chamber from falling into the distribution chamber upon discharge through the resulting gap between the receiving bottom and the distribution chamber inner wall.

[0009] More advantageously, the relative movement between the receiving bottom and the fluidizing unit allows the fine particle material to be discharged through the material discharge section after treatment, and this relative movement can be implemented in a structure and manner in which the process gas assists the discharge of the treated material through the material discharge section.

[0010] According to a related advantageous configuration of the method, the fluidization unit has a pivot axis extending transversely to the longitudinal axis of the fluidization unit, The flow receiving bottom is rotatably disposed on the pivot shaft, and The receiving base is then pivoted around this pivot axis by an appropriate angle of 5° to 10° after the treatment of the finely divided material. This configuration allows for simple relative movement in the form of a pivoting movement about the pivot axis, which, on the one hand, opens the material outlet of the material discharge section, which is preferably arranged in the distribution chamber, for the discharge of the material processed in the fluidization chamber, and, on the other hand, facilitates this discharge by the inclined position of the receiving bottom, which, moreover, is preferably pivoted about the pivot axis by an angle between 0° and 60°, expediently by an angle of 5° to 10°. This pivoting movement creates a basically sickle- or ring-shaped gap between the receiving bottom and the distribution chamber and / or fluidization chamber, which should not be too large, because otherwise there is a risk that the processed material could reach the distribution chamber in the discharge state, despite the process gas flowing through this gap. The process gas effectively seals this gap—where no web is located—in the discharge state.

[0011] A similarly advantageous configuration of the method provides: The flow receiving bottom portion is The device is arranged to be movable in the axial direction of the longitudinal axis, and The receiving base is then moved in the axial direction of the longitudinal axis in the form of a linear movement until it is positioned below the lower edge of the material outlet. Advantageously, the receiving bottom is displaced axially along the longitudinal axis.Also optionally, the material discharge can be opened after processing of the particulate material for improved discharge.

[0012] It is particularly advantageous if the receiving bottom part performs a pivoting movement and a linear movement when moving to the discharge position. In this case, the bottom part is pivoted about the pivot axis by a pivoting movement, and is moved in the axial direction of the longitudinal axis in the form of a linear movement, which can be carried out in any order, one after the other, or simultaneously, thereby taking advantage of the advantages of the linear movement as well as the pivoting movement.

[0013] According to an additional advantageous configuration of the method, the receiving base is moved relative to the fluidization unit so that, in the discharge position, at least a portion of the receiving base is positioned below the lower edge of the material outlet. In this regard, the receiving base is moved relative to the fluidization unit such that, in the discharge position, the receiving base is positioned below the lower edge of the material outlet. Alternatively, the upper edge or upper surface of the receiving bottom is flush with the lower edge of the material discharge section. In both cases, the material outlet surface is maximally open, so that the discharge of the processed material can be carried out efficiently and quickly.

[0014] According to an additional advantageous further configuration of the method, the material discharge section has a shut-off device that opens the material discharge section as soon as the receiving bottom section is in the discharge position. Advantageously, the shut-off device opens the material discharge section as soon as at least a part of the receiving bottom section is positioned below the lower edge of the material outlet. This allows the material outlet surface to be maximally open, and the material processed in the fluidization chamber of the fluidization unit 3 can be efficiently and time-savingly discharged from the fluidization unit of the fluidization device.

[0015] According to a further advantageous further development of the method, the material discharge, in particular configured as a discharge pipe, is provided with a fluid connection for supplying an auxiliary gas, which has a fluid connection outlet, To assist in the discharge of the processed material, the auxiliary gas flows through the fluid connection outlet into the material discharge section, at least when the shut-off device opens the material discharge section. To support and improve the discharge of the processed material, it is possible to supply a fluid, suitably an auxiliary gas or a supporting gas, to the material discharge through the fluid connection, the auxiliary gas preferably corresponding to the process gas. It is furthermore advantageous if the auxiliary gas is branched off from the process gas and is transferred back to this process gas after the material discharge in a closed-loop operating mode.

[0016] Particularly preferably, the fluid connection outlet, in particular the perforated coating or part of the perforations, is configured in such a way that the auxiliary gas has an outflow direction in the direction of discharge of the treated material, this highly advantageous further configuration further supporting the discharge of the treated material.

[0017] In the following, the fluidizer and advantageous and preferred configurations of this fluidizer are described in detail. The fluidization apparatus for processing particulate material includes a fluidization unit having a longitudinal axis; the fluidization unit having a perforated receiving bottom dividing the fluidization unit into a distribution chamber and a fluidization chamber disposed above the distribution chamber; wherein the fluidization chamber is provided with a material inlet for the material to be processed, and the distribution chamber comprises a material discharge portion provided with a material outlet for the processed material, the material outlet portion having a material outlet surface and lower and upper edges; and a shutoff device closes the material discharge portion; and wherein the distribution chamber is provided with a fluid inlet, and the fluidization chamber is a fluid outlet for a process gas to flow from the fluid inlet through the perforated receiving bottom to a fluid outlet to fluidize the material within the fluidization chamber; The distribution chamber then comprises an at least partially circumferentially extending web arranged in the region of the material outlet surface, and the receiving bottom is arranged to be movable relative to the fluidization unit; the receiving bottom is movable relative to the fluidization unit to a discharge position by the movement of the receiving bottom; At that time, to discharge the processed material from the fluidization unit, The flow receiving bottom portion, in a discharge state, along the receiving bottom, disposed on the web such that a fluid connection is formed between the material outlet disposed in the distribution chamber and the fluidization chamber; and In this case, in the discharge state in the discharge position of the receiving bottom, the shutoff device opens the material discharge portion.

[0018] The advantage of this configuration is that the web on which the bottom is located is the process gas flow flows around the bottom receiving part in the area of ​​the material outlet face and thereby forms a kind of "process gas curtain" which limits or completely prevents the discharge of the processed material; The purpose is to prevent this. Additionally, the web prevents material processed in the fluidization chamber from falling into the distribution chamber upon discharge through the resulting gap between the receiving bottom and the distribution chamber inner wall.

[0019] Advantageously, the relative movement between the receiving bottom and the fluidization unit allows the particulate material to be discharged through the material discharge after treatment, and this relative movement can be implemented in a structure and manner in which the process gas assists the discharge of the treated material through the material discharge.

[0020] In accordance with an advantageous embodiment of the fluidizer in this regard, the receiving bottom is preferably arranged above the upper edge of the fluid outlet in the operating position. When the receiving bottom is in the operating position, the fluidizer is in an operating state. Accordingly, in the operating position, material can be processed in the fluidization chamber without material being discharged through the material outlet.

[0021] In the discharge position, the receiving base is positioned relative to the fluidizer, advantageously at least partially, below the upper edge of the fluid outlet, due to the movement of the receiving base. In this discharge position, the fluidizer is in a discharge state.

[0022] According to a particularly advantageous further configuration of the fluidizer, the upper side of the web is arranged tangentially to the material outlet surface of the material outlet or arranged below this material outlet in the direction opposite to the flow direction of the process gas. Such an arrangement of the web in the distribution chamber significantly improves the discharge of the processed material from the fluidizer, in particular from the fluidization chamber. In this connection, the upper side of the web is expediently arranged tangentially to the lower edge of the material outlet surface of the material outlet, which is particularly advantageous since the processed material can thus be discharged from the fluidizer without obstruction.

[0023] Moreover, the webs are advantageously formed in a sickle shape, in particular in a crescent shape, or in a ring shape, so that the process gas flow is influenced with the least intensity, and therefore the fluidization of the material to be processed in the fluidization chamber also works very well in the working position.

[0024] The associated advantageous configuration of the fluidization device allows: the fluidization unit has a pivot axis extending transversely to the longitudinal axis of the fluidization unit; The flow receiving bottom is rotatably disposed on the pivot shaft. Expediently, this pivot axis extends perpendicular to the central longitudinal axis of the fluidization unit. With this arrangement, simple relative movements in the form of pivoting movements about a pivot axis are possible. On the one hand, this opens the material discharge section of the material discharge arranged in the distribution chamber for the discharge of the material processed in the fluidization chamber, and on the other hand, this discharge is facilitated - just as in liquids - by the inclined position of the receiving bottom. Furthermore, the receiving base is preferably pivoted about the pivot axis by an angle between 0° and 60°, expediently by an angle of 5° to 10°. This swirling movement essentially creates a ring-shaped or sickle-shaped gap between the receiving bottom and the distribution chamber and / or fluidization chamber, which gap should not be too large, since otherwise there is a risk that in the discharge state the processed material could reach the distribution chamber despite the through-flow of this gap with process gas. In principle, the gap is sealed by the process gas. In the region of the material outlet, the fluidization unit, in particular the distribution chamber, is at least partly free of any gaps due to the circumferentially extending webs. The flow receiving base is pivoted about a pivot axis and positioned on the web.

[0025] In a further advantageous, alternative configuration of the fluidization device, the receiving bottom is arranged movably in the axial direction of the longitudinal axis, the receiving bottom being moved in the axial direction of the longitudinal axis in the form of a linear movement. The bottom is expediently moved until its upper surface is flush with or positioned below the lower edge. Advantageously, the bottom is moved in the axial direction of the longitudinal axis. Also optionally, the material discharge can be opened after processing of the particulate material for improved discharge.

[0026] More preferably, the fluidization unit has a pivot axis extending transversely to the longitudinal axis of the fluidization unit and arranged movably in the axial direction of this longitudinal axis, on which pivot axis the receiving bottom 7 is arranged so as to be pivotable. This configuration of the fluidizer combines the advantages of both alternative embodiments of the fluidizer, i.e., the pivotal and linear movement, and in addition, the gap formed between the fluidizer unit and the receiving bottom—where no web is arranged—is smaller.

[0027] According to an additional advantageous configuration of the fluidization device, the receiving bottom, in particular the upper side of the receiving bottom, is positioned at least partially below the lower edge of the material outlet in the discharge position due to the movement of the receiving bottom relative to the fluidization unit. It is particularly advantageous if the receiving bottom, in particular its upper side, is positioned below the lower edge of the material outlet in the discharge position, so that the material outlet surface is maximally open and the discharge of the processed material can therefore be carried out efficiently and quickly.

[0028] Advantageously, the material discharge, in particular configured as a discharge pipe, is provided with a fluid connection for supplying auxiliary gas, which has a fluid connection outlet. In order to support and improve the discharge of the processed material, it is possible to supply a fluid, suitably an auxiliary gas or a supporting gas, to the material discharge via the fluid connection. Preferably, the auxiliary gas corresponds to the process gas, more preferably it is branched off from the process gas and is transferred back to this process gas after the material outlet in a closed-loop operation.

[0029] In connection with the above, the material discharge section has an insert bottom corresponding to a further configuration of the fluidization device, which insert bottom divides the material discharge section into a material passage for transporting the treated material from the fluidization unit and a fluid passage for conducting auxiliary gas, with a fluid connection outlet being arranged in the insert bottom, so that the auxiliary gas can overflow from the fluid passage into the material passage. This provides a very simple and space-saving construction for the introduction of auxiliary gas, in particular auxiliary air.

[0030] The fluid connection outlet preferably has a perforated cover or is formed by perforations in the insert bottom, which prevents the treated material to be discharged from the fluidization unit from falling into the fluid connection and clogging it. Particularly preferably, the fluid connection outlet, in particular the perforated coating or part of the perforations, is configured in such a way that the auxiliary gas has an outflow direction in the direction of discharge of the treated material, this highly advantageous further configuration further supporting the discharge of the treated material.

[0031] The fluid connection outlet is expediently arranged in the region of the material outlet surface, thereby ensuring that the auxiliary gas transports and / or assists the treated material to be discharged directly to the material outlet.

[0032] Advantageously, the process is operated in a fluidization device as previously described.

[0033] The invention will now be explained in detail with reference to the accompanying drawings. [Brief explanation of the drawings]

[0034] [Figure 1] FIG. 2 shows a schematic, illustrative plan view of a first embodiment of a fluidization device in an operating position, taken along the cross section AA. [Figure 2] 2 is a cross-sectional view along the section AA indicated in FIG. 1, showing a schematic illustration of a first embodiment of a fluidization device in an operating position, with a receiving bottom arranged on the pivot axis, in a horizontal position. [Figure 3] 2 is a cross-sectional view along the section AA shown in FIG. 1, showing a schematic illustration of a first embodiment of a fluidization device in a discharge position, with a receiving bottom disposed on the pivot axis, in a position pivoted about the pivot axis by an angle α. [Figure 4] FIG. 1 shows a schematic, illustrative plan view of a first embodiment of a fluidization device in a discharge position. [Figure 5] 1 is a schematic representation in projection of the inside of the distribution chamber with the web and the material outlet of a first embodiment of the fluidizing device in the discharge position. [Figure 6] FIG. 2 shows a schematic, illustrative plan view of a second embodiment of a fluidization device in an operating position, taken along the cross section AA. [Figure 7] A cross-sectional view along the cross section AA shown in Figure 6, showing a schematic illustration of a second embodiment of a fluidization device in an operating position, with the receiving bottom arranged in plane ZZ, in a horizontal position. [Figure 8] A cross-sectional view along the section AA shown in Figure 6, showing a schematic illustration of a second embodiment of a fluidization device in a discharge position, with the receiving bottom arranged in the plane Z'-Z', in a horizontal position. [Figure 9] FIG. 9 is an enlarged view of a portion A shown in FIG. 8. [Figure 10] FIG. 2 shows a schematic, illustrative plan view of a third embodiment of a fluidization device in an operating position, taken along the cross section AA. [Figure 11] 10 , a cross-sectional view along section AA of FIG. 10 , with a schematic illustration of a third embodiment of the fluidization device in an operating position, with the receiving bottom disposed in plane ZZ, in a horizontal position. [Figure 12] 11 is a schematic illustration of a third embodiment of the fluidization device in a discharge position, a cross-sectional view along the cross section AA shown in FIG. 10, in which the receiving bottom has been moved in the axial direction of the longitudinal axis XX into the plane Z'-Z' and pivoted by an angle α about the pivot axis. [Figure 13] FIG. 10 shows a schematic, illustrative plan view of a fourth embodiment of a fluidization device in an operating position, taken along the cross section AA. [Figure 14] A cross-sectional view along section AA in Figure 13, showing a schematic illustration of a fourth embodiment of a fluidization device in an operating position, having a receiving bottom arranged in plane ZZ and a material discharge section with an insert bottom, in a horizontal position. [Figure 15] 14 is a cross-sectional view along the section AA shown in FIG. 13, showing a schematic illustration of a fourth embodiment of the fluidization device in a discharge position, with a receiving bottom disposed on the pivot axis, in a position pivoted about the pivot axis by an angle α. [Figure 16] FIG. 10 shows a schematic, illustrative plan view of a fourth embodiment of a fluidization device in a discharge position. [Figure 17] 10 is a schematic representation in projection of the inside of the distribution chamber with the web and the material outlet of a fourth embodiment of the fluidizing device in the discharge position. [Figure 18] FIG. 10 shows a schematic, illustrative plan view of a fifth embodiment of a fluidization device in an operating position, taken along the cross section AA. [Figure 19] A cross-sectional view along the section AA shown in Figure 18, showing a schematic illustration of a fifth embodiment of a fluidization device in a discharge position, with a receiving bottom located on the pivot axis, in a position pivoted around the pivot axis by an angle α. DETAILED DESCRIPTION OF THE INVENTION

[0035] Unless otherwise expressly stated, the following description relates to the entire embodiment shown in the figures of a fluidizing device 1 for the treatment of particulate material M.

[0036] FIG. 1 shows a schematic, illustrative plan view of a first embodiment of a fluidization device 1 formed as a turbulent bed device 2, along the cross section AA. The fluidization device 1 comprises a fluidization unit 3 having a central longitudinal axis XX, in which a discharge pipe 4 is arranged with a central axis YY that stands perpendicular to the longitudinal axis XX. The central axis YY and the longitudinal axis XX define a cross section AA. The melting unit 1 is in an operational state.

[0037] In FIG. 2, a cross-section along the section AA shown in FIG. 1 is illustrated by a schematic illustration of a first embodiment of a fluidization device 1 formed as a turbulent bed device 2 in an operating position.

[0038] The fluidization unit 3 is provided with a perforated receiving bottom 7 which divides the fluidization unit 3 into a distribution chamber 5 and a fluidization chamber 6 located above the distribution chamber 5 . In the operating position, the receiving bottom 7 is located in a plane ZZ defined perpendicular to the cross section AA, so that in the operating position the material M to be treated is located in the fluidization chamber 6 above the receiving bottom 7. When the receiving bottom 7 is in the operating position, the melting unit 1 is in operation.

[0039] The fluidization unit 3 of the fluidization device 1 configured as a turbulent bed device 2 is rotationally symmetrical about the longitudinal axis XX. Other geometric shapes, such as rectangular, in particular square, can be realized in other, not shown, embodiments.

[0040] In the embodiment shown in FIG. 2, the distribution chamber 5 has a cylindrical shape with a constant distribution chamber inner diameter 9 over the distribution chamber height 8 . The distribution chamber 5 comprises distribution chamber walls 10 spaced apart radially relative to the longitudinal axis XX. The distribution chamber walls 10 have an inner surface thereof, referred to as the inner distribution chamber wall 11, and an outer surface thereof, referred to as the outer distribution chamber wall 12.

[0041] Similarly, the fluidization chamber 6 is cylindrical in the illustrated embodiment, whereas the fluidization chamber 6, unlike the distribution chamber 5, has a conical shape with an inner fluidization chamber diameter 14 that increases from bottom to top over the fluidization chamber height 13. The fluidization chamber 6 includes a fluidization chamber wall 15 spaced apart relative to the longitudinal axis XX. The fluidization chamber wall 15 has an inner surface thereof, referred to as an inner fluidization chamber wall 16, and an outer surface thereof, referred to as an outer fluidization chamber wall 17.

[0042] The fluidization chamber 6 is additionally provided with a material inlet 18 for the material M to be treated, and the distribution chamber 5 is provided with a material outlet 19 for the treated material M'. The material discharge 19 is in particular configured as a discharge pipe 4 with a discharge pipe wall 20, which in the embodiment shown in Figure 2 is arranged in the distribution chamber wall 10 perpendicular to the longitudinal axis XX of the fluidization unit 3 and rotationally symmetrical about the central axis YY. The material outlet 21 of the material discharge 19 is arranged in this case in such a way that it is flush with the inner distribution chamber wall 11. The material outlet 21 has a material outlet face 22 and is provided with lower and upper edges 23 a , 23 b for the discharge of the material M′ processed in the fluidization chamber 6 .

[0043] The material outlet 21 of the material discharge 19 has a shut-off device 24, which is closed in the operating position of the receiving bottom 7. The shut-off device 24 is expediently configured as a flip-up cover 26 that can be pivoted about a pivot axis 25. In the operating state, the material discharge 19 of the fluidization unit 3 of the fluidization device 1 is therefore closed. It is also possible for the shut-off device 24 to be formed at another position in the material discharge 19 formed as a discharge pipe 4 in the direction of the central axis YY.

[0044] Furthermore, the distribution chamber 5 has a fluid inlet 27 and the fluidization chamber 6 has a fluid outlet 28 . In the operating position shown in FIG. 2, the perforated receiving bottom 7 is arranged in a horizontal position in the plane ZZ, with the process gas PG flowing into the fluidization unit 3 at the fluid inlet 27 and from there through the perforated receiving bottom 7 to the fluid outlet 28, where it leaves the fluidization unit 3. The perforated receiving bottom 7 expediently has through-openings (not shown) for the process gas PG, which generate a pressure loss during the through-flow. In the operating state, i.e. in the operating position of the receiving bottom 7, the process gas PG fluidizes the material M to be treated in the fluidization chamber 6.

[0045] The receiving bottom 7 is arranged in the fluidization unit 3 so as to be movable relative to the fluidization unit 3. In the embodiment of the fluidization device 1 shown in FIG. 2, the fluidization unit 3 has a pivot axis 29 extending transversely to the longitudinal axis XX of the fluidization unit 3, on which the receiving bottom 7 is arranged so as to be pivotable. In the first illustrated embodiment of the fluidization device 1, the pivot axis 29 expediently extends perpendicular to the longitudinal axis XX of the fluidization unit 3 and perpendicular to the central axis YY of the discharge pipe 4. In the operating state of the fluidization device 1 shown in FIG. 2, the receiving bottom 7 is arranged above the upper edge 23b. This ensures that during the treatment of the particulate material M, no material M is discharged from the fluidization unit 3 of the fluidization device 1 by the process gas PG in the fluidization chamber 6.

[0046] Moreover, the distribution chamber 5 has an at least partially circumferentially extending web 30 arranged in the region of the material outlet face 22 . The upper side 31 of the web 30 is arranged tangentially to the material outlet surface 22 of the material outlet 21. Expediently, the upper side 31 of the web 30 is arranged tangentially to the lower edge 23a of the material outlet surface 22 of the material outlet 21. The web 30 is thereby formed sickle-shaped, in particular crescent-shaped.

[0047] After treatment of the particulate material M in the turbulent bed device 2, the treated material M' is discharged from the fluidizer 1 through the material passage 42 in a discharge state. For this purpose, the receiving bottom 7, which can be moved to a discharge position, is moved in the form of a pivoting movement relative to the fluidization unit 3, so that the receiving bottom is pivoted about the pivot axis 29 to the discharge position and positioned within the fluidization unit 3. When the receiving bottom 7 is in the discharge position, the fluidization device 1 is in the discharge state.

[0048] In the discharge position, the receiving bottom 7 is pivoted by an angle α about the pivot axis 29 to such an extent that the receiving bottom 7 is disposed on the web 30. This creates a fluid connection along the receiving bottom 7 between the fluidization chamber 6 and the material outlet 21 arranged in the distribution chamber 5, for discharging the treated material from the fluidization unit 3. The receiving bottom 7 is preferably pivoted by an angle of 5° to 10°. This causes the treated material M' to flow toward the material outlet. The discharge of the treated material M' is assisted by the process gas PG, which also flows in the discharge state from the fluid inlet 27 to the fluid outlet 28 through the fluidization unit 3 of the fluidizer 1.

[0049] As soon as the receiving bottom 7, in the discharge state, is placed on the web 30 in the discharge position, the shut-off device 24 opens the material discharge 19. Discharge of the material M' processed in the fluidization unit 3 then takes place. Advantageously, in the discharge state, the shut-off device 24 is opened as widely as possible, so that the material outlet surface 22 of the material outlet 21 is maximized, which additionally promotes improved discharge of the treated material M'.

[0050] In the discharge position, due to the pivoting movement of the receiving bottom 7 about the pivot axis 29, a gap 32 is formed between the receiving bottom 7 and the fluidization unit 3, in particular between the receiving bottom 7 and the distribution chamber inner wall 11 and / or the fluidization chamber inner wall 16, which gap essentially extends around the entire circumference of the receiving bottom 7. The width of the formed gap is variable. Through this gap 32, in the discharge state, the process gas PG flows, so that the treated material M' cannot reach or fall from the fluidization chamber 6 into the distribution chamber 5 during discharge.

[0051] In the area of ​​the material outlet 21, the web 30, on the one hand, prevents the arrival or fall of the material M' to be discharged, and on the other hand, the web 30, on which the receiving bottom 7 is arranged, blocks the process gas flow in the area of ​​the material outlet surface 22, which flows around the receiving bottom 7 and thereby forms a kind of "process gas curtain" which limits or completely prevents the discharge of the treated material.

[0052] 4 shows a schematic, diagrammatic plan view of a first embodiment of the fluidizer 1 corresponding to FIG. 1, in which the fluidizer 1 is in the discharge position. The receiving bottom 7 is arranged on the web 30 in a position pivoted by an angle α about the pivot axis 29, so that a gap 32 of varying width is formed between the receiving bottom 7 and the fluidization unit 3, in particular the inner distribution chamber wall 11 and / or the inner fluidization chamber wall 16. Through this gap 32 the process gas PG flows during the evacuation process so that no treated material M′ can reach into the distribution chamber 5 .

[0053] In the region of the material outlet surface 22, the webs 30 arranged in the distribution chamber 5 extend in the circumferential direction. The upper side 31 of the webs 30 is arranged tangentially to the lower edge 23a of the material outlet surface 22 of the material outlet 21. The webs 30 are thereby formed sickle-shaped, in particular crescent-shaped. The web 30 has an angle β of 160°. In other embodiments not shown here, the web 30 has an angle β of between 5° and 180°, advantageously between 10° and 60°.

[0054] Figure 5 shows a schematic representation of the projection of the distribution chamber inner wall 11 with the web 30 and the material outlet 21 of the first embodiment of the fluidizer 1 in the discharge position. As already described in Figure 4, the upper side 31 of the web 30 is arranged tangentially to the lower edge 23a of the material outlet face 22 of the material outlet 21. This allows the material outlet face 22 to be as open as possible. 5 opens the material discharge section 19 in the discharge position, so that the processed material M' can be efficiently discharged from the fluidization chamber 6 through the most open material outlet face 22 of the fluidization unit 3. The projected view has a sickle-shaped web 30, which has an angle β of approximately 160°.

[0055] FIG. 6 shows a schematic, illustrative plan view, corresponding to FIG. 1, of a second embodiment of a fluidization device 1 configured as a turbulent bed device 2, with cross section AA. The fluidization device 1 comprises a fluidization unit 3 having a central longitudinal axis XX, in which a discharge pipe 4 is arranged with a central axis YY that stands perpendicular to the longitudinal axis XX. The central axis YY and the longitudinal axis XX define a cross section AA. The melting unit 1 is in an operational state.

[0056] A schematic cross-sectional view of the fluidization device 1 in operation according to a second embodiment, taken along the section AA in FIG. 6, is shown in FIG. In the operating position, the receiving bottom 7 is located in a plane ZZ defined perpendicular to the cross section AA, so that in the operating state the material M to be treated is located in the fluidization chamber 6 above the receiving bottom 7 and can be fluidized and treated there.

[0057] Moreover, the second embodiment of the fluidization device 1 is basically constructed in the same way as the first embodiment of the fluidization device 1. Both embodiments differ in the technical implementation of the relative movements carried out between the fluidization unit 3 and the receiving bottom 7. Instead of a pivoting movement—as in the first embodiment—the receiving base 7 in the second embodiment performs a linear movement in the axial direction 33 of the longitudinal axis XX. The receiving base 7 is accordingly arranged so as to be movable in the axial direction 33 of the longitudinal axis XX.

[0058] Furthermore, the web 30 is arranged below the material outlet 21 along the flow direction of the process gas, which further distinguishes the second embodiment from the first embodiment. The web 30 is accordingly spaced apart from the lower edge 23a of the material outlet surface 22. In particular, the distance c is very small in the embodiment not shown and is expediently equal to zero.

[0059] In Figure 8, a cross section along section AA of Figure 6 is shown with a schematic illustration of a second embodiment of the fluidizer 1 in a horizontal position in the discharge position, with the receiving base 7 arranged in the plane Z'-Z'. The plane Z'-Z' extends parallel to the plane ZZ at a distance d. The receiving base 7 is shifted downwards by the distance d in the axial direction 33 of the central longitudinal axis XX, i.e. from the plane ZZ into the plane Z'-Z'. In the embodiment shown, the receiving base 7 rests on the web 30 and is therefore expediently arranged with its upper edge 34 and / or upper side 35 at the same height as the lower edge 23a of the material outlet 21. The upper edge 34 and / or upper side 35 of the receiving base 7 are in particular arranged tangentially to the lower edge 23a of the material outlet 21. This leaves the material outlet face 22 of the material outlet 21 completely open, so that the discharge of the processed material M' through the material channel 42 can take place in an improved manner.

[0060] Expediently, in the region of the material outlet 21, at least one discharge opening 36, in particular several discharge openings 36, are formed in the perforated receiving bottom 7, which are oriented in accordance with the illustrated arrow 37 towards the material outlet 21, so that in the discharge state the discharge of the treated material M' is additionally assisted by the process gas PG.

[0061] FIG. 9 shows an enlarged view of the portion A shown in FIG. 8, which illustrates the area of ​​the material outlet 21. The perforated receiving bottom 7 has through-openings 38 through which the process gas PG flows in order to fluidize the particulate material M to be treated in the fluidization chamber 6. The through-openings 38 can be arranged in any suitable manner, with the through-openings 38 being formed in a specific number and diameter corresponding to the specific requirements for fluidizing and / or treating the material M.

[0062] In the region of the material outlet 21 , in the perforated receiving bottom 7 , a discharge opening 36 is arranged. The process gas PG flows through the discharge openings 36 in the direction of the arrow 37 and thus assists in the efficient and rapid discharge of the treated material M' at the discharge location. It is possible for these discharge openings 36 to be arranged before the material outlet 21, for example in the shape of a circular sector. In addition, the upper edge 34 and / or the upper surface 35 of the perforated receiving bottom 7 are lowered flush up to the level of the lower edge 23a of the material outlet 21, which additionally supports and facilitates the discharge of the processed material M' based on the largest possible material outlet surface 22.

[0063] FIG. 10 shows a schematic, illustrative plan view of a third embodiment of a fluidization device 1 formed as a turbulent bed device 2, along the cross section AA. The fluidization device 1 comprises a fluidization unit 3 having a central longitudinal axis XX, in which a discharge pipe 4 is arranged with a central axis YY standing perpendicular to the longitudinal axis XX, the central axis YY and the longitudinal axis XX defining a cross section AA. The melting unit 1 is in an operating state.

[0064] In Figure 11, a cross-section along section AA of Figure 10 is shown with the receiving bottom 7 in a horizontal position, arranged in plane WW, by a schematic illustration of a third embodiment of the fluidization device 1 in an operating state.

[0065] The third embodiment of the fluidization device 1 is essentially a combination of both first embodiments. Similarly, in the third embodiment, the receiving bottom 7 is movable relative to the fluidization unit 3. In contrast to the first and second embodiments, the receiving bottom 7 of the third embodiment is adapted, on the one hand, to perform a pivoting movement about a pivot axis 29 and, on the other hand, to perform a linear movement in the axial direction 33 of the longitudinal axis XX. In the illustrated operating state, a particulate material M is processed in the fluidization chamber 6.

[0066] The pivotal movement and the linear movement of the receiving bottom 7 when moving from the operating position to the discharge position can be performed in any order, or simultaneously, so that the advantages of the pivotal movement and the linear movement can be fully utilized. In this embodiment, the pivotal movement and the linear movement are performed simultaneously.

[0067] The material discharge 19 has a shut-off device 24 that can be moved about a pivot axis 25. The shut-off device 24 is expediently configured as a flip-top 26, a valve, a rotary valve or the like. The shut-off device 24, configured as a flip-top 26 in the third embodiment, closes the material discharge 19 or opens it. 11, in which the receiving bottom 7 is located above the lower edge 23a and below the upper edge 23b of the material outlet 21, the shut-off device 24 closes the material discharge 19. As a result, neither the process gas PG nor the material M to be treated can exit or be discharged from the fluidization unit 3, in particular the fluidization chamber 6, of the fluidization device 1. In the embodiment shown, the flip-up cover 26 is pivotable about a pivot axis 25 that is arranged normal to the central axis YY.

[0068] FIG. 12 shows a cross-section along section AA of FIG. 10 with a schematic illustration of a third embodiment of the fluidizer 1.

[0069] In the discharge state, the finely divided material M' processed in the fluidization chamber 6 is discharged from the fluidization unit 3 of the fluidizer 1 through the material discharge section 19 with the material passage 42 formed as a discharge pipe 4. The shut-off device 24 is thereby pivoted about the pivot axis 25 and opens the material discharge section 19 in the discharge state—the receiving bottom 7 being at least partially located below the upper edge 23b of the material outlet 21.

[0070] The receiving bottom 7 is thereby pivoted by an angle α about the pivot axis 29, and on the other hand, this pivot axis 29 is displaced in the axial direction 33 of the longitudinal axis XX from the plane WW into a plane W'-W' oriented parallel to the plane WW. The lowering of the pivot axis 29 of the receiving bottom 7 from the plane WW into the plane W'-W' displaced by the parallel distance d from the plane WW and the simultaneous pivoting of the receiving bottom 7 about this pivot axis 29 result in an improved discharge of the treated material M' from the fluidization chamber 6. In the embodiment shown, the plane W'-W' is arranged above the central axis YY. This results in that the angle α, by which the receiving bottom 7 is pivoted about the pivot axis 29, can be kept small, thus minimizing the gap 32 that forms between the receiving bottom 7 and the fluidization unit 3, in particular the distribution chamber inner wall 11 and / or the fluidization chamber inner wall 16. This leads to a further improved discharge of the treated material M'.

[0071] In the discharge position, the upper side 35 of the receiving bottom 7 is positioned above the lower edge 23a of the material outlet 21. The material discharge section 19 with the shut-off device 24 is opened by the shut-off device 24 being pivoted about the pivot axis 25 so that the treated material M' can be discharged with the aid of the process gas PG flowing through the discharge opening 36.

[0072] The fourth embodiment of the fluidizer 1 shown in Figures 13 to 17 is essentially of the same construction as the first embodiment of the fluidizer 1 illustrated in Figures 1 to 5. The difference between both embodiments lies in the configuration of the material discharge 19 formed as a discharge pipe 4 and in the arrangement of the web 30 therewith.

[0073] FIG. 13 shows a schematic, illustrative plan view of a fourth embodiment of a fluidization device 1, which is thereby configured as a turbulent bed device 2, together with the cross section AA. The fluidization device 1 comprises a fluidization unit 3 having a central longitudinal axis XX, in which a discharge pipe 4 is arranged with a central axis YY standing perpendicular to the longitudinal axis XX, the central axis YY and the longitudinal axis XX defining a cross section AA. The melting unit 1 is in an operating state.

[0074] 14 shows the fluidizer 1 in its operating state. The receiving base 7, which separates the distribution chamber 5 from the fluidization chamber 6 and lies in the plane WW, is located above the upper edge 23b of the material outlet 21. The particulate material M is treated in the fluidization chamber 6 of the fluidization unit 3 of the fluidizer 1, in particular by the process gas PG. The process gas PG flows through the fluidization unit 3 from the fluid inlet 27, through the perforated receiving base 7, and to the fluid outlet 28.

[0075] In contrast to the first embodiment, in the fourth embodiment of Fig. 14 the material outlet 19 configured as an outlet pipe 4 has integrated therein a fluid connection 40 with a fluid connection outlet 39 for the provision of auxiliary gas HG. The fluid connection outlet 39 is arranged in the region of the material outlet surface 22 of the material outlet 21.

[0076] The material discharge 19, which is formed as a discharge pipe 4, has an insert bottom 41. The insert bottom 41 divides the material discharge 19 into a material passage 42, which transports the treated material M' from the fluidization unit 3, and a fluid passage 43, which conducts the auxiliary gas HG. A fluid connection outlet 39 is suitably arranged in the insert bottom 41, so that the auxiliary gas HG can overflow from the fluid channel 43 into the material channel 42. The fluid connection outlet 39 is formed by perforations 44 in the insert bottom 41. The fluid connection outlet 39, in particular the perforations 44, are suitably configured in such a way that the auxiliary gas HG has an outflow direction in the direction of discharge of the treated material M' from the fluidizer 1.

[0077] 15 shows the fluidization device 1 in the discharge state, in which the receiving bottom 7 is located in the discharge position, i.e., the receiving bottom 7 is moved relative to the fluidization unit 3 so that the receiving bottom is located on the web 30. In the discharge state, the receiving bottom 7 rests on the web 30. The discharge of the treated material M' is carried out through the material passage 42, with the auxiliary gas HG flowing from the fluid passage 43 through the fluid connection outlet 39 into this material passage 42 and thereby assisting the discharge of the treated material M' from the fluidization device 1.

[0078] 16 shows a schematic, diagrammatic plan view of a fourth embodiment of the fluidizer 1 corresponding to FIG. 13, in which the fluidizer 1 is in the discharge position. The receiving bottom 7 is arranged on the web 30 in a position pivoted by an angle α about the pivot axis 29, so that a gap 32 of varying width is formed between the receiving bottom 7 and the fluidization unit 3, in particular the inner distribution chamber wall 11 and / or the inner fluidization chamber wall 16. Through this gap 32 the process gas PG flows during the evacuation process so that no treated material M′ can reach into the distribution chamber 5 .

[0079] In the region of the material outlet face 22, a web 30 arranged on the inner distribution chamber wall 11 extends in the circumferential direction. The upper side 31 of the web 30 is arranged on the upper edge 45 of the insert bottom 41. The upper side 31 of the web 30 and the upper side 46 of the insert base 41 therefore form a flush, adjoining, flat upper side 31, 46. The web 30 is thereby formed sickle-shaped, in particular crescent-shaped, and has an angle β of 160°.

[0080] Figure 17 shows a schematic representation of the projection of the distribution chamber inner wall 11 with the web 30 and the material outlet 21 of the fourth embodiment of the fluidizer 1 in the discharge position. As already described in Figure 16, the upper side 31 of the web 30 is arranged tangentially to the upper edge 45 of the insert bottom 41 of the material discharge section 19. The upper side 31 of the web 30 and the upper side 46 of the insert bottom 41 therefore form flush, adjoining, flat upper sides 31, 46. The material outlet surface 22 is therefore smaller compared to the material outlet surface 22 of the first embodiment and is therefore divided into a material outlet surface 22a assigned to the material channel 42 and a material outlet surface 22b assigned to the fluid channel 43. In this case, the material outlet surface 22a is open in the discharge state by the shut-off device 24 and the material outlet surface 22b is formed as the inner wall 11 of the distribution chamber.

[0081] In the discharge position, the shut-off device 24, not shown in Figure 17, opens the material discharge section 19, in particular the material outlet face 22a, so that the treated material M' can be efficiently discharged from the fluidization chamber 6 of the fluidization unit 3 through the material passage 42 and assisted by the auxiliary gas HG flowing out of the fluid passage 43. The projection shows a sickle-shaped web 30 having an angle β of approximately 160°.

[0082] Figures 18 and 19 show yet another fifth embodiment of the fluidization device 1, whereby Figure 18 shows a schematic, illustrated plan view of the fifth embodiment of the fluidization device 1 in the operating position together with the cross section AA, and Figure 19 shows a cross section along the cross section AA illustrated in Figure 18 by means of a schematic view of the fifth embodiment of the fluidization device 1 in the discharge position with the receiving bottom 7 arranged on the pivot axis 29 in a position pivoted about the pivot axis 29 by the angle α.

[0083] The fifth embodiment is essentially of the same construction as the first embodiment, differing from both in that the web 30 is arranged below the material outlet 21, in the direction opposite to the flow direction of the process gas PG, and is spaced apart from the lower edge 23a of the material outlet surface 22.

[0084] Furthermore, both embodiments differ from one another in that the material discharge 19, which is configured as a discharge pipe 4, is provided with an associated fluid connection 40 having a fluid connection outlet 39 for the supply of auxiliary gas HG. The fluid connection outlet 39 is arranged in the discharge pipe wall 20 and is provided with a perforated covering 47. Perforations 48 passing through the perforated covering 47 are oriented so that the auxiliary gas HG flowing from the fluid connection 40 into the material passage 42 flows in the direction of discharge of the treated material M' from the fluidizer 1.

[0085] The shut-off device 24, which is configured as a flip-top 26, is arranged so as to be pivotable about a pivot axis 25, which is arranged perpendicular to the central axis YY and intersects with this central axis. In the discharge position shown in FIG. 19, the flip-top 26 opens the material discharge 19 for discharging the fluidization chamber 6. The present application relates to the invention described in the claims, but may also include the following as other aspects. 1. A method for processing a particulate material (M) in a fluidization device (1) comprising a fluidization unit (3) having a longitudinal axis (XX), the fluidization unit (3) has a perforated receiving bottom (7) dividing the fluidization unit (3) into a distribution chamber (5) and a fluidization chamber (6) located above the distribution chamber (5); the fluidization chamber (6) is provided with a material inlet (18) for the material (M) to be processed, and the distribution chamber (5) comprises a material discharge (19) equipped with a material outlet (21) for the processed material (M'), having a material outlet face (22) and lower and upper edges (23); and A shut-off device (24) closes the material discharge section (19), and The distribution chamber (5) is provided with a fluid inlet (27), and the fluidization chamber (6) is a fluid outlet (28) for a process gas (PG) that flows from the fluid inlet (27) through the perforated receiving bottom (7) to the fluid outlet (28) and fluidizes the material (M) in the fluidization chamber (6); in operation, the fluidization chamber (6) is first filled with the material (M) to be treated via the material inlet (18), and then the material (M) is treated by the process gas (PG) flowing through the fluidization chamber (6); In the method, the distribution chamber (5) comprises an at least partially circumferentially extending web (30) arranged in the region of the material outlet surface (22), and After the operating state, the receiving bottom (7), which is arranged to be movable relative to the fluidization unit (3), the receiving bottom (7) is arranged on the web (30) in such a way that, in the discharge state, a fluid connection is formed between the fluidization chamber (6) and the material outlet (21) arranged in the distribution chamber (5) passing by the receiving bottom (7), and the treated material (M') is discharged from the fluidization unit (3) through the material outlet (21), is moved to the ejection position, In the discharge state in the discharge position of the receiving bottom (7), the shut-off device (24) opens the material discharge part (19). A method characterized by: 2. The fluidization unit (3) has a pivot axis (29) extending transversely to the longitudinal axis (XX) of the fluidization unit (3), The flow receiving bottom (7) is rotatably disposed on this pivot shaft, and 2. The method according to claim 1, characterized in that the receiving base (7) is swiveled around this pivot axis by an appropriate angle of 5 to 10 degrees after the treatment of the particulate material (M). 3. The flow receiving bottom (7) is It is arranged to be movable in the axial direction (33) of the longitudinal axis (XX), and the flow-receiving bottom (7) is moved in the axial direction (33) of the longitudinal axis (XX) in the form of a linear movement until it is positioned below the lower edge (23a), 2. The method according to claim 1, 4. The method according to claim 2 or 3, characterized in that the receiving bottom (7) performs a rotational movement and a linear movement in succession in an appropriate order or simultaneously when moving to the discharge position. 5. The bottom part (7) is in the discharge position. 5. The method according to any one of claims 1 to 4, characterized in that the receiving bottom (7) is moved relative to the fluidization unit (3) so that at least a part of the receiving bottom (7) is positioned below the lower edge (23a) of the material outlet (21). 6. The bottom part (7) is in the discharge position. 6. The method according to claim 5, wherein the receiving bottom (7) is moved relative to the fluidizing unit (3) so as to be positioned below the lower edge (23a) of the material outlet (21). 7. The method according to any one of claims 1 to 6, characterized in that the material discharge section (19) has a shut-off device (24) which opens the material discharge section (19) as soon as the receiving bottom (7) is in the discharge position. 8. The method according to claim 7, characterized in that the shut-off device (24) opens the material discharge section (19) as soon as at least a portion of the receiving bottom (7) is positioned below the lower edge (23a) of the material outlet. 9. The method according to any one of claims 1 to 8, characterized in that the material discharge (19), in particular formed as a discharge pipe (4), is provided with a fluid connection (40) for the provision of an auxiliary gas (HG) with a fluid connection outlet (39), through which the auxiliary gas (HG) flows into the material discharge (19) in order to assist the discharge of the treated material (M'), at least when the shut-off device (24) opens the material discharge (19).

Claims

1. 1. A method for processing a particulate material (M) in a fluidization device (1) comprising a fluidization unit (3) having a longitudinal axis (X-X), comprising: the fluidization unit (3) has a perforated receiving bottom (7) dividing the fluidization unit (3) into a distribution chamber (5) and a fluidization chamber (6) located above the distribution chamber (5); the fluidization chamber (6) is provided with a material inlet (18) for the particulate material (M) to be treated, and the distribution chamber (5) comprises a material discharge (19) equipped with a material outlet (21) for the processed material (M'), having a material outlet face (22) and lower and upper edges (23); and A shut-off device (24) closes the material discharge (19), and The distribution chamber (5) is provided with a fluid inlet (27), and the fluidization chamber (6) is provided with: a fluid outlet (28) for a process gas (PG) that flows from the fluid inlet (27) through the perforated receiving bottom (7) to the fluid outlet (28) and fluidizes the particulate material (M) in the fluidization chamber (6); in operation, the fluidization chamber (6) is first filled with the particulate material (M) to be treated via the material inlet (18), and then the particulate material (M) is treated by the process gas (PG) flowing through the fluidization chamber (6); In the method, the distribution chamber (5) comprises an at least partially circumferentially extending web (30) arranged in the region of the material outlet surface (22), and After the operating state, the receiving bottom (7), which is arranged to be movable relative to the fluidization unit (3), the receiving bottom (7) is arranged on the web (30) in such a way that, in the discharge state, a fluid connection is formed along the receiving bottom (7) between the material outlet (21) arranged in the distribution chamber (5) and the fluidization chamber (6), and the treated material (M') is discharged from the fluidization unit (3) through the material outlet (21), is moved to the ejection position, In the discharge state in the discharge position of the receiving bottom (7), the shut-off device (24) opens the material discharge part (19); and the web (30) prevents the process gas flow from flowing around the receiving bottom (7) in the area of ​​the material outlet surface (22) in order, on the one hand, to prevent the treated material (M') from falling down and, on the other hand, to allow the treated material (M') to be discharged; the web (30) is formed in a sickle or crescent shape; the upper side of the web (30) is arranged tangentially to the material outlet face (22) of the material outlet (21) or below this material outlet (21) in the direction opposite to the flow direction of the process gas (PG), in the region of the material outlet (21), the distribution chamber (5) is at least partially free from any gaps due to the circumferentially extending webs (30); the web (30) has an angle β of between 5° and 180°; and In the discharge state, the receiving bottom (7) rests on the web (30); A method characterized by:

2. the fluidization unit (3) has a pivot axis (29) extending transversely to the longitudinal axis (X-X) of the fluidization unit (3); The bottom part (7) is rotatably arranged on this pivot shaft, and 2. A method according to claim 1, characterized in that the receiving base (7) is swiveled around this pivot axis after treatment of the particulate material (M).

3. The flow receiving bottom (7) is It is arranged to be movable in the axial direction (33) of the longitudinal axis (X-X), and Moved in the form of a linear movement in the axial direction (33) of the longitudinal axis (X-X), 2. The method of claim 1 .

4. 4. The method according to claim 2, wherein the bottom part (7) performs a pivotal movement and a linear movement in succession in any order or simultaneously when moving to the discharge position.

5. The receiving bottom (7) in the discharge position:

5. The method according to claim 1, wherein the receiving bottom (7) is moved relative to the fluidization unit (3) so that at least a part of the receiving bottom (7) is positioned below the lower edge (23a) of the material outlet (21).

6. The receiving bottom (7) in the discharge position:

6. The method according to claim 5, wherein the receiving bottom (7) is moved relative to the fluidizing unit (3) so that it is positioned below the lower edge (23a) of the material outlet (21).

7. 7. The method according to claim 1, wherein the material discharge section (19) has a shut-off device (24) which opens the material discharge section (19) as soon as the receiving bottom (7) is in the discharge position.

8. 8. The method according to claim 7, wherein the shut-off device (24) opens the material discharge section (19) as soon as at least a part of the receiving bottom (7) is positioned below the lower edge (23a) of the material outlet.

9. 9. The method according to claim 1, wherein the material discharge (19) formed as a discharge pipe (4) is integrated with a fluid connection (40) for the provision of an auxiliary gas (HG) with a fluid connection outlet (39), through which the auxiliary gas (HG) flows into the material discharge (19) to assist the discharge of the treated material (M'), at least when the shut-off device (24) opens the material discharge (19).

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