DE1069576B - Fluidized bed process in which the solids are fluidized by a pulsating gas flow - Google Patents
Fluidized bed process in which the solids are fluidized by a pulsating gas flowInfo
- Publication number
- DE1069576B DE1069576B DENDAT1069576D DE1069576DA DE1069576B DE 1069576 B DE1069576 B DE 1069576B DE NDAT1069576 D DENDAT1069576 D DE NDAT1069576D DE 1069576D A DE1069576D A DE 1069576DA DE 1069576 B DE1069576 B DE 1069576B
- Authority
- DE
- Germany
- Prior art keywords
- fluidized
- gas flow
- fluidized bed
- side walls
- pulsating gas
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims description 9
- 239000007787 solid Substances 0.000 title claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 210000000056 organ Anatomy 0.000 claims description 2
- 238000005755 formation reaction Methods 0.000 description 3
- 238000005243 fluidization Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
Classifications
-
- 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
- B01J8/16—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with particles being 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
- B01J8/1872—Details of the fluidised bed reactor
-
- 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
- B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
- B01J2208/00796—Details of the reactor or of the particulate material
- B01J2208/00823—Mixing elements
- B01J2208/00831—Stationary elements
- B01J2208/0084—Stationary elements inside the bed, e.g. baffles
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
Description
Wirbelschichtverfahren, bei dem die Feststoffe durch einen pulsierenden Gasstrom fluidisiert werden Die Erfindung betrifft ein Wirbelschichtverfahren, bei dem die in einer Reaktionskammer auf einem gelochten Boden lagernden feinverteilten Feststoffe durch einen pulsierenden Gasstrom fluidisiert werden. Fluidized bed process, in which the solids through a pulsating Gas stream are fluidized The invention relates to a fluidized bed process in the finely divided stored in a reaction chamber on a perforated floor Solids are fluidized by a pulsating gas stream.
Durch die Verwendung eines pulsierenden Gasstromes relativ hoher Frequenz, die einen älteren Vorschlag entspricht, wird in dem Wirbelbett die Bildung von I,ufttaschen, Kaminen u. dgl. vermieden, so daß das Wirbelschichtbett der festen Körper regelmäßiger wird als bei einem Verfahren, das mit einem fortwährenden Gasstrom arbeitet. Due to the use of a pulsating gas flow, it is relatively higher Frequency that corresponds to an older proposal will be the formation in the fluidized bed Avoided air pockets, chimneys and the like, so that the fluidized bed of the solid The body becomes more regular than a procedure that involves a continuous flow of gas is working.
Es wurde nun festgestellt, daß sich bei dem Verfahren mit pulsierendem Gasstrom noch Kamine in der Nähe der Seitenwände bilden, und zwar insbesondere wenn das Wirbelbett nur eine geringe Höhe besitzt, beispielsweise die Höhe kleiner ist als die kleinste waagerechte Ausdehnung des Wirbelbetts. It has now been found that the method with pulsating Gas flow still form chimneys near the side walls, especially when the fluidized bed has only a small height, for example the height is smaller as the smallest horizontal dimension of the fluidized bed.
Die Erfindung hat sich die Aufgabe gestellt, diese Störungen zu beseitigen. The invention has set itself the task of eliminating these disturbances.
Sie löst die gestellte Aufgabe dadurch, daß längs der Seitenwände der Kammer zur Verhinderung einer Kaminbildung in der fluidisierten Schicht Verteilerorgane vorgesehen sind. Es können dabei an der Innenseite der Seitenwand waagerechte Borte von geringer Breite angeordnet sein. Eine andere Möglichkeit, die gewünschte Einwirkung zu erreichen, besteht darin, in den Seitenwänden Oeffnungen vorzusehen, durch die ein pulsierender Gasstrom eintritt. It solves the task set in that along the side walls the chamber to prevent chimney formation in the fluidized layer, distribution organs are provided. There can be horizontal braids on the inside of the side wall be arranged of narrow width. Another way to get the desired effect to achieve is to provide openings in the side walls through which a pulsating gas flow occurs.
Durch die gemäß der Erfindung in das Wirbelbett von den Seitenwänden hier hineingetragenen Störungen werden Kaminbildungen in der Nähe der Seitenwände vollständig verhindert und darüber hinaus die Gleichmäßigkeit des Wirbelbetts über dessen gesamte Ausdehnung erhöht. By according to the invention in the fluidized bed from the side walls Disturbances brought in here are chimney formations in the vicinity of the side walls completely prevented and moreover the uniformity of the fluidized bed about its overall extent increased.
Vorrichtungen, die zur Durchführung des Verfahrens gemäß der Erfindung dienen, sind in der Zeichnung beispielsweise veranschaulicht und im nachstehenden im einzelnen an Hand der Zeichnung be schrieben. Devices for carrying out the method according to the invention serve, are illustrated in the drawing, for example, and in the following be described in detail with reference to the drawing.
Fig. 1 zeigt im Schnitt eine Ausfiihrung einer derartigen Vorrichtung; Fig. 2 zeigt gleichfalls im Schnitt eine zweite Ausführungsform. 1 shows, in section, an embodiment of such a device; Fig. 2 also shows a second embodiment in section.
In der Ausführungsform nach Fig. 1 ist 10 ein bei 11 oben offener Kasten mit senkrechten Wänden 12 sowie einem waagerechten Boden 13, der bei 14 gelocht ist. Unter dem Kasten ist ein Lüftungskanal 15 angeschlossen, der mit der ganzen Fläche des Bodens 13 in Verbindung steht. Er wird mit Druckgas von pulsierendem Charakter gespeist. Der Kasten 10 ist mit den zu fluidisierenden Feststoffen 16 angefüllt, die durch Siebe od. dgl. am Durchtritt durch die Löcher 14 gehindert werden. In den Kasten ragen von den Wänden 12 her waagerechte Borte, die stockwerkartig übereinander über die ganze Höhe des Kastens an seinen Wänden befestigt sind. In the embodiment according to FIG. 1, 10 is an open top at 11 Box with vertical walls 12 and a horizontal bottom 13, which is perforated at 14 is. Under the box a ventilation duct 15 is connected to the whole Area of the bottom 13 is in communication. He is pulsing with pressurized gas Character fed. The box 10 is with the solids 16 to be fluidized Filled, which od by sieves. The like. prevented from passing through the holes 14 will. In the box protrude from the walls 12, horizontal braids that are storied on top of each other are attached to its walls over the full height of the box.
Infolge des pulsierenden Verlaufes des Gasstroms und infolge der Anordnung der Borte 17 begegnet der Gas strom einem sehr gleichförmigen Widerstand an den senkrechten Wänden 12 und in dem angrenzenden Teil des Wirbelbetts. Die Fluidisierung ist so über den ganzen waagerechten Querschnitt der Masse sehr gleichmäßig mit einer ausgezeichneten Gasausbeute. As a result of the pulsating course of the gas flow and as a result of Arrangement of the border 17, the gas flow encounters a very uniform resistance on the vertical walls 12 and in the adjacent part of the fluidized bed. The fluidization is so over the entire horizontal cross-section of the mass very evenly with a excellent gas yield.
In der Anordnung nach Fig. 2 ist der an seinem oberen Ende immer offene Kasten nicht nur am Boden 13 bei 19 gelocht, sondern auch bei 20 am größten Teil seiner senkrechten Wände 21. Diese können auch wieder Borte tragen wie in Fig. 1, müssen es aber nicht. In the arrangement according to FIG. 2, that is always at its upper end Open box not only perforated at the bottom 13 at 19, but also at the largest at 20 Part of its vertical walls 21.These can also have borders as in Fig. 1, but don't have to.
Der Lüftungskanal 18, der mit Druckgas von pulsierendem Charakter gespeist wird, ist an den Kasten angeschlossen und steht mit der ganzen gelochten Zone des Bodens 13 und der Seitenwände 21 in Verbindung. The ventilation duct 18, with compressed gas of a pulsating character is fed, is connected to the box and stands with the whole perforated Zone of the bottom 13 and the side walls 21 in connection.
Im Betrieb kommt der Gasstrom aus dem Kanal 18, tritt dann durch die Löcher 19 nach oben und durchquert das Wirbelbett 16. Infolge seines pulsierenden Charakters und der Anordnung der Löcher 20 wirkt dem Gasstrom, der die Tendenz haben würde, längs der Wände 21 zu entweichen, der Gas strom entgegen, der durch die Löcher 20 hindurchtritt. Die Fluidisierung ist auch hier über den ganzen waagerechten Querschnitt des Wirbelbetts 16 sehr gleichmäßig. In operation, the gas flow comes from the channel 18, then passes through the holes 19 up and crosses the fluidized bed 16. As a result of its pulsating Character and the arrangement of the holes 20 acts the gas flow, which have the tendency would escape along the walls 21, the gas flow counter to that through the holes 20 passes through. The fluidization is also here about the whole horizontal cross section of the fluidized bed 16 very evenly.
Claims (3)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL97837T |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1069576B true DE1069576B (en) | 1959-11-26 |
Family
ID=19760404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT1069576D Pending DE1069576B (en) | Fluidized bed process in which the solids are fluidized by a pulsating gas flow |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE1069576B (en) |
| NL (1) | NL97837C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3117195A1 (en) * | 1981-04-30 | 1982-11-11 | Bergwerksverband Gmbh, 4300 Essen | Method and appliance for reducing the heat exchange and mass transfer immediately adjacent to the walls of fluidised-bed reactors |
| EP0570218A1 (en) * | 1992-05-13 | 1993-11-18 | Matsui Manufacturing Co., Ltd. | Processes and apparatuses for granulating and drying particulate materials |
| EP2643268A4 (en) * | 2010-11-25 | 2015-10-21 | Ka Chun Tse | SYSTEM AND METHOD FOR PRODUCING HYDROGEN |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE726631C (en) * | 1938-11-18 | 1942-10-16 | Arno Andreas | Open heat exchanger |
| US2542587A (en) * | 1947-05-03 | 1951-02-20 | Sinclair Refining Co | Vibrating means for fluidized catalyst reactors |
| US2584296A (en) * | 1946-11-30 | 1952-02-05 | Standard Oil Dev Co | Process for countercurrent contacting of solids and gases |
| GB669311A (en) * | 1947-07-09 | 1952-04-02 | Otto Stelling | Improvements in carrying out chemical reactions |
| US2603591A (en) * | 1950-02-11 | 1952-07-15 | Socony Vacuum Oil Co Inc | Pulsating hydrocarbon conversion |
-
0
- DE DENDAT1069576D patent/DE1069576B/en active Pending
- NL NL97837D patent/NL97837C/xx active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE726631C (en) * | 1938-11-18 | 1942-10-16 | Arno Andreas | Open heat exchanger |
| US2584296A (en) * | 1946-11-30 | 1952-02-05 | Standard Oil Dev Co | Process for countercurrent contacting of solids and gases |
| US2542587A (en) * | 1947-05-03 | 1951-02-20 | Sinclair Refining Co | Vibrating means for fluidized catalyst reactors |
| GB669311A (en) * | 1947-07-09 | 1952-04-02 | Otto Stelling | Improvements in carrying out chemical reactions |
| US2603591A (en) * | 1950-02-11 | 1952-07-15 | Socony Vacuum Oil Co Inc | Pulsating hydrocarbon conversion |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3117195A1 (en) * | 1981-04-30 | 1982-11-11 | Bergwerksverband Gmbh, 4300 Essen | Method and appliance for reducing the heat exchange and mass transfer immediately adjacent to the walls of fluidised-bed reactors |
| EP0570218A1 (en) * | 1992-05-13 | 1993-11-18 | Matsui Manufacturing Co., Ltd. | Processes and apparatuses for granulating and drying particulate materials |
| EP2643268A4 (en) * | 2010-11-25 | 2015-10-21 | Ka Chun Tse | SYSTEM AND METHOD FOR PRODUCING HYDROGEN |
Also Published As
| Publication number | Publication date |
|---|---|
| NL97837C (en) |
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