DE102010052464A1 - Rotary-power firing system comprises three or multiple air jets with higher air pulse, which are aligned on tangential circuit and are enclosed by housing for absorbing certain amount of hot combustion gases by air jet - Google Patents

Rotary-power firing system comprises three or multiple air jets with higher air pulse, which are aligned on tangential circuit and are enclosed by housing for absorbing certain amount of hot combustion gases by air jet Download PDF

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DE102010052464A1
DE102010052464A1 DE201010052464 DE102010052464A DE102010052464A1 DE 102010052464 A1 DE102010052464 A1 DE 102010052464A1 DE 201010052464 DE201010052464 DE 201010052464 DE 102010052464 A DE102010052464 A DE 102010052464A DE 102010052464 A1 DE102010052464 A1 DE 102010052464A1
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air
certain amount
rotary
combustion
secondary air
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DE201010052464
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Auf Nichtnennung Antrag
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    • 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 
    • F23C3/00—Combustion apparatus characterised by the shape of the combustion chamber
    • F23C3/006—Combustion apparatus characterised by the shape of the combustion chamber the chamber being arranged for cyclonic combustion
    • F23C3/008—Combustion apparatus characterised by the shape of the combustion chamber the chamber being arranged for cyclonic combustion for pulverulent fuel
    • 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 
    • F23C5/00—Disposition of burners with respect to the combustion chamber or to one another; Mounting of burners in combustion apparatus
    • F23C5/08—Disposition of burners
    • F23C5/32—Disposition of burners to obtain rotating flames, i.e. flames moving helically or spirally
    • 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 
    • F23C9/00—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber
    • F23C9/006—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber the recirculation taking place in the combustion chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J7/00—Arrangement of devices for supplying chemicals to fire
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L9/00—Passages or apertures for delivering secondary air for completing combustion of fuel 
    • F23L9/04—Passages or apertures for delivering secondary air for completing combustion of fuel  by discharging the air beyond the fire, i.e. nearer the smoke outlet
    • 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 
    • F23C2201/00—Staged combustion
    • F23C2201/10—Furnace staging
    • F23C2201/101—Furnace staging in vertical direction, e.g. alternating lean and rich zones

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)

Abstract

The rotary-power firing system comprises three or multiple air jets with higher air pulse, which are aligned on a tangential circuit and are enclosed by a housing for absorbing certain amount of hot combustion gases by the air jet. The secondary air absorbs the fuel, particularly the primary air with the coal dust and certain amount of combustion gases, such that besides the combustion reactions, the endothermic reactions extend the combustion process and the combustion temperature.

Description

Die Dreh-Strom-Feuerung wird durch drei oder mehr auf einen Tangentialkreis gerichtete Sekundärluftstrahle von über 80 m/s, Luftgeschwindigkeit und durch die umgebenden Feuerraumwände erzeugt. Neben den Sekundärluftdüsen befinden sich Primärluftdüsen, durch die Brennstoff, z. B. Kohlenstaub mit etwa 18 m/s, austritt und in den Sekundärluftstrahl eingesogen wird. Als Zündfeuer dient z. B. ein handelsüblicher Gasbrenner, der neben der Primär- und Sekundärluftdüse angeordnet ist.The rotary-current furnace is generated by three or more secondary air jets directed at a tangential circle of over 80 m / s, air velocity and by the surrounding furnace walls. In addition to the secondary air nozzles are primary air nozzles through the fuel, eg. B. coal dust at about 18 m / s, exits and is sucked into the secondary air jet. As a firing z. B. a commercial gas burner, which is arranged next to the primary and secondary air nozzle.

Ein zentrisch drehender Feuerball oder -zylinder wird durch mehrere Sekundärluftstrahlen erzeugt, wozu pro Ebene mindestens drei Strahlen und drei Umfassungswände erforderlich sind, siehe Bild 1, Seite 4.A centrically rotating fireball or cylinder is generated by several secondary air jets, which requires at least three jets and three perimeter walls per level, see Figure 1, page 4.

Die Anzahl der Sekundärluftstrahle kann mit der Anzahl der Umfassungswände zunehmen, z. B. bei sechs Umfassungswänden können sechs Strahlen den Feuerball erzeugen, siehe Bild 2, Seite 4.The number of secondary air jets may increase with the number of perimeter walls, e.g. For example, with six perimeter walls, six beams can create the fireball, see Figure 2, page 4.

Es lassen sich mehrere Ebenen mit verschiedenen Feuerzylinder-Durchmesser übereinander schichten und die Anzahl der Umfassungswände kann bis zu einem Zylinder als Umfassungswand anwachsen.It can be several layers with different Feuerzylinder diameter stacked one above the other and the number of Umfassungswände can grow up to a cylinder as Umfassungswand.

Der fossile Brennstoff, z. B. Kohlenstaub, kann neben den Sekundärluftdüsen mit herkömmlichen Primärluftgeschwindigkeiten von > 18 m/s zugegeben werden.The fossil fuel, z. As coal dust, can be added in addition to the secondary air nozzles with conventional primary air velocities of> 18 m / s.

Der Sekundärluftimpuls ist so bemessen, dass von ihm neben dem Brennstoff ein bestimmtes Maß an Brenngasen eingesogen, mit der Luft und dem Brennstoff stöchiometrisch gemischt und verbrannt wird. Auf das passende Maß an eingesogenen Brenngasen haben, neben dem Sekundärluftimpuls, auch die Umfassungswände und die benachbarten Sekundärluftstrahlen einen wesentlichen Einfluss.The secondary air pulse is dimensioned so that a certain amount of combustion gases are sucked in by it, mixed with the air and the fuel stoichiometrically and burned. In addition to the secondary air pulse, the surrounding walls and the adjacent secondary air jets have a significant influence on the appropriate level of absorbed fuel gases.

Enthalten die fossilen Brennstoffe Asche, z. B. beim Einsatz von Kohlenstaub, so kann die Entaschung über eine Drehströmung erfolgen, ähnlich dem Effekt der Anreicherung des ungelösten Zuckers am Boden einer Teetasse, wenn Tee und ungelöster Zucker mit einem Löffel in eine Drehströmung versetzt werden und sich der ungelöste Zucker auf der Mitte des Tassenbodens absetzt.Contain the fossil fuels ash, z. Example, when using coal dust, so the deashing can be done via a rotary flow, similar to the effect of enrichment of the undissolved sugar on the bottom of a teacup, when tea and undissolved sugar are mixed with a spoon in a rotary flow and the undissolved sugar in the middle of the cup bottom settles.

Die Drehstromverbrennung zeichnet sich durch den Einsatz eines breiten Brennstoffbandes und beliebigen Drücken aus, insbesondere auch für die Druckverbrennung und durch eine umweltfreundliche Verbrennung infolge der vermiedenen Temperaturspitzen durch die eingesogenen Brenngase.The three-phase combustion is characterized by the use of a wide fuel band and any pressures, especially for the pressure combustion and environmentally friendly combustion due to the avoided temperature peaks by the soaked fuel gases.

Claims (1)

Erfinderanspruch: Der Erfinderanspruch besteht in der Erzeugung einer Dreh-Strom-Feuerung durch drei oder mehr Luftstrahle mit hohem Luftimpuls, die auf einen Tangentialkreis ausgerichtet sind und so von einem Gehäuse umschlossen sind, dass nur ein gewisses Maß an heißen Brenngasen von dem Luftstrahl eingesaugt werden kann. Erfinderansprüche in fortlaufender Nummerierung: dadurch gekennzeichnet, dass die Sekundärluft den Brennstoff einsaugen, z. B. die Primärluft mit dem Kohlenstaub und ein gewisses Maß an Brenngasen, damit neben den Verbrennungsreaktionen auch endotherme Reaktionen (z. B. Boudouardreaktion, homogene Wassergasreaktion) den Verbrennungsablauf ausdehnen und die Verbrennungstemperatur sowie die Stickoixbildung verringern. 2. dadurch gekennzeichnet, dass drei oder mehr Sekundärluftdüsen auf einen Tangentialkreis gerichtet sind (siehe Bilder, Seite 4). 3. dadurch gekennzeichnet, dass die Luft durch die Sekundärluftdüsen mit über 80 m/s strömt und deshalb den Brennstoff und ein gewisses Maß an Brenngasen einsaugt und sich damit mischt und verbrennt. 4. dadurch gekennzeichnet, dass das Maß der eingesaugten Brenngase durch den hohen Sekundärluftimpuls und die Umfassungswände erzeugt wird. 5. dadurch gekennzeichnet, dass die Feuerraum-Fuß und -Kopfbegrenzung flach, trichterförmig, klöpperbodenartig oder halbkugelartig sein kann. 6. dadurch gekennzeichnet, dass sich die Flammen gegenseitig stabilisieren, indem sie, von den Feuerraumwänden entfernt, eine Drehströmung erzeugen. 7. dadurch gekennzeichnet, dass die Drehströmung die Asche konzentriert austrägt, ähnlich dem ungelösten Zucker beim Umrühren in der Teetasse. 8. dadurch gekennzeichnet, dass sich die Feuerung in variablem Abstand von den Feuerraumwänden stabilisiert und deshalb für beliebige Drücke geeignet ist. 9. dadurch gekennzeichnet, dass je nach Maß der endothermen Reaktionen der Feuerung auch Kalk zudosiert werden und damit eine Entschwefelung in der Feuerung erreicht werden kann.Inventor claim: The inventor claim is to produce a rotary-current firing by three or more high-impulse air jets, which are aligned on a tangential circle and are enclosed by a housing, that only a certain amount of hot fuel gases are sucked by the air jet can. Inventor claims in consecutive numbering: characterized in that the secondary air suck the fuel, for. As the primary air with the coal dust and a certain amount of fuel gases, so that in addition to the combustion reactions and endothermic reactions (eg Boudouard reaction, homogeneous water gas reaction) expand the combustion process and reduce the combustion temperature and the stickoix formation. 2. characterized in that three or more secondary air nozzles are directed to a tangential circle (see pictures, page 4). 3. characterized in that the air flows through the secondary air nozzles with over 80 m / s and therefore sucks the fuel and a certain amount of fuel gases and mixes with it and burns. 4. characterized in that the measure of the sucked fuel gases is generated by the high secondary air pulse and the surrounding walls. 5. characterized in that the firebox foot and head restraint can be flat, funnel-shaped, dished bottomed or hemispherical. 6. characterized in that the flames stabilize each other by, away from the combustion chamber walls, produce a rotary flow. 7. characterized in that the rotary flow discharges the ash concentrated, similar to the undissolved sugar when stirred in the teacup. 8. characterized in that the furnace stabilizes at a variable distance from the furnace walls and therefore suitable for any pressures. 9. characterized in that depending on the degree of endothermic reactions of the furnace and lime are added and thus desulfurization can be achieved in the furnace.
DE201010052464 2010-11-24 2010-11-24 Rotary-power firing system comprises three or multiple air jets with higher air pulse, which are aligned on tangential circuit and are enclosed by housing for absorbing certain amount of hot combustion gases by air jet Ceased DE102010052464A1 (en)

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0022454B1 (en) * 1979-07-12 1983-11-16 Combustion Engineering, Inc. Furnace with sets of nozzles for tangential introduction of pulverized coal, air and recirculated gases
EP0207478B1 (en) * 1985-06-28 1988-11-02 Gewerkschaft Sophia-Jacoba Steinkohlenbergwerk Device for combusting, particularly of slowly reactive coal dust
DD276907A1 (en) * 1985-03-28 1990-03-14 Leuna Werke Veb DRY BURNER FOR GASOFUL, LIQUID AND SOLID DUST-SOIL FUELS
DD289324A5 (en) * 1989-11-29 1991-04-25 Orgreb-Institut F. Kraftwerke,De CARBURIZING BURNERS, PARTICULARLY CARBONIZED SPIRITS
DE69608059T2 (en) * 1995-10-03 2000-12-14 Mitsubishi Jukogyo K.K., Tokio/Tokyo Burner and method of supplying fuel and gasifier
DE69519931T2 (en) * 1994-08-26 2001-07-19 Minergy Corp., Milwaukee CONVERSION OF WASTE SLUDGE IN THE PAPER INDUSTRY
DE10301316B3 (en) * 2003-01-15 2004-08-05 Alstom Power Boiler Gmbh Fuel dust combustion method for preventing nitrous emissions e.g. for steam generator, with tangential injection of fuel rich stream and fuel impoverished stream into combustion chamber
EP1219893B1 (en) * 1998-07-29 2006-01-18 Mitsubishi Heavy Industries, Ltd. Pulverized coal burner
AT10808U1 (en) * 2008-11-10 2009-10-15 Egon Ing Russ METHOD AND DEVICE FOR BURNING SOLID FUELS

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0022454B1 (en) * 1979-07-12 1983-11-16 Combustion Engineering, Inc. Furnace with sets of nozzles for tangential introduction of pulverized coal, air and recirculated gases
DD276907A1 (en) * 1985-03-28 1990-03-14 Leuna Werke Veb DRY BURNER FOR GASOFUL, LIQUID AND SOLID DUST-SOIL FUELS
EP0207478B1 (en) * 1985-06-28 1988-11-02 Gewerkschaft Sophia-Jacoba Steinkohlenbergwerk Device for combusting, particularly of slowly reactive coal dust
DD289324A5 (en) * 1989-11-29 1991-04-25 Orgreb-Institut F. Kraftwerke,De CARBURIZING BURNERS, PARTICULARLY CARBONIZED SPIRITS
DE69519931T2 (en) * 1994-08-26 2001-07-19 Minergy Corp., Milwaukee CONVERSION OF WASTE SLUDGE IN THE PAPER INDUSTRY
DE69608059T2 (en) * 1995-10-03 2000-12-14 Mitsubishi Jukogyo K.K., Tokio/Tokyo Burner and method of supplying fuel and gasifier
EP1219893B1 (en) * 1998-07-29 2006-01-18 Mitsubishi Heavy Industries, Ltd. Pulverized coal burner
DE10301316B3 (en) * 2003-01-15 2004-08-05 Alstom Power Boiler Gmbh Fuel dust combustion method for preventing nitrous emissions e.g. for steam generator, with tangential injection of fuel rich stream and fuel impoverished stream into combustion chamber
AT10808U1 (en) * 2008-11-10 2009-10-15 Egon Ing Russ METHOD AND DEVICE FOR BURNING SOLID FUELS

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