EP4220010A1 - Anneau de distribution de combustible dans un brûleur, brûleur comprenant un tel anneau de distribution et tambour de séchage comprenant un tel brûleur - Google Patents

Anneau de distribution de combustible dans un brûleur, brûleur comprenant un tel anneau de distribution et tambour de séchage comprenant un tel brûleur Download PDF

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Publication number
EP4220010A1
EP4220010A1 EP22205352.2A EP22205352A EP4220010A1 EP 4220010 A1 EP4220010 A1 EP 4220010A1 EP 22205352 A EP22205352 A EP 22205352A EP 4220010 A1 EP4220010 A1 EP 4220010A1
Authority
EP
European Patent Office
Prior art keywords
distribution ring
burner
fuel
longitudinal axis
hollow body
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP22205352.2A
Other languages
German (de)
English (en)
Inventor
Steven Mac Nelly
Dietmar Zimmer
Torsten Martini
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Benninghoven Zweigniederlassung Der Wirtgen Mineral Technologies GmbH
Original Assignee
Benninghoven Zweigniederlassung Der Wirtgen Mineral Technologies GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Benninghoven Zweigniederlassung Der Wirtgen Mineral Technologies GmbH filed Critical Benninghoven Zweigniederlassung Der Wirtgen Mineral Technologies GmbH
Publication of EP4220010A1 publication Critical patent/EP4220010A1/fr
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D1/00—Burners for combustion of pulverulent fuel
    • F23D1/02—Vortex burners, e.g. for cyclone-type combustion apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D1/00—Burners for combustion of pulverulent fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K3/00—Feeding or distributing of lump or pulverulent fuel to combustion apparatus
    • F23K3/02—Pneumatic feeding arrangements, i.e. by air blast
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B9/00—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards
    • F26B9/06—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in stationary drums or chambers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2201/00—Burners adapted for particulate solid or pulverulent fuels
    • F23D2201/10—Nozzle tips
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
    • F23D2900/01001—Pulverised solid fuel burner with means for swirling the fuel-air mixture
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
    • F23D2900/21—Burners specially adapted for a particular use
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K2203/00—Feeding arrangements
    • F23K2203/008—Feeding devices for pulverulent fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B23/00—Heating arrangements
    • F26B23/02—Heating arrangements using combustion heating

Definitions

  • the invention relates to a distribution ring for fuel in a burner, a burner with such a distribution ring and a drying drum with such a burner.
  • Burners for burning solids in particular pulverized lignite
  • the pulverized lignite is distributed with a so-called distribution ring and fed to the burner flame by means of fuel nozzles.
  • the fuel nozzles can become blocked by the lignite dust, as a result of which the burner flame in particular, in particular the so-called flame image of the burner flame, is adversely affected.
  • the flame length is reduced.
  • the formation of the flame geometry is in particular asymmetrical. This results in combustion that is in particular incomplete, asymmetrical, uneven and inefficient.
  • the object of the invention is to improve fuel combustion in a burner, in particular by means of reliable and uniform fuel supply.
  • the object is achieved by a distribution ring for fuel having the features of claim 1, by a burner having the features of claim 10 and by a drying drum having the features of claim 11.
  • a distribution ring for fuel in a burner has a hollow body which is annular in relation to a longitudinal axis and has a plurality of discharge nozzles connected thereto, with the discharge nozzles each being arranged on the outside of the hollow body in the radial direction relative to the longitudinal axis.
  • this avoids a build-up of material in the distribution ring, in particular in the hollow body.
  • particles of the fuel which are fed into the distribution ring by means of compressed air, are displaced radially outwards, in particular in the direction of the radially outer side wall of the hollow body, due to the centrifugal forces of the fluid flow in the distribution ring.
  • discharge nozzles are each arranged on the outside in the radial direction, ie at a maximum radial distance relative to the longitudinal axis, on the hollow body ensures that the fuel particles are automatically discharged from the hollow body via the discharge nozzles. Fuel distribution is straightforward and failsafe.
  • the flame pattern thus generated is homogeneous and, in particular, symmetrical with respect to the longitudinal axis.
  • the distribution ring according to the invention ensures efficient and in particular complete combustion, in particular residue-free.
  • a feed nozzle connected to the hollow body is used to feed the fuel into the hollow body.
  • the feed connector enables the fuel to be fed in a defined manner, in particular in a tangential direction into the annular hollow body.
  • the fuel is in particular a solid, in particular lignite, hard coal, sewage sludge and/or biomass such as, for example, organic fibers, in particular wood fibers, in particular wood dust and/or leftover food.
  • the distribution ring has at least three, in particular at least four, in particular at least six, in particular at least eight, in particular at least ten, in particular at least twelve, in particular at least sixteen, in particular at least twenty and in particular at least twenty-four delivery nozzles.
  • a maximum of one hundred delivery nozzles are arranged on the distribution ring. It is advantageous if there is an even number of delivery nozzles. In this case, a symmetrical arrangement of the delivery nozzles along the hollow body is possible, in particular such that the delivery nozzles are arranged in pairs diametrically opposite one another with respect to the longitudinal axis on the distribution ring. The number of discharge nozzles can also be odd.
  • a distribution ring according to claim 2 has increased reliability when the fuel particles are released automatically.
  • a polygonal inner contour of the hollow body ensures advantageous particle guidance and particle delivery via the delivery nozzles.
  • the polygonal inner contour is in particular quadrangular, in particular rectangular or trapezoidal or in the form of a parallelogram.
  • the polygonal inner contour can also be an irregular polygon, in particular an irregular square. It is particularly advantageous if an outer edge of the inner contour oriented in the radial direction is oriented at least in sections parallel to the longitudinal axis. This ensures that, in relation to the radial direction with respect to the longitudinal axis, the fuel particles are not undesirably pushed further radially outwards, which would hinder the automatic release of the fuel particles.
  • At least one edge of the inner contour is curved at least in sections. It is advantageous if the curvature is concave in relation to the interior space surrounded by the hollow body.
  • a distribution ring according to claim 3 enables an improved, in particular more uniform delivery of the fuel into the burner flame.
  • a circumferential angle between two adjacent discharge nozzles is identical, in particular for all discharge nozzles.
  • a distribution ring according to claim 4 improves the directional delivery of the fuel into the burner flame.
  • the discharge nozzles are directed with their respective longitudinal axis toward the center, ie inclined toward the longitudinal axis.
  • the relevant angle of inclination is greater than 0° and less than 90°. It is advantageous if the longitudinal axis of the socket and the longitudinal axis of the hollow body are arranged in a common plane.
  • a distribution ring according to claim 5 enables improved homogeneity of the flame formation.
  • a distribution ring according to claim 6 enables an uncomplicated construction.
  • the distribution ring can be made essentially in one piece with the delivery nozzle.
  • a nozzle attachment is detachably mounted, in particular screwed, on each discharge nozzle.
  • the respective nozzle attachment enables improved delivery of the fuel particles.
  • the respective nozzle attachment can have a complex geometry. Because the nozzle attachment is produced separately and in particular independently of the hollow body, the nozzle attachment can be produced flexibly.
  • a distribution ring according to claim 7 enables the fuel particles to be conveyed in a targeted manner in the axial direction, in particular towards the discharge nozzle.
  • a distribution ring according to claim 9 enables, in particular continuous, axial transport of the fuel particles.
  • a burner according to claim 10 essentially has the advantages of the distribution ring, to which reference is hereby made.
  • the distribution ring is connected to the feed connection to a primary fuel feed (in short: fuel feed).
  • the fuel supply comprises in particular a fuel source and/or a supply line.
  • the fuel can be supplied by means of pneumatic conveying.
  • a drying drum according to claim 11 essentially has the advantages of the burner, to which reference is hereby made.
  • an end wall of the drying drum is designed in such a way that a collision is avoided between the end wall, the burner head and the fuel feed.
  • the end wall of the drying drum has an opening for the burner head and for the fuel feed, which opening is in particular larger than the outer dimensions of the burner head and fuel feed.
  • a single opening is arranged in the front wall, in which the burner head and the fuel supply are arranged.
  • the opening is in particular essentially keyhole-shaped.
  • the device marked as a whole with 1 comprises a drying drum 3 which can be driven in rotation about an axis of rotation 2 for drying and/or heating material, in particular material for asphalt production, in particular rock material, old asphalt granules and/or aggregates.
  • the drying drum 3 is designed essentially as a hollow cylinder.
  • the axis of rotation 2 is arranged relative to the horizontal at an angle of inclination h of the axis of rotation, which is in particular greater than 0° and in particular less than 10°, in particular less than 5° and in particular less than 3°.
  • the material to be dried is conveyed in the drying drum 3 along a material conveying direction 4 according to FIG 1 is oriented from left to right.
  • a material outlet 6 at a 1 End wall 5 of the drying drum 3 shown on the right is arranged a material outlet 6, by means of which the dried material is discharged from the drying drum 3.
  • the material outlet 6 can be arranged at different positions in the circumferential direction around the axis of rotation 2 . It is also possible to arrange the material outlet 6 at several different locations.
  • a material inlet is arranged to feed the material to be dried to the drying drum 3 .
  • a burner 7 is arranged on the end wall 5 and, in particular, is fastened to the end wall 5 and, in particular, is integrated into the end wall 5 .
  • the end wall 5 has an opening through which the burner 7 is guided and protrudes at least partially into an interior space surrounded by the drying drum 3 .
  • the burner 7 has a burner housing 9 which has a burner longitudinal axis 8 and which can be arranged in particular parallel and in particular concentrically to the axis of rotation 2 on the end wall 5 of the drying drum 3 .
  • the burner housing 9 is designed essentially as a hollow cylinder and has an air supply 10 and a secondary fuel supply 11 for secondary fuel and/or for auxiliary fuel.
  • the secondary fuel supply 11 comprises a secondary fuel source, in particular a secondary fuel storage tank 12 which is connected to the burner 7 by means of a secondary fuel supply line 13 .
  • a primary fuel supply is connected to the burner 7, which has a primary fuel source 12a and a primary fuel supply line 13a connected thereto.
  • the primary fuel source will be referred to as fuel source 12a and the primary fuel supply line as fuel supply line 13a in the following.
  • a distribution ring 14 for the distributed supply of the fuel in the burner 7 is arranged.
  • the distribution ring 14 is connected to the fuel supply line 13a leading to the fuel source 12a.
  • the distribution ring 14 is in particular arranged concentrically to the longitudinal axis 8 of the burner.
  • another secondary fuel supply is connected to the burner 7, which, like the secondary fuel supply 11, serves to supply secondary fuel and/or auxiliary fuel.
  • the further secondary fuel supply includes a further secondary fuel storage tank 12b, which is connected to the burner 7 by means of a further secondary fuel supply line 13b.
  • the burner 7 also has a pilot burner 37, which in 1 is shown purely schematically.
  • the pilot burner 37 is arranged within the burner housing 9 .
  • the pilot burner 37 can be arranged in a variable manner, in particular within the burner housing 9, in particular steplessly or by means of a fastening device that specifies a plurality of discrete fastening positions.
  • the variable arrangement of the pilot burner 37 is in particular related to a direction parallel and/or radially and/or in the circumferential direction to the burner longitudinal axis 8 .
  • the pilot burner 37 serves to ignite a burner flame.
  • drying drum 3 is operated in the countercurrent process. It goes without saying that an embodiment of the drying drum 3 is possible in which the material conveying direction 4 and the heat supply direction 15 are oriented in the same direction, ie the drying drum 3 is operated in the co-current process. Such a drying drum is referred to as a parallel drum.
  • a turbulence element 16 is arranged concentrically to the longitudinal axis 8 of the burner.
  • the turbulence element 16 serves to turbulence of the air supplied by means of the air supply 10, in particular the ambient air 10a drawn in, in particular in the tangential direction in relation to the longitudinal axis 8 of the burner.
  • the turbulence element 16 can be designed as a baffle plate and in particular have a guide wheel.
  • the swirling element 16 is designed in particular in such a way that the ambient air 10a that is drawn in is mixed with the supplied fuel, in particular solid fuel, and/or possible secondary fuel and/or auxiliary fuel, in such a way that the ignition properties and/or combustion properties of the mixture are improved and, in particular, optimized.
  • the Ignition properties and/or combustion properties are improved when the mixture has a high degree of homogeneity.
  • the mixture has a high level of homogeneity in particular when the fuel in the mixture burns evenly and, in particular, completely. Complete combustion can therefore be controlled in particular by the fact that the exhaust gas flow leaving the drying drum 3 no longer contains any fuel components.
  • it may be necessary for the drying drum 3 to be operated at different operating points, it being possible for the different operating points to be approached in a targeted manner by means of a system control.
  • the end wall 5 has an opening 38 which is designed essentially in the shape of a keyhole.
  • the opening 38 has an upper circular section in which the burner head 17 is arranged.
  • An inner diameter of the circular section is larger than an outer diameter of the burner head 17 so that a circumferential annular gap 39 results between the opening 38 and the burner head 17 .
  • the burner head 17 and the opening 38 are in particular arranged concentrically to one another and in particular are each oriented concentrically with respect to the axis of rotation 2 .
  • the circular section of the opening 38 transitions into a U-shaped configuration.
  • the fuel supply line 13a is guided into the drying drum 3 through the U-shaped formation.
  • the U-shaped formation is designed with a circumferential gap with respect to the fuel supply line 13a. Accordingly, along the results Inner contour of the opening 38 circumferential annular gap 39, in particular also along the U-shaped formation.
  • the distribution ring 14 is arranged on a burner head 17 and is integrated therein at least in sections.
  • the burner head 17 is sleeve-shaped and has two cylinder sections 18, 19 arranged one behind the other along the longitudinal axis 8 of the burner, which are connected to one another by means of a cone section 20.
  • the burner head 17 is arranged in the burner 7 in such a way that the first cylinder section 18 faces the air supply 10 and the second cylinder section 19 faces the drying drum 3 .
  • the first cylinder section 18 has a first inside diameter D i,1 .
  • the second cylinder section 19 has a second inner diameter D i,2 which is larger than the first inner diameter D i,1 .
  • the distribution ring 14 is used for the distributed supply of the fuel, i.e. fuel particles, in particular solid particles, into the burner 7, in particular into the burner head 17 and in particular into the second cylinder section 19.
  • the fuel i.e. fuel particles, in particular solid particles
  • the distribution ring 14 has a hollow body 21 which is annular with respect to a longitudinal axis 22 of the distribution ring 14 .
  • the distribution ring 14 is concentric to the burner head 17 and thus concentric in Burner 7 arranged. This means that the longitudinal axis 22 and the burner longitudinal axis 8 coincide.
  • a feed pipe 23 is connected to the hollow body 21 .
  • the feed connector 23 is integrally formed on the hollow body 21 .
  • the feed socket 23 is in particular directly connected to the fuel feed line 13 and in particular connected to it.
  • the feed connector 23 is arranged eccentrically to the longitudinal axis 22 .
  • the feed connector 23 extends away from the hollow body 21 along a radial direction relative to the longitudinal axis 22.
  • the feed connector 23 has a curvature.
  • a fluid flow fed to the hollow body 21, in particular a mixture of fuel particles and air is deflected.
  • the fuel-air mixture first flows in the feed connection 23 along the radial direction R and is then deflected in the tangential direction T as a result of the curvature towards the outlet point 24 and fed into the hollow body 21 .
  • the hollow body 21 specifies an essentially circular flow direction for the fuel particles around the longitudinal axis 22 .
  • the hollow body 21 has a plurality of delivery nozzles 25 via which the fuel is delivered to the burner 7 and in particular to the burner head 17 .
  • the hollow body 21 has sixteen discharge nozzles 25 which are arranged on the distribution ring 14 in a circumferential direction about the longitudinal axis 22 and are spaced evenly apart from one another. It goes without saying that more or fewer than sixteen discharge nozzles 25 are present and/or at different distances in Circumferential direction can be arranged to each other.
  • the delivery nozzles 25 are all arranged on a common circular line around the longitudinal axis 22, that is to say with an identical radial spacing with respect to the longitudinal axis 22 in each case. It is also possible for individual dispensing nozzles 25 to be arranged at different radial distances from the longitudinal axis 22 .
  • all delivery nozzles 25 are identical. It is also possible for some or all of the discharge nozzles 25 to be designed differently, in particular with regard to their geometry.
  • the discharge nozzles 25 are each arranged on the outside of the hollow body 21 in the radial direction relative to the longitudinal axis 22 . This radially outer arrangement results in particular from the illustrations in 3 and 5 .
  • the hollow body 21 has a polygonal inner contour.
  • the inner contour is square.
  • the inner contour has an outer edge 26 on the outside in relation to the radial direction of the longitudinal axis 22 and an inner inner edge 27 which are connected to one another via two axial edges 28 and 29 spaced apart from one another in the axial direction.
  • the second axial edge 29 which is arranged in the area of the cone section 20 and is defined in particular by the second cone section 20 , is arranged inclined relative to a normal plane of the longitudinal axis 22 .
  • the first axial edge 28, which is arranged in particular in the area of the first cylinder section 18, is oriented in particular parallel to a normal plane of the longitudinal axis 22.
  • the discharge nozzle 25 is connected directly to the hollow body 21 via a through-opening 30 in the cone section 20 .
  • the through opening 30 is arranged on the hollow body 21 in such a way that it is arranged on the outside in the radial direction.
  • the discharge nozzles 25 are each hollow-cylindrical and have a nozzle longitudinal axis 31 which are each arranged inclined at an angle of inclination n relative to the longitudinal axis 22 .
  • the angle of inclination n is approximately 40°. It goes without saying that the angle of inclination n can vary, in particular as a function of the position of the respective discharge nozzle 25 and in particular as a function of the number of discharge nozzles 25 . Additionally or alternatively, the angle of inclination n can also vary as a function of the fuel used, in particular the solid fuel used, and in particular as a function of a combination of different fuels. It is particularly advantageous if the angle of inclination n is identical for each delivery nozzle 25 and the longitudinal axes 31 of the nozzles intersect at a point P, which lies on the longitudinal axis 22 .
  • a longitudinal axis 31 of the connecting piece is arranged in a common radial plane with the longitudinal axis 22 . If, as in the embodiment shown, an even number of delivery nozzles 25 is provided and two delivery nozzles 25 are arranged diametrically opposite each other with respect to the longitudinal axis 22, the nozzle longitudinal axes 31 of opposite delivery nozzle 25 arranged together with the longitudinal axis 22 in a common radial plane.
  • a nozzle attachment 32 is arranged on each discharge nozzle 25 and in particular placed on the discharge nozzle 25 in each case.
  • the nozzle attachment 32 enables a targeted and directed supply of fuel.
  • the nozzle attachment 32 has a slip-on section, the inner contour of which corresponds to an outer contour of the dispensing nozzle 25 .
  • the slip-on section is designed with an axial shoulder, which serves as an axial stop along the longitudinal axis 31 of the socket.
  • the nozzle attachment 32 has a transverse bore into which a retaining screw 33 is screwed and is used to clamp the nozzle attachment 32 to the discharge nozzle 25 .
  • the nozzle attachment 32 is optional and can also be omitted, in particular depending on the properties of the fuel used.
  • the nozzle attachment 32 is guided through a corresponding opening in a cone diaphragm 34 in the burner head 17 .
  • An annular air gap 32a is formed between the outside of the nozzle cap 32 and the orifice. Air, in particular ambient air 10a drawn in, can flow through the air gap 32a from the annular space between the cone section 20 and the cone diaphragm 34 to the burner flame. It is advantageous if the air gap 32a is designed depending on the geometry of the nozzle attachment 32 and/or the opening in the cone diaphragm 34 such that the flame geometry is undisturbed by the air flowing in through the air gap 32a.
  • the cone diaphragm 34 is essentially parallel to the cone section 20 of the burner head 17 oriented. The opening in the cone diaphragm 34 is designed in particular in such a way that the retaining screw 33 can be accessed from the interior of the burner head 17 .
  • the nozzle attachment 32 serves in particular to guide the fuel, in particular the solid fuel, through the cone diaphragm 34 . If no nozzle attachment 32 is arranged on the discharge nozzle 25, the resulting air gap 32a is designed in such a way that the flame geometry is not permanently disturbed by the inflowing air, in particular ambient air 10a that is sucked in.
  • the distribution ring 14 has an axial extent that is oriented parallel to the longitudinal axis 22 .
  • the axial extension is defined by the distance between the axial edges 28, 29. If, as in the present exemplary embodiment, the axial edges 28, 29 are oriented at different angles of inclination to one another, the axial extent results as the mean value between a maximum axial extent and a minimum axial extent. In the exemplary embodiment shown, the maximum axial extent is given at the outer edge 26 and the minimum axial extent is given at the inner edge 27 .
  • the axial extension is at its maximum at the opening point 24 and decreases in the conveying direction of the fuel, ie from the feed connection piece 23, in particular in the circumferential direction around the longitudinal axis 22, towards the discharge connection piece 25.
  • the axial extent decreases continuously along the conveying direction and in particular linearly. This ensures that the fuel is automatically conveyed in the axial direction, ie towards the delivery nozzle 25 .
  • the Delivery of the fuel from the hollow body 21 via the delivery nozzle 25 is thus evenly distributed and thus improved.
  • the axial extension a which reduces in the circumferential direction, results in particular from the plan view of the burner head 17 in 6 .
  • a first in 6 The axial extension a 1 marked below is greater than one in 6 second axial extension a 2 marked above.
  • the reason for this is that the rear side wall 36, which defines the first axial edge 28, is inclined with respect to a normal plane of the longitudinal axis 22. The greater the inclination of the side wall 36 relative to the normal plane, the greater the axial transport of the fuel particles.
  • the rear sidewall 36 is helically shaped.
  • the burner 7 In order to supply heat to the drying drum 3, the burner 7 is operated.
  • ambient air 10a in particular drawn in, is fed to the burner 7 via the air feed 10
  • fuel in particular solid fuel particles, is fed via the primary fuel feed 12a, 13a.
  • further fuel in particular secondary fuel and/or supplementary fuel, can be supplied from the at least one secondary fuel source 12, 12b via the at least one secondary fuel supply 13, 13b.
  • the pilot burner 37 may first ignite a supporting flame that is produced from a secondary fuel before the solid fuel, ie the primary fuel, is ignited. To ignite the support flame, the secondary fuel flows into the burner 7 via the secondary fuel supply lines 13, 13b.
  • the fuel particles are supplied via the distribution ring 14 starting from the fuel source 12a via the fuel supply line 13a, which is connected to the supply socket 23. From there, the fuel particle-air mixture is diverted from a radial flow R into a tangential flow T and fed into the hollow body 21 .
  • the corresponding flow arrows 35 are in 4 shown.
  • the fuel particles flow essentially in the circumferential direction around the longitudinal axis 22.
  • This circumferential flow is overlaid by an axial flow component, that is to say a flow direction along the longitudinal axis 22 towards the discharge nozzle 25 .
  • This axial flow component is caused by the continuously reducing axial extent of the hollow body 21 .
  • the fuel particles are moved to the outer edge 26 in the hollow body 21 . Due to the fact that the discharge nozzles 25 are arranged in the area of the outer edge 26 of the hollow body 21, the fuel particles can be discharged, in particular automatically and in particular without residue, from the hollow body 21 via the discharge nozzles 25 into the burner head 17 towards the burner flame. Blockages or blockages of the delivery nozzle 25 are avoided.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Drying Of Solid Materials (AREA)
EP22205352.2A 2022-01-20 2022-11-03 Anneau de distribution de combustible dans un brûleur, brûleur comprenant un tel anneau de distribution et tambour de séchage comprenant un tel brûleur Pending EP4220010A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102022200625.9A DE102022200625A1 (de) 2022-01-20 2022-01-20 Verteilring für Brennstoff in einem Brenner, Brenner mit derartigem Verteilring und Trockentrommel mit derartigem Brenner

Publications (1)

Publication Number Publication Date
EP4220010A1 true EP4220010A1 (fr) 2023-08-02

Family

ID=84245803

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22205352.2A Pending EP4220010A1 (fr) 2022-01-20 2022-11-03 Anneau de distribution de combustible dans un brûleur, brûleur comprenant un tel anneau de distribution et tambour de séchage comprenant un tel brûleur

Country Status (4)

Country Link
US (1) US20230228413A1 (fr)
EP (1) EP4220010A1 (fr)
AU (1) AU2023200222A1 (fr)
DE (1) DE102022200625A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR612480A (fr) * 1926-03-08 1926-10-25 Brûleur à huile et à charbon pulvérisé
GB2085575A (en) * 1980-08-22 1982-04-28 Hamworthy Engineering Multi-fuel Burner
US20080280242A1 (en) * 2006-07-21 2008-11-13 Swanson Malcolm L Coal burner assembly

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080280243A1 (en) 2003-10-02 2008-11-13 Malcolm Swanson Burner assembly

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR612480A (fr) * 1926-03-08 1926-10-25 Brûleur à huile et à charbon pulvérisé
GB2085575A (en) * 1980-08-22 1982-04-28 Hamworthy Engineering Multi-fuel Burner
US20080280242A1 (en) * 2006-07-21 2008-11-13 Swanson Malcolm L Coal burner assembly

Also Published As

Publication number Publication date
US20230228413A1 (en) 2023-07-20
DE102022200625A1 (de) 2023-07-20
AU2023200222A1 (en) 2023-08-03

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