DE1108844B - Double melting chamber for pulverized coal combustion - Google Patents

Double melting chamber for pulverized coal combustion

Info

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
Application number
DEM26508A
Other languages
German (de)
Inventor
Dr-Ing Hans Maas
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MAN AG
Original Assignee
MAN Maschinenfabrik Augsburg Nuernberg AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by MAN Maschinenfabrik Augsburg Nuernberg AG filed Critical MAN Maschinenfabrik Augsburg Nuernberg AG
Priority to DEM26508A priority Critical patent/DE1108844B/en
Publication of DE1108844B publication Critical patent/DE1108844B/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23CMETHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C6/00Combustion apparatus characterised by the combination of two or more combustion chambers or combustion zones, e.g. for staged combustion
    • F23C6/02Combustion apparatus characterised by the combination of two or more combustion chambers or combustion zones, e.g. for staged combustion in parallel arrangement

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  • 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)

PATENTANSPRUCH: Doppelschmelzkammer für Kohlenstaubfeuerung mit einander gegenüberliegenden Schmelzkammern mit Deckenbrennern und U-förmiger Flamme sowie einem gemeinsamen, zwischen den beiden Schmelzkammern angeordneten Rauchgasabzug nach oben, dadurch gekennzeichnet, daß die aus den Schmelzkammern (1, 11) in die Sekundärkammern (5, 13) abziehenden Rauchgasströme durch eine lotrechte Wand (6,15) voneinander getrennt sind. In Betracht gezogene Druckschriften: Deutsche Patentanmeldung St 3896 Ia/241 (bekanntgemacht am 18. 12. 1952); schweizerische Patentschrift Nr. 125 916; französische Patentschriften Nr. 630 559, 1073 943, 1086 571; britische Patentschriften Nr. 166 073, 523 870, 711645; USA.-Patentschrift Nr. 2 654 350.PATENT CLAIM: Double melting chamber for pulverized coal firing with opposing melting chambers with ceiling burners and U-shaped flame as well as a common upward flue gas outlet arranged between the two melting chambers, characterized in that the from the melting chambers (1, 11) into the secondary chambers (5, 13) withdrawing flue gas flows are separated from one another by a vertical wall (6,15). Considered publications: German patent application St 3896 Ia / 241 (published on December 18, 1952); Swiss Patent No. 125 916; French Patent Nos. 630 559, 1073 943, 1086 571; British Patent Nos. 166 073, 523 870, 711645; U.S. Patent No. 2,654,350.
DEM26508A 1955-03-19 1955-03-19 Double melting chamber for pulverized coal combustion Pending DE1108844B (en)

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

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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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (8)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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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