EP0464436B1 - Cyclonic burner with cylindrical combustion chamber - Google Patents

Cyclonic burner with cylindrical combustion chamber Download PDF

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Publication number
EP0464436B1
EP0464436B1 EP91109846A EP91109846A EP0464436B1 EP 0464436 B1 EP0464436 B1 EP 0464436B1 EP 91109846 A EP91109846 A EP 91109846A EP 91109846 A EP91109846 A EP 91109846A EP 0464436 B1 EP0464436 B1 EP 0464436B1
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EP
European Patent Office
Prior art keywords
combustion chamber
gas
burner according
cyclonic burner
outlet slit
Prior art date
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EP91109846A
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German (de)
French (fr)
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EP0464436A3 (en
EP0464436A2 (en
Inventor
Heinz Mallek
Winfried Brunner
Markus Jennebach
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Forschungszentrum Juelich GmbH
Wamsler Umwelttechnik GmbH
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Forschungszentrum Juelich GmbH
Wamsler Umwelttechnik GmbH
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Publication of EP0464436A3 publication Critical patent/EP0464436A3/en
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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

Definitions

  • the invention relates to a cyclone burner with a cylindrical combustion chamber, as specified in the preamble of claim 1.
  • Exit openings in the combustion chamber wall are known for the exit of solid particles from a cylindrical combustion chamber, US Pat. No. 3,357,383. Some of the solid particles located directly on the combustion chamber wall can be removed from the combustion chamber via these outlet openings. Inserts corresponding to a combustion grate for removing ash from a cyclone burner are described in DE-PS 10 24 663, a cyclone burner with vertically arranged axis and deduction of the solid particles from funnel-shaped soil is known from DE-PS 974 562.
  • EP-A-0 271 642 discloses a cyclone burner with a cylindrical combustion chamber for burning a fuel gas / air mixture introduced tangentially into the combustion chamber.
  • outlet slots for solid particles carried by the fuel gas are provided, which collide with wall steps that are located behind the outlet slots as seen in the flow direction of the fuel gas / air mixture and stand out from the jacket towards the interior of the combustion chamber and into through the outlet slots get an ash room.
  • the separation is only partially successful.
  • particles can also be thrown back into the interior of the combustion chamber when hitting the wall steps instead of passing through the outlet slots.
  • the object of the invention is to provide a cyclone burner with a rapid and as complete as possible separation possibility for the solid particles located in the area of the combustion chamber near the wall.
  • the wall step is formed by a boundary surface of the outlet slot, the height of the wall step simultaneously determining the opening width of the outlet slot.
  • the wall step height is adapted to the particle fraction to be removed from the combustion chamber.
  • the wall step is thus open at the end of the solid particles for entry and the opening width of the formed outlet slot is given by the wall step height (height of the open end wall) measured in the radial direction, which then also determines the particle fraction that can be removed from the combustion chamber.
  • the wall step is adjustable, claim 2.
  • a complete separation of the solid particles separating out in the combustion chamber is supported according to claim 3 in that the outlet slot in the cylindrical jacket extends over its entire width. So that the solid particles from the combustion chamber can enter the separation chamber unhindered, the outlet slit has a flow cross-section that widens outwards in a wedge shape, claim 4.
  • a negative pressure is generated in relation to the pressure in the combustion chamber.
  • a bypass line leading from the separating space to the exhaust line is preferably used for this purpose. The vacuum is set by an adjustable throttle valve in the bypass line, claim 6.
  • Figures 1 to 3 show cyclone burners with cylindrical combustion chambers 1, the combustion chamber axes 2 are arranged horizontally.
  • a gas supply 3 for a fuel gas / air mixture In the exemplary embodiment, the gas supply 3 has two flow spaces 5, 6 separated from one another by a partition 4, through which fuel gas in the flow space 5 and air in the flow space 6 are introduced into the combustion chamber 1.
  • the fuel gas / air mixture that forms in the upper region of the combustion chamber is ignited at the start of the cyclone burner via a pilot burner 7.
  • the pilot burner 7 is inserted into the combustion chamber 1 through the jacket 8 thereof. With the pilot burner 7, the combustion chamber 1 can also be preheated to a suitable ignition temperature before the entry of fuel gas and air, at which the fuel gas / air mixture is combustible from the time of ignition with formation of only small amounts of harmful gas.
  • the exhaust gas formed in the combustion chamber 1 flows out via an exhaust gas line 9 with line parts 9a, 9b.
  • the exhaust pipe 9 is connected to the front of the combustion chamber 1, in the exemplary embodiment on a front 10 centrally and parallel to the combustion chamber axis 2.
  • the part 9a of the exhaust gas line 9, which forms the connection of the exhaust gas line to an end face 10 of the combustion chamber 1, has a narrower flow cross section 11 than the part 9b of the exhaust gas line 9 with a flow cross section 12.
  • the part 9a can be designed in the form of a nozzle, the Flow cross-section 11 from the connection of the exhaust gas line starting from the end face 10 to the mouth of part 9a in part 9b expanded like a Laval nozzle. This accelerates and stabilizes the exhaust gas flow from the combustion chamber 1, with a mixing effect for the burnout at the same time of the exhaust gas is reached.
  • the exhaust gas flows through part 9b to a heat exchanger not shown in the drawing.
  • the outlet slot 13 In the lower area of the combustion chamber 1 there is an outlet slot 13 for the discharge of solid particles which are introduced into the combustion chamber 1 with the fuel gas. The solid particles fall via the outlet slot into a separating space 14 into which the outlet slot opens.
  • the separating space has a closable opening 14a for ash removal from the separating space.
  • the outlet slot 13 extends over the entire width B of the combustion chamber 1, see FIG. 2, and is formed by a wall step 15, the end face of which is open to the entry of solid particles.
  • the outlet slot 13 has a flow cross section 16 which widens outwards in the jacket 8, the outlet slot widens outwards in a wedge shape.
  • the wall step 15 is formed by a boundary surface 17, which is arranged at an angle to an opposite radially extending boundary surface 18 of the outlet slot 13.
  • the formation of the wall step 15, in particular the wall step height 19 with which the wall step projects into the combustion chamber 1, and the wedge-shaped widening of the outlet slot determine the solid particle fraction which is discharged into the separation chamber 14 via the outlet slot 13.
  • the wall step height 19 of the wall step is adjustable.
  • a wall step 15a is designed as a flap and movable about an axis 20. It can be rotated on the combustion chamber wall in accordance with the desired particle separation. Since the solid particles concentrate on the inside of the jacket due to the centrifugal forces acting on them, the thicker the gas layer carrying the particles, the more the wall step 15a can be led into the free combustion chamber space. However, the position of the wall step 15a also influences the optimal combustion process in the combustion chamber, it must be regulated accordingly.
  • the outlet slot 13 runs in the jacket 8 at an angle 21 to the radial plane 22 of the combustion chamber 1. The angle 21 is dimensioned such that the particles emerge from the combustion chamber with as little resistance as possible.
  • the outlet slot 13 has a uniform flow cross section 16a.
  • a combustible gas mixture already enters the combustion chamber 1 via the gas supply 3.
  • a control flap 24 is arranged in the mouth area 23 of the gas supply 3.
  • the position of the control flap 24 is changed with the aim of changing the gas inlet cross section, with the aim of making it constant
  • the entry velocity also influences the burnout of the gas mixture in the combustion chamber.
  • combustion chamber 1 according to FIG. 3 is constructed in the same way as the combustion chamber according to the embodiment according to FIGS. 1 and 2.
  • the same reference numerals as in FIGS. 1 and 2 were therefore used in FIG. 3.
  • a bypass 25 leads from the separating space 14 to the exhaust gas line 9. It opens into part 9b of the exhaust gas line.
  • a throttle valve 26 is used, the position of which allows the desired negative pressure in the separating chamber 14 to be set relative to the pressure in the combustion chamber 1. The resulting pressure difference between combustion chamber 1 and separation chamber 14 influences the desired separation of the solid particles.
  • baffle plates 27 are used in the exemplary embodiment according to FIG. 1 in the separating space 14 of the cyclone burner, which hold back the solid particles in the separating space.
  • FIGS. 4 and 5 show a cyclone burner whose combustion chamber axis 28 is arranged vertically.
  • fuel gas and air are tangentially into a combustion chamber from the side 29 introduced via a fuel gas inlet 30 and an air line 31.
  • solid particles enter the combustion chamber 29 into the combustion chamber, which are preferably discharged from the combustion chamber 29 via an outlet slot 34 which is offset approximately 225 ° from the access 32 in the jacket 33 of the combustion chamber.
  • an adjustable wall step 15b is attached to the outlet slot 34.
  • the solid particles emerge via the wall step 15b in a separating space 35 which is cylindrical in the same way as the combustion chamber 29 and also has an axis arranged vertically.
  • the axis of the separating space 35 coincides with the combustion chamber axis 28 in the exemplary embodiment, the combustion chamber 29 is thus arranged centrally in the separating space 35.
  • the combustion chamber 29 has a chamber base 36 that slopes conically from its center toward the jacket 33.
  • passage openings for the solid particles are also provided in the bottom. The passage openings are not shown in FIG. 5.
  • the exhaust gas flows out of the combustion chamber 29 centrally.
  • Flow arrows 37 are shown schematically in FIG. 5 for the exhaust gas flow.
  • the hot exhaust gas is discharged within an exhaust gas line 38; in the exemplary embodiment, the exhaust gas line is connected to a heat exchanger (not shown in FIG. 5), via which the hot exhaust gas releases its heat to a heating medium.
  • the exhaust line 38 is open to the separation space 35.
  • the gas entering the separation chamber 35 when the solid particles are removed from the combustion chamber 29 can thus also be drawn off together with the exhaust gas directly via the exhaust line 38.
  • a flue gas recirculation 39 is also connected to the separating space 35, the access of which can be opened by means of an adjusting flap 40.
  • the amount of gas returned through the flue gas recirculation is regulated by adjusting the opening width of the control flap 40 accordingly.
  • a solid lock 42 is provided for emptying the separating space, which is opened for discharge depending on the amount of solid.
  • the central position of the combustion chamber 29 within the separating space 35 and the free flow deflection of the exhaust gas in the ceiling area of the separating space serve to largely clean the hot exhaust gas withdrawing from the combustion chamber before entering the heat exchanger. Solid particles introduced into the combustion chamber by the fuel gas / air mixture are separated in the separation room according to the desired requirements. A clogging of the heat exchanger with dust is thus sufficiently prevented in the cyclone burner according to the invention.
  • FIG. 6 shows a further combustion chamber with a horizontal combustion chamber axis in cross section.
  • This combustion chamber differs from the combustion chamber shown in FIGS. 1 and 2 essentially by a second particle outlet slot: in addition to a lower particle outlet slot 43 with wall step 44, which projects into the combustion chamber towards the interior 45, there is another particle outlet slot in the inlet area of the combustion gas and combustion air 46 arranged with wall step 47.
  • the wall step 47 has a height 19 which lifts off from the wall side 48 of the interior 45.
  • the particles entering the combustion chamber with the fuel gases are thus discharged from the combustion chamber at two points, the coarse particle fraction being discharged essentially via the particle outlet slot 46 and the finer fraction via the particle outlet slot 43.
  • the heights 19 of the wall steps 44 and 47 can also be dimensioned and designed differently in accordance with the desired degree of separation in the combustion chamber.
  • combustion air and fuel gas at the gas supply 3 still enter the combustion chamber separately, the combustion air via an air duct 49 opening at the gas supply 3, and the fuel gas via a fuel gas inlet duct 50.
  • the combustion chamber according to FIG. 6 functions in the same way as the combustion chamber shown in FIGS. 1 and 2. Identically designed and functionally retained device parts are therefore marked in FIG. 6 with the same reference numerals as in the aforementioned figures.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cyclones (AREA)
  • Incineration Of Waste (AREA)
  • Combustion Of Fluid Fuel (AREA)
  • Gasification And Melting Of Waste (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

For a cyclonic burner with a cylindrical combustion chamber (Figure 1, reference 1) and a gas supply (3) opening tangentially into the combustion chamber, to separate solid particles carried along by the combustion gas into the combustion chamber, there is provided in the casing (8) of the combustion chamber an outlet slot (13) which has a wall step (15) projecting into the combustion chamber (1) for introducing the solid particles into the outlet slot (13). <IMAGE>

Description

Die Erfindung bezieht sich auf einen Zyklonbrenner mit zylindrischer Brennkammer, wie im Oberbegriff des Patentanspruches 1 angegeben.The invention relates to a cyclone burner with a cylindrical combustion chamber, as specified in the preamble of claim 1.

Bei Brennkammern, denen als Brennstoffe in einem Feststoffvergaser erzeugte Gasgemische zugeführt werden, ist damit zu rechnen, daß mit den Brenngasen auch Feststoffpartikeln eingeführt werden, die sich in der Brennkammer absetzen. Dies ist insbesondere der Fall, wenn die Brennkammer unmittelbar am Gasausgang des Feststoffvergasers angeschlossen ist. Nachteilig sind vor allem vom Brenngas mitgerissene unverbrennbare Inertstoffpartikeln, die aus der Brennkammer abgetrennt werden müssen, bevor das in der Brennkammer erzeugte heiße Abgas in einen nachgeschalteten Wärmetauscher einströmt. Es muß vermieden werden, daß sich der Wärmetauscher durch sich absetzende Feststoffpartikeln zusetzt.In combustion chambers to which gas mixtures generated as fuels are fed in a solid gasifier, it is to be expected that the fuel gases will also introduce solid particles which settle in the combustion chamber. This is particularly the case if the combustion chamber is connected directly to the gas outlet of the solid gasifier. The main disadvantage is the incombustible inert substance particles entrained by the fuel gas, which have to be separated from the combustion chamber before the hot exhaust gas generated in the combustion chamber flows into a downstream heat exchanger. It must be avoided that the heat exchanger becomes clogged by solid particles that settle.

Zum Austritt von Feststoffpartikeln aus einer zylindrischen Brennkammer sind Austrittsöffnungen in der Brennkammerwand bekannt, US-PS 3,357,383. Über diese Austrittsöffnungen kann ein Teil der sich unmittelbar an der Brennkammerwand befindlichen Feststoffpartikeln aus der Brennkammer entfernt werden. Einem Feuerungsrost entsprechende Einsätze zum Abführen von Asche aus einem Zyklonbrenner werden in DE-PS 10 24 663 beschrieben, ein Zyklonbrenner mit senkrecht angeordneteter Achse und Abzug der Feststoffartikeln von trichterförmigem Boden ist aus DE-PS 974 562 bekannt.Exit openings in the combustion chamber wall are known for the exit of solid particles from a cylindrical combustion chamber, US Pat. No. 3,357,383. Some of the solid particles located directly on the combustion chamber wall can be removed from the combustion chamber via these outlet openings. Inserts corresponding to a combustion grate for removing ash from a cyclone burner are described in DE-PS 10 24 663, a cyclone burner with vertically arranged axis and deduction of the solid particles from funnel-shaped soil is known from DE-PS 974 562.

Aus EP-A-0 271 642 ist ein Zyklonbrenner mit zylindrischer Brennkammer zur Verbrennung eines tangential in die Brennkammer eingeführten Brenngas/Luft-Gemisches bekannt. Im Mantel der Brennkammer sind Austrittsschlitze für vom Brenngas mitgeführte Feststoffpartikeln vorgesehen, die auf Wandstufen, die in Strömungsrichtung des Brenngas/Luft-Gemisches gesehen hinter den Austrittsschlitzen angebracht sind und sich zum Innenraum der Brennkammer hin vom Mantel abheben, aufprallen und durch die Austrittsschlitze hindurch in einen Ascheraum gelangen. Je nach abzuscheidender Partikelfraktion gelingt das Abscheiden jedoch nur teilweise. Insbesondere können Partikel beim Aufprallen auf die Wandstufen statt durch die Austrittsschlitze hindurchzutreten, auch zurück in den Innenraum der Brennkammer geschleudert werden.EP-A-0 271 642 discloses a cyclone burner with a cylindrical combustion chamber for burning a fuel gas / air mixture introduced tangentially into the combustion chamber. In the jacket of the combustion chamber, outlet slots for solid particles carried by the fuel gas are provided, which collide with wall steps that are located behind the outlet slots as seen in the flow direction of the fuel gas / air mixture and stand out from the jacket towards the interior of the combustion chamber and into through the outlet slots get an ash room. Depending on the particle fraction to be separated, the separation is only partially successful. In particular, particles can also be thrown back into the interior of the combustion chamber when hitting the wall steps instead of passing through the outlet slots.

Aufgabe der Erfindung ist es, bei einem Zyklonbrenner eine rasche und möglichst vollständige Abtrennmöglichkeit für die sich im wandnahen Bereich der Brennkammer befindenden Feststoffpartikeln zu schaffen.The object of the invention is to provide a cyclone burner with a rapid and as complete as possible separation possibility for the solid particles located in the area of the combustion chamber near the wall.

Gelöst wird diese Aufgabe bei einem Zyklonbrenner der eingangs genannten Art durch die in Patentanspruch 1 angegebenen Merkmale. Die Wandstufe wird von einer Begrenzungsfläche des Austrittsschlitzes gebildet, wobei die Höhe der Wandstufe zugleich die Öffnungsweite des Austrittschlitzes bestimmt. Die Wandstufenhöhe wird der aus der Brennkammer abzuführenden Partikelfraktion angepaßt. Die Wandstufe ist somit zum Eintritt der Feststoffpartikeln an Ihrer Stirnseite geöffnet und die Öffnungsweite des ausgebildten Austrittsschlitzes ist durch die in radialer Richtung bemessene Wandstufenhöhe (Höhe der geöffneten Stirnwand) gegeben, die dann auch die aus der Brennkammer abführbare Partikelfraktion bestimmt. Zur Steuerung des gewünschten Austritts der Partikeln ist die Wandstufe verstellbar ausgeführt, Patentanspruch 2.This object is achieved in a cyclone burner of the type mentioned by the features specified in claim 1. The wall step is formed by a boundary surface of the outlet slot, the height of the wall step simultaneously determining the opening width of the outlet slot. The wall step height is adapted to the particle fraction to be removed from the combustion chamber. The wall step is thus open at the end of the solid particles for entry and the opening width of the formed outlet slot is given by the wall step height (height of the open end wall) measured in the radial direction, which then also determines the particle fraction that can be removed from the combustion chamber. To control the desired exit of the particles, the wall step is adjustable, claim 2.

Eine vollständige Abtrennung der sich in der Brennkammer abscheidenden Feststoffpartikeln wird nach Patentanspruch 3 dadurch unterstützt, daß sich der Austrittsschlitz im zylindrischen Mantel über dessen gesamter Breite erstreckt. Damit die Feststoffpartikeln aus der Brennkammer in den Abscheideraum ungehindert eintreten können, weist der Austrittsschlitz einen sich nach außen keilförmig erweiternden Strömungsquerschnitt auf, Patentanspruch 4. Im Abscheideraum wird ein Unterdruck gegenüber dem Druck in der Brennkammer erzeugt. Bevorzugt dient dazu nach Patentanspruch 5 eine vom Abscheideraum zur Abgasleitung geführte Bypaßleitung. Der Unterdruck wird durch eine verstellbare Drosselklappe in der Bypaßleitung eingestellt, Patentanspruch 6.A complete separation of the solid particles separating out in the combustion chamber is supported according to claim 3 in that the outlet slot in the cylindrical jacket extends over its entire width. So that the solid particles from the combustion chamber can enter the separation chamber unhindered, the outlet slit has a flow cross-section that widens outwards in a wedge shape, claim 4. In the separation chamber, a negative pressure is generated in relation to the pressure in the combustion chamber. According to claim 5, a bypass line leading from the separating space to the exhaust line is preferably used for this purpose. The vacuum is set by an adjustable throttle valve in the bypass line, claim 6.

Die Erfindung und weitere Ausgestaltungen der Erfindung werden nachfolgend anhand von Ausführungsbeispielen näher erläutert, die in der Zeichnung schematisch wiedergegeben sind. Die Zeichnung zeigt im einzelnen:

Figur 1
Querschnitt einer Zyklonbrennkammer mit waagerecht angeordneter Brennkammerachse und mit Brenngaseintritt im oberen und Partikelaustritt im unteren Kammerbereich gemäß Schnittlinie I/I nach Figur 2;
Figur 2
Längsschnitt einer Brennkammer gemäß Figur 1 nach Schnittlinie II/II;
Figur 3
Querschnitt einer Zyklonbrennkammer mit verstellbarer Wandstufe;
Figur 4
Querschnitt einer Zyklonbrennkammer mit senkrechter Brennkammerachse und seitlichem Brenngaseintritt und seitlichem Partikelaustritt gemäß Schnittlinie IV/IV nach Figur 5;
Figur 5
Längsschnitt einer Brennkammer gemäß Figur 4 nach Schnittlinie V/V;
Figur 6
Querschnitt einer Zyklonkammer mit waagerecht angeordneter Brennkammerachse und zwei Partikelaustrittsschlitzen.
The invention and further refinements of the invention are explained in more detail below on the basis of exemplary embodiments which are shown schematically in the drawing. The drawing shows in detail:
Figure 1
Cross section of a cyclone combustion chamber with a horizontally arranged combustion chamber axis and with fuel gas inlet in the upper and particle outlet in the lower chamber area according to section line I / I according to FIG. 2;
Figure 2
Longitudinal section of a combustion chamber according to Figure 1 along section line II / II;
Figure 3
Cross section of a cyclone combustion chamber with adjustable wall step;
Figure 4
Cross-section of a cyclone combustion chamber with a vertical combustion chamber axis and lateral fuel gas inlet and lateral particle outlet according to section line IV / IV according to FIG. 5;
Figure 5
Longitudinal section of a combustion chamber according to Figure 4 along section line V / V;
Figure 6
Cross-section of a cyclone chamber with a horizontally arranged combustion chamber axis and two particle outlet slots.

Die Figuren 1 bis 3 zeigen Zyklonbrenner mit zylindrischen Brennkammern 1, deren Brennkammerachsen 2 waagerecht angeordnet sind. Beim Zyklonbrenner nach Figuren 1 und 2 mündet im oberen Bereich der waagerecht liegenden Brennkammer 1 eine Gaszufuhr 3 für ein Brenngas/Luft-Gemisch. Im Ausführungsbeispiel weist die Gaszufuhr 3 zwei voneinander durch eine Trennwand 4 getrennte Strömungsräume 5,6 auf, durch die im Strömungsraum 5 Brenngas und im Strömungsraum 6 Luft in die Brennkammer 1 eingeleitet werden. Das sich hierbei im oberen Bereich der Brennkammer bildende Brenngas/ Luft-Gemisch wird beim Start des Zyklonbrenners über einen Zündbrenner 7 gezündet. Der Zündbrenner 7 ist in die Brennkammer 1 durch deren Mantel 8 hindurch eingeführt. Mit dem Zündbrenner 7 läßt sich die Brennkammer 1 auch vor Eintritt von Brenngas und Luft auf eine geeignete Zündtemperatur vorwärmen, bei der das Brenngas/Luft-Gemisch schon vom Zündzeitpunkt an unter Ausbildung nur geringer Schadgasanteile verbrennbar ist.Figures 1 to 3 show cyclone burners with cylindrical combustion chambers 1, the combustion chamber axes 2 are arranged horizontally. In the cyclone burner according to FIG. 1 and 2 opens in the upper region of the horizontally lying combustion chamber 1, a gas supply 3 for a fuel gas / air mixture. In the exemplary embodiment, the gas supply 3 has two flow spaces 5, 6 separated from one another by a partition 4, through which fuel gas in the flow space 5 and air in the flow space 6 are introduced into the combustion chamber 1. The fuel gas / air mixture that forms in the upper region of the combustion chamber is ignited at the start of the cyclone burner via a pilot burner 7. The pilot burner 7 is inserted into the combustion chamber 1 through the jacket 8 thereof. With the pilot burner 7, the combustion chamber 1 can also be preheated to a suitable ignition temperature before the entry of fuel gas and air, at which the fuel gas / air mixture is combustible from the time of ignition with formation of only small amounts of harmful gas.

Das in der Brennkammer 1 gebildete Abgas strömt über eine Abgasleitung 9 mit Leitungsteilen 9a, 9b ab. Die Abgasleitung 9 ist an der Brennkammer 1 stirnseitig, im Ausführungsbeispiel an einer Stirnseite 10 zentral und parallel zur Brennkammerachse 2 verlaufend angeschlossen. Der Teil 9a der Abgasleitung 9, der den Anschluß der Abgasleitung an einer Stirnseite 10 der Brennkammer 1 bildet, weist einen engeren Strömungsquerschnitt 11 auf, als der Teil 9b der Abgasleitung 9 mit Strömungsquerschnitt 12. Der Teil 9a kann düsenformig ausgebildet sein, wobei sich der Strömungsquerschnitt 11 vom Anschluß der Abgasleitung von der Stirnseite 10 ausgehend bis zur Mündung des Teils 9a in den Teil 9b lavaldüsenartig erweitert. Dies beschleunigt und stabilisiert den Abgasstrom aus der Brennkammer 1, wobei zugleich ein Durchmischungseffekt für den Ausbrand des Abgases erreicht wird. Durch den Teil 9b strömt das Abgas zu einem in der Zeichnung nicht wiedergegebenen Wärmetauscher ab.The exhaust gas formed in the combustion chamber 1 flows out via an exhaust gas line 9 with line parts 9a, 9b. The exhaust pipe 9 is connected to the front of the combustion chamber 1, in the exemplary embodiment on a front 10 centrally and parallel to the combustion chamber axis 2. The part 9a of the exhaust gas line 9, which forms the connection of the exhaust gas line to an end face 10 of the combustion chamber 1, has a narrower flow cross section 11 than the part 9b of the exhaust gas line 9 with a flow cross section 12. The part 9a can be designed in the form of a nozzle, the Flow cross-section 11 from the connection of the exhaust gas line starting from the end face 10 to the mouth of part 9a in part 9b expanded like a Laval nozzle. This accelerates and stabilizes the exhaust gas flow from the combustion chamber 1, with a mixing effect for the burnout at the same time of the exhaust gas is reached. The exhaust gas flows through part 9b to a heat exchanger not shown in the drawing.

Im unteren Bereich der Brennkammer 1 ist ein Austrittsschlitz 13 zur Ableitung von Feststoffpartikeln vorgesehen, die in die Brennkammer 1 mit dem Brenngas eingeführt werden. Über den Austrittsschlitz fallen die Feststoffpartikeln in einen Abscheideraum 14, in den der Austrittsschlitz mündet. Der Abscheideraum weist eine verschließbare Öffnung 14a zur Entaschung des Abscheideraums auf. Der Austrittsschlitz 13 dehnt sich im Ausführungsbeispiel über die gesamte Breite B der Brennkammer 1 aus, siehe Figur 2, und wird von einer Wandstufe 15 gebildet, deren Stirnseite zum Eintritt von Feststoffpartikeln geöffnet ist. Der Austrittsschlitz 13 weist im Ausführungsbeispiel nach Figuren 1 und 2 einen sich im Mantel 8 nach außen erweiternden Strömungsquerschnitt 16 auf, der Austrittsschlitz erweitert sich nach außen keilförmig. Die Wandstufe 15 wird hierzu von einer Begrenzungsfläche 17 gebildet, die zu einer ihr gegenüberliegenden radial verlaufenden Begrenzungsfläche 18 des Austrittsschlitzes 13 im Winkel geneigt angeordnet ist. Von der Ausbildung der Wandstufe 15, insbesondere von deren Wandstufenhöhe 19, mit der die Wandstufe in die Brennkammer 1 hineinragt, und von der keilförmigen Erweiterung des Austrittsschlitzes wird die Feststoffpartikelfraktion bestimmt, die über den Austrittsschlitz 13 in den Abscheideraum 14 abgeführt wird. Je höher die Wandstufe 15 bemessen ist, um so mehr Feststoffpartikeln lassen sich aus der Brennkammer 1 hinaus in den Abscheideraum 14 leiten.In the lower area of the combustion chamber 1 there is an outlet slot 13 for the discharge of solid particles which are introduced into the combustion chamber 1 with the fuel gas. The solid particles fall via the outlet slot into a separating space 14 into which the outlet slot opens. The separating space has a closable opening 14a for ash removal from the separating space. In the exemplary embodiment, the outlet slot 13 extends over the entire width B of the combustion chamber 1, see FIG. 2, and is formed by a wall step 15, the end face of which is open to the entry of solid particles. In the exemplary embodiment according to FIGS. 1 and 2, the outlet slot 13 has a flow cross section 16 which widens outwards in the jacket 8, the outlet slot widens outwards in a wedge shape. For this purpose, the wall step 15 is formed by a boundary surface 17, which is arranged at an angle to an opposite radially extending boundary surface 18 of the outlet slot 13. The formation of the wall step 15, in particular the wall step height 19 with which the wall step projects into the combustion chamber 1, and the wedge-shaped widening of the outlet slot determine the solid particle fraction which is discharged into the separation chamber 14 via the outlet slot 13. The higher the wall step 15 is dimensioned, the more solid particles can be conducted out of the combustion chamber 1 into the separation chamber 14.

In Figur 3 ist die Wandstufenhöhe 19 der Wandstufe verstellbar eingerichtet. Eine Wandstufe 15a ist als Klappe ausgebildet und um eine Achse 20 beweglich. Sie kann entsprechend der gewünschten Partikelabscheidung an der Brennkammerwand gedreht werden. Da sich die Feststoffpartikeln infolge der auf sie einwirkenden Zentrifugalkräfte an der Innenseite des Mantels konzentrieren, kann die Wandstufe 15a je stärker in den freien Brennkammerraum hineingeführt werden, je dicker die Partikeln führende Gasschicht ist. Die Stellung der Wandstufe 15a beeinflußt jedoch auch den optimalen Verbrennungsablaufs in der Brennkammer, sie ist entsprechend zu regulieren. Der Austrittsschlitz 13 verläuft im Ausführungsbeispiel nach Figur 3 im Mantel 8 in einem Winkel 21 zur Radialebene 22 der Brennkammer 1. Der Winkel 21 ist derart bemessen, daß die Partikeln aus der Brennkammer mit möglichst geringem Widerstand austreten. Der Austrittsschlitz 13 weist einen gleichförmigen Strömungsquerschnitt 16a auf.In Figure 3, the wall step height 19 of the wall step is adjustable. A wall step 15a is designed as a flap and movable about an axis 20. It can be rotated on the combustion chamber wall in accordance with the desired particle separation. Since the solid particles concentrate on the inside of the jacket due to the centrifugal forces acting on them, the thicker the gas layer carrying the particles, the more the wall step 15a can be led into the free combustion chamber space. However, the position of the wall step 15a also influences the optimal combustion process in the combustion chamber, it must be regulated accordingly. In the exemplary embodiment according to FIG. 3, the outlet slot 13 runs in the jacket 8 at an angle 21 to the radial plane 22 of the combustion chamber 1. The angle 21 is dimensioned such that the particles emerge from the combustion chamber with as little resistance as possible. The outlet slot 13 has a uniform flow cross section 16a.

Im Ausführungsbeispiel nach Figur 3 tritt in die Brennkammer 1 über die Gaszufuhr 3 bereits ein brennbares Gasgemisch ein. Die Trennwand 4 und die getrennten Strömungsräume 5, 6, wie sie im Ausführungsbeispiel nach Figuren 1 und 2 vorhanden sind, sind entfallen. Zur Regelung der Zufuhr des Gasgemisches, insbesondere zur Regelung der Einströmgeschwindigkeit des Gasgemisches in die Brennkammer, ist im Mündungsbereich 23 der Gaszufuhr 3 eine Regelklappe 24 angeordnet. Je nach Gasmenge, die entsprechend der gewünschten Wärmeerzeugungsleistung in die Brennkammer einzuführen ist, wird zur Veränderung des Gaseintrittsquerschnitts die Stellung der Regelklappe 24 mit dem Ziel verändert, eine konstante Eintrittsgeschwindigkeit für das brennbare Gasgemisch zu erreichen. Die Eintrittsgeschwindigkeit beeinflußt neben der Partikelabscheidung auch den Ausbrand des Gasgemisches in der Brennkammer.In the exemplary embodiment according to FIG. 3, a combustible gas mixture already enters the combustion chamber 1 via the gas supply 3. The partition 4 and the separate flow spaces 5, 6, as are present in the exemplary embodiment according to FIGS. 1 and 2, have been omitted. To regulate the supply of the gas mixture, in particular to regulate the inflow speed of the gas mixture into the combustion chamber, a control flap 24 is arranged in the mouth area 23 of the gas supply 3. Depending on the amount of gas that is to be introduced into the combustion chamber in accordance with the desired heat generation output, the position of the control flap 24 is changed with the aim of changing the gas inlet cross section, with the aim of making it constant To achieve entry velocity for the combustible gas mixture. In addition to particle separation, the entry velocity also influences the burnout of the gas mixture in the combustion chamber.

Im übrigen ist die Brennkammer 1 nach Figur 3 in gleicher Weise wie die Brennkammer nach dem Ausführungsbeispiel gemäß Figuren 1 und 2 aufgebaut. Für die gegenüber diesem Beispiel unverändert gebliebenen Teile der Brennkammer wurden deshalb in Figur 3 die gleichen Bezugszeichen wie in den Figuren 1 und 2 benutzt.Otherwise, the combustion chamber 1 according to FIG. 3 is constructed in the same way as the combustion chamber according to the embodiment according to FIGS. 1 and 2. For the parts of the combustion chamber that have remained unchanged from this example, the same reference numerals as in FIGS. 1 and 2 were therefore used in FIG. 3.

Vom Abscheideraum 14 führt ein Bypass 25 zur Abgasleitung 9. Er mündet im Teil 9b der Abgasleitung. Im Bypass ist eine Drosselklappe 26 eingesetzt, über deren Stellung sich der im Abscheideraum 14 gewünschte Unterdruck gegenüber dem Druck in der Brennkammer 1 einstellen läßt. Die sich daraus ergebende Druckdifferenz zwischen Brennkammer 1 und Abscheideraum 14 beeinflußt die gewünschte Abscheidung der Feststoffpartikeln.A bypass 25 leads from the separating space 14 to the exhaust gas line 9. It opens into part 9b of the exhaust gas line. In the bypass, a throttle valve 26 is used, the position of which allows the desired negative pressure in the separating chamber 14 to be set relative to the pressure in the combustion chamber 1. The resulting pressure difference between combustion chamber 1 and separation chamber 14 influences the desired separation of the solid particles.

Um ein Mitreißen der Feststoffpartikeln aus dem Abscheideraum 14 über den Bypass 25 in die Abgasleitung 9 zu vermeiden und im Abscheideraum die Partikelbewegung zu beruhigen, sind im Ausführungsbeispiel nach Figur 1 im Abscheideraum 14 des Zyklonbrenners Prallbleche 27 eingesetzt, die die Feststoffpartikeln im Abscheideraum zurückhalten.In order to avoid entrainment of the solid particles from the separating space 14 via the bypass 25 into the exhaust pipe 9 and to calm the particle movement in the separating space, baffle plates 27 are used in the exemplary embodiment according to FIG. 1 in the separating space 14 of the cyclone burner, which hold back the solid particles in the separating space.

In Figuren 4 und 5 ist ein Zyklonbrenner wiedergegeben, dessen Brennkammerachse 28 senkrecht angeordnet ist. Bei diesem Zyklonbrenner wird Brenngas und Luft von der Seite her tangential in eine Brennkammer 29 über einen Brenngaseintritt 30 und eine Luftleitung 31 eingeführt. Am Zugang 32 des Brenngas/Luft-Gemisches treten zusammen mit dem Gasgemisch in die Brennkammer 29 Feststoffpartikeln ein, die aus der Brennkammer 29 bevorzugt über einen etwa um 225° gegenüber dem Zugang 32 im Mantel 33 der Brennkammer versetzt angeordneten Austrittsschlitz 34 abgeführt werden. Am Austrittsschlitz 34 ist hierzu eine verstellbare Wandstufe 15b angebracht.FIGS. 4 and 5 show a cyclone burner whose combustion chamber axis 28 is arranged vertically. With this cyclone burner, fuel gas and air are tangentially into a combustion chamber from the side 29 introduced via a fuel gas inlet 30 and an air line 31. At the access 32 of the fuel gas / air mixture, solid particles enter the combustion chamber 29 into the combustion chamber, which are preferably discharged from the combustion chamber 29 via an outlet slot 34 which is offset approximately 225 ° from the access 32 in the jacket 33 of the combustion chamber. For this purpose, an adjustable wall step 15b is attached to the outlet slot 34.

Über die Wandstufe 15b treten die Feststoffpartikeln in einen in gleicher Weise wie die Brennkammer 29 zylindrisch geformten Abscheideraum 35 mit ebenfalls senkrecht angeordneter Achse aus. Die Achse des Abscheideraums 35 fällt im Ausführungsbeispiel mit der Brennkammerachse 28 zusammen, die Brennkammer 29 ist somit zentral im Abscheideraum 35 angeordnet.The solid particles emerge via the wall step 15b in a separating space 35 which is cylindrical in the same way as the combustion chamber 29 and also has an axis arranged vertically. The axis of the separating space 35 coincides with the combustion chamber axis 28 in the exemplary embodiment, the combustion chamber 29 is thus arranged centrally in the separating space 35.

Die Brennkammer 29 weist im Ausführungsbeispiel einen von ihrem Zentrum zum Mantel 33 hin kegelförmig abfallenden Kammerboden 36 auf. Zur Entnahme von mitgeführten Feststoffpartikeln, die sich am Kammerboden der Brennkammer sammeln, sind auch im Boden Durchtrittsöffnungen für die Feststoffpartikeln vorgesehen. Die Durchtrittsöffnungen sind in Figur 5 nicht dargestellt.In the exemplary embodiment, the combustion chamber 29 has a chamber base 36 that slopes conically from its center toward the jacket 33. To remove entrained solid particles that collect on the chamber bottom of the combustion chamber, passage openings for the solid particles are also provided in the bottom. The passage openings are not shown in FIG. 5.

Das Abgas strömt aus der Brennkammer 29 zentral ab. In Figur 5 sind schematisch für den Abgasstrom Strömungspfeile 37 eingezeichnet. Das heiße Abgas wird innerhalb einer Abgasleitung 38 abgeführt, im Ausführungsbeispiel ist die Abgasleitung mit einem in Figur 5 nicht wiedergegebenen Wärmetauscher verbunden, über den das heiße Abgas seine Wärme an ein Heizmedium abgibt.The exhaust gas flows out of the combustion chamber 29 centrally. Flow arrows 37 are shown schematically in FIG. 5 for the exhaust gas flow. The hot exhaust gas is discharged within an exhaust gas line 38; in the exemplary embodiment, the exhaust gas line is connected to a heat exchanger (not shown in FIG. 5), via which the hot exhaust gas releases its heat to a heating medium.

Die Abgasleitung 38 ist zum Abscheideraum 35 hin geöffnet. Das in den Abscheideraum 35 beim Abzug der Feststoffpartikeln aus der Brennkammer 29 eindringende Gas kann somit gemeinsam mit dem Abgas ebenfalls unmittelbar über die Abgasleitung 38 abziehen. Am Abscheideraum 35 ist zusätzlich eine Rauchgasrückführung 39 angeschlossen, deren Zugang mittels einer Stellklappe 40 geöffnet werden kann. Die jeweils über die Rauchgasrückführung zurückgeführte Gasmenge wird durch entsprechendes Einstellen der Öffnungsweite der Stellklappe 40 geregelt.The exhaust line 38 is open to the separation space 35. The gas entering the separation chamber 35 when the solid particles are removed from the combustion chamber 29 can thus also be drawn off together with the exhaust gas directly via the exhaust line 38. A flue gas recirculation 39 is also connected to the separating space 35, the access of which can be opened by means of an adjusting flap 40. The amount of gas returned through the flue gas recirculation is regulated by adjusting the opening width of the control flap 40 accordingly.

Im unteren Bereich des Abscheideraums 35 befindet sich zum Abzug der abgeschiedenen Feststoffpartikeln ein trichterförmiger Partikelaustrag 41. Im Ausführungsbeispiel ist zur Entleerung des Abscheideraums eine Feststoffschleuse 42 vorgesehen, die zum Austrag je nach Feststoffanfall geöffnet wird.In the lower area of the separating space 35 there is a funnel-shaped particle discharge 41 for removing the separated solid particles. In the exemplary embodiment, a solid lock 42 is provided for emptying the separating space, which is opened for discharge depending on the amount of solid.

Die zentrale Lage der Brennkammer 29 innerhalb des Abscheideraums 35 und die freie Strömungsumlenkung des Abgases im Deckenbereich des Abscheideraums (siehe Strömungspfeile 37) dienen einer weitgehenden Reinigung des aus der Brennkammer abziehenden heißen Abgases vor Eintritt in den Wärmetauscher. Vom Brenngas/Luft-Gemisch in die Brennkammer eingeführte Feststoffpartikeln werden im Abscheideraum den gewünschten Anforderungen entsprechend abgeschieden. Ein Zusetzen des Wärmetauschers mit Staub ist somit beim Zyklonbrenner gemäß der Erfindung in ausreichendem Maße verhindert.The central position of the combustion chamber 29 within the separating space 35 and the free flow deflection of the exhaust gas in the ceiling area of the separating space (see flow arrows 37) serve to largely clean the hot exhaust gas withdrawing from the combustion chamber before entering the heat exchanger. Solid particles introduced into the combustion chamber by the fuel gas / air mixture are separated in the separation room according to the desired requirements. A clogging of the heat exchanger with dust is thus sufficiently prevented in the cyclone burner according to the invention.

In Figur 6 ist eine weitere Brennkammer mit waagerechter Brennkammerachse im Querschnitt dargestellt. Von der in Figuren 1 und 2 gezeigten Brennkammer unterscheidet sich diese Brennkammer im wesentlichen durch einen zweiten Partikelaustrittsschlitz: Neben einem unteren Partikelaustrittsschlitz 43 mit Wandstufe 44, die zum Innenraum 45 hin gerichtet in die Brennkammer hineinragt, ist im Eintrittsbereich von Brenngas und Verbrennungsluft ein weiterer Partikelaustrittsschlitz 46 mit Wandstufe 47 angeordnet. Die Wandstufe 47 weist in gleicher Weise wie die Wandstufe 44 eine sich zum Innenraum 45 von dessen Wandseite 48 abhebende Höhe 19 auf. Im Ausführungsbeispiel nach Figur 6 werden die mit den Brenngasen in die Brennkammer eintretenden Partikel somit an zwei Stellen aus der Brennkammer ausgeschleust, wobei die grobere Partikelfraktion im wesentlichen über den Partikelaustrittsschlitz 46, die feinere Fraktion über den Partikelaustrittsschlitz 43 abgeführt wird. In Abänderung des Ausführungsbeispiels nach Figur 6 können die Höhen 19 der Wandstufen 44 und 47 entsprechend dem gewünschten Abscheidegrad in der Brennkammer auch unterschiedlich bemessen und gestaltbar sein.FIG. 6 shows a further combustion chamber with a horizontal combustion chamber axis in cross section. This combustion chamber differs from the combustion chamber shown in FIGS. 1 and 2 essentially by a second particle outlet slot: in addition to a lower particle outlet slot 43 with wall step 44, which projects into the combustion chamber towards the interior 45, there is another particle outlet slot in the inlet area of the combustion gas and combustion air 46 arranged with wall step 47. In the same way as the wall step 44, the wall step 47 has a height 19 which lifts off from the wall side 48 of the interior 45. In the exemplary embodiment according to FIG. 6, the particles entering the combustion chamber with the fuel gases are thus discharged from the combustion chamber at two points, the coarse particle fraction being discharged essentially via the particle outlet slot 46 and the finer fraction via the particle outlet slot 43. In a modification of the exemplary embodiment according to FIG. 6, the heights 19 of the wall steps 44 and 47 can also be dimensioned and designed differently in accordance with the desired degree of separation in the combustion chamber.

Im Ausführungsbeispiel nach Figur 6 treten Verbrennungsluft und Brenngas an der Gaszufuhr 3 noch getrennt in die Brennkammer ein, die Verbrennungsluft über einen an der Gaszufuhr 3 mündenden Luftkanal 49, das Brenngas über einen Brenngaseintrittskanal 50.In the exemplary embodiment according to FIG. 6, combustion air and fuel gas at the gas supply 3 still enter the combustion chamber separately, the combustion air via an air duct 49 opening at the gas supply 3, and the fuel gas via a fuel gas inlet duct 50.

Abweichend hiervon ist es selbstverständlich auch möglich, Brenngas und Verbrennungsluft unmittelbar vor Eintritt in die Brennkammer miteinander zu vermischen, um den Ausbrand zu verbessern.In deviation from this, it is of course also possible to mix the fuel gas and combustion air with one another immediately before entering the combustion chamber in order to improve the burnout.

Die Brennkammer nach Figur 6 funktioniert im übrigen in gleicher Weise wie die in Figur 1 und 2 wiedergegebene Brennkammer. Gleich ausgebildete und funktionell beibehaltene Vorrichtungsteile sind in Figur 6 daher auch mit gleichen Bezugszeichen wie in den vorgenannten Figuren markiert.The combustion chamber according to FIG. 6 functions in the same way as the combustion chamber shown in FIGS. 1 and 2. Identically designed and functionally retained device parts are therefore marked in FIG. 6 with the same reference numerals as in the aforementioned figures.

Claims (10)

  1. Cyclonic burner with cylindrical combustion chamber (1, 29) and with a gas supply (3), opening tangentially into the combustion chamber, for a fuelgas/air mixture burnable in the combustion chamber, with an exhaust-gas conduit (9, 38) which is connected to one of the end faces (10) of the combustion chamber, and at least one slit-shaped outlet (13, 34), opening on the cylindrical casing of the combustion chamber and leading into a separation space (14, 35), for solid particles carried along by the fuel gas, and with a wall step (15, 15a, 15b), provided at the outlet slit and projecting towards the interior of the combustion chamber, for introducing the solid particles into the outlet slit, characterized in that the wall step (15, 15a, 15b) is formed by a limiting face (17) of the outlet slit (13, 34) and, with its wall-step height (19) predetermined by the solid-particle fraction to be discharged from the combustion chamber (1, 29), determines the opening width of the outlet slit (13, 34).
  2. Cyclonic burner according to Claim 1, characterized in that the wall step (15a, 15b) is adjustable.
  3. Cyclonic burner according to one of Claims 1 and 2, characterized in that the outlet slit (13) in the cylindrical casing (8) extends over the entire width (B) of the latter.
  4. Cyclonic burner according to one of Claims 1 to 3, characterized in that the outlet slit (13) has a flow cross-section (16) widening outwards from the interior of the combustion chamber (1).
  5. Cyclonic burner according to one of Claims 1 to 4, characterized in that, in order to divert exhaust gas out of the separation space (14), starting from the separation space a bypass (25) is guided to the exhaust-gas conduit (9).
  6. Cyclonic burner according to Claim 5, characterized in that an adjustable throttle flap (26) is arranged in the bypass (25).
  7. Cyclonic burner according to one of the preceding claims, characterized in that the gas supply (3) has an adjustable gas-inlet cross-section in the region (23) opening into the combustion chamber (1).
  8. Cyclonic burner according to Claim 7, characterized in that in order to adjust the gas-inlet cross-section, a regulating flap (24) is mounted and is adjustable in dependence on the inflowing fuel-gas quantity and/or on the inflow velocity of the fuel gas.
  9. Cyclonic burner according to one of the preceding patent claims, characterized in that an outlet slit (46) with a wall step (47) is arranged in the inlet region for the fuel gas in the combustion chamber (45).
  10. Cyclonic burner according to one of the preceding patent claims, characterized in that a flow-guide wall (48) for the gas mixture is provided at the inlet for the fuel gas into the combustion chamber (45).
EP91109846A 1990-07-02 1991-06-15 Cyclonic burner with cylindrical combustion chamber Expired - Lifetime EP0464436B1 (en)

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DE4021005 1990-07-02
DE4021005A DE4021005C1 (en) 1990-07-02 1990-07-02

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AT (1) ATE126341T1 (en)
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DE102011111521A1 (en) 2011-08-31 2013-02-28 Robert Bosch Gmbh Secondary combustion chamber for biomass combustor for combustion of biomass e.g. pellets, has inlet channels for combustion gas and secondary air in different flowing directions and arranged at funnel inlet
DE102011116723A1 (en) 2011-10-24 2013-04-25 Robert Bosch Gmbh Secondary combustion chamber with secondary air injection
CN107270288B (en) * 2017-08-07 2023-03-14 段秀春 Common-mode synchronous industrial flue gas after-combustion circulating treatment module, device and method
CN110440289B (en) * 2019-07-26 2021-01-08 中国航发沈阳发动机研究所 High-efficient mixing arrangement of gas turbine combustion chamber fuel air

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DE974562C (en) * 1941-04-17 1961-02-09 Aeg Firing for liquid, gaseous or dusty fuels
FR1076716A (en) * 1952-05-06 1954-10-28 Babcock & Wilcox France Improvements to cyclone outbreaks
DE1024663B (en) * 1954-09-08 1958-02-20 Heriberto Enrique Guillermo Ju Cyclone burner
GB804570A (en) * 1956-02-20 1958-11-19 Babcock & Wilcox Ltd Improvements in cyclone furnaces
US3179074A (en) * 1962-02-21 1965-04-20 Babcock & Wilcox Co Cyclone furnace
US3357383A (en) * 1965-08-05 1967-12-12 Golovanov Nikolai Vasilievich Horizontal cylindrical furnace with removal of liquid slag
DE3507371A1 (en) * 1985-03-02 1986-09-04 Norddeutsche Affinerie AG, 2000 Hamburg DEVICE FOR THE PYROMETALLURGICAL TREATMENT OF FINE-GRINED, MELT-LIQUID PRODUCTS OF RESULTING SOLIDS
DE3643040C1 (en) * 1986-12-17 1988-02-25 Gewerk Sophia Jakoba Device for burning coal dust

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ATE126341T1 (en) 1995-08-15
EP0464436A3 (en) 1992-03-25
HU907092D0 (en) 1991-05-28
DE4021005C1 (en) 1991-08-14
EP0464436A2 (en) 1992-01-08
BR9102645A (en) 1992-01-21
HU211408B (en) 1995-11-28
HUT59473A (en) 1992-05-28

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