EP0595378A1 - Reactor for drying aqueous solids in a heated fluidized bed and process for operating the reactor - Google Patents
Reactor for drying aqueous solids in a heated fluidized bed and process for operating the reactor Download PDFInfo
- Publication number
- EP0595378A1 EP0595378A1 EP93202451A EP93202451A EP0595378A1 EP 0595378 A1 EP0595378 A1 EP 0595378A1 EP 93202451 A EP93202451 A EP 93202451A EP 93202451 A EP93202451 A EP 93202451A EP 0595378 A1 EP0595378 A1 EP 0595378A1
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- European Patent Office
- Prior art keywords
- reactor
- fluidized bed
- distributor surface
- vapor
- distributor
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Classifications
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/001—Handling, e.g. loading or unloading arrangements
- F26B25/002—Handling, e.g. loading or unloading arrangements for bulk goods
Definitions
- the invention relates to a reactor for drying a water-containing solid in a heated fluidized bed, a vapor collecting space with a vapor outlet being located above the fluidized bed and a feed device for the water-containing solid being arranged above the vapor collecting space, and a method for operating the reactor.
- Reactors of this type are known, e.g. described in German patent 29 01 723 and in the corresponding US patent 4,295,281 as well as in German patent 36 44 806 and in DE-A-39 43 366. These publications do not deal with how to apply the water-containing solids, which preferably form lumps on delivery, to the fluidized bed as finely and uniformly as possible.
- a rotating, plate-like disk is known from US Pat. No. 2,412,057 in order to eject material to be dried to the side from an inlet channel.
- the invention has for its object to separate the water-containing solids in the vapor collection space in a simple and effective manner in the reactor mentioned at the outset in such a way that larger lumps are destroyed.
- the solids should be distributed as evenly as possible over the top of the fluidized bed. According to the invention, this is achieved in that an approximately conical distributor surface which can be rotated about a vertical axis is arranged in the vapor collecting space below the feed device and has a slope corresponding to an angle of 25 to 70 ° measured against the horizontal and at least one recess which is 30 to 90%. the theoretical total area of the distributor area.
- the approximately conical distributor surface is not closed, but has one or more recesses through which a part of the solids comes from the distributor surface. These solids falling through the recess or recesses are moved less far radially outwards by the rotating distributor surface, so that the central region of the fluidized bed lying below the distributor surface can also be acted upon fairly uniformly with solids in the same way as the outer regions. Nevertheless, the distributor surface also acts as a baffle here, which breaks up larger agglomerates of the solids falling from above.
- the vapor collection space is usually at least 80% and often about 100% saturated with water vapor.
- This water vapor comes into contact with the water-containing, cold solids above the distributor surface and condenses on its surface. This favors the formation of agglomerates, which is counteracted by the rotating distributor surface.
- the speed of rotation is usually in the range of 20 to 250 revolutions per minute.
- the granular solids to be dried may e.g. to deal with coal, lignite, sand, ores or sludges of all kinds.
- the distributor surface preferably has a largest diameter of 0.1 to 0.4 times the diameter of the top of the fluidized bed.
- protrusions can be, for example, cams, teeth or ribs.
- water-containing, granular solids are dried in a fluidized bed (2) which is indirectly heated by a heat exchanger device (3).
- Superheated steam is preferably used as the fluidizing medium, which is brought in through the line (4) and passed into the fluidized bed (2) via a nozzle grate (5), which can be formed, for example, by horizontal pipes.
- the water vapor formed by the drying collects together with the fluidizing medium in the vapor collecting space (8) above the fluidized bed (2), the vapor-rich atmosphere being drawn off through the vapor outlet (9). Solids that have largely dried are removed at the lower end of the reactor (1) through a metering lock (10).
- the solids to be dried are passed through an inlet lock (11) into a storage chamber (12), the bottom (13) of which has an outlet opening (14), cf. also Fig. 2.
- a sickle pusher (16) which is moved above the bottom (13) in the direction of arrow (15), pushes the solids to the outlet (14).
- the vertical shaft (18) is also guided through the outlet (14), at the lower end of which an approximately conical distributor surface (19) is attached.
- the distributor surface (19) can be driven in a manner known per se, not shown, by means of a drive about a vertical axis with adjustable speed via the shaft (18) guided to the outside.
- the rotary movement of the distributor surface (19) takes place independently of the movement of the sickle slide (16), to which a separate drive (not shown) belongs.
- FIG. 3 and 4 show one possibility of the shape of the distributor surface (19), with FIG. 3 being a perspective 4 and a plan view seen in the direction of arrow (B) in FIG. 3.
- the conical distributor surface (19) has two recesses (20a) and (20b), so that the surface (19) is partially perforated.
- the shape of these recesses can vary within a wide range, and a distributor surface can also have only one or more recesses. Without these recesses, the largest diameter of the distributor surface (19) would describe a circle, cf. Fig. 4, where this circle is indicated by dashed lines in the region of the recesses (20a) and (20b).
- the closed circle thus formed limits the total theoretical area of the distributor area (19); the recesses are not taken into account for this theoretical total area.
- the recesses themselves comprise an area which corresponds to 30 to 90% of the theoretical total area of the distributor area (19).
- the size and shape of the recesses (20a) and (20b) can be selected differently, so that the design of the distributor surface can be adapted to different tasks.
- the distributor surface (19) usually has a largest diameter (D), cf. Fig. 4, from 0.1 to 0.4 times the diameter of the top of the fluidized bed (2).
- Fig. 5 shows a slightly different shaped distributor surface (19a), which is preferably rotated in the direction of arrow (22) around the vertical shaft (18).
- the recesses (23a) and (23b) are delimited on the outside by the dashed circular line which marks the largest diameter.
- This distributor surface (19a) also shows how the top of the distributor surface e.g. can be equipped with cams (23) or ribs (24), on the one hand to reinforce the breaking up of lumps of solid when rotating the surface (19a) and on the other hand to influence the solids flow. Projections of this type can improve the uniform distribution of the solids on the fluidized bed (2).
Abstract
Der Reaktor (1) besitzt über dem Wirbelbett (2) einen Brüdensammelraum (8) mit einem Brüdenauslaß (9). Über dem Brüdensammelraum (8) ist eine Zufuhreinrichtung für den wasserhaltigen Feststoff angeordnet. Im Brüdensammelraum (8) unterhalb der Zufuhreinrichtung ist eine um eine senkrechte Achse (18) drehbare, etwa konische Verteilerfläche (19) angeordnet. Die Verteilerfläche (19) weist ein Gefälle entsprechend einem gegen die Horizontale gemessenen Winkel von 25 bis 70° und mindestens eine Ausnehmung (20a,20b) auf. Die Ausnehmung (20a,20b) umfaßt 30 bis 90 % der theoretischen Gesamtfläche der Verteilerfläche (19). Üblicherweise wird die Verteilerfläche (19) mit 20 bis 250 Umdrehungen pro Minute gedreht. <IMAGE>The reactor (1) has a vapor collecting space (8) with a vapor outlet (9) above the fluidized bed (2). A feed device for the water-containing solid is arranged above the vapor collecting space (8). An approximately conical distributor surface (19) which is rotatable about a vertical axis (18) is arranged in the vapor collecting space (8) below the feed device. The distributor surface (19) has a slope corresponding to an angle of 25 to 70 ° measured against the horizontal and at least one recess (20a, 20b). The recess (20a, 20b) comprises 30 to 90% of the theoretical total area of the distributor area (19). The distributor surface (19) is usually rotated at 20 to 250 revolutions per minute. <IMAGE>
Description
Die Erfindung betrifft einen Reaktor zum Trocknen eines wasserhaltigen Feststoffes in einem beheizten Wirbelbett, wobei sich im Reaktor über dem Wirbelbett ein Brüdensammelraum mit einem Brüdenauslaß befindet und über dem Brüdensammelraum eine Zufuhreinrichtung für den wasserhaltigen Feststoff angeordnet ist, sowie ein Verfahren zum Betreiben des Reaktors.The invention relates to a reactor for drying a water-containing solid in a heated fluidized bed, a vapor collecting space with a vapor outlet being located above the fluidized bed and a feed device for the water-containing solid being arranged above the vapor collecting space, and a method for operating the reactor.
Reaktoren dieser Art sind bekannt, sie sind z.B. im deutschen Patent 29 01 723 und im dazu korrespondierenden US-Patent 4 295 281 sowie im deutschen Patent 36 44 806 und in DE-A-39 43 366 beschrieben. In diesen Veröffentlichungen wird nicht darauf eingegangen, wie man die wasserhaltigen Feststoffe, die bei der Anlieferung bevorzugt Klumpen bilden, möglichst feinteilig und gleichmäßig auf das Wirbelbett aufgibt. Aus dem US-Patent 2 412 057 ist eine rotierende, tellerartige Scheibe bekannt, um zu trocknendes Gut von einem Zulaufkanal zur Seite auszuschleudern.Reactors of this type are known, e.g. described in German patent 29 01 723 and in the corresponding US patent 4,295,281 as well as in German patent 36 44 806 and in DE-A-39 43 366. These publications do not deal with how to apply the water-containing solids, which preferably form lumps on delivery, to the fluidized bed as finely and uniformly as possible. A rotating, plate-like disk is known from US Pat. No. 2,412,057 in order to eject material to be dried to the side from an inlet channel.
Der Erfindung liegt die Aufgabe zugrunde, beim eingangs genannten Reaktor die wasserhaltigen Feststoffe auf einfache und wirksame Weise im Brüdensammelraum so zu zerteilen, daß größere Klumpen zerstört werden. Gleichzeitig sollen die Feststoffe möglichst gleichmäßig auf die Oberseite des Wirbelbettes verteilt werden. Erfindungsgemäß gelingt dies dadurch, daß im Brüdensammelraum unterhalb der Zufuhreinrichtung eine um eine senkrechte Achse drehbare, etwa konische Verteilerfläche angeordnet ist, die ein Gefälle entsprechend einem gegen die Horizontale gemessenen Winkel von 25 bis 70° und mindestens eine Ausnehmung aufweist, welche 30 bis 90 % der theoretischen Gesamtfläche der Verteilerfläche umfaßt.The invention has for its object to separate the water-containing solids in the vapor collection space in a simple and effective manner in the reactor mentioned at the outset in such a way that larger lumps are destroyed. At the same time, the solids should be distributed as evenly as possible over the top of the fluidized bed. According to the invention, this is achieved in that an approximately conical distributor surface which can be rotated about a vertical axis is arranged in the vapor collecting space below the feed device and has a slope corresponding to an angle of 25 to 70 ° measured against the horizontal and at least one recess which is 30 to 90%. the theoretical total area of the distributor area.
Die etwa konische Verteilerfläche ist nicht geschlossen, sondern weist eine oder mehrere Ausnehmungen auf, durch welche ein Teil der Feststoffe von der Verteilerfläche kommend hindurchtritt. Diese durch die Ausnehmung oder Ausnehmungen fallenden Feststoffe werden durch die rotierende Verteilerfläche weniger weit radial nach außen bewegt, so daß auch der unter der Verteilerfläche liegende Zentralbereich des Wirbelbettes in gleicher Weise wie die Außenbereiche ziemlich gleichmäßig mit Feststoffen beaufschlagt werden kann. Trotzdem wirkt auch hierbei die Verteilerfläche als Prallfläche, welche insbesondere größere Agglomerate der von oben herabfallenden Feststoffe aufbricht.The approximately conical distributor surface is not closed, but has one or more recesses through which a part of the solids comes from the distributor surface. These solids falling through the recess or recesses are moved less far radially outwards by the rotating distributor surface, so that the central region of the fluidized bed lying below the distributor surface can also be acted upon fairly uniformly with solids in the same way as the outer regions. Nevertheless, the distributor surface also acts as a baffle here, which breaks up larger agglomerates of the solids falling from above.
Der Brüdensammelraum ist üblicherweise zu mindestens 80 % und häufig zu etwa 100 % mit Wasserdampf gesättigt. Dieser Wasserdampf kommt oberhalb der Verteilerfläche mit den wasserhaltigen, kalten Feststoffen in Berührung und kondensiert an ihrer Oberfläche. Dies begünstigt die Agglomeratbildung, welcher man durch die rotierende Verteilerfläche entgegenwirkt. Durch geeignete Wahl der Umdrehungsgeschwindigkeit der Verteilerfläche läßt sich ihre Wirkung an die Aufgaben, die der jeweilige Feststoff stellt, anpassen. Zumeist liegen die Umdrehungsgeschwindigkeiten im Bereich von 20 bis 250 Umdrehungen pro Minute.The vapor collection space is usually at least 80% and often about 100% saturated with water vapor. This water vapor comes into contact with the water-containing, cold solids above the distributor surface and condenses on its surface. This favors the formation of agglomerates, which is counteracted by the rotating distributor surface. Through a suitable choice of the speed of rotation of the distributor surface, its effect can be adapted to the tasks that the respective solid poses. The speed of rotation is usually in the range of 20 to 250 revolutions per minute.
Bei den zu trocknenden körnigen Feststoffen kann es sich z.B. um Kohle, Braunkohle, Sand, Erze oder auch um Schlämme der verschiedensten Art handeln.The granular solids to be dried may e.g. to deal with coal, lignite, sand, ores or sludges of all kinds.
Vorzugsweise hat die Verteilerfläche einen größten Durchmesser vom 0,1- bis 0,4-fachen des Durchmessers der Oberseite des Wirbelbettes. Um die Funktion der Verteilerfläche zum möglichst gleichmäßigen Ausbreiten der Feststoffe auf dem Wirbelbett zu verbessern und um gleichzeitig auch das Zerbrechen von Klumpen zu intensivieren, kann man die Oberfläche der Verteilerfläche mit Vorsprüngen besetzen. Bei solchen Vorsprüngen kann es sich z.B. um Nocken, Zähne oder Rippen handeln.The distributor surface preferably has a largest diameter of 0.1 to 0.4 times the diameter of the top of the fluidized bed. To improve the function of the distributor surface for spreading the solids on the fluidized bed as evenly as possible and at the same time to break up lumps intensify, you can cover the surface of the distributor surface with protrusions. Such projections can be, for example, cams, teeth or ribs.
Ausgestaltungsmöglichkeiten des Reaktors und Einzelheiten seines Betriebs werden mit Hilfe der Zeichnung erläutert. Es zeigt:
- Fig. 1
- einen Längsschnitt durch den Reaktor in schematischer Darstellung,
- Fig. 2
- einen Schnitt nach der Linie A-A durch die Vorratskammer der Fig. 1,
- Fig. 3
- die Ansicht einer ersten Form der Verteilerfläche in perspektivischer Darstellung,
- Fig. 4
- eine Draufsicht auf die Verteilerfläche der Fig. 3, in Richtung des Pfeils B gesehen und
- Fig. 5
- die Draufsicht auf eine weitere Form der Verteilerfläche.
- Fig. 1
- 2 shows a longitudinal section through the reactor in a schematic representation,
- Fig. 2
- 2 shows a section along line AA through the pantry of FIG. 1,
- Fig. 3
- the view of a first form of the distributor surface in a perspective view,
- Fig. 4
- a plan view of the distribution surface of FIG. 3, seen in the direction of arrow B and
- Fig. 5
- the top view of another form of the distributor surface.
Im Reaktor (1) werden wasserhaltige, körnige Feststoffe in einem Wirbelbett (2) getrocknet, welches durch eine Wärmetauscher-Einrichtung (3) indirekt beheizt wird. Als Wirbelmedium dient bevorzugt überhitzter Wasserdampf, den man durch die Leitung (4) heranführt und über einen Düsenrost (5), der z.B. durch horizontale Rohre gebildet sein kann, in das Wirbelbett (2) leitet. Der durch die Trocknung gebildete Wasserdampf sammelt sich zusammen mit dem Wirbelmedium im Brüdensammelraum (8) über dem Wirbelbett (2), wobei man die wasserdampfreiche Atmosphäre durch den Brüdenauslaß (9) abzieht. Weitgehend getrocknete Feststoffe entnimmt man am unteren Ende des Reaktors (1) durch eine Dosierschleuse (10).In the reactor (1), water-containing, granular solids are dried in a fluidized bed (2) which is indirectly heated by a heat exchanger device (3). Superheated steam is preferably used as the fluidizing medium, which is brought in through the line (4) and passed into the fluidized bed (2) via a nozzle grate (5), which can be formed, for example, by horizontal pipes. The water vapor formed by the drying collects together with the fluidizing medium in the vapor collecting space (8) above the fluidized bed (2), the vapor-rich atmosphere being drawn off through the vapor outlet (9). Solids that have largely dried are removed at the lower end of the reactor (1) through a metering lock (10).
Die zu trocknenden Feststoffe gibt man durch eine Einlaßschleuse (11) in eine Vorratskammer (12), deren Boden (13) eine Auslaßöffnung (14) aufweist, vgl. auch Fig. 2. Ein Sichelschieber (16), der über dem Boden (13) in Richtung des Pfeils (15) bewegt wird, schiebt die Feststoffe zum Auslaß (14). Im Abstand über dem Auslaß (14) befindet sich ein starrer, konischer Schirm (17), vgl. Fig. 1, der verhindert, daß die Feststoffe der Vorratskammer (12) unkontrolliert durch den Auslaß (14) nach unten fallen. Durch den Auslaß (14) ist auch die senkrechte Welle (18) geführt, an deren unterem Ende eine etwa konische Verteilerfläche (19) befestigt ist. Über die nach außen geführte Welle (18) kann die Verteilerfläche (19) in an sich bekannter, nicht dargestellter Weise durch einen Antrieb um eine vertikale Achse mit regulierbarer Geschwindigkeit angetrieben werden. Die Drehbewegung der Verteilerfläche (19) erfolgt unabhängig von der Bewegung des Sichelschiebers (16), zu welchem ein eigener, nicht dargestellter Antrieb gehört.The solids to be dried are passed through an inlet lock (11) into a storage chamber (12), the bottom (13) of which has an outlet opening (14), cf. also Fig. 2. A sickle pusher (16), which is moved above the bottom (13) in the direction of arrow (15), pushes the solids to the outlet (14). At a distance above the outlet (14) there is a rigid, conical screen (17), cf. Fig. 1, which prevents the solids of the pantry (12) from falling uncontrollably through the outlet (14). The vertical shaft (18) is also guided through the outlet (14), at the lower end of which an approximately conical distributor surface (19) is attached. The distributor surface (19) can be driven in a manner known per se, not shown, by means of a drive about a vertical axis with adjustable speed via the shaft (18) guided to the outside. The rotary movement of the distributor surface (19) takes place independently of the movement of the sickle slide (16), to which a separate drive (not shown) belongs.
Um zu verhindern, daß wasserdampfreiche Brüden vom Brüdensammelraum (8) durch den Auslaß (14) in störender Menge nach oben in die Vorratskammer (12) eindringen, kann man durch Zufuhr z.B. von Luft oder Stickstoff durch die Leitung (20) in der Kammer (12) einen etwa gleichen Druck wie im Brüdensammelraum (8) aufrechterhalten.In order to prevent water vapor-rich vapors from the vapor collecting space (8) from entering through the outlet (14) in a disturbing amount upwards into the storage chamber (12), e.g. maintain air or nitrogen through the line (20) in the chamber (12) at approximately the same pressure as in the vapor collecting chamber (8).
Die vom Sichelschieber (16) zum Auslaß (14) bewegten wasserhaltigen Feststoffe fallen nach unten und treffen auf die rotierende Verteilerfläche (19). Dadurch werden Feststoff-Agglomerate zerbrochen und gleichzeitig wird durch die Formgebung der Verteilerfläche (19) dafür gesorgt, daß die Feststoffe möglichst gleichmäßig auf die Oberseite des Wirbelbettes (2) verteilt werden.The water-containing solids moved from the sickle slide (16) to the outlet (14) fall down and hit the rotating distributor surface (19). As a result, solid agglomerates are broken up and, at the same time, the shape of the distributor surface (19) ensures that the solids are distributed as evenly as possible over the top of the fluidized bed (2).
Eine Möglichkeit der Form der Verteilerfläche (19) zeigen die Fig. 3 und 4, dabei ist Fig. 3 eine perspektivische Ansicht und Fig. 4 eine Draufsicht in Richtung des Pfeils (B) in Fig. 3 gesehen. Die konische Verteilerfläche (19) weist zwei Ausnehmungen (20a) und (20b) auf, so daß die Fläche (19) teilweise durchbrochen ist. In der Praxis kann die Form dieser Ausnehmungen in einem weiten Bereich variieren, auch kann eine Verteilerfläche nur eine oder aber mehrere Ausnehmungen aufweisen. Ohne diese Ausnehmungen würde der größte Durchmesser der Verteilerfläche (19) einen Kreis beschreiben, vgl. Fig. 4, wo dieser Kreis im Bereich der Ausnehmungen (20a) und (20b) gestrichelt angedeutet ist. Der so gebildete geschlossene Kreis begrenzt die theoretische Gesamtfläche der Verteilerfläche (19); bei dieser theoretischen Gesamtfläche werden die Ausnehmungen nicht berücksichtigt. Die Ausnehmungen selbst umfassen eine Fläche, welche 30 bis 90 % der theoretischen Gesamtfläche der Verteilerfläche (19) entspricht. Die Größe und Form der Ausnehmungen (20a) und (20b) kann verschieden gewählt sein, damit kann man die Ausgestaltung der Verteilerfläche an unterschiedliche Aufgaben anpassen. Üblicherweise hat die Verteilerfläche (19) einen größten Durchmesser (D), vgl. Fig. 4, vom 0,1- bis 0,4-fachen des Durchmessers der Oberseite des Wirbelbettes (2).3 and 4 show one possibility of the shape of the distributor surface (19), with FIG. 3 being a
Fig. 5 zeigt eine etwas anders geformte Verteilerfläche (19a), welche man bevorzugt in Richtung des Pfeils (22) um die vertikale Welle (18) dreht. Die Ausnehmungen (23a) und (23b) werden nach außen durch die gestrichelte Kreislinie begrenzt, die den größten Durchmesser markiert. Bei dieser Verteilerfläche (19a) ist auch dargestellt, wie man die Oberseite der Verteilerfläche z.B. mit Nocken (23) oder Rippen (24) besetzen kann, um einerseits das Aufbrechen von Feststoff-Klumpen beim Drehen der Fläche (19a) zu verstärken und um andererseits die Feststofführung zu beeinflussen. Durch Vorsprünge solcher Art kann man die gleichmäßige Verteilung der Feststoffe auf das Wirbelbett (2) verbessern.Fig. 5 shows a slightly different shaped distributor surface (19a), which is preferably rotated in the direction of arrow (22) around the vertical shaft (18). The recesses (23a) and (23b) are delimited on the outside by the dashed circular line which marks the largest diameter. This distributor surface (19a) also shows how the top of the distributor surface e.g. can be equipped with cams (23) or ribs (24), on the one hand to reinforce the breaking up of lumps of solid when rotating the surface (19a) and on the other hand to influence the solids flow. Projections of this type can improve the uniform distribution of the solids on the fluidized bed (2).
Claims (4)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4232110A DE4232110A1 (en) | 1992-09-25 | 1992-09-25 | Reactor for drying water-containing solids in a heated fluidized bed and process for operating the reactor |
| DE4232110 | 1992-09-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0595378A1 true EP0595378A1 (en) | 1994-05-04 |
| EP0595378B1 EP0595378B1 (en) | 1996-11-20 |
Family
ID=6468799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP93202451A Expired - Lifetime EP0595378B1 (en) | 1992-09-25 | 1993-08-19 | Reactor for drying aqueous solids in a heated fluidized bed and process for operating the reactor |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US5325607A (en) |
| EP (1) | EP0595378B1 (en) |
| AU (1) | AU661197B2 (en) |
| CA (1) | CA2101368A1 (en) |
| DE (2) | DE4232110A1 (en) |
| ES (1) | ES2094467T3 (en) |
| GR (1) | GR3021754T3 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001069150A1 (en) * | 2000-03-13 | 2001-09-20 | Energy Engineering International (Pty) Ltd. | A process for producing particulate products |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU747195B2 (en) * | 1997-03-26 | 2002-05-09 | Evergreen Energy Inc. | Liquid/gas/solid separation |
| AUPO589097A0 (en) * | 1997-03-26 | 1997-04-24 | Technological Resources Pty Limited | Liquid/gas/solid separation |
| US6601315B2 (en) | 2000-12-14 | 2003-08-05 | Bausch & Lomb Incorporated | Combined fluidized bed dryer and absorption bed |
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| US4492040A (en) * | 1980-11-20 | 1985-01-08 | A/S Niro Atomizer | Method and apparatus for drying a pulverulent or particulate product |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU4296978A (en) * | 1978-02-10 | 1979-08-16 | Monash University | Drying particulate materials |
| US4423558A (en) * | 1978-09-21 | 1984-01-03 | St. Gobain Vitrage | Device for heat exchange between solid particles and a gas current |
| LU86335A1 (en) * | 1986-03-04 | 1987-11-11 | Wurth Paul Sa | LOADING SYSTEM FOR A TANK OVEN |
| DK222686D0 (en) * | 1986-05-14 | 1986-05-14 | Rockwool Int | MINERAL WOOL PRODUCTION |
| DD282509A5 (en) * | 1989-04-18 | 1990-09-12 | Orgreb Inst Kraftwerke | METHOD AND DEVICE FOR DRYING SOLIDS MATERIALS IN AN INDIRECTLY HEATED SWITCH BED |
| US5243767A (en) * | 1992-07-30 | 1993-09-14 | Peter Stein | Method and apparatus for processing particulate material |
-
1992
- 1992-09-25 DE DE4232110A patent/DE4232110A1/en not_active Withdrawn
-
1993
- 1993-07-27 CA CA002101368A patent/CA2101368A1/en not_active Abandoned
- 1993-08-19 DE DE59304537T patent/DE59304537D1/en not_active Expired - Fee Related
- 1993-08-19 EP EP93202451A patent/EP0595378B1/en not_active Expired - Lifetime
- 1993-08-19 ES ES93202451T patent/ES2094467T3/en not_active Expired - Lifetime
- 1993-09-14 US US08/122,030 patent/US5325607A/en not_active Expired - Lifetime
- 1993-09-23 AU AU47546/93A patent/AU661197B2/en not_active Ceased
-
1996
- 1996-11-21 GR GR960402938T patent/GR3021754T3/en unknown
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE156981C (en) * | ||||
| US2412057A (en) * | 1944-03-06 | 1946-12-03 | Charles W Nichols Jr | Furnace construction |
| US2668041A (en) * | 1949-04-12 | 1954-02-02 | Knibbs Norman Victor Syndney | Heat treatment of finely divided solids |
| DE2217578A1 (en) * | 1971-04-16 | 1972-11-02 | Aktieselskabet Niro Atomizer, Soeborg (Dänemark) | Apparatus for drying moist powders and a method for operating such an apparatus |
| US4492040A (en) * | 1980-11-20 | 1985-01-08 | A/S Niro Atomizer | Method and apparatus for drying a pulverulent or particulate product |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001069150A1 (en) * | 2000-03-13 | 2001-09-20 | Energy Engineering International (Pty) Ltd. | A process for producing particulate products |
Also Published As
| Publication number | Publication date |
|---|---|
| AU4754693A (en) | 1994-03-31 |
| AU661197B2 (en) | 1995-07-13 |
| GR3021754T3 (en) | 1997-02-28 |
| DE59304537D1 (en) | 1997-01-02 |
| US5325607A (en) | 1994-07-05 |
| DE4232110A1 (en) | 1994-03-31 |
| EP0595378B1 (en) | 1996-11-20 |
| CA2101368A1 (en) | 1994-03-26 |
| ES2094467T3 (en) | 1997-01-16 |
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