DE1016397B - Pneumatic dust dispenser - Google Patents
Pneumatic dust dispenserInfo
- Publication number
- DE1016397B DE1016397B DEP12269A DEP0012269A DE1016397B DE 1016397 B DE1016397 B DE 1016397B DE P12269 A DEP12269 A DE P12269A DE P0012269 A DEP0012269 A DE P0012269A DE 1016397 B DE1016397 B DE 1016397B
- Authority
- DE
- Germany
- Prior art keywords
- dust
- air
- flowable
- labyrinth
- adjustable
- 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
- 239000000428 dust Substances 0.000 title claims description 23
- 230000009969 flowable effect Effects 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims 1
- 239000000446 fuel Substances 0.000 description 13
- 238000002485 combustion reaction Methods 0.000 description 4
- 239000000839 emulsion Substances 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 206010010904 Convulsion Diseases 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000011872 intimate mixture Substances 0.000 description 2
- 206010011878 Deafness Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K3/00—Feeding or distributing of lump or pulverulent fuel to combustion apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K2203/00—Feeding arrangements
- F23K2203/008—Feeding devices for pulverulent fuel
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Feeding And Controlling Fuel (AREA)
Description
Pneumatische Staubzuteilvorrichtung Bei Bre.nnstaub,feuerungen, bei denen der Brennstaub aus einem Vorratsbunker, Silo od. dgl. entnommen, wird, ergibt sich .immer die Schwierigkeit, eine gute und innige Mischung des. abgelagerten Brennstaubes mit der gleichzeitig als Verbrennungsluft dienenden Einblasluft zu erzielen. Es ist bekannt, den Brennstaub durch Einleiten von Luft durch eine unter dem Bunkerauslauf angeordnete poröse Platte fließbar zu machen und das fließbare Staub-Luft-Gemisch über eine seitlich oberhalb der porösen Platte anschließende Rohrleitung in die Förderleitung zu befördern. In dieser Rohrleitung befindet sich dabei ein Drehventil oder Drehschieber.Pneumatic dust dispensing device In the case of pulverulent dust, firings, in from which the fuel dust is taken from a storage bunker, silo or the like there is always the difficulty of a good and intimate mixture of the deposited fuel dust to achieve with the injection air, which is also used as combustion air. It is known to remove the fuel dust by introducing air through an under the bunker outlet arranged porous plate to make flowable and the flowable dust-air mixture via a pipeline connected laterally above the porous plate into the To convey delivery line. A rotary valve is located in this pipeline or rotary valve.
Der Nachteil dieser bekannten Ausführung besteht darin, daß das fließ fähiggemachte Staub Luft-Gemisch bei .geöffnetem Drehventil oder Drehschieber durch diesen. in unerwünschter Weise hin.durchschießt, se, daß eine- Ausflußkontrolle nicht in dem gewünschten Maße erfolgen kann. Ferner erfordern die drehbaren Ventilteile, eine, sorgfältige Abdichtung gegen. das Staub,-Luft-Gem.isch, da sie sonst ausschleifen,. Trotzdem besteht die Gefahr des Festsetzens oder Festfressens bei Eindringen von Staub zwischen die, Gleitflächen.The disadvantage of this known design is that the flow Enabled dust / air mixture when the rotary valve or rotary slide valve is open this. shoots through in an undesirable way, see that an outflow control cannot be done to the desired extent. Furthermore, the rotatable valve parts require a careful seal against. the dust and air mixture, otherwise they will grind out. Nevertheless, there is a risk of seizure or seizure when penetrating Dust between the, sliding surfaces.
Die Erfindung vermeidet diese Nachteile dadurch, daß der Einlauf in die seitlich anschließende Leitung als Labyrinth mit verstellbarem Durchlaßqu;e;rsch.nitt ausgebildet ist.The invention avoids these disadvantages in that the inlet in the laterally adjoining line as a labyrinth with adjustable passage cross-section is trained.
Bei einer bevorzugten Ausführungsform nach der Erfindung wird das, Labyrinth durch zwei parallele, lotrecht angeordnete Wände gebildet, von. denen die eine unten, die andere oben einen Durchlaßque.rschnitt frei läßt und; wobei die eine oder beide Wände in. der HÖhe verstellbar sind.In a preferred embodiment according to the invention, Labyrinth formed by two parallel, vertically arranged walls, by. those one at the bottom, the other at the top leaves a passage cross section free and; whereby one or both walls are adjustable in height.
Durch diese Ausbildung des Staubaustrittes wird das Durchschießen des durch Luft fließbar gemachten Staubes wirksam verhindert. Man hat es durch die Ausbildung des Labyrinths in der- Hand, jede gewünschte Bremswirkung zu erzielen. Da keine drehbaren Teile vorhanden, sind, fallen auch die damit verbundenen Nachteile, fort.Through this formation of the dust outlet, the shooting through of the dust made flowable by air is effectively prevented. You got it through the Formation of the labyrinth in hand to achieve any desired braking effect. Since there are no rotating parts, the associated disadvantages also fall. away.
Einzelheiten der Erfindung ergeben sich aus, der folgenden Beschreibung der schematisch im Schnitt in der Zeichnung dargestellten Einrichtung.Details of the invention emerge from the following description the device shown schematically in section in the drawing.
Unter denen Vorratsbunker 1, in dem sich der Brennstaub befindet, ist ein pneumatischer Zuteiler 2 angeordnet, der einen. porösen Boden 3 aufweist, unter welchem die Luftkammern 4, 5 liegen.. Diese Luftkammern 4, 5 sind über Regelventile 8, 9 mit. der Leitung 6, 7 verbunden., über die Druckluft in die Kammern 4, 5 eingeleitet wird. Mit Hilfe dieser Regelventile 8, 9 werden je nach der Füllhöhe und, Dichte des Brennstaubes, der sich im Vorratsbunker befindet, der Druck und die Menge der in die Kammern 4, 5 einzuführenden Luft eingestellt. Die Luft durchströmt den porösen Boden 3 und tritt dadurch sehr fein verteilt in; den darüber befindlichen Brennstaub ein, der durch die äußerst innige Mischung mit der Luft fließfähig wird und dadurch leicht aus dem Bunker 1 ausfließt. In schwierigen Fällen, bei denen es sich um sehr fest im Vorratsbunker 1 gelagerten. Brennstaub handelt, der sich dort schon längere Zeit befindet, wird vorteilhaft noch zusätzlich Auflockerungsluft über die porösen Einbauten 10 eingeführt, die in den Seitenwänden des Bunkers 1 und gegebenenfalls der Zute:ilvorrichtung 2 sitzen.Among those storage bunker 1, in which the fuel dust is located, a pneumatic distributor 2 is arranged, the one. has porous floor 3, under which the air chambers 4, 5 lie .. These air chambers 4, 5 are via control valves 8, 9 with. the line 6, 7 connected., introduced via the compressed air into the chambers 4, 5 will. With the help of these control valves 8, 9, depending on the level and density of the fuel dust that is in the storage bunker, the pressure and the amount of set in the chambers 4, 5 to be introduced air. The air flows through the porous Bottom 3 and is therefore very finely distributed in; the fuel dust above one that becomes flowable through the extremely intimate mixture with the air and thereby easily flows out of the bunker 1. In difficult cases that are very permanently stored in storage bunker 1. It is fuel dust that has been there for a long time Time is, it is advantageous additionally loosening air over the porous Internals 10 introduced into the side walls of the bunker 1 and optionally the point: ile device 2 sit.
Da der innig mit der Luft vermischte Brennstaub sich wie eine Flüssigkeit verhält, muß der Auslauf aus der Zuteilvorrichtung 2 überwacht und sorgfältig geregelt werden, damit die Brennstaubspeisung genau dem jeweiligen Brenmstaubbedarf der Feuerung angepaßt werden kann. Diese, Regelung und Überwachung des Auslaufes erfolgt teils durch sorgfältige Einstellung der Luftzufuhr, insbesondere zu der Kammer 5, die unterhalb der Auslaufzone. liegt, teils durch die Einstellung des Regelschiebers 11, mit dessen: Hilfe der Auslaufquerschnitt verändert werden kann und außerdem durch das Überlaufweihr 12, das ein Durchschießen. der Brennstaub-Luft-Emulsion unterbindet und das ebenfalls in der Höhe verstellbar sein kann.Because the fuel dust, which is intimately mixed with the air, becomes like a liquid behaves, the outlet from the metering device 2 must be monitored and carefully regulated so that the fuel dust feed exactly matches the respective fuel dust requirement of the furnace can be customized. This, regulation and monitoring of the outlet takes place in part by carefully adjusting the air supply, especially to the chamber 5, the below the run-out zone. is partly due to the setting of the control slide 11, with which: the outlet cross-section can be changed and also through the overflow dam 12, which is a shoot through. the fuel dust-air emulsion prevents and that can also be adjustable in height.
Unmittelbar unter dem Auslaufstutzen 13 befindet sich das Mischrohr 14, das strömungstechnisch so ausgebildet ist, daß an der Eintrittsstelle 15 ein Unterdruck herrscht, durch den der Eintritt der Breil:nstaub-Luft-Emuls,ion in das Mischrohr 14 begünstigt wird. Das Mischrohr 14 befindet sich in der Leitung 17, über die die Verbrennungsluft zu den. Brennern der Feuerung strömt. Die fließfähige!Bremn:s.taub-Luft-Emulsion vermischt sich beim Eintritt in das Mischrohr 14 innig mit der Einblasluft, und in dem Diffusor 16 wird ein Teil der Geschwindigkeitsenergie wieder in Druckenergie umgesetzt. Die äußerst innige Vermischung des Brennstaubes mit der Einblasluft begünstigt in; hohem Maße die Zündung und Verbrennung des Brennstaubes und ermöglicht eine vollkommene gleichförmige Verbrennung.The mixing tube is located directly under the outlet nozzle 13 14, which is fluidically designed so that at the entry point 15 a Negative pressure prevails, through which the entry of the dust-air emulsions into the Mixing tube 14 is favored. The mixing tube 14 is located in the line 17, via which the combustion air to the. Burning the furnace flows. The flowable! Bremn: s.taub-Luft-Emulsion mixes intimately with the injection air upon entry into the mixing tube 14, and by doing Diffuser 16 becomes part of the velocity energy again converted into pressure energy. The extremely intimate mixing of the fuel dust with the Injection air favors in; to a large extent the ignition and combustion of the fuel dust and enables perfectly uniform combustion.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP12269A DE1016397B (en) | 1954-07-05 | 1954-07-05 | Pneumatic dust dispenser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP12269A DE1016397B (en) | 1954-07-05 | 1954-07-05 | Pneumatic dust dispenser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1016397B true DE1016397B (en) | 1957-09-26 |
Family
ID=7363974
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEP12269A Pending DE1016397B (en) | 1954-07-05 | 1954-07-05 | Pneumatic dust dispenser |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE1016397B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3024071A (en) * | 1958-12-24 | 1962-03-06 | Fuller Co | Fluidizing conveying apparatus |
| US3056632A (en) * | 1958-11-07 | 1962-10-02 | Holderbank Cement | Pneumatic conveyor |
| DE1526188B1 (en) * | 1965-06-18 | 1971-08-26 | Peters Ag Claudius | METHOD OF DELIVERING CARBON DUST IN A FLUIDIZED CONDITION FROM A VENTILATED VENTILATION VENTILATION TO THE COMBUSTION PIPES OF A FIRE |
| US3995771A (en) * | 1975-05-19 | 1976-12-07 | Kaiser Aluminum & Chemical Corporation | Feeding device for particulate matter |
| FR2333733A1 (en) * | 1975-12-01 | 1977-07-01 | Gen Shale Prod | APPARATUS AND METHOD FOR DOSING AND DISTRIBUTING A POWDERED MATERIAL |
| EP0027909A1 (en) * | 1979-10-26 | 1981-05-06 | Krupp Polysius Ag | Installation for conveying fine-grained material |
| WO2012057909A3 (en) * | 2010-10-29 | 2013-10-10 | General Electric Company | Solids feeder discharge port |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE379430C (en) * | 1923-08-22 | John E Muhlfeld | Device for feeding dust-like fuel to furnaces | |
| DE464429C (en) * | 1927-09-02 | 1928-08-17 | Anton Schnepf | Grinding machine with a grinding wheel running around in a vertical plane in a bearing block and covered with sand or emery paper on the front |
| DE500389C (en) * | 1928-02-02 | 1930-06-20 | Fried Krupp Akt Ges | Device for the pneumatic conveying of dusty or powdery material, in particular coal dust |
| US1970405A (en) * | 1927-08-03 | 1934-08-14 | Oscar W Jeffery | Handling pulverized coal and the like |
| DE620572C (en) * | 1933-03-25 | 1936-01-23 | Johannes Ihlefeldt | Method and device for conveying powdery bulk goods using a gaseous pressure medium |
| GB527250A (en) * | 1938-06-07 | 1940-10-04 | Hannoversche Maschb Ag | An improved storage container for materials in the form of dust |
| DE734696C (en) * | 1941-08-01 | 1943-04-21 | Polysius Ag G | Device for loading the containers of compressed air conveyors with dust |
-
1954
- 1954-07-05 DE DEP12269A patent/DE1016397B/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE379430C (en) * | 1923-08-22 | John E Muhlfeld | Device for feeding dust-like fuel to furnaces | |
| US1970405A (en) * | 1927-08-03 | 1934-08-14 | Oscar W Jeffery | Handling pulverized coal and the like |
| DE464429C (en) * | 1927-09-02 | 1928-08-17 | Anton Schnepf | Grinding machine with a grinding wheel running around in a vertical plane in a bearing block and covered with sand or emery paper on the front |
| DE500389C (en) * | 1928-02-02 | 1930-06-20 | Fried Krupp Akt Ges | Device for the pneumatic conveying of dusty or powdery material, in particular coal dust |
| DE620572C (en) * | 1933-03-25 | 1936-01-23 | Johannes Ihlefeldt | Method and device for conveying powdery bulk goods using a gaseous pressure medium |
| GB527250A (en) * | 1938-06-07 | 1940-10-04 | Hannoversche Maschb Ag | An improved storage container for materials in the form of dust |
| DE734696C (en) * | 1941-08-01 | 1943-04-21 | Polysius Ag G | Device for loading the containers of compressed air conveyors with dust |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3056632A (en) * | 1958-11-07 | 1962-10-02 | Holderbank Cement | Pneumatic conveyor |
| US3024071A (en) * | 1958-12-24 | 1962-03-06 | Fuller Co | Fluidizing conveying apparatus |
| DE1526188B1 (en) * | 1965-06-18 | 1971-08-26 | Peters Ag Claudius | METHOD OF DELIVERING CARBON DUST IN A FLUIDIZED CONDITION FROM A VENTILATED VENTILATION VENTILATION TO THE COMBUSTION PIPES OF A FIRE |
| US3995771A (en) * | 1975-05-19 | 1976-12-07 | Kaiser Aluminum & Chemical Corporation | Feeding device for particulate matter |
| FR2333733A1 (en) * | 1975-12-01 | 1977-07-01 | Gen Shale Prod | APPARATUS AND METHOD FOR DOSING AND DISTRIBUTING A POWDERED MATERIAL |
| EP0027909A1 (en) * | 1979-10-26 | 1981-05-06 | Krupp Polysius Ag | Installation for conveying fine-grained material |
| WO2012057909A3 (en) * | 2010-10-29 | 2013-10-10 | General Electric Company | Solids feeder discharge port |
| CN103492808A (en) * | 2010-10-29 | 2014-01-01 | 通用电气公司 | Solids feeder discharge port |
| US8882400B2 (en) | 2010-10-29 | 2014-11-11 | General Electric Company | Solids feeder discharge port |
| CN103492808B (en) * | 2010-10-29 | 2016-01-27 | 通用电气公司 | Solid dispenser discharge port |
| AU2011320939B2 (en) * | 2010-10-29 | 2016-07-28 | Air Products And Chemicals, Inc. | Solids feeder discharge port |
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