GB2070751A - An apparatus for processing a powdered or particulate product - Google Patents
An apparatus for processing a powdered or particulate product Download PDFInfo
- Publication number
- GB2070751A GB2070751A GB8103986A GB8103986A GB2070751A GB 2070751 A GB2070751 A GB 2070751A GB 8103986 A GB8103986 A GB 8103986A GB 8103986 A GB8103986 A GB 8103986A GB 2070751 A GB2070751 A GB 2070751A
- Authority
- GB
- United Kingdom
- Prior art keywords
- plate
- bed plate
- product
- openings
- corrugations
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B3/00—Drying solid materials or objects by processes involving the application of heat
- F26B3/02—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air
- F26B3/06—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried
- F26B3/08—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried so as to loosen them, e.g. to form a fluidised bed
- F26B3/092—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried so as to loosen them, e.g. to form a fluidised bed agitating the fluidised bed, e.g. by vibrating or pulsating
- F26B3/0923—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried so as to loosen them, e.g. to form a fluidised bed agitating the fluidised bed, e.g. by vibrating or pulsating by mechanical means, e.g. vibrated plate, stirrer
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L3/00—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs
- A23L3/40—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by drying or kilning; Subsequent reconstitution
- A23L3/50—Fluidised-bed drying
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
- B01J8/18—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles
- B01J8/24—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles according to "fluidised-bed" technique
- B01J8/36—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles according to "fluidised-bed" technique with fluidised bed through which there is an essentially horizontal flow of particles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
- B01J8/18—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles
- B01J8/24—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles according to "fluidised-bed" technique
- B01J8/40—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles according to "fluidised-bed" technique with fluidised bed subjected to vibrations or pulsations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
- B01J8/18—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles
- B01J8/24—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles according to "fluidised-bed" technique
- B01J8/44—Fluidisation grids
Abstract
An apparatus for processing, e.g. drying, a powdered or particulate product, such as milk powder, operates with a so-called vibrated fluid bed and comprises a bed plate (12) placed within a housing (11). This bed plate is made from thin sheet metal in which a great number of openings (55) of the "lipped" type are punched. The stiffness of the plate is obtained by means of corrugations (52, 53) which extend transversely to the flow direction of the product (P) to be treated in the apparatus. In operation the housing (11) and the bed plate (12) mounted therein are vibrated by means of a vibrator (15), and gas is passed upwardly through the bed plate openings (55) which are formed so that at least the major part of the gas flows will obtain a horizontal flow component directed towards the outlet (26) for the dried product, whereby it is obtained, that despite the transverse corrugations of the bed plate the apparatus is self-emptying, when the supply of a product (P) to the apparatus is stopped. <IMAGE>
Description
SPECIFICATION
An apparatus for processing a powdered or particulate product
Applicant's British Patent No. 1,567,706 discloses an apparatus for processing a powdered or particulate product and comprising a substantially horizontally arranged thin, corrugated bed plate having substantially parallel corrugations comprising juxtaposed ridges and valleys, a multiplicity of closely spaced, small, punched openings distributed substantially uniformly along the surfaces of the ridges and valleys of said plate, product feeding means for feeding a powdered or particulate product on to the said plate, vibrating means for vibrating said plate, gas supply means for supplying a flow of gas upwardly through each of said openings in said plate so as to fluidize said product on said plate, and product discharge means for discharging processed product from the apparatus at such a position that said fluidized product is moved along the upper surface of said plate in a direction transverse to said corrugations.
In order to obtain a fluidization of a product being processed in an apparatus of this type it is important that the fluidizing gas or air is supplied into the product as a great number of fine, closely spaced gas flows. This is especially true when the product supplied to the vibrated plate is of a sticky nature, such as humid mild powder products. As explained in applicant's above previous patent this prsb- lem may be solved by using a bed plate made froi7n a rather thin sheet metal or plate material so that closely spaced openings with small dimensions or diameters may be punched therein, and the said plate is then provided with transversely extending corrugations, whereby the necessary stiffness or rigidity of the plate is obtained without use of supporting structures between the edges of the plate.
In order to obtain a self-clearing or selfemptying function of the apparatus when the supply of product through the apparatus has been stopped, it is proposed in the above patent to direct the corrugations of the plate so as to define an acute angle with the direction of movement of the fluidized product through the apparatus and to form the bed plate with one or more channels or grooves extending along at leasi one longitudinal edge portion of the plate t has been found, however, that such chan neis or grooves extending transversely to the corrugations of the plate give rise to a sub stantally increase of the costs of production of the plate, but also to a reduction of the stiffness oe- the corrugated bed plate.
The present invention provides an apparatus o-f the type described above which is selfclearing or self-emptying even when the corrugations of the plate extend at right angles to the direction of movement of the product through the apparatus, and when the bed plate has no longitudinal channels or grooves therein.
The apparatus according to the invention is characterized in that at least the major part of the openings in the bed plate are formed so as to impart to the gas flows supplied therethrough a horizontal flow component directed towards said product discharge means.
Non-corrugated, plane bed plates provided with so-called lipped openings or perforations (in German ''Kiemenlochbleche'') providing substantially mutually parallel gas flows which are parallel with or define a small acute angle with the plane of the plate, are known. It has been found, however, that the obliquely directed gas flows promote the movement of the fluidized product along the known bed plate toward the outlet of the fluidizing apparatus to such an extent that a disadvantageous back-mixing of the product takes place. It has surprisingly been found that this tendancy of backmixing may be reduced or eliminated by combining the use of a corrugated bed plate and openings of the "lipped" type in accordance with the present invention.Furthermore, combination of a corrugated bed plate and lipped openings formed therein solves the above-mentioned self-clearing or self-emptying problem encountered in connection with a corrugated plate.
Each of said major part of openings may be formed by an incision through said plate, the plate portion adjacent to and on the side of the incision opposite to said discharge means being depressed so as to define the opening.
In a plate of a given small thickness such openings may be made substantially smaller than normal punched openings which means that the bed plate may be provided with an increased number of more closely spaced openings without requiring supply of an increased amount of fluidizing gas. The increased number of openings means a better fluidization of more difficult, sticky products.
The invention also relates to an elongated bed plate for supporting a vibrated fluidized bed, said plate being made from thin sheet metal having substantially parallel corrugations comprising juxtaposed ridges the valleys, and a multiplicity of small, closely spaced, punched openings substantially uniformly distributed along the surface of the ridges and valleys of said plate, and the bed plate according to the invention is characterized in that each of at least the major part of said openings is formed by an incision through said sheet metal, the sheet portion adjacent to and on one side of the incision being depressed, that all of said incisions are substantially mu usually parallel and non-perpendicular to the extension of said corrugations, and that all said depressed portions are located on the same side of the respective incisions.
Furthermore, the invention relates to a method of making the above bed plate, in which method a multiplicity of small, closely spaced, lipped openings are punched in thin sheet metal, and the method according to the invention is characterized in subsequently corrugating said punched sheet metal so as to form substantially parallel corrugations therein.
The invention will now be further described with reference to the drawings, wherein: Figure 1 is a perspective and partly exploded view of a preferred embodiment of the apparatus according to the invention, certain parts having been cut away,
Figure 2 is a diagrammatic sectional view of the apparatus shown in Fig. 1,
Figure 3 is a perspective fractional view in an enlarged scale and illustrating the fastening of the bed plate,
Figure 4 is a perspective view of a friction of thin sheet metal in which lipped openings have been punched,
Figure 5 is a section along the line 5-5 in
Fig. 4 shown in an enlarged scale,
Figure 6 is a section along the line 6-6 in
Fig. 4 shown in an enlarged scale, and
Figure 7 illustrates how punched sheet metal of the type shown in Fig. 4 may be corrugated so as to form a bed plate.
The fluidizing apparatus shown in the drawings is adapted to dry a powdered or particulate material or product such as milk powder which may, for example, have been made by a spray drying process, and which is still moist or humid.
The apparatus shown in Figs. 1 to 3 comprises a supporting frame structure 41 on which a container or housing 11 is mounted by means of elastic supporting means or springs 1 6. The housing 11, which is provided with inspection covers 42, has a reduced height at its ends where a product inlet 25 and a product outlet 26, respectively, are located. The product inlet 25, which may be connected to an inlet hopper 43 as shown in
Fig. 2 is preferably positioned so that the product P to be dried in the apparatus will drop substantially vertically on to a corrugated, perforated bed plate 1 2 fastened to the inner walls of the housing 11 in a substantially horizontal position.This is especially important when the product to be dried is of a sticky nature, because the product will then drop down on to a fluidized layer of partly dried product and not come into direct contact with the bed plate. A lower space or plenum chamber 14 defined below the bed plate 1 2 may be divided into two separate chambers 1 4a and 14b, respectively, by a partition wall 29, and fluidizing pressurized gas may then be supplied to the plenum chambers 14a and
14b through gas inlets 30 and 44, respectively.In order to avoid the formation of vertical gas whirl motions within the plenum chambers, which might adversely influence the gas flows through the perforations of the bed plate 1 2, the fluidizing gas is preferably supplied to the plenum chamber through the gas inlets 30 and 44 in substantially horizontal directions. The fluidizing gas or air supplied through the inlets 30 and 44 may be of different kinds and/or temperatures. However, the partition wall 29 may be dispensed with, if desired, and the fluidizing gas or air may be supplied to the plenum chamber 1 4 through a single gas inlet or conduit.
As shown in Fig. 1, the housing 11 may be provided with a cleaning or flushing system comprising a system of water conduits 45 for supplying water under pressure to spraying devices (not shown) arranged within the hous- ing 11.
The longitudinal edges of the corrugated bed plate 1 2 are fastened to the adjacent side walls of the housing 11 by means of angle members 46 and 47. These angle members have horizontally extending corrugated flanges 48 and 49, respectively, which are fastened to each other, preferably by a welded seam 50. Each longitudinal edge of the bed plate 1 2 is fastened to the adjacent free edge of the horizontal corrugated flange 48 of the angle member 46 by a welded seam 51. The width of the horizontal flange 49 is preferably smaller than that of the flange 48 in order to obtain a transverse spacing between the welded seams 50 and 51, as shown in Fig. 3.
By this fastening structure sharp corners and deep pockets, which are difficult to clean, are avoided.
The bed plate 1 2 is provided with an array of closely spaced so-called lipped openings 55 which may, for example be of the type shown in U.S. Patents Nos. 3,821,342 and 4,033,555. Each such opening may be formed by an incision through the plate and by making a depression adjacent to and on one side of the incision. The corrugated bed plate 1 2 comprises a number of juxtaposed ridges 52 and valleys 53 (Fig. 3), and the openings 55 are preferably so closely spaced that a multiplicity of openings are uniformly distributed along the surface of each ridge and valley. That means that the gas flows passing through the openings 55 from the
plenum chamber 14 will define varying angles with a horizontal plane, but each such gas flow will have a greater or smaller flow component in the longitudinal direction indicated
by an arrow 54 in Figs. 2 and 3.
When the apparatus shown in Figs. 1 to 3
is operating the product P to be dried is supplied to one end portion of the bed plate 1 2 through the hopper 43 and the inlet 25.
Heated fluidizing air or gas supplied to the
plenum chambers 14a and 14b through the conduits 30 and 44 is flowing upwardly through the openings 55 in the bed plate 1 2 as fine air jets or gas flows while the total housing 11 is being vibrated by means of a vibrator 1 5 of conventional type driven by a motor 59. Exhaust gas or air leaves the apparatus through an outlet conduit 21 communicating with the upper part of the housing 11, and dried product is discharged through the product outlet 26.
The apparatus may be divided into heating and cooling sections. In that case heated air or gas may be supplied to the plenum chamber 1 4a through the gas inlet 30 while cooling gas or air is supplied to the plenum chamber 14b through the conduit 44. The apparatus may then be provided with an additional adjustable damper 56 positioned above the partition wall 29.This additional damper may be placed in its vertical position when the apparatus is started in order to prevent that the humid product initiaily supplied to the bed plate 1 2 is moved to the cooling section of the apparatus above the plenum chamber 14b before it has been sufficiently dried. When a sufficient portion of product in the heating section of the apparatus above the plenum chamber 1 4a has been dried, the damper 56 may gradually be moved to its open position shown in Fig. 2. The thickness of the fluidized product layer above the bed plate 1 2 is thereafter substantially determined by the position of an adjustable damper 40.
When operation of the apparatus is to be stopped, feeding of product P into the hopper 43 is terminated and the damper 40 is gradually being opened while supply of fluidizing gas and vibration of the housing is being continued. The dried product will then be removed from the upper space 1 3 of the housing 11 and due to the fact that the gas or air flows through the openings 55 in the bed plate 1 2 have a horizontal component directed towards the outlet 26 any residual product will be blown out from the valleys 53 of the bed plate so that the apparatus is selfclearing. When substantially all of the dried product P has been discharged from the apparatus water or another rinsing liquid under pressure may be supplied to the water conduit 45 and lO tulle spraying devices arranged within the housing 11. Fluidizing air or gas is preferably supplied to the apparatus during the rinsing or flushing process, whereby the rinsing of the apparatus becomes more effici ent and rinsing water is blown out from the volleys cf the corrugated bed plate 1 2 when supply of rinsing water through the conduit 45 has been stopped. The bottom 57 of the plenum chamber 1 4 is preferably sloping so xbat rinsing water will collect at the lower end of the bottoi, where it may be discharged through a iiquid outlet 58.
The bed plate 1 2 may be made from thin sheet metal in which an array of closely spaced lipped openings 55 are punched in a conventional manner by providing a multiplicity of substantially parallel incisions and a depression 65 at one side of each incision as best shown in Figs. 5 and 6.
Fig. 7 shows a coil 60 of punched sheet metal as that shown in Fig. 4 to 6. This sheet metal provided with lipped openings 55 may be corrugated by means of a corrugating tool having an upper tool part 61 and a lower tool part 62, and these tool parts are provided with spaced cylindrical members 63 and 64, respectively. The punched sheet metal to be corrugated is preferably supplied to the corrugating tool 61, 62 so that the incisions in the sheet metal extend substantially parallel with the axes of the cylindrical tool members 63 and 64. The upper tool part 61 is movable between an upper position in which it is out of engagement with the sheet metal, and a lower position shown in Fig. 7 in which both tool parts are engaging with the sheet metal.
When the upper tool part 61 is in its upper position the plane sheet metal to be corrugated may be placed between tool parts 61 and 62, and when the upper tool part 61 is thereafter moved to its lower position as indicated by an arrow in Fig. 7 the cylindrical members 63 and 64 form corresponding juxtaposed ridges and valleys in the sheet metal as shown in Fig. 7. By intermittently moving sheet metal to the right in Fig. 7 2 corrugated plate having the desired length may be formed. The pressure which must be applied to the punched sheet metal by the cylindrical members during the corrugating process is not of such value that any of the lipped openings 55 will be deformed to any substantial extent.After corrugation of the sheet metal forming the bed plate 1 2 the upper surface of the bed plate (the surface in which the depression 65 are formed, which is the upper surface in Figs. 3 and 5) is polished, for example by electropolishing or glass blasting (blasting with small spherical glass particles).
The upper surface of the bed plate 1 2 may advantageously be glass blasted after having been mounted within the housing 11.
EXAMPLE In a practical embodiment the corrugated bed plate 1 2 is made from a plane sheet of stainless steel in which a plurality of equidistant linear rows of lipped openings 55 are punched, vide Figs. 3 and 4. The spacing s between adjacent linear rows is approximately 4 mm, and the openings of adjacent rows are offset in relation to each other. The distance d between adjacent openings in each linear row is about 5 mm. Each lipped opening 55 is made by an incision having a length 1 of about 1.6 mrui and extending transversely to said linear row, and by a depression 65 at one side of the incision having a maximum depth hat this incision at about 0.16 to 0.2 mm. The plane plate provided with lipped openings in the manner described is thereafter provided with corrugations having juxtaposed ridges 52 and valleys 53 extending substantially parallel with the incisions in the plate as illustrated in Fig. 7.
The wave length L (the distance between the tops of adjacent ridges or the bottoms of adjacent valleys) of the corrugations of the plate is approximately 1 40 mm, and the amplitude a (the vertical distance between the tops of the ridges and the bottoms of the valleys) is about 28 mm.
When a bed plate of this type is used in an apparatus corresponding to that shown in
Figs. 1 to 3 for drying milk, which has been partly dried in a conventional spray drying system, the housing 11 is vibrated at a frequency of 500 to 800 cycles per minute, depending on the fat content of the milk product. Normally, a small vacuum of about 2 to 5 mm column of water is maintained in the upper space 1 3 of the housing 11 while a pressure of about 1 20 mm column of water above atmospheric pressure is maintained in the plenum chamber 14 below the bed plate 1 2. However, these pressure values depend to some extent on the type of product being dried.
It should be understood that various amendments of the embodiments described above may be made without departing from the scope of the invention as defined in the appended claims. As an example, the bed plate 1 2 may be provided with obliquely extending corrugations or corrugations forming a herringbone pattern as shown in Figs. 5 and 6 of applicant's above patent. Furthermore, the lipped openings 55 illustrated in
Fig. 3 may be formed in any suitable manner provided that the gas flows through these openings are directed so that they obtain a flow component tending to move the product towards the outlet 26 of the apparatus.
Claims (11)
1. An apparatus for processing a powdered or particulate product, said apparatus comprising:
a substantially horizontally arranged, thin, corrugated bed plate having substantially parallel corrugations comprising juxtaposed ridges and valleys and a multiplicity of closely spaced small punched openings, distributed substantially uniformly along the surfaces of the ridges and valleys of said plate;
product feeding means for feeding a powdered or particulate product onto said plate;
vibrating means for vibrating said plate;
gas supply means for supplying a flow of gas upwardly through each of said openings in said plate so as to fluidize said product on said plate; and
product discharge means for discharging processed product from the apparatus at such a position that said fluidized product is moved along the upper surface of said plate in a direction transverse to said corrugations,
characterized in that at least the major part of the openings (55) in the bed plate (12) are formed so as to impart to the gas flows supplied therethrough a horizontal flow component directed towards said product discharge means (26, 40).
2. An apparatus according to claim 1, characterized in that each of said major part of openings (55) is formed by an incision through said plate, the plate portion adjacent to and on the side of the incision being opposite to said discharge means (26, 40) being depressed so as to define the opening.
3. An apparatus according to claim 1 or 2 wherein said gas supply means comprise a plenum chamber having a top wall comprising said bed plate, and a gas inlet communicating with said plenum chamber for supplying pressurized gas thereto.
characterized in that the gas inlet (30, 44) is adapted to supply gas into the plenum chamber (14) in a substantially horizontal direction and transversely to said horizontal flow component.
4. An apparatus according to claim 3, further comprising a housing containing,said bed plate and defining said plenum chamber below and a fluidizing chamber above said plate, respectively, characterized in that the corrugations (52, 53) of the bed plate (12) extend between opposite longitudinal edges of the plate, each corrugated longitudinal edge portion of the bed plate being fastened to a correspondingly corrugated flange (48) extending from the inner wall of said housing (11).
5. An apparatus according to claim 4, characterized in that said corrugated flange (48) is one flange or web of a first angle member (46) fastened to the inner wall of said housing, a second angle member (47) having a second corrugated flange or web (49) being fastened to said inner wall with said second corrugated flange in engagement with the first-mentioned corrugated flange (48).
6. An elongated bed plate for supporting a vibrated fluidized bed, said plate being made from thin sheet metal having substantially parallel corrugations comprising juxtaposed ridges and valleys, and a multiplicity of small, closely spaced, punched openings substantially uniformly distributed along the surfaces of the ridges and valleys of said plate,
characterized in that each of at least the major part of said openings (55) is formed by an incision through said sheet metal, the sheet portion adjacent to and on one side of the incision being depressed, that all of said incisions are substantially mutually parallel and non-perpendicular to the extension of said corrugations, and that all said depressed sheet portions are located on the same side of the respective incisions.
7. A bed plate according to claim 6, characterized in that said incisions extend substan tially parallel with the corrugations (52, 53).
8. A method of making a bed plate according to claim 6 or 7, wherein a multiplicity of small, closely spaced lipped openings are punched in thin sheet metal,
characterized in subsequently corrugating said punched sheet metal so as to form substantially parallel corrugations therein.
9. An apparatus for processing a powdered or particulate product, substantially as hereinbefore described with reference to, and as illustrated in, the accompanying drawings.
10. An apparatus for processing a powdered or particulate product, substantially as described in the Example.
11. An elongated bed plate for supporting a vibrated fluidized bed, the bed plate being substantially as hereinbefore described with reference to, and as illustrated in, the accompanying drawings.
1 2. An elongated bed plate substantially as hereinbefore described in the Example.
1 3. A method of making an elongated bed plate for supporting a vibrated fluidized bed, the method being substantially as hereinbefore described with reference to Figs. 4 to 7 of the accompanying drawings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DK68580A DK68580A (en) | 1980-02-15 | 1980-02-15 | DEVICE FOR TREATMENT OF A POWDER OR PARTICULATE PRODUCT |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB2070751A true GB2070751A (en) | 1981-09-09 |
| GB2070751B GB2070751B (en) | 1984-01-18 |
Family
ID=8096370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8103986A Expired GB2070751B (en) | 1980-02-15 | 1981-02-10 | Apparatus for processing a powdered or particulate product |
Country Status (3)
| Country | Link |
|---|---|
| DK (1) | DK68580A (en) |
| FR (1) | FR2477032A1 (en) |
| GB (1) | GB2070751B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1983001560A1 (en) * | 1981-10-27 | 1983-05-11 | Brooks, Derrick, William | Conditioning apparatus |
| DK149737B (en) * | 1983-09-23 | 1986-09-22 | Niro Atomizer As | Method and apparatus for the treatment of a powdered or particulate material with gas to form a fluidized bed and bed plate for use in the apparatus |
| GB2203929A (en) * | 1987-04-24 | 1988-11-02 | Koerber Ag | Apparatus for conditioning tobacco and like fibrous materials |
| EP0441092A1 (en) * | 1990-02-08 | 1991-08-14 | Niro Holding A/S | A method and apparatus for heat treating a particulate product |
| EP0481799A1 (en) * | 1990-10-19 | 1992-04-22 | Stork Protecon B.V. | Apparatus for conditioning divided or particulate material |
| CN102538402A (en) * | 2011-12-29 | 2012-07-04 | 宝鸡阜丰生物科技有限公司 | Sodium glutamate drying fluidized bed |
| WO2014189384A3 (en) * | 2013-05-22 | 2015-04-02 | Multivector As | A method, a system and devices for processing at least one substance into a dried, fragmented, fluidized end product |
| CN107192219A (en) * | 2017-07-27 | 2017-09-22 | 武汉江汉化工设计有限公司 | A kind of industrial grade monoammonium phosphate fluidized bed drying system and its control method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1293023A (en) * | 1961-03-27 | 1962-05-11 | Improvements to fluidization devices for the treatment of divided products | |
| US3861058A (en) * | 1972-12-18 | 1975-01-21 | California Pellet Mill Co | Fluidized bed grain processor |
| DK150716C (en) * | 1976-12-01 | 1987-10-26 | Niro Atomizer As | PROCEDURE FOR TREATING A POWDER OR PARTICULATED PRODUCT AND APPARATUS FOR USE IN EXERCISING THE PROCEDURE |
-
1980
- 1980-02-15 DK DK68580A patent/DK68580A/en not_active Application Discontinuation
-
1981
- 1981-02-10 GB GB8103986A patent/GB2070751B/en not_active Expired
- 1981-02-13 FR FR8102826A patent/FR2477032A1/en active Granted
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1983001560A1 (en) * | 1981-10-27 | 1983-05-11 | Brooks, Derrick, William | Conditioning apparatus |
| DK149737B (en) * | 1983-09-23 | 1986-09-22 | Niro Atomizer As | Method and apparatus for the treatment of a powdered or particulate material with gas to form a fluidized bed and bed plate for use in the apparatus |
| GB2203929A (en) * | 1987-04-24 | 1988-11-02 | Koerber Ag | Apparatus for conditioning tobacco and like fibrous materials |
| GB2203929B (en) * | 1987-04-24 | 1991-05-22 | Koerber Ag | Apparatus for conditioning tobacco and like fibrous materials |
| EP0441092A1 (en) * | 1990-02-08 | 1991-08-14 | Niro Holding A/S | A method and apparatus for heat treating a particulate product |
| US5133137A (en) * | 1990-02-08 | 1992-07-28 | Niro A/S | Method and apparatus for heat treating a particulate product |
| EP0481799A1 (en) * | 1990-10-19 | 1992-04-22 | Stork Protecon B.V. | Apparatus for conditioning divided or particulate material |
| US5279046A (en) * | 1990-10-19 | 1994-01-18 | Stork Protecon B.V. | Apparatus for conditioning divided or particulate material |
| CN102538402A (en) * | 2011-12-29 | 2012-07-04 | 宝鸡阜丰生物科技有限公司 | Sodium glutamate drying fluidized bed |
| WO2014189384A3 (en) * | 2013-05-22 | 2015-04-02 | Multivector As | A method, a system and devices for processing at least one substance into a dried, fragmented, fluidized end product |
| US10260803B2 (en) | 2013-05-22 | 2019-04-16 | Waister As | Method, a system and devices for processing at least one substance in a dried, fragmented, fluidized end product |
| CN107192219A (en) * | 2017-07-27 | 2017-09-22 | 武汉江汉化工设计有限公司 | A kind of industrial grade monoammonium phosphate fluidized bed drying system and its control method |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2477032A1 (en) | 1981-09-04 |
| GB2070751B (en) | 1984-01-18 |
| DK68580A (en) | 1981-08-16 |
| FR2477032B1 (en) | 1985-01-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |