EP2496879B1 - Burner nozzle - Google Patents

Burner nozzle Download PDF

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Publication number
EP2496879B1
EP2496879B1 EP10781800.7A EP10781800A EP2496879B1 EP 2496879 B1 EP2496879 B1 EP 2496879B1 EP 10781800 A EP10781800 A EP 10781800A EP 2496879 B1 EP2496879 B1 EP 2496879B1
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EP
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Prior art keywords
burner nozzle
outlet opening
hartmann
generator
nozzle
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EP10781800.7A
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German (de)
French (fr)
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EP2496879A1 (en
Inventor
Heinz Haberfelner
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CTP-DUMAG GmbH
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CTP-DUMAG GmbH
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
    • F23D11/34—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space by ultrasonic means or other kinds of vibrations

Definitions

  • the invention relates to a burner nozzle with a capped housing, with a first central combustible fluid channel, with a central combustible fluid outlet, with a second annularly disposed channel around the first central channel for a nebulizing medium around the first, central outlet opening arranged outlet opening for the Zerstäubermedium and with a arranged in the region of the annular outlet opening Hartmann's generator, wherein the annular outlet opening is formed by the distance between the inner diameter of the cap and the outer diameter of the plate of the Hartmann'schen generator and wherein the outer diameter of the plate of the Hartmann'schen generator is dimensioned so that when using pure oxygen as Zerstäubermedium the exit velocity of the atomizing medium from the burner nozzle is so large that the maximum operating temperature of We of the burner nozzle and / or the Hartmann generator in the region of the housing of the burner nozzle is not exceeded.
  • the invention relates to a combustion device with a lance and a burner nozzle and the use of a burner nozzle.
  • Burner nozzles are known with a Hartmann's generator, by means of which combustible fluids, such as oil or liquid sulfur, sprayed with a Zerstäubermedium and burned.
  • the atomizing medium used was usually compressed air or steam.
  • a disadvantage of the use of compressed air or steam is that only a certain flame temperature can be achieved. To overcome this disadvantage can be used as atomizer pure oxygen, with which much higher flame temperatures can be achieved.
  • AT 339 456 B discloses a burner nozzle according to the preamble of claim 1.
  • the invention is based on the object to provide a burner nozzle, with which the problems addressed are avoided. This object is achieved according to the invention with a burner nozzle, which has the features of claim 1.
  • Preferred and advantageous embodiments of the burner nozzle according to the invention are the subject of the dependent claims. According to the invention, the quotient of the outer diameter of the plate of the Hartmann generator and the inner diameter of the cap of the housing of the burner nozzle is between 0.75 and 0.80.
  • the problem mentioned at the outset that the nozzle is damaged in a pure oxygen combustion by exceeding the maximum operating temperature in the region of the nozzle occurs.
  • the effect occurs that the nozzle can withstand the temperatures occurring in pure oxygen combustion even in the longer term.
  • the maximum operating temperature of the material of the nozzle and / or the Hartmann'schen generator is not exceeded at the front end side of the housing of the nozzle, since the temperatures occurring at the nozzle are greatest here ,
  • the annular channel of the nozzle for the pure oxygen is with an oxygen tank, ie a storage tank for pure oxygen in combination.
  • the maximum operating temperature may, for example, be in the range of 600 ° C. or 1,500 ° C. If the nozzle and the plate of the Hartmann generator are formed from different materials, the diameter of the plate is dimensioned within the scope of the invention in such a way that the temperature which corresponds to the lowest maximum operating temperature of the materials used is not exceeded.
  • the outside diameter of the Hartmann's pure oxygen generator diameter relative to the outer diameter of a Hartmann generator for compressed air, steam, and the like is reduced, while the lance of a combustor is the same, such that the exit velocity of the atomizer medium is the nozzle is increased.
  • reduced diameter plate diameter for pure oxygen occurs at the same outlet opening for the Zerstäubermedium the effect that the mixing and combustion of Zerstäubermedium, here pure oxygen, and combustible fluid with such a distance from the burner nozzle takes place that the burner nozzle has taken no more damage due to the high flame temperature.
  • the procedure is such that a nozzle with a Hartmann generator is arranged on a lance, whose diameter is dimensioned such that the nozzle Exit velocity of pure oxygen from the nozzle - with the same lance as for a nozzle for atomizing steam, compressed air, and the like - is so great that the maximum operating temperature of the material of the nozzle and / or the Hartmann'schen generator on the front end of the housing of the nozzle is not exceeded.
  • a Hartmann'scher generator is used, through whose plate diameter, the exit velocity of pure oxygen over the exit velocity at a Hartmann'schen generator for steam, compressed air, or the like, substantially doubled.
  • Fig. 1 a lance with a conventional burner nozzle in a sectional view
  • Fig. 2 a lance with an embodiment of a burner nozzle according to the invention in a sectional view
  • Fig. 3 the burner nozzle off Fig. 1 in a sectional view
  • Fig. 4 the burner nozzle off Fig. 2 in a sectional view
  • Fig. 5 a detail from Fig. 4 on an enlarged scale.
  • the lance 1 has a base body 4, within which a first channel 6 for combustible fluid running along the longitudinal axis 5 of the firing device and a second channel 7 for atomizing medium is arranged.
  • the first channel 6 is arranged centrally, whereas the second channel 7 is provided as a running around the central channel 6 annular channel.
  • a supply line 8 for the combustible fluid which opens into the central channel 6.
  • a supply line 9 is provided for the atomizer, which opens into the Rinkanal 7 and is arranged substantially perpendicular to the longitudinal axis 5. Via the central channel 6 and the annular channel 7, the combustible fluid and the atomizer medium reach the burner nozzle 2, 3.
  • Fig. 1 is arranged on the lance 1, a conventional burner nozzle 2, wherein the atomizing medium compressed air or steam or the like is used.
  • the used O-ring seal O ' there is the problem that compressed air or steam can penetrate into the central channel 6 for the combustible fluid.
  • the penetration of atomizer medium is harmless in a compressed air or steam atomization.
  • a burner nozzle 3 according to the invention is arranged on the lance 1, pure oxygen being used as the atomizing medium. With oxygen, it is dangerous if it penetrates into the central channel 6 for the combustible fluid, which is why the O-ring seal O seals at the lance 1 with the burner nozzle 3 according to the invention against the outside atmosphere.
  • oil and liquid sulfur can be used in both cases.
  • the burner nozzle 2, 3 has a base body 10, which is arranged in the interior of a cylindrical housing 11 and in the region of the front end face 12 of the housing 11 has an annular groove serving as a resonance chamber 13 of a Hartmann generator.
  • a first, central channel 14 as a continuation of the central channel 6 for the combustible fluid, which opens into an outlet opening 14 '.
  • the supply opening 14 ' may be associated with a distributor for the combustible fluid.
  • a second, annular channel 15 is formed as a continuation of the annular channel 7 for the atomizer medium, which ends in a nozzle chamber 16 directed against the longitudinal axis 5.
  • the nozzle chamber 16 opens into the resonance chamber 13 of the Hartmann generator, so that the atomizer medium penetrates into the resonance chamber 13 and is set in oscillation.
  • the Zerstäubermedium then exits through an annular opening 17 whose width - seen in plan view of the burner nozzle 2, 3 - from the distance between the inner diameter D1, D1 'of the cap 18 of the cylindrical housing 11 and the outer diameter D2, D2' of the plate 19 of the Hartmann generator is formed.
  • the Hartmann generator By the Hartmann generator a vibration field is established, through which the emerging from the central channel 14 combustible fluid is atomized very fine.
  • the atomized, combustible fluid is intimately mixed and burned with the atomizer medium operating the Hartmann generator.
  • the outer diameter D2 'of the plate 19 of the Hartmann generator is greater than 15 mm. Steam or compressed air and oil mix immediately after the annular opening 17 and burn there. If pure oxygen were used as atomizing medium in this burner nozzle 2, the higher flame temperature would damage the burner nozzle 2.
  • the inner diameter D1 'of the cap 18 of the cylindrical housing 11 is 18 mm, so that the quotient of the outer diameter D2' of the plate 19 of the Hartmann generator and the inner diameter D1 'of the cap 18 of the housing 11 of the burner nozzle 3 is 0.83 ,
  • the outer diameter D2 of the plate 19 of the Hartmann generator can be less than 15 in the context of the invention mm, preferably less than 12 mm, in particular about 11 mm.
  • the exit velocity of the oxygen is doubled compared with nozzles with a diameter of 15 mm or more, with the same size of the atomizing medium outlet 17.
  • Fig. 4 is the outer diameter D2 of the plate 19 of the Hartmann generator 11mm. The pure oxygen and the oil mix and burn only at a distance from the burner nozzle 3, since due to the opposite to the plate diameter D2 'according to Fig. 3 smaller diameter plate D2 increases the exit velocity of pure oxygen.
  • the inner diameter D1 of the cap 18 of the cylindrical housing 11 is 14 mm, so that the quotient of the outer diameter D2 of the plate 19 of the Hartmann's generator and the inner diameter D1 of the cap 18 of the housing 11 of the burner nozzle 3 is 0.79.
  • the quotient of the outer diameter D2 of the plate 19 of the Hartmann generator and the inner diameter D1 of the cap 18 of the housing 3 of the burner nozzle 11 is less than 0.80 in the context of the invention.
  • the ratio D2 / D1 is between 0.80 and 0.75, since these embodiments offer a particularly advantageous flow pattern of the oxygen for the combustion of the fluid.
  • the exit velocity of the pure oxygen per se is determined by the diameter of the plate of the Hartmann generator, it has surprisingly been found that the ratio of D 2 / D 1 depends essentially on the function of the oxygen nozzle, and that the nozzle 3 is above all in the range of the ratio D2 / D1 of 0.75 to 0.8 permanently works properly.
  • the inventive nozzle 3 for pure oxygen according to the said ratio D2 / D1 works when using compressed air and steam or the like. not, because then the resulting flame would tear off due to the excessive exit velocity.
  • the distance between the inner diameter D1, D1 'of the cap 18 of the housing 11 and the outer diameter D2, D2' of the plate 19 of the Hartmann generator is at the burner nozzles 2, 3 according to the 3 and 4 equal.
  • Fig. 5 shows the area of the annular opening 17 for the pure oxygen in an enlarged scale.
  • the width of the outlet opening 17 for the oxygen corresponds to the distance between the lower outer edge (20) of the plate (19) of the Hartmann's generator and the upper inner edge (21) of the cap (18) of the housing (11).
  • the lateral surface intended between the outer edge (20) and the inner edge (21) is approximately 315 mm 2 at a height h of 4 mm.
  • the lateral surface formed between the lower outer edge of the plate of the Hartmann generator and the upper inner edge of the cap of the housing is less than 415 mm 2 , preferably less than 350 mm 2 , in particular less than 315 mm 2 , is.
  • a particularly advantageous flow pattern of oxygen offers.
  • a burner nozzle 3 has a first, central combustible fluid channel 14, a first combustible fluid central outlet orifice 14 ', a second annular channel 15 for atomizing medium disposed annularly about the first, central channel 14, and a ring around the first, central one Outlet opening 14 'arranged outlet opening 17 for the Zerstäubermedium, in the region of a Hartmann'scher generator is arranged on.
  • the atomizing medium is pure oxygen used.
  • the outer diameter D2 of the plate 19 of the Hartmann generator is dimensioned such that the exit velocity of the pure oxygen from the nozzle 3 is so great that the maximum operating temperature of the material of the nozzle and / or the Hartmann generator in the region of the housing 11 the nozzle 3 is not exceeded.
  • the quotient of outer diameter D2 of the plate 19 of the Hartmann generator and inner diameter D1 of the cap 18 of the housing 11 of the nozzle 3 is between 0.75 and 0.80. The effect occurs that the mixing and combustion of oxygen and combustible fluid takes place at such a distance from the burner nozzle 3 that the burner nozzle 3 is not damaged by the high flame temperature.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Nozzles For Spraying Of Liquid Fuel (AREA)
  • Air Supply (AREA)
  • Pre-Mixing And Non-Premixing Gas Burner (AREA)

Description

Die Erfindung betrifft eine Brennerdüse mit einem eine Kappe aufweisenden Gehäuse, mit einem ersten zentralen Kanal für brennbares Fluid, mit einer zentralen Austrittsöffnung für das brennbare Fluid, mit einem zweiten, ringförmig um den ersten, zentralen Kanal angeordneten Kanal für ein Zerstäubermedium, mit einer ringförmig um die erste, zentrale Austrittsöffnung angeordneten Austrittsöffnung für das Zerstäubermedium und mit einem im Bereich der ringförmigen Austrittsöffnung angeordneten Hartmann'-schen Generator, wobei die ringförmige Austrittsöffnung durch den Abstand zwischen dem Innendurchmesser der Kappe und dem Außendurchmesser des Tellers des Hartmann'schen Generators gebildet ist und wobei der Außendurchmesser des Tellers des Hartmann'schen Generators so bemessen ist, dass bei Verwendung von reinem Sauerstoff als Zerstäubermedium die Austrittsgeschwindigkeit des Zerstäubermediums aus der Brennerdüse so groß ist, dass die maximale Einsatztemperatur des Werkstoffs der Brennerdüse und/oder des Hartmann'schen Generators im Bereich des Gehäuses der Brennerdüse nicht überschritten wird.
Des Weiteren betrifft die Erfindung eine Brennvorrichtung mit einer Lanze und einer Brennerdüse sowie die Verwendung einer Brennerdüse.
Aus dem Stand der Technik, beispielsweise aus der AT 339 456 B oder der DE 25 54 483 A1 , sind Brennerdüsen mit einem Hartmann'schen Generator bekannt, mittels denen brennbare Fluide, beispielsweise Öl oder flüssiger Schwefel, mit einem Zerstäubermedium verdüst und verbrannt werden. Als Zerstäubermedium wurde meistens Pressluft oder Dampf verwendet. Nachteilig beim Einsatz von Pressluft oder Dampf ist, dass nur eine gewisse Flammentemperatur erreicht werden kann. Um diesen Nachteil zu überwinden kann als Zerstäubermedium reiner Sauerstoff, mit dem wesentlich höhere Flammentemperaturen zu erreichen sind, verwendet werden. Da bei Verwendung von reinem Sauerstoff zudem die Zündgeschwindigkeit gesteigert wird, hat es sich in der Praxis herausgestellt, dass die Flamme so nah an die Brennerdüse kommt, dass diese beschädigt wird, selbst wenn sie aus feuerfestem Material hergestellt ist. AT 339 456 B offenbart eine Brennerdüse gemäß dem Oberbegriff von Anspruch 1. Der Erfindung liegt die Aufgabe zu Grunde, eine Brennerdüse zur Verfügung zu stellen, mit welcher die angesprochenen Probleme vermieden werden.
Gelöst wird diese Aufgabe erfindungsgemäß mit einer Brennerdüse, welche die Merkmale des Anspruches 1 aufweist.
Bevorzugte und vorteilhafte Ausführungsformen der erfindungsgemäßen Brennerdüse sind Gegenstand der Unteransprüche.
Erfindungsgemäß ist vorgesehen, dass der Quotient aus Außendurchmesser des Tellers des Hartmann'schen Generators und Innendurchmesser der Kappe des Gehäuses der Brennerdüse zwischen 0,75 und 0,80 liegt. Bei Tellerdurchmessern für das Zerstäuben von Pressluft, Dampf, und dergleichen, tritt das eingangs genannte Problem auf, dass die Düse bei einer reinen Sauerstoffverbrennung durch Überschreiten der maximalen Einsatztemperatur im Bereich der Düse beschädigt wird. Bei der erfindungsgemäße Brennerdüse tritt der Effekt auf, dass die Düse auch längerfristig den bei der reinen Sauserstoffverbrennung auftretenden Temperaturen standhält.
In einer besonders bevorzugten Ausführungsform der erfindungsgemäßen Brennerdüse ist vorgesehen, dass die maximale Einsatztemperatur des Werkstoffs der Düse und/oder des Hartmann'schen Generators an der vorderen Stirnseite des Gehäuses der Düse nicht überschritten wird, da hier die an der Düse auftretenden Temperaturen am größten sind.
Der ringförmige Kanal der Düse für den reinen Sauerstoff steht mit einem Sauerstoff-behälter, d.h. einem Lagerbehälter für reinen Sauerstoff, in Verbindung.The invention relates to a burner nozzle with a capped housing, with a first central combustible fluid channel, with a central combustible fluid outlet, with a second annularly disposed channel around the first central channel for a nebulizing medium around the first, central outlet opening arranged outlet opening for the Zerstäubermedium and with a arranged in the region of the annular outlet opening Hartmann's generator, wherein the annular outlet opening is formed by the distance between the inner diameter of the cap and the outer diameter of the plate of the Hartmann'schen generator and wherein the outer diameter of the plate of the Hartmann'schen generator is dimensioned so that when using pure oxygen as Zerstäubermedium the exit velocity of the atomizing medium from the burner nozzle is so large that the maximum operating temperature of We of the burner nozzle and / or the Hartmann generator in the region of the housing of the burner nozzle is not exceeded.
Furthermore, the invention relates to a combustion device with a lance and a burner nozzle and the use of a burner nozzle.
From the prior art, for example from the AT 339 456 B or the DE 25 54 483 A1 , Burner nozzles are known with a Hartmann's generator, by means of which combustible fluids, such as oil or liquid sulfur, sprayed with a Zerstäubermedium and burned. The atomizing medium used was usually compressed air or steam. A disadvantage of the use of compressed air or steam is that only a certain flame temperature can be achieved. To overcome this disadvantage can be used as atomizer pure oxygen, with which much higher flame temperatures can be achieved. Because when using pure Oxygen, moreover, the ignition speed is increased, it has been found in practice that the flame comes so close to the burner nozzle, that it is damaged even if it is made of refractory material. AT 339 456 B discloses a burner nozzle according to the preamble of claim 1. The invention is based on the object to provide a burner nozzle, with which the problems addressed are avoided.
This object is achieved according to the invention with a burner nozzle, which has the features of claim 1.
Preferred and advantageous embodiments of the burner nozzle according to the invention are the subject of the dependent claims.
According to the invention, the quotient of the outer diameter of the plate of the Hartmann generator and the inner diameter of the cap of the housing of the burner nozzle is between 0.75 and 0.80. For plate diameters for the atomization of compressed air, steam, and the like, the problem mentioned at the outset that the nozzle is damaged in a pure oxygen combustion by exceeding the maximum operating temperature in the region of the nozzle occurs. In the case of the burner nozzle according to the invention, the effect occurs that the nozzle can withstand the temperatures occurring in pure oxygen combustion even in the longer term.
In a particularly preferred embodiment of the burner nozzle according to the invention it is provided that the maximum operating temperature of the material of the nozzle and / or the Hartmann'schen generator is not exceeded at the front end side of the housing of the nozzle, since the temperatures occurring at the nozzle are greatest here ,
The annular channel of the nozzle for the pure oxygen is with an oxygen tank, ie a storage tank for pure oxygen in combination.

Die maximale Einsatztemperatur kann abhängig vom verwendeten Material beispielsweise im Bereich von 600°C oder von 1.500°C liegen. Sind die Düse und der Teller des Hartmann'schen Generators aus verschiedenen Materialien gebildet, so wird der Tellerdurchmesser im Rahmen der Erfindung derart bemessen, dass diejenige Temperatur nicht überschritten wird, welche der geringsten maximalen Einsatztemperatur der verwendeten Materialien entspricht.Depending on the material used, the maximum operating temperature may, for example, be in the range of 600 ° C. or 1,500 ° C. If the nozzle and the plate of the Hartmann generator are formed from different materials, the diameter of the plate is dimensioned within the scope of the invention in such a way that the temperature which corresponds to the lowest maximum operating temperature of the materials used is not exceeded.

Insbesondere ist der Außendurchmesser des Tellers des Hartmann'schen Generators für reinen Sauerstoff in Bezug auf den Außendurchmesser eines Tellers des Hartmann'schen Generators für Pressluft, Dampf, und dergleichen, bei gleichbleibender Lanze einer Brennvorrichtung derart verkleinert, dass die Austrittsgeschwindigkeit des Zerstäuber-mediums aus der Düse erhöht wird. Bei dem in Bezug auf den Außendurchmesser des Tellers des Hartmann'schen Generators für Pressluft, Dampf, und dergleichen, verkleinerten Tellerdurchmesser für reinen Sauerstoff tritt bei gleichbleibender Austrittsöffnung für das Zerstäubermedium der Effekt auf, dass die Vermischung und Verbrennung von Zerstäubermedium, hier reiner Sauerstoff, und brennbarem Fluid mit einem derartigen Abstand zur Brennerdüse stattfindet, dass die Brennerdüse durch die hohe Flammentemperatur keinen Schaden mehr genommen hat.In particular, the outside diameter of the Hartmann's pure oxygen generator diameter relative to the outer diameter of a Hartmann generator for compressed air, steam, and the like is reduced, while the lance of a combustor is the same, such that the exit velocity of the atomizer medium is the nozzle is increased. With respect to the outside diameter of the plate of the Hartmann'schen generator for compressed air, steam, and the like, reduced diameter plate diameter for pure oxygen occurs at the same outlet opening for the Zerstäubermedium the effect that the mixing and combustion of Zerstäubermedium, here pure oxygen, and combustible fluid with such a distance from the burner nozzle takes place that the burner nozzle has taken no more damage due to the high flame temperature.

Als besonders vorteilhaft hat sich herausgestellt, wenn die Austrittsgeschwindigkeit des Zerstäubermediums aus der Düse im Wesentlichen verdoppelt wird.It has proven to be particularly advantageous if the exit velocity of the atomizing medium from the nozzle is substantially doubled.

Bei einem Verfahren zum Herstellen einer Brennvorrichtung wird so vorgegangen, dass eine Düse mit einem Hartmann'schen Generator an einer Lanze angeordnet wird, dessen Tellerdurchmesser so bemessen ist, dass die Austrittsgeschwindigkeit des reinen Sauerstoffs aus der Düse - bei gleicher Lanze wie für eine Düse für das Zerstäuben von Dampf, Pressluft, und dergleichen - so groß ist, dass die maximale Einsatztemperatur des Werkstoffs der Düse und/oder des Hartmann'schen Generators an der vorderen Stirnseite des Gehäuses der Düse nicht überschritten wird.In a method for producing a firing device, the procedure is such that a nozzle with a Hartmann generator is arranged on a lance, whose diameter is dimensioned such that the nozzle Exit velocity of pure oxygen from the nozzle - with the same lance as for a nozzle for atomizing steam, compressed air, and the like - is so great that the maximum operating temperature of the material of the nozzle and / or the Hartmann'schen generator on the front end of the housing of the nozzle is not exceeded.

Insbesondere wird ein Hartmann'scher Generator verwendet, durch dessen Tellerdurch-messer sich die Austrittsgeschwindigkeit des reinen Sauerstoffs gegenüber der Austritts-geschwindigkeit bei einem Hartmann'schen Generator für Dampf, Pressluft, oder dergleichen, im Wesentlichen verdoppelt.In particular, a Hartmann'scher generator is used, through whose plate diameter, the exit velocity of pure oxygen over the exit velocity at a Hartmann'schen generator for steam, compressed air, or the like, substantially doubled.

Weitere Einzelheiten, Merkmale und Vorteile der Erfindung ergeben sich aus der nachstehenden Beschreibung unter Bezugnahme auf die angeschlossenen Zeichnungen, in welchen bevorzugte Ausführungsformen dargestellt sind.Further details, features and advantages of the invention will become apparent from the following description with reference to the accompanying drawings, in which preferred embodiments are shown.

Es zeigt: Fig. 1 eine Lanze mit einer herkömmlichen Brennerdüse in einer Schnittansicht, Fig. 2 eine Lanze mit einer Ausführungsform einer erfindungsgemäßen Brennerdüse in einer Schnittansicht, Fig. 3 die Brennerdüse aus Fig. 1 in einer Schnittansicht, Fig. 4 die Brennerdüse aus Fig. 2 in einer Schnittansicht und Fig. 5 ein Detail aus Fig. 4 in vergrößertem Maßstab.It shows: Fig. 1 a lance with a conventional burner nozzle in a sectional view, Fig. 2 a lance with an embodiment of a burner nozzle according to the invention in a sectional view, Fig. 3 the burner nozzle off Fig. 1 in a sectional view, Fig. 4 the burner nozzle off Fig. 2 in a sectional view and Fig. 5 a detail from Fig. 4 on an enlarged scale.

In den Fig. 1 und 2 ist eine Brennvorrichtung mit einer Lanze 1 und einer Brennerdüse 2, 3 dargestellt. Die Lanze 1 weist einen Grundkörper 4 auf, innerhalb dem ein entlang der Längsachse 5 der Brennvorrichtung verlaufender, erster Kanal 6 für brennbares Fluid und ein zweiter Kanal 7 für Zerstäubermedium angeordnet ist. Der erste Kanal 6 ist zentral angeordnet, wogegen der zweite Kanal 7 als ein um den zentralen Kanal 6 verlaufender Ringkanal vorgesehen ist.In the Fig. 1 and 2 a combustion device with a lance 1 and a burner nozzle 2, 3 is shown. The lance 1 has a base body 4, within which a first channel 6 for combustible fluid running along the longitudinal axis 5 of the firing device and a second channel 7 for atomizing medium is arranged. The first channel 6 is arranged centrally, whereas the second channel 7 is provided as a running around the central channel 6 annular channel.

An dem der Brennerdüse 2 gegenüberliegendem Ende der Lanze 1 ist eine Zuführleitung 8 für das brennbare Fluid angeordnet, welche in den zentralen Kanal 6 mündet. Zudem ist eine Zuführleitung 9 für das Zerstäubermedium vorgesehen, die in den Rinkanal 7 mündet und im Wesentlichen senkrecht zur Längsachse 5 angeordnet ist. Über den zentralen Kanal 6 und den Ringkanal 7 gelangen das brennbare Fluid und das Zerstäubermedium in die Brennerdüse 2, 3.At which the burner nozzle 2 opposite end of the lance 1 is arranged a supply line 8 for the combustible fluid, which opens into the central channel 6. In addition, a supply line 9 is provided for the atomizer, which opens into the Rinkanal 7 and is arranged substantially perpendicular to the longitudinal axis 5. Via the central channel 6 and the annular channel 7, the combustible fluid and the atomizer medium reach the burner nozzle 2, 3.

In Fig. 1 ist an der Lanze 1 eine herkömmliche Brennerdüse 2 angeordnet, wobei als Zerstäubermedium Pressluft oder Dampf oder dergleichen verwendet wird. Bei der verwendeten O-Ringabdichtung O' besteht die Problematik, dass Pressluft bzw. Dampf in den zentralen Kanal 6 für das brennbare Fluid eindringen kann. Das Eindringen von Zerstäubermedium ist bei einer Pressluft - oder Dampfzerstäubung jedoch ungefährlich.In Fig. 1 is arranged on the lance 1, a conventional burner nozzle 2, wherein the atomizing medium compressed air or steam or the like is used. In the used O-ring seal O ', there is the problem that compressed air or steam can penetrate into the central channel 6 for the combustible fluid. However, the penetration of atomizer medium is harmless in a compressed air or steam atomization.

In Fig. 2 ist an der Lanze 1 eine erfindungsgemäße Brennerdüse 3 angeordnet, wobei als Zerstäubermedium reiner Sauerstoff verwendet wird. Bei Sauerstoff ist es gefährlich wenn dieser in den zentralen Kanal 6 für das brennbare Fluid eindringt, weshalb die O-Ringdichtung O bei der Lanze 1 mit der erfindungsgemäßen Brennerdüse 3 gegenüber der Außenatmosphäre abdichtet.In Fig. 2 a burner nozzle 3 according to the invention is arranged on the lance 1, pure oxygen being used as the atomizing medium. With oxygen, it is dangerous if it penetrates into the central channel 6 for the combustible fluid, which is why the O-ring seal O seals at the lance 1 with the burner nozzle 3 according to the invention against the outside atmosphere.

Als brennbares Fluid kann in beiden Fällen beispielsweise Öl und flüssiger Schwefel verwendet werden.As a combustible fluid, for example, oil and liquid sulfur can be used in both cases.

In den Fig. 3 bzw. 4 ist die Verbrennerdüse 2, 3 aus den Fig. 1 bzw. 2 dargestellt. Die Brennerdüse 2, 3 besitzt einen Grundkörper 10, der im Inneren eines zylindrischen Gehäuses 11 angeordnet ist und im Bereich der vorderen Stirnseite 12 des Gehäuses 11 eine als Resonanzkammer 13 eines Hartmann'schen Generators dienende Ringnut aufweist. Im Grundkörper 10 verläuft ein erster, zentraler Kanal 14 als Fortführung des zentralen Kanals 6 für das brennbare Fluid, der in eine Austrittsöffnung 14' mündet. Der Autrittsöffnung 14' kann ein Verteiler für das brennbare Fluid in zugeordnet sein.In the Fig. 3 or 4 is the burner nozzle 2, 3 from the Fig. 1 or 2 shown. The burner nozzle 2, 3 has a base body 10, which is arranged in the interior of a cylindrical housing 11 and in the region of the front end face 12 of the housing 11 has an annular groove serving as a resonance chamber 13 of a Hartmann generator. In the main body 10 extends a first, central channel 14 as a continuation of the central channel 6 for the combustible fluid, which opens into an outlet opening 14 '. The supply opening 14 'may be associated with a distributor for the combustible fluid.

Zwischen Grundkörper 10 der Brennerdüse 2, 3 und dem zylindrischen Gehäuse 11 ist ein zweiter, ringförmiger Kanal 15 als Fortführung des Ringkanals 7 für das Zerstäuber-medium ausgebildet, der in einen gegen die Längsachse 5 hin gerichteten Düsenraum 16 endet. Der Düsenraum 16 mündet in die Resonanzkammer 13 des Hartmann'schen Generators, so dass das Zerstäubermedium in die Resonanzkammer 13 eindringt und in Schwingung versetzt wird. Das Zerstäubermedium tritt dann durch eine ringförmige Öffnung 17 aus, deren Weite - in Draufsicht auf die Brennerdüse 2, 3 gesehen - aus dem Abstand zwischen dem Innendurchmesser D1, D1' der Kappe 18 des zylindrischen Gehäuses 11 und dem Außendurchmesser D2, D2' des Tellers 19 des Hartmann'schen Generators gebildet ist.Between the base body 10 of the burner nozzle 2, 3 and the cylindrical housing 11, a second, annular channel 15 is formed as a continuation of the annular channel 7 for the atomizer medium, which ends in a nozzle chamber 16 directed against the longitudinal axis 5. The nozzle chamber 16 opens into the resonance chamber 13 of the Hartmann generator, so that the atomizer medium penetrates into the resonance chamber 13 and is set in oscillation. The Zerstäubermedium then exits through an annular opening 17 whose width - seen in plan view of the burner nozzle 2, 3 - from the distance between the inner diameter D1, D1 'of the cap 18 of the cylindrical housing 11 and the outer diameter D2, D2' of the plate 19 of the Hartmann generator is formed.

Durch den Hartmann'schen Generator wird ein Schwingungsfeld aufgebaut, durch welches das aus dem zentralen Kanal 14 austretende brennbare Fluid feinst zerstäubt wird. Das zerstäubte, brennbare Fluid wird mit dem Zerstäubermedium, welches den Hartmann'schen Generator betreibt, innig vermischt und verbrannt.By the Hartmann generator a vibration field is established, through which the emerging from the central channel 14 combustible fluid is atomized very fine. The atomized, combustible fluid is intimately mixed and burned with the atomizer medium operating the Hartmann generator.

In Fig. 3 ist der Außendurchmesser D2' des Tellers 19 des Hartmann'schen Generators größer als 15 mm. Dampf bzw. Pressluft und Öl vermischen sich unmittelbar nach der ringförmigen Öffnung 17 und verbrennen dort. Würde man bei dieser Brennerdüse 2 reinen Sauerstoff als Zerstäubermedium verwenden, so würde die höhere Flammentemperatur die Brennerdüse 2 beschädigen. Der Innendurchmesser D1' der Kappe 18 des zylindrischen Gehäuses 11 ist 18 mm, so dass der Quotient aus dem Außendurchmesser D2' des Tellers 19 des Hartmann'schen Generators und dem Innendurchmesser D1' der Kappe 18 des Gehäuses 11 der Brennerdüse 3 0,83 beträgt.In Fig. 3 the outer diameter D2 'of the plate 19 of the Hartmann generator is greater than 15 mm. Steam or compressed air and oil mix immediately after the annular opening 17 and burn there. If pure oxygen were used as atomizing medium in this burner nozzle 2, the higher flame temperature would damage the burner nozzle 2. The inner diameter D1 'of the cap 18 of the cylindrical housing 11 is 18 mm, so that the quotient of the outer diameter D2' of the plate 19 of the Hartmann generator and the inner diameter D1 'of the cap 18 of the housing 11 of the burner nozzle 3 is 0.83 ,

Beispielsweise kann der Außendurchmesser D2 des Tellers 19 des Hartmann'schen Generators im Rahmen der Erfindung kleiner als 15 mm sein, vorzugsweise kleiner als 12 mm, insbesondere ca. 11 mm. Bei einer Verkleinerung des Tellerdurchmessers des Hartmann'schen Generators von 15 mm auf 11 mm verdoppelt sich die Austrittsge-schwindigkeit des Sauerstoffs gegenüber Düsen mit Tellerdurchmesser ab 15 mm - bei gleicher Größe der Austrittsöffnung 17 für das Zerstäubermedium - nahezu.
In Fig. 4 ist der Außendurchmesser D2 des Tellers 19 des Hartmann'schen Generators 11mm. Der reine Sauerstoff und das Öl vermischen und verbrennen erst mit Abstand von der Brennerdüse 3, da aufgrund des gegenüber dem Tellerdurchmesser D2' gemäß Fig. 3 geringeren Tellerdurchmessers D2 die Austrittsgeschwindigkeit des reinen Sauerstoffs ansteigt. Der Innendurchmesser D1 der Kappe 18 des zylindrischen Gehäuses 11 ist 14 mm, so dass der Quotient aus dem Außendurchmesser D2 des Tellers 19 des Hartmann'-schen Generators und dem Innendurchmesser D1 der Kappe 18 des Gehäuses 11 der Brennerdüse 3 0,79 beträgt.
Der Quotient aus Außendurchmesser D2 des Tellers 19 des Hartmann'schen Generators und Innendurchmesser D1 der Kappe 18 des Gehäuses 3 der Brennerdüse 11 ist im Rahmen der Erfindung kleiner als 0,80. Das Verhältnis D2/D1 liegt zwischen 0,80 und 0,75, da sich bei diesen Ausführungsformen ein besonders vorteilhafter Strömungsbild des Sauerstoffes für die Verbrennung des Fluides bietet. Obwohl die Austrittsgeschwindigkeit des reinen Sauerstoffes an sich durch den Tellerdurchmesser des Hartmann'schen Generators bestimmt ist, hat sich überraschender Weise gezeigt, dass es zur Funktion der Sauerstoffdüse wesentlich auf das Verhältnis D2/D1 ankommt, und dass die Düse 3 vor allem in dem Bereich des Verhältnisses D2/D1 von 0,75 bis 0,8 dauerhaft richtig funktioniert.
Die erfindungsgemäße Düse 3 für reinen Sauerstoff gemäß den genannten Verhältnisses D2/D1 funktioniert bei Verwendung von Pressluft und Dampf od.dgl. nicht, da dann die entstehende Flamme aufgrund der zu großen Austrittsgeschwindigkeit abreissen würde.For example, the outer diameter D2 of the plate 19 of the Hartmann generator can be less than 15 in the context of the invention mm, preferably less than 12 mm, in particular about 11 mm. When the diameter of the Hartmann generator is reduced from 15 mm to 11 mm, the exit velocity of the oxygen is doubled compared with nozzles with a diameter of 15 mm or more, with the same size of the atomizing medium outlet 17.
In Fig. 4 is the outer diameter D2 of the plate 19 of the Hartmann generator 11mm. The pure oxygen and the oil mix and burn only at a distance from the burner nozzle 3, since due to the opposite to the plate diameter D2 'according to Fig. 3 smaller diameter plate D2 increases the exit velocity of pure oxygen. The inner diameter D1 of the cap 18 of the cylindrical housing 11 is 14 mm, so that the quotient of the outer diameter D2 of the plate 19 of the Hartmann's generator and the inner diameter D1 of the cap 18 of the housing 11 of the burner nozzle 3 is 0.79.
The quotient of the outer diameter D2 of the plate 19 of the Hartmann generator and the inner diameter D1 of the cap 18 of the housing 3 of the burner nozzle 11 is less than 0.80 in the context of the invention. The ratio D2 / D1 is between 0.80 and 0.75, since these embodiments offer a particularly advantageous flow pattern of the oxygen for the combustion of the fluid. Although the exit velocity of the pure oxygen per se is determined by the diameter of the plate of the Hartmann generator, it has surprisingly been found that the ratio of D 2 / D 1 depends essentially on the function of the oxygen nozzle, and that the nozzle 3 is above all in the range of the ratio D2 / D1 of 0.75 to 0.8 permanently works properly.
The inventive nozzle 3 for pure oxygen according to the said ratio D2 / D1 works when using compressed air and steam or the like. not, because then the resulting flame would tear off due to the excessive exit velocity.

Der Abstand zwischen dem Innendurchmesser D1, D1' der Kappe 18 des Gehäuses 11 und dem Außendurchmesser D2, D2' des Tellers 19 des Hartmann'schen Generators ist bei den Brennerdüsen 2, 3 gemäß den Fig. 3 und 4 gleich.The distance between the inner diameter D1, D1 'of the cap 18 of the housing 11 and the outer diameter D2, D2' of the plate 19 of the Hartmann generator is at the burner nozzles 2, 3 according to the 3 and 4 equal.

Fig. 5 zeigt den Bereich der ringförmigen Öffnung 17 für den reinen Sauerstoff in einem vergrößertem Maßstab. Die Weite der Austrittsöffnung 17 für den Sauerstoff entspricht dem Abstand zwischen der unteren Außenkante (20) des Tellers (19) des Hartmann'schen Generators und der oberen Innenkante (21) der Kappe (18) des Gehäuses (11). Die zwischen der Außenkante (20) und der Innenkante (21) gedachte Mantelfläche beträgt bei einer Höhe h von 4 mm ca. 315 mm2. Im Rahmen der Erfindung ist es bevorzugt, wenn die zwischen der unteren Außenkante des Tellers des Hartmann'schen Generators und der oberen Innenkante der Kappe des Gehäuses gebildete Mantelfläche kleiner als 415 mm2, vorzugsweise kleiner als 350 mm2, insbesondere kleiner als 315 mm2, ist. Auch bei diesen Ausführungsformen bietet sich ein besonders vorteilhaftes Strömungsbild des Sauerstoffes. Fig. 5 shows the area of the annular opening 17 for the pure oxygen in an enlarged scale. The width of the outlet opening 17 for the oxygen corresponds to the distance between the lower outer edge (20) of the plate (19) of the Hartmann's generator and the upper inner edge (21) of the cap (18) of the housing (11). The lateral surface intended between the outer edge (20) and the inner edge (21) is approximately 315 mm 2 at a height h of 4 mm. In the context of the invention, it is preferred if the lateral surface formed between the lower outer edge of the plate of the Hartmann generator and the upper inner edge of the cap of the housing is less than 415 mm 2 , preferably less than 350 mm 2 , in particular less than 315 mm 2 , is. Also in these embodiments, a particularly advantageous flow pattern of oxygen offers.

Zusammenfassend kann ein Ausführungsbeispiel der Erfindung wie folgt zusammengefasst werden:In summary, an embodiment of the invention can be summarized as follows:

Eine Brennerdüse 3 weist einen ersten, zentralen Kanal 14 für brennbares Fluid, eine erste, zentrale Austrittsöffnung 14' für das brennbare Fluid, einen zweiten ringförmig um den ersten, zentralen Kanal 14 angeordneten Kanal 15 für ein Zerstäubermedium und eine ringförmig um die erste, zentrale Austrittsöffnung 14' angeordnete Austrittsöffnung 17 für das Zerstäubermedium, in deren Bereich ein Hartmann'-scher Generator angeordnet ist, auf. Als Zerstäubermedium wird reiner Sauerstoff verwendet. Der Außendurchmesser D2 des Tellers 19 des Hartmann'schen Generators ist so bemessen, dass die Austrittsgeschwindigkeit des reinen Sauerstoffs aus der Düse 3 so groß ist, dass die maximale Einsatztemperatur des Werkstoffs der Düse und/oder des Hartmann'schen Generators im Bereich des Gehäuses 11 der Düse 3 nicht überschritten wird. Der Quotient aus Außendurchmesser D2 des Tellers 19 des Hartmann'schen Generators und Innendurchmesser D1 der Kappe 18 des Gehäuses 11 der Düse 3 liegt zwischen 0,75 und 0,80. Es tritt der Effekt auf, dass die Vermischung und Verbrennung von Sauerstoff und brennbarem Fluid mit einem derartigen Abstand zur Brennerdüse 3 stattfindet, dass die Brennerdüse 3 durch die hohe Flammentemperatur keinen Schaden erleidet.A burner nozzle 3 has a first, central combustible fluid channel 14, a first combustible fluid central outlet orifice 14 ', a second annular channel 15 for atomizing medium disposed annularly about the first, central channel 14, and a ring around the first, central one Outlet opening 14 'arranged outlet opening 17 for the Zerstäubermedium, in the region of a Hartmann'scher generator is arranged on. The atomizing medium is pure oxygen used. The outer diameter D2 of the plate 19 of the Hartmann generator is dimensioned such that the exit velocity of the pure oxygen from the nozzle 3 is so great that the maximum operating temperature of the material of the nozzle and / or the Hartmann generator in the region of the housing 11 the nozzle 3 is not exceeded. The quotient of outer diameter D2 of the plate 19 of the Hartmann generator and inner diameter D1 of the cap 18 of the housing 11 of the nozzle 3 is between 0.75 and 0.80. The effect occurs that the mixing and combustion of oxygen and combustible fluid takes place at such a distance from the burner nozzle 3 that the burner nozzle 3 is not damaged by the high flame temperature.

Claims (5)

  1. A burner nozzle (3) comprising a housing (11) having a cap (18), comprising a first central channel (14) for combustible fluid, comprising a central outlet opening (14') for the combustible fluid, comprising a second channel (15), which is arranged in a ring shape around the first central channel (14), for a vaporizer medium, comprising an outlet opening (17), which is arranged in a ring shape around the first, central outlet opening (14'), for the vaporizer medium, and comprising a Hartmann generator arranged in the region of the ring-shaped outlet opening (17), wherein the ring-shaped outlet opening (17) is formed by the spacing between the internal diameter (D1) of the cap (18) and the external diameter (D2) of the plate (19) of the Hartmann generator, and wherein the external diameter (D2) of the plate (19) of the Hartmann generator is dimensioned so that upon use of pure oxygen as the vaporizer medium, the exit speed of the vaporizer medium from the burner nozzle (3) is sufficiently large that the maximum usage temperature of the material of the burner nozzle and/or the Hartmann generator is not exceeded in the region of the housing (11) of the burner nozzle (3), characterized in that the quotient of external diameter (D2) of the plate (19) of the Hartmann generator and internal diameter (D1) of the cap (18) of the housing (11) of the burner nozzle (3) is between 0.75 and 0.80.
  2. A burning device comprising a lance (1) and a burner nozzle (3), characterized in that a burner nozzle according to Claim 1 is arranged on the lance (1).
  3. The burning device according to Claim 2, characterized in that an O-ring seal (O), which forms a seal in relation to the external atmosphere, is arranged on the lance (1).
  4. A use of a burner nozzle (3),
    - comprising a housing (11) having a cap (18),
    - comprising a first channel (14) for combustible fluid,
    - comprising a central outlet opening (14') for the combustible fluid,
    - comprising a second channel (15), which is arranged in a ring shape around the first, central channel (14), for a vaporizer medium,
    - comprising an outlet opening (17), which is arranged in a ring shape around the first, central outlet opening (14'), for the vaporizer medium,
    - and comprising a Hartmann generator arranged in the region of the ring-shaped outlet opening (17),
    - wherein the ring-shaped outlet opening (17) is formed by the spacing between the internal diameter (D1) of the cap (18) and the external diameter (D2) of the plate (19) of the Hartmann generator,
    - wherein the external diameter (D2) of the plate (19) of the Hartmann generator is dimensioned so that the exit speed of the vaporizer medium from the burner nozzle (3) is sufficiently large that the maximum usage temperature of the material of the burner nozzle and/or the Hartmann generator is not exceeded in the region of the housing (11) of the burner nozzle (3),
    - and wherein the quotient of external diameter (D2) of the plate (19) of the Hartmann generator and internal diameter (D1) of the cap (18) of the housing (11) of the burner nozzle (3) is between 0.75 and 0.80,
    for vaporizing the combustible fluid by pure oxygen as the vaporizer medium.
  5. The use of a burner nozzle (3) according to Claim 4 in a burning device comprising a lance (1), wherein the burner nozzle (3) is arranged on the lance (1).
EP10781800.7A 2009-11-02 2010-10-28 Burner nozzle Active EP2496879B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA1728/2009A AT509017B1 (en) 2009-11-02 2009-11-02 BURNER
PCT/AT2010/000406 WO2011050377A1 (en) 2009-11-02 2010-10-28 Burner nozzle

Publications (2)

Publication Number Publication Date
EP2496879A1 EP2496879A1 (en) 2012-09-12
EP2496879B1 true EP2496879B1 (en) 2018-01-24

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ID=43568143

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Application Number Title Priority Date Filing Date
EP10781800.7A Active EP2496879B1 (en) 2009-11-02 2010-10-28 Burner nozzle

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EP (1) EP2496879B1 (en)
CN (1) CN102667339A (en)
AT (1) AT509017B1 (en)
RU (1) RU2534922C2 (en)
WO (1) WO2011050377A1 (en)

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Publication number Priority date Publication date Assignee Title
AT521116B1 (en) * 2018-04-10 2020-03-15 Cs Comb Solutions Gmbh Atomizing nozzle

Family Cites Families (14)

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Publication number Priority date Publication date Assignee Title
DE1234687B (en) * 1964-02-13 1967-02-23 Ultrasonics Ltd Device for atomizing liquids in air or gases, in particular for atomizer burners
DE1551931A1 (en) * 1967-04-18 1970-05-21 Bergwerksverband Gmbh Burner with rotating atomizer beaker for burning coal-water mixtures
AT285791B (en) * 1968-12-23 1970-11-10 Dumag Offene Handelsgesselscha Device for spraying liquids, in particular liquid fuels
US3741484A (en) * 1970-09-30 1973-06-26 Decafix Ltd Atomisers
AT339456B (en) * 1974-09-20 1977-10-25 Dumag Ohg PROCEDURE FOR INCINERATING FLOWABLE SUBSTANCE MIXTURES AND BURNER NOZZLE FOR CARRYING OUT THE PROCESS
AT352849B (en) * 1975-10-01 1979-10-10 Dumag Ohg BURNER NOZZLE FOR THE COMBUSTION OF OIL AND / OR FUEL GAS
NL178928C (en) * 1976-02-04 1986-06-02 Nederlanden Staat IMPROVEMENT OF A PIEZO ELECTRIC FILTER WITH A VERY NARROW BAND.
SE451114B (en) * 1981-11-13 1987-09-07 Fluidcarbon International Ab SET FOR SPRAYING OF PARTICULATE DISPERSIONS AND SOLUTIONS
JPS61173016A (en) * 1985-01-25 1986-08-04 ドウマツク・オツフエネ・ハンデルスゲゼルシヤフト・ドクトル・テヒニツシエ・ルードヴイツヒ・カルーツア・ウント・コンパニー Combustion apparatus for fluid combustible medium and nozzle
SU1638460A1 (en) * 1988-11-09 1991-03-30 Научно-Производственное Объединение По Исследованию И Проектированию Энергетического Оборудования Им.И.И.Ползунова Acoustic injector
RU2103601C1 (en) * 1996-03-15 1998-01-27 Олег Александрович Солин Acoustic injector
RU2292999C2 (en) * 2003-10-06 2007-02-10 Государственное предприятие Научно-исследовательский институт машиностроения Apparatus for gas-jet cutting of materials
TWI381897B (en) * 2004-12-22 2013-01-11 Taiyo Nippon Sanso Corp Process for producing metallic ultra fine powder
RU2371257C1 (en) * 2008-07-09 2009-10-27 Алексей Викторович Гладилин Ultrasonic sprayer of liquid

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EP2496879A1 (en) 2012-09-12
AT509017A1 (en) 2011-05-15
WO2011050377A1 (en) 2011-05-05
RU2534922C2 (en) 2014-12-10
AT509017B1 (en) 2012-05-15
CN102667339A (en) 2012-09-12
RU2012122758A (en) 2013-12-10

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