DE1108844B - Double melting chamber for pulverized coal combustion - Google Patents
Double melting chamber for pulverized coal combustionInfo
- Publication number
- DE1108844B DE1108844B DEM26508A DEM0026508A DE1108844B DE 1108844 B DE1108844 B DE 1108844B DE M26508 A DEM26508 A DE M26508A DE M0026508 A DEM0026508 A DE M0026508A DE 1108844 B DE1108844 B DE 1108844B
- Authority
- DE
- Germany
- Prior art keywords
- chambers
- melting
- flue gas
- melting chamber
- pulverized coal
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C6/00—Combustion apparatus characterised by the combination of two or more combustion chambers or combustion zones, e.g. for staged combustion
- F23C6/02—Combustion apparatus characterised by the combination of two or more combustion chambers or combustion zones, e.g. for staged combustion in parallel arrangement
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Description
Doppelschmelzkammer für Kohlenstaubfeuerung Die Erfindung bezieht sich auf eine Doppelschmelzkammer für Kohlenstaubfeuerung mit einander gegenüberliegenden Schmelzkammern mit Deckenbrennern und U-förmiger Flamme sowie einem gemeinsamen, zwischen den beiden Schmelzkammern angeordneten Rauchgasabzug nach oben.Double melting chamber for pulverized coal firing The invention relates on a double melting chamber for pulverized coal combustion with opposite one another Melting chambers with ceiling burners and U-shaped flame as well as a common, Upward flue gas outlet arranged between the two melting chambers.
Derartige Doppelschmelzkammern ermöglichen einen Teillastbetrieb mit gutem Wirkungsgrad dadurch, daß bei einer Teillast unter 50 % eine der beiden Kammern außer Betrieb gesetzt werden kann. Da die Rauchgasströme an ihrer unteren Umlenkstelle gegeneinanderströmen, besteht die Gefahr, daß an dieser Stelle eine gegenseitige Beeinflussung der Rauchgasströme erfolgt und die Ausscheidung der Schlackenteilchen beeinträchtigt wird. Weiterhin besteht die Gefahr, daß bei Betrieb mit nur einer Schmelzkammer Schlackenteilchen in die außer Betrieb befindliche Schmelzkammer hinübergeschleudert werden.Such double melting chambers enable partial load operation good efficiency due to the fact that one of the two chambers at a partial load below 50% can be decommissioned. Because the flue gas flows at their lower deflection point flow against each other, there is a risk that at this point a mutual The flue gas flows are influenced and the slag particles are eliminated is affected. There is also the risk that when operated with only one Melting chamber Slag particles thrown over into the out of order melting chamber will.
Damit diese Nachteile nicht auftreten können, werden erfindungsgemäß die aus den Schmelzkammern in die Sekundärkammern abziehenden Rauchgasströme durch eine lotrechte Wand voneinander getrennt. Durch diese Trennwand wird jeder Rauchgasstrom für sich umgelenkt, ohne daß eine Beeinflussung durch den gegenüberliegenden Rauchgasstrom erfolgen kann. Es wird eine gute Schlackenausscheidung bewirkt, ohne daß die Gefahr besteht, daß bei Betrieb mit nur einer Schmelzkammer Schlackenteilchen in die nicht in Betrieb befindliche Schmelzkammer geschleudert werden.So that these disadvantages cannot occur, according to the invention the flue gas flows drawn off from the melting chambers into the secondary chambers separated by a vertical wall. Each flue gas flow is through this partition deflected by itself without being influenced by the opposite flue gas flow can be done. A good slag removal is effected without the danger is that when operating with only one melting chamber slag particles in the not the melting chamber in operation can be thrown out.
In der Zeichnung sind zwei Ausführungsbeispiele der Erfindung schematisch dargestellt. Es zeigt Fig. 1 eine Doppelschmelzkammer, bei der die beiden Schmelzkammern von der Sekundärkammer durch Mauerwerk getrennt sind; Fig. 2 eine Doppelschmelzkammer, bei der die Schmelzkammern von den Sekundärkammern durch einfache Rohrwände getrennt sind: Bei der Ausführung nach Fig. 1 sind die beiden Schmelzkammern 1 von den Wänden 2 und 3 begrenzt und durch je eine an der tiefsten Stelle liegende Rauchgasübertrittsöffnung 4 mit den Sekundärkammern 5 verbunden. Die Sekundärkammern 5 sind durch eine gemeinsame Rohrwand 6 voneinander getrennt und münden in einen gemeinsamen Rauchgasabzug 7. In den Schmelzkammern 1 wird durch einen Kohlenstaubbrenner 8 eine durch den Pfeil 9 angedeutete U-förmige Flamme entwickelt. Die Wände 2 sind stetig gekrümmt, so daß die Rauchgase ohne plötzliche Richtungsänderung aus den Schmelzkammern 1 in die Sekundärkammern 5 umgelenkt werden. Die Schmelzkammerwände 2 und 3 sind so angeordnet, daß sich der Querschnitt der Schmelzkammern nach den Öffnungen 4 hin stetig verringert, wodurch eine düsenartige Einschnürung des Rauchgasweges an diesen Stellen erreicht wird, was eine Zunahme der Rauchgasgeschwindigkeit zur Folge hat. In Verbindung mit der Krümmung der Wände 2 ergibt sich, daß die Ausschleuderung der flüssigen Schlackenteilchen nach den Öffnungen 4 hin zunimmt. Die Rohrwand 6 fängt die Schlackenteilchen auf, die beim Austritt der Rauchgase aus den Öffnungen 4 noch nicht gegen die Wände 2 ausgeschleudert sind und leitet sie in die gemeinsame Schlackenabflußöffnung 10 ab.Two exemplary embodiments of the invention are shown schematically in the drawing shown. 1 shows a double melting chamber in which the two melting chambers are separated from the secondary chamber by masonry; 2 shows a double melting chamber, in which the melting chambers are separated from the secondary chambers by simple pipe walls are: In the embodiment according to Fig. 1, the two melting chambers 1 are from the walls 2 and 3 and are each limited by a flue gas outlet opening at the lowest point 4 connected to the secondary chambers 5. The secondary chambers 5 are shared by one Pipe wall 6 separated from one another and open into a common flue gas vent 7. In the melting chambers 1, a coal dust burner 8 is indicated by the arrow 9 indicated U-shaped flame developed. The walls 2 are continuously curved, see above that the flue gases from the melting chambers 1 in the secondary chambers 5 are deflected. The melting chamber walls 2 and 3 are arranged so that that the cross-section of the melting chambers decreases steadily towards the openings 4, whereby a nozzle-like constriction of the flue gas path is achieved at these points which results in an increase in the flue gas velocity. In connection with the curvature of the walls 2 it follows that the ejection of the liquid Slag particles towards the openings 4 increases. The pipe wall 6 catches the slag particles on, which when the smoke gases exit from the openings 4 is not yet against the walls 2 are centrifuged and directs them into the common slag discharge opening 10 away.
Bei der Ausführung nach Fig.2 sind die beiden einander gegenüberliegenden Schmelzkammern 11 lediglich durch einfache Rohrwände 12 ohne Mauerwerk von den Sekundärkammern 13 getrennt. Der Flammen- bzw. Rauchgasübertritt findet an den Umlenkstellen 14 statt. Die die Sekundärkammern trennende Rohrwand 15 führt die Rauchgase nach dem gemeinsamen Rauchgasabzug 16.In the embodiment according to FIG. 2, the two opposing melting chambers 11 are separated from the secondary chambers 13 only by simple pipe walls 12 without masonry. The flame or smoke gas transfer takes place at the deflection points 14 . The pipe wall 15 separating the secondary chambers guides the flue gases to the common flue gas outlet 16.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEM26508A DE1108844B (en) | 1955-03-19 | 1955-03-19 | Double melting chamber for pulverized coal combustion |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEM26508A DE1108844B (en) | 1955-03-19 | 1955-03-19 | Double melting chamber for pulverized coal combustion |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1108844B true DE1108844B (en) | 1961-06-15 |
Family
ID=7299856
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEM26508A Pending DE1108844B (en) | 1955-03-19 | 1955-03-19 | Double melting chamber for pulverized coal combustion |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE1108844B (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3738290A (en) * | 1971-10-14 | 1973-06-12 | Us Interior | Dual pulse-jet system for the combustion of high ash fuel |
FR2518220A1 (en) * | 1981-12-11 | 1983-06-17 | Stein Industrie | METHOD AND DEVICE FOR COMBUSTING WET BITUMINOUS SCHISTES WITH LOW CALORIFIC POWER |
DE102005036305A1 (en) * | 2005-08-02 | 2007-02-22 | Steinmüller Engineering GmbH | Fossil powder-like fuel e.g. dry lignite, combustion method for e.g. steam generator, involves escaping additional heat via center wall, which is inserted as evaporator and extends vertical and perpendicular to burner`s front wall |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB166073A (en) * | 1919-02-24 | 1921-07-11 | John Erhard Muhlfeld | Improvements in or relating to the method of and apparatus for burning fuel in furnaces |
FR630559A (en) * | 1927-02-04 | 1927-12-05 | Steam boiler dust chamber | |
CH125916A (en) * | 1927-02-04 | 1928-05-16 | Ernst Dittmar | Dust coal firing on steam boilers. |
GB523870A (en) * | 1939-01-17 | 1940-07-24 | Babcock & Wilcox Ltd | Improvements in or relating to steam or other vapour generators comprising superheaters |
US2654350A (en) * | 1948-01-14 | 1953-10-06 | Blokolgas System Inc | Combustion chamber |
GB711645A (en) * | 1951-02-05 | 1954-07-07 | Walther & Cie Ag | Improvements in and relating to furnaces for pulverised fuel |
FR1073943A (en) * | 1951-09-26 | 1954-09-30 | Babcock & Wilcox France | Device for combustion of pulverized fuels with fusion of ash |
FR1086571A (en) * | 1952-08-29 | 1955-02-14 | Babcock & Wilcox France | Cyclone combustion device |
-
1955
- 1955-03-19 DE DEM26508A patent/DE1108844B/en active Pending
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB166073A (en) * | 1919-02-24 | 1921-07-11 | John Erhard Muhlfeld | Improvements in or relating to the method of and apparatus for burning fuel in furnaces |
FR630559A (en) * | 1927-02-04 | 1927-12-05 | Steam boiler dust chamber | |
CH125916A (en) * | 1927-02-04 | 1928-05-16 | Ernst Dittmar | Dust coal firing on steam boilers. |
GB523870A (en) * | 1939-01-17 | 1940-07-24 | Babcock & Wilcox Ltd | Improvements in or relating to steam or other vapour generators comprising superheaters |
US2654350A (en) * | 1948-01-14 | 1953-10-06 | Blokolgas System Inc | Combustion chamber |
GB711645A (en) * | 1951-02-05 | 1954-07-07 | Walther & Cie Ag | Improvements in and relating to furnaces for pulverised fuel |
FR1073943A (en) * | 1951-09-26 | 1954-09-30 | Babcock & Wilcox France | Device for combustion of pulverized fuels with fusion of ash |
FR1086571A (en) * | 1952-08-29 | 1955-02-14 | Babcock & Wilcox France | Cyclone combustion device |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3738290A (en) * | 1971-10-14 | 1973-06-12 | Us Interior | Dual pulse-jet system for the combustion of high ash fuel |
FR2518220A1 (en) * | 1981-12-11 | 1983-06-17 | Stein Industrie | METHOD AND DEVICE FOR COMBUSTING WET BITUMINOUS SCHISTES WITH LOW CALORIFIC POWER |
EP0081624A1 (en) * | 1981-12-11 | 1983-06-22 | STEIN INDUSTRIE Société Anonyme dite: | Method and apparatus for combustion of humid bituminous slates with low calorific power |
DE102005036305A1 (en) * | 2005-08-02 | 2007-02-22 | Steinmüller Engineering GmbH | Fossil powder-like fuel e.g. dry lignite, combustion method for e.g. steam generator, involves escaping additional heat via center wall, which is inserted as evaporator and extends vertical and perpendicular to burner`s front wall |
DE102005036305B4 (en) * | 2005-08-02 | 2007-09-20 | Steinmüller Engineering GmbH | Combustion plant (steam generator) and process for burning high calorific value fossil dusty fuels with low ash softening point in the furnace |
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