WO2015140084A1 - Device for thermal afterburning of exhaust air - Google Patents

Abstract

The invention relates to a device for afterburning of exhaust air by means of a burner (04), having a fuel nozzle (07) and a burner cone (06), wherein at least the burner cone (06) of said burner (04) protrudes in a raw gas chamber (09) into an exhaust stream (02) of exhaust air from an upstream system (12) which is to be treated. The burner cone (06) is surrounded by exhaust air and forms a pre-mixing chamber (42) in the interior, wherein the burner cone (06) has a single or multi-part wall (43) enclosing the pre-mixing chamber (42) and having one or a plurality of wall sections (43.1; 43.2; 43.3; 43.4). The fuel nozzle (07) comprises an opening of at least one fuel outlet (44) for output of fuel into the pre-mixing chamber (42) and is enclosed by the wall of the burner cone (06) at least at the height of the at least one fuel outlet (44). The wall (43) bordering the pre-mixing chamber (42) on the shell side to the outside has a structure such that the pre-mixing chamber (42) formed in the interior thereof opens in a funnel shape to at least one conical longitudinal section, symmetrically to an axis of symmetry (S) defining the axial direction of the burner (04), in the downstream direction, wherein the burner (04), in a bottom (49) of the burner cone (04) on the face which encloses the fuel nozzle (07) and/or the at least one fuel outlet (44), has one or a plurality of openings of one or a plurality of feedthroughs (48) leading into the pre-mixing chamber (42) from the raw gas chamber (09) surrounding the burner (04), through which exhaust air from the raw gas chamber (09) surrounding the burner (04) enters and/or can enter into the pre-mixing chamber having an axial or primarily axial flow direction, that is, a greater axial flow component relative to the radial component.

Description

 description

Device for thermal afterburning of exhaust air

The invention relates to a device for thermal afterburning of exhaust air according to the preamble of claim 1.

By a brochure "CleanAir-Abluftreinigungssysteme" the company. KBA-MetalPrint from 03/2008 is known with the "thermal exhaust air cleaning TNV" a device for thermal post-combustion of exhaust air with a burner whose burner cone opens in the axial direction of the burner to the downstream cone opening in a funnel shape , The burner is arranged with at least the burner cone in a space upstream of a combustion chamber and surrounded by exhaust air to be treated. In the upstream of the burner exhaust gas stream is provided with the clean gas flow heat energy exchanging shell and tube heat exchanger.

DE 37 38 141 A1 discloses a burner whose burner cone engages around a fuel nozzle tube. The cone has in its truncated cone jacket-shaped opening wall portion through openings, through which exhaust gas from a leading the exhaust gas and surrounding the cone channel can flow into the cone interior. In parallel, exhaust gas flows into the combustion chamber through an annular gap formed between the combustion chamber diaphragm and the cone. In order to avoid damage resulting from overheating, the burner cone is made of so-called engineering ceramics, in particular of silicon infiltrated silicon carbide.

DE 196 54 009 A1 discloses a cone burner with a burner cone made up of two conical shell-shaped partial bodies which are offset radially relative to one another at their end sections considered in the circumferential direction and thereby form tangential inlet openings for combustion air. In the area of the cylindrical initial part the cone is atomized via a nozzle preferably liquid fuel into the cone interior. In the area of the tangential inlet openings, gaseous is additionally preferred by radially inwardly pointing openings in the partial body wall

Fuel injected into the tangential incoming combustion air. The evaporation of the liquid fuel injected through the nozzle within the premixing chamber can be assisted by preheating the supplied combustion air or enriching it with recirculated exhaust gas.

DE 41 13 681 A1 and DE 195 45 310 A1 disclose comparable burner designs to DE 196 54 009 A1, wherein the radial injection into the tangential inlet openings in DE 41 13 681 A1, however, via radially directed openings in parallel to the inlet openings extending supply ducts he follows. Again, for gas turbine or atmospheric furnaces return of a portion of the exhaust gas in the fresh air supplied to form the combustion air can be beneficial. In DE 195 45 310 A1, a plurality of cone-shaped part bodies are provided to form the burner cone, in the illustration of an exemplary embodiment. The Teilkegelachsen the Teilkegelschalen lie on a common cone axis, so that a straight interrupted by entry channels

Cone surface line results.

DE 195 45 309 A1 discloses a premix burner to be used, for example, in a gas turbine group with two conical shell-shaped partial bodies, which form slot-like tangential inlet openings between them for the entry of compressed combustion air generated in a compressor. In the area of the tangential entry slots, gaseous fuel is injected. If, at partial load, operation is not ensured solely by injection in the region of the slots, fuel is additionally injected via a nozzle via a lance in the area of the return flow zone, thereby avoiding pulsation between full-load and part-load operation. In a cavity between the lance tube limiting the lance and the coaxial in this arranged raw fuel r flows combustion air to the lance head opening in the region of the return flow zone.

CH 684 962 A5 discloses a burner for operating an internal combustion engine, a combustion chamber of a gas turbine group or a firing installation with a burner cone likewise formed by partial cone bodies, wherein fuel is injected in the region of the tangential inlet slots. If required, in addition to the tangential introduction, axial combustion air may at most be introduced into the conical cavity downstream of the ignition electrodes.

DE 102 05 428 A1 relates to a burner for a heat generator. In the

Outlet of the burner flow obstacles are provided.

WO 2006/048405 A1 also relates to a burner for a heat generator.

On the output side of the burner cone are in the flow path of the exiting

Fuel gas flow transition channels forming internals provided

US Pat. No. 6,599,121 B2 relates to a burner of a turbo-power machine with a plurality of conical part shells, wherein combustion air is provided with fuel in the slots formed therebetween and introduced tangentially into the interior of the cone. In order to stabilize the burner fluidically, a partial cross-sectional taper is provided in the axial course of the cone flow by appropriate shaping or internals in at least one peripheral portion, through which the flow profile is deformed. The cross section tapering peripheral portion extends in a downstream last third of the burner cone by 2 to 45 °, in particular 5 ° to 15 °, inclined to the burner axis.

EP 0 629 817 A2 discloses a firing plant which consists essentially of a combustion chamber with a premix burner. This is due to the combustion The flue gas produced by the fuel is passively returned. The burner cone comprises two tangential inlets formed by displacement of two conical partial bodies for the entry of the combustion air. The burner is fresh air in the foot area axially and in the

Cone area radially fed as a tangential flow, which tears the suction effect of jet injectors flue gas with it into the burner interior. Around

Tangential entries are provided fuel nozzles.

DE 100 22 969 A1 relates to a burner for operating an aggregate for producing a hot gas with a burner cone formed by two fan-shaped part cone bodies. To reduce the amplitudes of thermoacoustic fluctuations, a variety of flow obstacles protrude into the flow. Preferably, the flow obstacles at the burner outlet and particularly advantageously additionally provided along the Tangentialluftoffnungen. In addition, openings for the supply of fuel may be provided in the region of the tangential air openings.

EP 0 780 630 A2 relates to a burner for a heat generator. The burner comprises a conical swirl generator and a fuel nozzle. The burner cone comprises two tangential inlets formed by displacement of two conical partial bodies for the entry of the combustion air. The latter can be enriched with recirculated exhaust gas for preheating. In the area of the fuel nozzle orifice, radially or quasi-radial arranged openings are provided, through which a purge air flows into the cross-section induced by the size of the fuel nozzle.

JP 2004 053 048 A discloses a premix burner, wherein axial bores appear in an end wall delimiting the cone at the foot end, which open on the other side in a pilot mixed gas line. The cone comprises windows through which a main fuel gas mixture flows from the outside into the interior of the cone.

US 2007/0254254 A1 relates to a conical cyclone oxidation burner, which the side of its smaller cross-section of coal-containing gas from a pyrolysis plant is supplied. The interior of the cone-shaped

Burner basket can in the cone wall via hoses fuel z. B. be supplied in the form of propane. Also in the wall of the cone-shaped burner basket rings of openings are provided on the inner sides

Deflector flaps for generating a cyclonic flow. By these measures and possibly an additional blower, by which a circular flow in the combustion chamber surrounding the burner chamber can be generated, should form a cyclonic flame on the inner wall of the burner basket.

DE 198 48 661 A1 relates to a thermal post-combustion plant, wherein a burner is arranged with its cone in the exhaust gas stream. In the cone jacket are

Provided openings through which the exhaust air flows into the interior. To form a swirl flow, the most downstream openings on inwardly projecting Abluftleitelemente.

GB 1 276 199 A also relates to a thermal afterburner system of contaminated exhaust air with a burner cone arranged in the exhaust air flow and comprising radial air openings.

The invention is based on the object, a device for thermal

To create afterburning of exhaust air.

The object is achieved by the features of claim 1.

The achievable with the present invention consist in particular that a post-combustion of exhaust air is possible, which works very effective and energy efficient and yet meets high standards in terms of pollutant levels. For high efficiency contributes, for example, a preheating nachverbrennenden the exhaust air to z. As temperatures> 500 ° C and / or for the mixing of the exhaust air to be cleaned with the fuel gases favorable flow guidance of the exhaust air and / or

Fuel flows at.

Of particular advantage for the execution of a Nachverbrennungsvorrichtung is therefore z. As a preheating of the exhaust air to be cleaned in combination, preferably in conjunction with a burner specifically designed for this purpose.

For example, overheating and damaging the burner wall is prevented by a special air duct in the burner or burner cone, without the mixing and thus the effectiveness of the afterburning being impaired. By a tangential air inlet and / or fußgrundseitig konusmantelnah predominantly axially entering air inlet and / or a specific actual or effective conicity, for example in a range for the opening angle within the angular range of z. B. 10 ° to 30 °, in particular 14 ° to 24 °, or an area for the inclination of the cone wall of the effective inner or actual cone within the

Angular range of z. B. 5 ° to 15 °, in particular 7 ° to 12 °, a Zuluftpolster on the Brennerkonusinnenwand is generated and / or obtained, so that the flame is formed in a thus formed "air basket".

Of particular advantage for the training of a -. B. the flame despite possibly additional radial air inlet stabilizing - swirl flow can be an embodiment of the

Be burner cone with tangential Lufteintriffsöffungen. These can preferably by forming the Brennerkonusmantels or at least a section with

radiärsymmetrischer, in particular fan-like and / or twisted arrangement of several, z. B. more than two, preferably four, wall sections of a single or preferably multi-part running wall formed. The formation of the wall protecting against excessive temperatures air basket can advantageously by radial air inlet openings in the wall and / or

in particular by an air inlet from the foot base and / or result by the cone shape or at least be encouraged.

In an advantageous embodiment, with a supply air flow directed along the wall from the foot base, d. H. an annular sheath flow forming the air basket can in an advantageous development between the foot-side front end of the cone shell and an annular, the frontal burner nozzle profile surrounding additional guide element, for. B. baffle, done.

To form the air basket can instead or preferably in addition to the axial supply air flow and / or the swirl flow and / or the preferred cone geometry, d. H. the shell-like structure and / or the conicity, radial air inlet openings, for example as injector, be provided in the cone sheath. The or part of the injector openings may be variable in their degree of opening in order to adjust the air flow and the sheath flow can.

The mixing and thus the effectiveness of the afterburning alone or in particular in connection with the axial supply air flow and / or the swirl flow and / or the shell-like conical structure and / or the taper and / or the radial

Air inlet openings in the region of the downstream cone end are improved by near or in the plane of the outlet opening of the burner cone in the space surrounding the burner cone on the outside surrounding space obstructing flow obstacles. This is especially true in connection with the annular sheath flow, which must be broken at the cone end and swirled with the rest of the supply air stream.

The burner cone can, in particular in addition to the axial supply air flow and / or the swirl flow and / or the shell-like conical structure and / or the taper and / or, the radial air inlet openings and / or the flow obstacles comprise a downstream end plate through which a necessary pressure difference in the cone interior and / or termination of tangential inlet openings is effected.

Burner and Nachverbrennungsvorrichtung are z. B. executed in such a way that during operation of the burner, the exhaust air to a temperature level of> 600 ° C, especially greater 650 ° C, preferably> 700 ° C, z. B. about 750 ° C are heated at which the pollutants, eg. As hydrocarbons, decompose with the oxygen from the exhaust air in CO / C0 ₂ and water.

As exhaust air to be understood here, for example, exhaust or exhaust gas streams, the z. B. a significant and / or compared to the z. B. in Germany applicable limits contains increased hydrocarbon load. For example, the exhaust gas or exhaust air stream to be treated and / or surrounding the burner cone contains at least 5 g / m ³ of hydrocarbon compounds.

In an advantageous development of the post-combustion device, a heat exchange is provided in the clean gas flow, by means of which thermal energy can be delivered to a fluid flow for a process or for heating the system which delivers the exhaust air to be purified.

Embodiments of the invention are illustrated in the drawings and will be described in more detail below.

Show it:

Figure 1 is a schematic representation of an industrial plant downstream Nachverbrennungsvorrichtung. FIG. 2 is an enlarged view of the afterburning apparatus of FIG. 1; FIG.

Fig. 3 is a schematic representation of a front part of

 Post-combustion device with a burner;

Fig. 4 is a perspective view obliquely from the front for an embodiment of

 burner;

Fig. 5 is a rear perspective view of one embodiment of the burner; Fig. 6 is a side view of an embodiment of the burner;

Fig. 7 is a schematic diagram for a) a first and b) a second section through the wall of the burner;

8 shows a schematic sectional view in longitudinal section through the burner in the region of an outlet opening of the fuel nozzle;

Fig. 9 is a slightly perspective view from the front for an embodiment of the burner.

A device 01 for thermal aftertreatment, in particular for

Afterburning, a gaseous, for example contaminated fluid stream 02, z. B. a Nachverbrennungsvorrichtung 01, comprises a liquid or preferably gaseous fuel 03 can be operated or operated burner 04, in particular a fuel supply 07, z. B. fuel nozzle 07, and a so-called. Brennerkonus 06 comprehensive cone burner 04, which with at least his

Burner cone 06 in the flow path of the fluid stream to be treated 02, in particular exhaust air stream 02, projects and / or is arranged in this. About the fuel nozzle 07 is the preferred gaseous fuel 03, z. As natural gas, propane or LPG, can be fed into the space surrounded by burner cone 06 (see, for example, FIGS. 1, 2 and 3).

For the sake of simplicity, it is not intended to be aware of this point

a distinction is made - under the name "exhaust air" for the gaseous fluid to be purified both a fluid actually present as process exhaust air or "cold exhaust gas" and as a "hot" exhaust gas, in particular as combustion exhaust gas and thermally to be treated by post combustion a fluid stream 02 present as exhaust air or exhaust gas flow 02. The "exhaust air", which is also not referred to as raw gas and has not yet undergone thermal afterburning, originates, for example, from US Pat. B. from one of the device 01 based on the exhaust air to be treated upstream (or upstream) upstream, especially industrial plant 12. For example, this actually comes as exhaust air, z. B. as

polluted room air or process exhaust air from a plant room or process of a 12 designed as a production and / or processing unit 12 or as combustion exhaust gas from a combustion chamber of a running as a furnace 12 system 12th

In the thermal aftertreatment, the polluted exhaust air is heated by an open flame and oxidizable pollutants, such as hydrocarbons, at high temperatures, eg. As temperatures> 600 ° C, especially greater than 650 ° C, preferably> 700 ° C, oxidized. For example, hydrocarbons are oxidized to carbon dioxide and water. The oxygen required for this purpose is for example as a

Part of the raw gas to be purified carried by this and / or delivered. In contrast to burner systems, such as those used in energy production, the burner 04 is here z. B. not specifically with - in particular compressed - ambient air (ie, a low-pollution clean air gas mixture) fed, but is located in an atmosphere formed by exhaust air or environment with z. B. a hydrocarbon concentration of at least or more than 0.5 g / m ³ (25 ° C, 1 .013 mbar), in particular of at least 1, 0 g / m ³ . D. h., The burner 04 is in addition to the fuel rohgasseitig 03 only a polluted, but an oxygen content of z. B. at least 5%, preferably at least 10% entrained exhaust air supplied with a hydrocarbon load of at least 0.5 g / m ³ .

Downstream of the post-combustion leaves the thermally treated

Crude gas stream 02 comprehensive clean gas flow 08 the post-combustion device 01.

In a first, least elaborate and not explicitly shown here

Execution of the post-combustion device 01, the burner 04 or its burner cone 06 project directly into a pipe section of the exhaust air stream 02 of the system 06 discharging pipe or be provided in such a pipe section. This pipe section can be widened like a chamber in terms of its cross section with respect to a raw gas inlet and a clean gas side outlet section of the pipeline.

In a preferred embodiment in terms of handling and / or modularity and / or efficiency, the torch 04 is part of a self-contained one

Nachverbrennungsaggregat 01 trained device 01 and projects with at least the burner cone 06 into a the exhaust air to be treated inside the unit 01 leading raw gas chamber 09 into it. The raw gas space 09 surrounding the burner cone 06 is adjoined downstream by a combustion chamber 11, into the inlet opening of which a downstream outlet opening 13 of the burner cone 06 opens and which one or more parallel outlet openings 14; 16 for the exit of the afterburned

Pure gas from the combustion chamber 1 1 has.

The inlet opening of the combustion chamber 1 1 and the burner cone 06 at the level of

Exit opening 13 are z. B. dimensioned and arranged relative to each other, that between the outer circumference ausgansseitig defining edge of the burner cone 06 and the inlet opening-defining edge of an inlet-side, in particular end-side, combustion chamber wall 17 an entrance slit 18 is formed, through which raw gas from the raw gas space 09 directly, ie without first entering a trained inside the burner cone 06 Vormischkammer the burner cone 06 can flow into the combustion chamber 1 1. This entrance slit 18 can as a - possibly up to a few places between the burner cone 06 and the combustion chamber 1 1 arranged support and / or holding elements - continuously circulating or as a total of z. B. over an angular range of at least 270 °, preferably at least 300 ° of the circumference reaching free entrance gap 18 be executed. The level of

Inlet opening into the combustion chamber 1 1 and the plane of the outlet opening 13 of the burner cone 06 need not but can fall together. However, they can also be mutually spaced parallel to each other and in the axial direction of the burner 04, whereby the flat in the event of collapse, the Brennerkonusrand circumferential gap cross-sectional area in the axially offset case forms a frustoconical surface.

The provided in the interior of the Nachverbrennungsaggregat 01 Rohgasraum 09, in particular a Rohgaseintritt 19 of the Nachverbrennungsaggregates 01, the fluid to be cleaned 02 can be supplied as Rohgasstrom 02 upstream or Rohgasseitig of the system 03 via a corresponding pipeline.

In a simple embodiment, the raw gas inlet 16 directly into the

Brennerkonus 06 surrounding raw gas space 09 lead.

In an energetically advantageous variant, however, the feed into the raw gas space 09 takes place via a flow guide along a route section through a flow cross section 21 which is bounded at least on one side by the outside of a combustion chamber wall 22, in particular a longitudinal combustion chamber wall 22. For the preferred case of a cylindrical combustion chamber 1 1 and a combustion chamber 1 1 at least to the length of the combustion chamber 1 1 concentrically surrounding this cylindrical shell 23, z. B. outer shell 23 of the

Nachverbrennungsaggregates 01, 21 may be formed as a flow cross-section 21 on at least one section of an annular annular gap. This can - up to possibly provided support and / or holding elements between the combustion chamber 1 1 and sheath 23 - as reaching over the entire circumference of the circumference or z. B. as a total of at least 80%, preferably at least 90% of the undisturbed annular surface

be formed engaging free flow cross-section. When flowing along the combustion chamber outer wall 22, exhaust air of the exhaust air stream 02 which is subsequently to be burned further downstream can absorb energy in the form of heat by exchanging heat with the combustion chamber outer wall 22.

Instead of the heat exchange with the combustion chamber outer wall 22 or preferably additionally, upstream of the raw gas space 09, preferably upstream of the burner chamber outer wall 22 extending, z. B. annular,

Flow cross-section 21, in Rohgasweg a heat exchanger 24 for the recuperative heat exchange, z. B. in a design as a tube bundle heat exchanger 24 with a plurality of parallel-flow tubes 26, be provided through which a heat exchange between already nachverbranntem hot clean gas of the clean gas flow 08 and still to be purified raw gas of the crude gas stream 02 takes place or can be done. The heat exchanger 24 may in principle be structurally integrated as a separate unit upstream of the device 01 or, preferably, in the post-combustion unit 01 and downstream of the raw gas inlet 19 in the flow path.

In this case, the raw gas can in principle either be guided in the tubes 22 of the heat exchanger 24 or, preferably, the tubes 26 of the heat exchanger 21 flow around on the outside. Conversely, the clean gas can flow around the tubes 26 of the heat exchanger 21 on the outside or preferably in the parallel tubes 22 of the

Heat exchanger 24 may be guided to a common collection and discharge space 27, before the clean gas flow 08 leaves the device 01 through a clean gas outlet 28.

In the illustrated advantageous embodiment, the unpurified exhaust air is passed over the tube bundle of the heat exchanger 24 in the cross / counterflow. The exhaust air is preheated and flows in the outer annular gap 21 around the combustion chamber 1 1 around to the other end of the combustion chamber 1 1, where it is deflected in the direction of the burner 04. Part of the exhaust air flows in an advantageous, set out in more detail below

Embodiment, from the side and / or from the upstream end side by the burner 04 itself and also serves as an oxygen supplier for combustion in the burner 04, another part flows past the burner 04 through the example annular entrance gap 18 into the combustion chamber 1 first Both parts are then with the hot burned exhaust air / gas mixture from the burner cone 06 to a

Target temperature of z. B.> 700 ° C, z. B. 720 to 750 ° C, mixed. The in the

Incorrect exhaust gases contained in unburned exhaust air (mainly hydrocarbons) then burn in the combustion chamber to C0 ₂ and water as soon as they reach the setpoint reaction temperature. The turbulence in and the geometric

Design of the combustion chamber 1 1 is advantageously dimensioned such that the residence time in the combustion chamber 1 1, z. B. at least 0.5 s, designed so that the proportions of the legally permitted residual contents of CO, NO _x and unburned hydrocarbons are exceeded. The burnt, purified exhaust air then flows through the tubes of the heat exchanger 24 and gives off a large part of their heat to the inflowing unpurified exhaust air.

In addition to the tubes 26 of the heat exchanger 24 a -. B. centrally extending - bypass guide 29 with an example by means of an actuating means 34, for example an actuator 34, via an actuating element 31, z. B. an adjustable flap 31, be provided remotely variable flow rate. As a result, for example, the heating of the raw gas can be varied within limits. In order to promote the nachverbrennende raw gas through the Nachverbrennungsvorrichtung 01 can in the Nachverbrennungsvorrichtung 01 or in the raw gas stream 02 leading to the post-combustion device 01 pipeline, a gas conveyor 32, for. B. designed as a fan, as a compressor or as a pump conveyor, be provided.

In a instead of or preferably in addition to the heat exchanger 24 provided embodiment of the afterburning 01 or 01 comprising the device exhaust treatment can downstream of the preferably with or optionally without heat exchanger 24 formed Nachverbrennungsvorrichtung 01 a device for heat recovery 33 may be provided in the flow path of the clean gas stream 08. In principle, the heat recovery can be based on any technology, but is preferably recuperative with a heat over a heat exchanger 36 between the still hot clean gas flow 08 and a fluid of Nutzwärmeseitigen heat transfer fluid flow 37, z. B. a Heizfluidkreislaufs 37, executed. Although the device for heat recovery 33 may in principle also be structurally integrated in the post-combustion device 01 configured as an assembly 01, it is preferably configured as an independent sub-assembly 33 of the post-combustion device 01 in a system for exhaust air treatment. It may, for example, a heat dissipation via, for example, the flow guidance by means of an actuating means 38, for example an actuator 38, via an adjusting element 39, z. B. a system adjustable flaps 39, be remotely variable. Thus, the temperature of the device for heat recovery 33 leaving

Clean gas stream 08 ', which downstream, for example, z. B. is to give a fireplace 41 to the environment is varied within limits. This may possibly be necessary to comply with the dew point limit to be observed for the chimney flue.

For the above-mentioned embodiments and expansion variants of the device 01 for thermal aftertreatment and / or a post-combustion device 01 Comprehensive exhaust air treatment is designed as a cone burner 04 burner 04 according to the invention in an embodiment variant described below with one or more of the following particularly advantageous

Design features designed.

The term "torch cone" 06 here does not designate a cone as a body in terms of its geometric meaning with a regular and, for example, uninterrupted shell-side rotation surface, but - as in connection with cone burners in common usage - a one- or multi-part component, which is a in the cross-sectional area towards the outlet funnel-shaped premixing chamber 42 laterally limiting one or more parts, possibly interrupted by air passage openings to the outside cone sheath 43 or, hereinafter also referred to as wall 43 or

Wall structure 43 includes (see, for example, Fig. 4 and Fig. 5). This is funnel-shaped at least in a longitudinal section in the direction of the outlet opening of

Burner cone 06 opening towards z. Wall 43, or wall structure 43, can, viewed in one or more cross-sections perpendicular to the axial direction of burner 04, form an irregular peripheral line, which may be interrupted in places, as shown in FIG. 6 and FIG. The space surrounded by the burner cone 06 or its wall 43 or multi-part wall structure 43 forms the premixing chamber 42, in which (residual) oxygen-containing exhaust gas and the fuel 03 can mix.

The axial direction of the burner 04 is z. B. by the course of a center of gravity or symmetry axis S of at least in a funnel-shaped opening

Konuslängsabschnitt with respect to its interior limiting side of its wall rotationally symmetric or at least n-fold (ne IN, n> 1), z. B. at least twice, radiärsymmetrisch trained burner cone 06 given. Upstream and / or downstream of this opening longitudinal section of the burner cone 06 does not have, but can - which is at least the interior of the limiting side of its wall 43 or Wandstriktur 43 relates - also in the above manner symmetrical, z. B. at least radially symmetrical, be formed. Also, the burner cone 06 for the sake of simplicity on the design of the inner wall side addition - possibly up to aerodynamically irrelevant attachments such. As attachments or required electronics and / or sensors - overall structurally symmetric, z. B. at least radially symmetric to the

Symmetry axis S be executed. As radial symmetry or rotational symmetry is here to understand a form of symmetry in which the rotation of an object by a certain angle about an axis of symmetry brings the object again with itself to cover. With an n-fold radial or rotational symmetry, a rotation of 360 n forms the object on itself.

The fuel nozzle 07 comprises at least one fuel outlet 44 for delivering the z. B. liquid or preferably gaseous fuel 03 in the interior of the

Burner cone 06 formed Vormischkammer 42. The fuel nozzle 07 can basically in any geometry with one or more in the direction

Premixing chamber directed openings 44 may be designed as an outlet or outlets. However, it is preferably - at least in the region of its cone-shaped end portion - tubular and designed with a frontally centrally provided circular disk or annular fuel outlet 44 forming opening 44. In a variant, further, possibly smaller openings may be provided symmetrically around the central opening 44.

The fuel nozzle 07 and the burner cone 06 are viewed in the axial direction advantageously arranged such relative to each other, so that at least one foot portion of the burner cone 06, z. B. an upstream end of the wall 43 or a specially provided Konusfuß 46, which carries the upstream end of the wall 43 and the wall construction 43, the fuel nozzle 07 at least at the level of the at least one Brennstoffauslasses, but preferably on a fuel outlet upstream extending longitudinal section , z. B. in the manner of a cuff surrounds. The term upstream, upstream, downstream and downstream refers to the axially-oriented flow direction of the fuel in the outlet region of the fuel nozzle 07, unless stated otherwise or obviously different.

In the case of a specially provided cone foot 46, this forms the upstream end-side termination of the burner cone 06 and carries the one- or multi-part conical shell-side wall 43 or wall structure 43. Otherwise, the

upstream end of the burner cone 06 formed by the upstream end of the wall 43 and the Wandkonstriktion 43.

Irrespective of the designation, the conical base 46 may be structurally attributable to the fuel nozzle 07, with a detachment between the cone foot 46 and the wall 43 or wall structure 43 taking place to remove the premixing chamber 42. Conversely, the cone foot 46, however, in a preferred embodiment structurally be attributable to the burner cone 06, wherein for removing the burner cone 06 a release of the

Wall 43 and wall structure 43 bearing cone base 46 of the burner nozzle 07 or an attachment 47 of the burner nozzle 07 between the fuel nozzle 07 and cone base 46 takes place. In addition, for further disassembly of the burner 04, the cone foot 46 can also be detachably connected to the wall 43 or wall structure 43.

The foot base 49 may be formed by the side facing the cone interior of a designed as a closure ring or spoke ring Konusfußes 46, viewed in the circumferential direction of the fuel nozzle 07 several predominantly extending in the axial direction and / or a predominant axial flow permitting

Bushings 48 - z. B. between spoke-like support elements remaining open areas or introduced into a ring axial openings - have. Basically, the footing 49 also by a completely open space between the upstream end of the wall 43 and the fuel nozzle 07 may be formed at the axial height or axially upstream of the fuel nozzle end, if the cone 06, for example, not on the burner nozzle 07 or this stormaufwarts continuing tubular piece, but from the outside, z. B. on a Abgaskamme- or

Combustion chamber wall, is attached.

Preferably, several feedthroughs 48 around the fuel nozzle 07 and / or at least about their along the axis of symmetry S in the plane perpendicular to the symmetry axis S considered in the front foot well 49 of the burner or burner cone 06

Projection around provided. The bushings 49 are z. B. such that they cause the exit of the exhaust air into the cone interior in a predominantly axial flow.

In an advantageous embodiment, the cone foot 46 is formed by a component in the manner of a face plate with a preferably annular, for example, the preferred tubular fuel nozzle 07 receiving in the assembled state receiving opening and z. B. releasably connected to the fuel nozzle 07 non-positively and / or positively. The Konusfuß 46 is preferably designed annular and may be formed in the manner of a clamping ring set, wherein one of the two clamping rings, the wall 43 and wall structure 43 carries and frictionally connected by a clamping ring with the fuel nozzle 07 on the outer circumference.

Preferably, the cone foot 46 by a front plate z. B. in execution of a flange 46, in particular flange rings 46, formed with exemplary annular recess, which with a, for example, on the circumference of the fuel nozzle 07 with a flush or preferably with an offset to the nozzle end side of the

Fuel nozzle 07 arranged as a flange 47, in particular flange 47, formed attachment 47 is connectable (see, for example, Fig. 8). The z. B. designed as a clamping ring or flange 46 cone base 46 is preferably arranged in the assembled state with its circular opening centric to the axial direction of the burner 04. The wall 43 or the wall construction 43 is arranged with its stromaufwartigen end at least on a portion of the circumference in sections, advantageously predominantly, preferably in the entire circumferential region radially spaced from the lateral surface of the particular tubular burner nozzle 07, so between the stromaufwartigen end of the wall 43 and the wall construction 43 at least in the circumferential direction of the burner nozzle 07 sections, but preferably - except for possibly provided support and / or holding elements - fully in the radial direction, a gap with a distance d, z. B. a distance d of at least 1 mm, advantageously of at least 5 mm, in particular at least 10 mm between the combustion nozzle 07 and the wall 43 or wall construction 43 is present. Possibly. can in this end an annular and z. B. except for possibly provided support and / or holding elements freely or partially permeable space between the burner nozzle shell and wall 43 or wall construction 43 with a ring width of z. B. at least 1 mm, preferably at least 5 mm, in particular at least 10 mm, are present. The possibly

interrupted bottom clearance in this case represents a flow-through fluid passage in a front footing 49 of Brennerkonus 06. The bottom 49 denotes the narrower upstream end of Brennerkonus 06, which surrounds the downstream end of the fuel nozzle 07 and the latter together with the upstream conclusion the Vormischklammer 42 forms.

For the execution of a specially provided - especially the tubular

Burner nozzle 07 encompassing - cone 46 carries this the upstream end of the wall 43 and the wall construction 43 at least on part of the circumference in sections, advantageously predominantly, preferably circumferentially radially spaced from the surface of the particular tubular burner nozzle 07, so that on the premixing chamber facing side of the cone foot at least in the circumferential direction of the burner nozzle 07 sections, but preferably fully a distance d in the radial direction, z. B. a distance d of at least 1 mm, advantageous of at least 5 mm, in particular at least 10 mm between the combustion nozzle 07 and the wall 43 or wall construction 43 is present.

In an advantageous and illustrated embodiment is also in the version with a specially provided Konusfuß 46 in this end an annular

Gap between the burner nozzle shell and the upstream end of the wall 43 and the wall construction 43 with a ring width of z. B. at least 1 mm, preferably at least 5 mm, in particular at least 10 mm before. In a preferred embodiment are in Konusfuß 46 in the circumferential direction a plurality of opening into the gap, z. B. as air inlet nozzles 48 effective

Bushings 48 provided. The passages 48 open in the interior of the premixing chamber in the bottom of the foot 49 or on the bottom surface 49 bounding the premix chamber side end face of the particular in the manner of a face plate

formed cone base 46, within the circumference surrounded by the upstream end of the wall 43.

The bushings 48 end, for example, z. B. coming from the upstream end side of the Konusfußes 46 forth, formed in a between the upstream end of the wall 43 and wall construction 43 and the Brenstoffdüsenmantel space.

The bushings can basically any, z. B. as round holes or in the form of spaces formed by spoke-like struts. In an advantageous embodiment, they are designed as slit-like channels in a rectangular shape, which establishes a guided flow for the purpose of forming an air cushion or basket on the wall inside.

The burner 04 advantageously has at least one opening of the at least one space 09 surrounding the burner 04, preferably leading into the cone interior at the front side Feedthrough 48 (as an open ring or as a plurality of feedthroughs 48) preferably in an upstream foot section at the axial height or upstream of the downstream end of the fuel nozzle 07, ie, depending on how it is carried out, its raw or outlet port 14.

The without specially provided cone foot 46 z. B. annular possibly open up to support and / or holding elements or by the cone foot 46 entirely or preferably only partially completed upstream end of the burner cone 06 and the burner cone 06 formed by the premixing chamber is also referred to as the bottom 49 of the burner cone 06 and is in a preferred embodiment of gaseous fluid, for example, exhaust air from the raw gas space 09, flowed through. A flow through the foot base 49 can in this case take place with the flow component running predominantly in the axial direction of the burner 04, ie. h., The flow characterizing vector has in the axial direction compared to a radial component larger

Directional component. A flow through the foot base 49 in the axial direction without a significant radial component is preferred. For the o. G. Case of a specially provided cone foot 46, the exhaust air flows as supply air through the passages 48 in the cone base 46, otherwise by the sections or fully free

Interspace between wall 43 and wall construction 43 and

Burner nozzles coat.

In the embodiment with a trained in the manner of a flange 46 cone foot 46 of this fastening means 49, z. B. via a screw 49, arranged with the arranged on the fuel nozzle 07 extension 47, z. B. flange 47, be connected. This attachment 47 is designed in the case of the foot-side flow-through with a flow through the bushings enabling structure, z. B.

also to the bushings 48 aligned recesses or passages 52nd

The burner 04 is thus in the result between the upstream end of the on or multi-part wall of the burner cone 06 and the outer circumference of the surrounding of a foot portion of the burner cone 06 burner nozzle 07 at the level or upstream of the fuel nozzle orifice formed with a at least predominantly in the axial direction of gaseous fluid to flow through the bottom 49. The predominantly axially extending lead-through 48 preferably leads from an end-side opening to the environment to the mouth lying in the bottom 49.

In a particularly advantageous development of the burner embodiment, which can be flowed through in the region of the foot base 49, a circle which is completely continuous or partially multi-part can be located on a circle lying radially further inwards relative to the mouth of the one or more base-side bushings 48

Guide element 51 may be arranged radially between the at least one fuel outlet and the passages. By the guide element 51 and the relevant section flowing through the respective passage 48 fluid, z. As exhaust gas, directed in a direction inclined to the symmetry axis S direction in the direction of the funnel-shaped opening wall 43 and forms at this a sheath flow. Through all-round bushings 48 in conjunction with a partially or continuously arranged over the circumference guide element 51, z. B. baffle 51, an annular sheath flow from the fluid, z. B. the exhaust gas from the

Raw gas space 09, from which the wall 43 protects against overheating by direct action of the burner flame. The guide element 51 is preferably formed as a fully extending guide plate 51 and is formed for example in the form of a truncated cone opening which opens downstream in the axial direction. The measured against the symmetry axis inclination angle (= half the opening angle) of z. B.

Kontsumpfmantelartig shaped baffle 51 should in the range of the opening for the cone portion preferred angle range, for. B. in the range of 10 ° to 20 °, in particular 12 to 16 °. The guide element 51 formed in particular as a guide plate 51 extends in the axial direction z. B. at least from the height of the downstream end of the fuel nozzle 07 shell side limiting Pipe piece forth over at least a length of 10 mm, preferably at least 20 mm. Thus, after the leakage of the fluid z. B. axially present flow direction can be effectively directed towards the wall.

For the case of a burner cone 06, the opening portion of which begins after a straight input section, the baffle 51 should initially extend tubular over the length of the straight entrance section and following the bend of the wall 43 still over at least 10 mm, preferably at least 20 mm ,

The stated embodiment with foot-side through-flow already causes a considerable improvement of a burner 04 for the afterburning of exhaust gases, but can in combination with an embodiment of the embodiment of the cone shell 43 set out below with regard to the radiärsymmetrischen and / or chordal configuration and / or conicity and / or in connection with an embodiment of the turbulence further favoring embodiment of the downstream cone edge to be particularly advantageous.

As already explained above, the burner cone 06 as a one-part or multi-part component comprises a premixing chamber 42 opening funnel-shaped on at least one longitudinal cone section in the cross-sectional area. The burner cone 06 or its wall 43 projects on the fuel outlet 44 in the axial direction of the fuel outlet 44 Burner 04 downstream, funnel - shaped cone longitudinal section a section of the premixing chamber with an increasing distance from the

Fuel outlet steadily increasing, measured perpendicular to the axial direction

Surrounded and / or encased flow cross-sectional area.

The torch cone 06 can, as shown here in the example, on its entire length - for example, except for a possibly provided specifically for holding the cone foot 46 and / or a possibly specifically for stability and / or functional reasons provided closing element 53 - be funnel-shaped opening. In unillustrated embodiment, he can have a constant cross-sectional area

extending input portion having a correspondingly shaped wall and / or extending with a constant cross-sectional area output portion having a correspondingly shaped wall.

In an alternative embodiment, the burner cone 06 downstream of the funnel-shaped opening section may have a re-tapered section.

In principle, the wall 43 or wall construction 43 in a first

Embodiment - which relates to the inner wall surface area - in at least one of the opening cone longitudinal section in one piece and / or rotationally symmetrical about the coincident with the axis of symmetry axial direction of the burner 04 be executed. This may also be the case irrespective of possibly provided air passage openings for the wall 43, which may then be interrupted at certain points. In this

radially symmetric special case of a radial symmetry for the wall 43 or

Wall structure 43 of the burner cone 06 extends this in axially spaced sections on circular lines of varying radii, wherein the space surrounded by the wall 43 and 43 wall space in the opening cone longitudinal section has the shape of a truncated cone and such, with the wall 43 over the entire surface in

Touch contact (virtual) truncated cone can record.

In an advantageous second embodiment for the wall jacket surface of the wall 43 or wall construction 43 of the burner cone 06, the latter has at least in the funnel-shaped cone longitudinal section a wall structure which is n-fold radiatively symmetrical with respect to the axial direction (with ne IN, n> 2), at least with a number of at least 2, ie n> 2, advantageously with a number of more than two, ie n> 2, in particular with a number of at least 4, ie n> 4, preferably four, ie n = 4 on and / or is radially symmetric with n around the Symmetryeachse S forming axial direction arranged, for example, shell-like wall sections 43.1; 43.2; 43.3; 43.4, z. B. so-called conical wings 43.1; 43.2; 43.3; 43.4 or briefly wings 43.1; 43.2; 43.3; 43.4, for example as "n-shell", preferably four quarter shells trained.

In a special case of the second embodiment with radial symmetry for the wall 43 or wall structure 43 of the burner cone 06, in a first variant, the individual shell-like wall sections 43.1; 43.2; 43.3; 43.4 of the multi-part wall construction 43 when trained as truncated cone shells with their considered in cross-section lines on circular lines or training as Pyramidenstupfseiten arranged with their cross-sectional lines on a closed polygonal pyramid base, wherein the wall 43 and wall structure 43 surrounded space in itself opening cone longitudinal section in the first case has the shape of a truncated cone and in the second case of an m-side truncated pyramid (here then with n = m). In both cases, this can by the wall 43 and

Wall structure 43 defined interior thus accommodate a maximum (virtual) truncated cone, the area in the first case with the entire surrounding the interior wall 43 and wall structure 43 and in the second case along the line

Side heights of the truncated cone sides is in touching contact with these.

Whether in rotationally symmetric or non-rotationally symmetric, only

radiärsymmetrischer execution of the opening cone section has in an advantageous embodiment, the burner cone 06 outwardly surrounding and / or enveloping wall 43 or wall construction 43 on the entire or at least a portion of the funnel-shaped cone longitudinal section in the axial direction perpendicular to the cross-section viewed at least one

Interruption, in particular several interruptions 54, z. B. air or

Exhaust air inlet openings 54, through which to be treated exhaust air from the space surrounding the burner can flow into the burner interior. In a preferred embodiment, these exhaust air or air inlet openings 54 are formed as radially outwardly from the circumferential line elevating tangential inlet openings 54 for a tangential air inlet of the burner cone 06 surrounding air or exhaust air. These tangential inlet openings 54, which are preferably slit-shaped or slit-shaped in the longitudinal direction of the burner 06, are preferably formed by the fact that, viewed at the axial height of a relevant inlet opening 54 in the circumferential direction, the inlet area 54 forms adjacent edge areas between them

Circumferential sections of a one- or multi-part wall 43 or wall construction 43 with respect to the symmetry axis S are radially spaced from each other. Basically, these inlet openings 54 by the corresponding configuration of

Circumferential sections with openings and shaping a one-piece wall 43 or preferably by the geometric arrangement of individual wall sections

Wall sections 43.1; 43.2; 43.3; 43.4 be formed. When forming a negative pressure in the cone interior can then only air with at least one significant

Tangentialkomponente be sucked through the inlet openings 54.

Whether in rotationally symmetric or non-rotationally symmetric, only

a radially symmetric design of the opening cone section is a concrete or "internal" conicity (ie the maximum truncated cone to be received in the opening section) with an inclination angle * against the burner axis or symmetry axis S (= eg half the opening angle) of 5 ° to 15 °, in particular from 7 ° to 12 °, of particular aerodynamic advantage

Premixing chamber on the outer side bounding inner wall of the wall 43 and wall structure 43 of Brennerkonus 06 formed at least in the funnel-shaped cone longitudinal section in shape and structure for receiving a maximum (virtual) Kegelstupfes largest cross-sectional profile, which is defined by that he at least two in the axial direction from each other

spaced-apart cross-sectional planes, each at least three in the circumferential direction spaced apart locations, wherein in a the axis of symmetry S comprehensive sectional plane of the burner cone 06 projected, extending in the truncated cone jacket in the longitudinal direction of the burner cone surface line of this maximum virtual straight truncated cone with the axial direction or symmetry axis S a

Tilt angle of 5 ° to 15 °, in particular from 7 ° to 12 °, preferably from 10 ° ± 1 °, forms.

In a here shown and preferred second variant of the second

Embodiment for the execution of the wall 43 and wall structure 43 of the

Burner cone 06 with n-fold radiärsymmetrischem circumferential course in the opening cone longitudinal section follow in the direction perpendicular to the axial direction

Cross-section considered by the individual wall sections 43.1; 43.2; 43.3; 43.4 a one-piece or in particular multi-part design of the wall 43 formed

Peripheral sections u1; u2; u.3; u.4, in contrast to the first variant, at least not over its entire length of a same circle K1; K2; Κ1 '; K2 'or closed Polygenzug, but are in their adjacent peripheral portion ends of two circumferentially adjacent wall sections 43.1; 43.2; 43.3; 43.4 radially offset from one another. Due to the radial offset of the viewed, for example, in the angular range about the axis of symmetry S overlapping or at least continuously continuing adjacent peripheral portion ends tangential Luftbzw. Exhaust air inlet openings 54 formed by which a spin is excited in the cone interior.

The burner cone 06 thus preferably comprises at least in the funnel-shaped opening Brennerkonusabschnitt the wall 43 n, z. B. more than two or even at least four by the example fan-like arrangement of preferably (partially) shell-like wall sections 43.1; 43.2; 43.3; 43.4 formed, circumferentially spaced and radially each from the preceding circumferential shell portion - in particular outwardly - radially rising tangential inlet openings 54 for a tangential air inlet of the burner cone 06 surrounding exhaust air.

In a special advantageous embodiment of the wall sections 43.1; 43.2; 43.3; 43.4 the second variant with shell-like, z. B. frustoconical shell or

truncated pyramid side or otherwise, shaping are the n radially symmetrically offset wall sections 43.1; 43.2; 43.3; 43.4 about a respective parallel to the axial direction or axis of symmetry S extending imaginary axis with respect to a closed truncated cone shell structure or

Pyramid stump sheath structure forming orientation twisted arranged. The axes cut z. B. in this case all a concentric about the axis of symmetry S extending circular line equidistant from each other in the circumferential direction. By such a twisted arrangement of otherwise formed in the same way wall sections 43.1; 43.2; 43.3; 43.4 a fan-shaped conical surface is formed in the circumferential direction.

In such an advantageous embodiment, the pitch cone axes are formed in the form of part cone shells wall sections 43.1; 43.2; 43.3; 43.4 not on a common cone axis, so that the o. G. tangential inlet openings 54 in their opening cross section on the outside of the wall 43 radially each rise from the circumferentially preceded before circumferential peripheral portion.

In an advantageous special case of this embodiment, the wall sections 43.1; 43.2; 43.3; 43.4 as equally large shell segments 43.1; 43.2; 43.3; 43.4 of a profile closed in radial symmetry, z. B. kegelstupfmantel- or z. B. I - (I elN, I> n, eg., I = n ^* m) designed truncated cone shaped cone shell, which against one of the above -. B. parallel to the axis of symmetry S - axis are rotated by the same angle. These shell segments 43.1; 43.2; 43.3; 43.4 can in

Circumferential direction opposite its length in the closed form each be slightly extended (see angle δ), so that the thus twisted shell segments 43.1; 43.2; 43.3; 43.4 in the circumferential angle with respect to the axis of symmetry S continue at least directly or advantageously slightly overlap.

In the case of the second variant in the cross-section of the opening portion not in each cross section of the opening cone section with the peripheral portions entirely on a circle K1; K2; KV; K2 'extending wall 43 or

Wall construction 43 with z. B. in a manner mentioned above fan-shaped and / or rotated on the circumference arranged wall sections 43.1; 43.2; 43.3; 43.4 and / or in the event that by the shaping of the wall sections 43.1; 43.2; 43.3; 43.4 in

Circumferential direction o. Mantellinien different inclination occur against the axis of symmetry S, for the characterization of the conicity in a first, the strength of the radial offset of the adjacent peripheral portion ends and / or the extent of o. G. Twisting and / or twisting of the wall sections 43.1; 43.2; 43.3; 43.4 method, which is not considered as a conical effect in the first approximation of o. G., Which is effective for the twisting motion and / or the proximity to the flame. maximum (virtual) inner Kegelstupf largest cross-sectional profile are used, as defined above in connection with the first variant. This virtual truncated cone corresponds to the objective straight truncated cone which can be introduced as far as possible into the opening cone section and at the same time can correspond to a smallest effective angle of inclination Φ1 of a pointed truncated cone, as defined in the following embodiment.

For a further, possibly in addition to the characterization mentioned with the inner maximum cone of potential candidate characterization for the formation of the fan-shaped radiärsymmetrisch trained Brennerkonus 06 can a sharpest virtual truncated cone, which determines by the inwardly directed portions of the wall 43 of each wall section with the smallest inclination is, and in addition the most obtuse virtual truncated cone are used, which determines by the inwardly directed portions of the wall 43 with the greatest inclination against the axis of symmetry S. is.

Here, an embodiment of the burner cone 06 is of particular advantage, wherein the wall sections 43.1; 43.2; 43.3; 43.4 of the torch cone 06 in the area of the

Pre-mixing chamber 42 outwardly bounding wall 43 and wall construction 43 are formed at least in the - quasi funnel-shaped - opening cone longitudinal section in shape and structure such that the sharpest virtual

Truncated cone has a cone or opening angle of at least 10 °, preferably at least 14 °, d. H. one in this funnel-shaped opening

Konuslängsabschnitt in the longitudinal direction of the burner cone inside on the same wall portion extending and least inclined to the axial direction of the generatrix in

perpendicular projection on a sectional plane comprising the axial direction with the axial direction forms an inclination angle of at least 5 °, advantageously at least 7 °, but in this embodiment, this is below that of the blunt truncated cone. The blunt virtual truncated cone has in such an embodiment with in the circumferential direction of the shells varying inclination a maximum cone or opening angle of z. B. at most 50 °, preferably at most 40 °, on, d. h in this funnel-shaped opening cone longitudinal section in the longitudinal direction of the

Brennerkonus 06 extending inside the wall portion and most inclined to the axial direction of the generatrix in a perpendicular projection on a sectional plane comprising the axial direction with the axial direction a maximum inclination angle of z. B. at most 25 °, preferably at most 20 °, be formed.

An "average" conicity or a mean inclination angle * ^* , which can be used in this way for a more precise geometric characterization, is formed, for example, by averaging, for example by means of integral averaging along the

Circumferential direction determined by the inclination of all surface lines, ie averaged over the circumference length weighted averaging, corresponds to the mean value of the passing over a plane passing through the axis of symmetry S over the considered circumferential portion, z. B. the 360 ° circumference or surrounded by the respective wall portion angle range, on the inside of the wall 43 and

Wall construction 43 resulting average. This average inclination may advantageously be 10 ° to 20 °, in particular 12 ° to 17 °.

In the embodiment of the burner wall 43 with an o. Embodiment of

Wall sections 43.1; 43.2; 43.3; 43.4 in the form of twisted against each other

Sheath segments of a radiar symmetrical pyramid or truncated cone corresponds to z. For example, the integral mean is the arithmetic mean.

In the fan-like design with two generatrices of different inclinations and / or with each other about each one to the axial direction twisted shell segments 43.1; 43.2; 43.3; 43.4 have the wall sections 43.1; 43.2; 43.3; 43.4 each in the region of a first end viewed in relation to a circumferential direction of the burner cone 06 a first in the longitudinal direction of the burner cone 06 with a against the axial direction to z. B. a first, z. B. the smaller inclination angle * 1, inclined

Mantellinie and in the region of a relative to the circumferential direction of the burner cone 06 second end a second in the longitudinal direction of the burner cone 06 with a stronger against the axial direction to z. B. a second, z. B. the larger inclination angle * 2, inclined extending generatrix.

In an embodiment which is advantageous for the fan-shaped embodiment, the inclinations at the two points of greatest deviation deviate by at most 5 °, advantageously by at most 3 ° from one another.

In the downstream funnel-shaped cone longitudinal section of the burner cone 06 (cone section) is thus a plurality, for. B. the number n, thus formed with the first and second ends of different inclination wall sections 43.1; 43.2; 43.3; 43.4 arranged staggered in the circumferential direction of the burner cone 06 in such a way that in Circumferentially viewed a less inclined second end of a over a first angular range, z. B. 360 n plus possibly a small separation δ (δ from 1 ° to 5 °), in particular 90 ° or 90 ° + δ, reaching first wall section 43.1; 43.2; 43.3; 43.4 by a to the first angle range with regard to the on

Burner longitudinal axis as the center-related angle gapless or with a small angular coverage δ (overlap) subsequent, opposite the second end of the first wall section 43.1; 43.2; 43.3; 43.4 more inclined first end of a second wall section 43.2; 43.3; 43.4; 43.1; will continue. The related to the axis of symmetry S through the respective adjacent wall sections 43.1; 43.2; 43.3; 43.4 angle sections covered in the circumferential direction continued at least completely or even slightly overlap in the above sense. This is a - with respect to the axis of symmetry S - purely radial flow through the between the adjacent wall sections 43.1; 43.2; 43.3; 43.4 formed tangential inlet openings 54 prevented. The first end of the second wall section 43.2; 43.3; 43.4; In this case, for example, 43.1 is spaced further apart radially than the second end of the first wall section 43.1 in at least one downstream end section of the cone-shaped longitudinal section which opens in the funnel shape in the downstream direction. 43.2; 43.3; 43.4.

In the area of the cone foot 46, the fan-like adjacent cone wings 43.1; 43.2; 43.3; 43.4 with their end sections

converge or such. B. in an advantageous embodiment as shown radially spaced from each other to limit the cone bottom 49. In the first case, the closes between the adjacent cone wings 43.1; 43.2; 43.3; 43.4 towards the bottom 49, in the preferred second case between the adjacent conical wings 43.1; 43.2; 43.3; 43.4 to the bottom 49 towards a tangential air or exhaust air inlet opening 54 is formed, which, however, can taper to the bottom of the foot in its gap width.

In Fig. 6 and Fig. 7, the situation for the stated embodiment with varying Slope for the second variant illustrated, wherein in Figure 7 by a schematic representation of two axially spaced-apart cross-sections I - 1; II-II (see eg Fig. 6) of the opening cone longitudinal section, an inner virtual truncated cone shell M1; M2 are indicated by the circle lines K1 and KV, and an outer virtual truncated cone shell by the circular lines K2 and K2 '. 6, an example of a rotationally symmetrical Brennerkonusausführung a for an inner virtual truncated cone exemplarily present smaller inclination angle * 1, which can correspond to an actual inclination angle * as "effective" inclination angle, for example in rotational symmetry, an example of an external virtual truncated cone present greater inclination angle * 2 and indicated by an above averaging example averaging tilt angle indicated.

The cone 06 is preferably designed with such an effective or moderate inclination, so that the resulting effective or average inner radius or diameter from the upstream end to the downstream end of the

funnel-shaped cone section toward increased by a factor of 4.8 to 5.8, in particular 5.0 to 5.5. For example, the cone 06 at the downstream cone end of its funnel-shaped longitudinal portion with an effective or average diameter of 500 mm to 700 mm, in particular from 550 mm to 650 mm, be executed.

For the o. G. advantageous case of the sheath segments 43.1; 43.2; 43.3; 43.4 of a profile closed radially symmetrical cone shell - possibly with the extension in the circumferential direction to form the closed angle range and possibly an overlap - are the wall sections 43.1; 43.2; 43.3; 43.4 by equally large shell segments 43.1; 43.2; 43.3; 43.4 of a z. B. l-sided straight

Pyramidenstupfmantels or a straight truncated cone mantle given the inclination of the pyramid side surfaces against the axial direction in the first case and the inclination of the truncated cone surface in the second case preferably that of o.

actual or effective angle of inclination *, ie at 5 ° to 15 °, in particular 7 ° to 12 °. The rotation, for example, by 3 ° to 10 °, about the respective axis causes the result of the twisting of the two

peripheral ends of the shell segment 43.1; 43.2; 43.3; 43.4 mutually different inclination 1; Φ2 against the axis of symmetry S or the axial direction of the burner cone 06 or burner 04.

For the actual truncated cone in radially symmetrical design, as well as for the maximum virtual inner truncated cone is preferred that the

Premixing chamber 42 on the shell side outwardly bounding inner wall 43 of the burner cone 06 is formed at least in the funnel-shaped cone longitudinal section in shape and structure for receiving a maximum virtual Kegelstupfes largest cross-sectional profile, the z. B. at least two axially spaced-apart cross-sectional planes of at least three circumferentially spaced locations on the wall 43 is present, and the truncated cone of this maximum virtual truncated cone in the in

Longitudinally extending generatrix with the axis of symmetry S in

Circumferentially constant angle of inclination of 5 ° to 15 °, preferably from 7 ° to 12 °, forms.

The ends of the circumferentially adjoining, but in the end region radially spaced shell segments 43.1; 43.2; 43.3; 43.4 can be partially connected to each other via support elements 68 and thus increase the strength of the cone structure.

In principle, the n circumferential sections u1; u2; u.3; u.4 of the wall sections 43.1; 43.2; 43.3; 43.4 or shell segments 43.1; 43.2; 43.3; 43.4 viewed in the circumferential direction by a homogeneous component with a bent in the axial direction perpendicular to the cross-sectional plane without bending bent curve be formed. The burner cone 06 can downstream through a with the wall 43 and

Wall construction 43 - in particular material or form-fitting - connected

End element 53, z. B. a surrounding the opening end plate 53, be completed. This end plate 53 can only be embodied for stiffening and / or for forming a collar 62 or edge region 62 that surrounds the end-side outer contour of the wall 43 or wall construction 43 in a collar-like manner. Instead or in addition, the end plate 53, the z. B. slotted between the in

Circumferential direction of adjacent wall sections 43.1; 43.2; 43.3; 43.4 formed tangential air or exhaust air inlet openings 54 arranged downstream covering and / or executed. With such a trained edge 62, a swirling of the entering through the entrance slit 18 into the combustion chamber 1 1 incoming air or exhaust air, through an end-side cover 61 of the air or exhaust air inlet openings 54, the tangential flow may be favored.

In a principle, regardless of the other configuration of the wall 43 or wall construction 43 and / or of the foot-basic flow-through with respect to z. B. manufacturing technology advantageous, but in combination with other design features particularly advantageous embodiment of

Burner cone 06 is this in the circumferential direction by a number of individual, in

Circumferential direction all or in groups z. B. material or form-fitting connected planar segments, z. B. guide sheets, in particular flat sheet strips, formed, wherein z. B. a curvature by an inclined impact of two adjacent

joined segments is effected. The all or group connected segments are z. B. in the region of the upstream end with, for example, the cone foot 46 and / or in the region of the downstream Brennerkonusendes

for example, with the closing element 53, z. B. a surrounding the opening end plate 53, - in particular material or form-fitting - connected. The

End plate 53 may be designed for stiffening. In the funnel-like opening cone section has the wall 43 and wall structure 43 in the circumferential direction a plurality of obliquely in the longitudinal direction of the burner 04 against the axial direction of the burner 04 extending planar segments, for. B. flat sheet strip on, which forms viewed in cross section chordal extending peripheral portions.

In a z. B. manufacturing technology advantageous embodiment for a number n of wall sections 43.1; 43.2; 43.3; 43.4 comprehensive embodiment are the

Wall sections 43.1; 43.2; 43.3; 43.4 itself in the circumferential direction by a number m of individual segments 43.1 x; 43.2x; 43.3x; 43.4x (see eg Fig. 7b), with x = 2 to m, m e IN, m> 1, z. B. m> 3, in particular n> 5). The m segments 43.1x; 43.2x; 43.3x; 43.4x are with each other and in the region of the upstream end with, for example, the cone foot 46 and / or in the region of the downstream

Brennerkonusendes with, for example, a closing element 53 - in particular material or form-fitting - connected.

For the o. G. advantageous case of the sheath segments 43.1; 43.2; 43.3; 43.4 formed in a closed profile radially symmetrical cone sheath trained

Wall sections 43.1; 43.2; 43.3; 43.4 include the n shell segments 43.1; 43.2; 43.3; 43.4, for example, a truncated pyramid in turn segments 43.1x; 43.2x; 43.3x; 43.4x, where z. B. for the inclination of the partial surfaces to the inclination of

Pyramid faces mentioned applies. The cone shell is then essentially - d. H. if necessary, plus the above-mentioned slight addition in

Circumferential direction - through the shell segments 43.1; 43.2; 43.3; 43.4 of an I = n ^* m

Side surfaces having regular or irregular truncated pyramid with I same or at least partially geometrically distinctive

Pyramidal pinnacles formed.

In a basically independent of the other embodiment of the wall 43 or wall construction 43 and / or from the fußgrundseitigen Durchströmbarkeit and / or by a Verwirbelungshilfe described below with respect to z. B.

flow-wise advantageous, but in combination with others mentioned

Design features particularly advantageous embodiment of the burner cone 06, the wall 43 and wall construction 43 in its inner wall enclosing area of possibly tangential air inlet openings 54 different axial air or exhaust air inlet openings 56; 57 include, which as z. B. round holes 56 or formed as a slit-like profile recesses 57 are formed and at least by fluid with a purely radially to the symmetry axis S directed flow direction can be flowed through. Both types of air or exhaust air inlet openings 56; 57 may be provided. Furthermore, exhaust air inlet openings 56; 57, preferably slit-like exhaust air inlet openings 57, with edge-side outwardly spread part covers, 58, z. B. flaps 58 may be provided. For example, these flaps 58 may be substantially the shape of the subject

Exhaust air inlets 56; 57 correspond and for adjusting the passing Luftbzw. Abluftstromes changeable in the inclination to the surrounding closed lateral surface, z. B. at the on one side of the exhaust air inlet opening 56; 57 edge of the flap 58 existing connection bendable be.

The radial air or exhaust air inlet openings 56; 57 in the wall 43 or

Wall construction 43 are effective as Zuluftinjektoren and wear in addition

on the inside wall side for forming the air cushion or basket and / or for the supply of oxygen.

Basically independent, advantageous in combination of one or more of the above advantageous design features of the burner 04 is the execution of the turbulence of the outside on the burner 04 flowing past fluid stream, in particular exhaust air stream 02, favoring embodiment of the viewed in the axial direction of the burner 04 downstream end of the cone with several out through the frontal Contour of the one or more part cone jacket 43 surrounding the premix chamber and possibly the cover 61 protruding in the plane of the outlet opening 13 of the burner cone 06 into the space surrounding the burner cone 06, in particular into the inlet gap 18 downstream of the downstream Combustion chamber 1 1, reaching in and in

Circumferential direction of the burner cone 06 spaced from each other first and / or second flow obstacles 59; 63; 64; 66. These can basically be formed or fastened directly in the region of the front end on the wall of the wall 43 forming the cone shell or wall construction 43 itself.

The flow obstacles 59; 63; 64; 66 have the function to effectively mix the hot combustion gases from the flame with the supply air flowing outside the burner 04 through the entrance gap 18 into the combustion chamber 1 1. The inclined or just to the plane of the outlet opening 16 extending, z. B. as a guide vanes 59; 63; 64; 66 trained flow obstacles 59; 63; 64; 66 disruptively disturb the air flow passing through the entrance slit 18 and / or the essentially rotationally symmetric conical flow in the burner cone 06 and with this the substantially

rotationally symmetrical flame and thereby mix the gas streams from the burner interior and the entrance slit 18th

In an advantageous, for. B. in combination with the fan-like embodiment particularly advantageous embodiment of the burner cone 06, are out of the profile outwardly outstanding flow obstacles 59; 63; 64; 66 formed as part of the burner cone 06 at the downstream end final end plate 53 at this or attached to this form or cohesively.

Formed on the cone jacket or on the end plate 53 or fastened

Flow obstacles 59; 63; 64 are z. B. as a guide vanes 59; 63; 64 off

Flat sheet material formed, which is flat or at least a flat portion are executed, with the or at least one of its planar portions preferably inclined to the plane perpendicular to the axial plane of the

Outlet opening 16 are arranged. By way of example, the guide vanes 59; 63; 64 executed flow obstacles 59; 63; 64 at one of its sides at the edge of the end plate 53 so connected or connected so that they are more or less bend to adjust the turbulence.

By way of example, first, designed as a planar guide vanes 59 obstacles 59 with an edge at an edge portion of the tangential air or

Exhaust air inlet openings 54 may be arranged on the front side terminating portion of the cover plate 62.

Instead or in addition, second ones may be executed as planar guide vanes 59

Flow obstacles 63; 64 with an edge at an edge portion of the wall 43 and wall construction 43 in the region of the wall sections 43.1; 43.2; 43.3; 43.4 covering portion of the cover plate 62 may be arranged.

Guide vanes 59; 63; 64, in particular the first guide vanes 59, can in principle all point away from the plane of the outlet opening 16 downstream or downstream, or preferably to a part upstream and to the other part downstream. Guide vanes 59; 63; 64, in particular the second guide vanes 63; 64 can be seen as a pair of guide vanes 63, 64 viewed in the circumferential direction on both sides of a radially outward circumference of the

Cover plate 62 outreaching section 66 may be arranged, wherein z. B. one away from the plane of the outlet opening 16 downstream and the other upstream.

The above device 01 for thermal aftertreatment comprises the burner 04 in one of the abovementioned embodiments with one or a combination of several of the features highlighted above as being advantageous. In a further development of the device 01, the combustion chamber 1 1 in its interior a Verwirbelungseinnchtung 67 attributable to the chamber, for example, a baffle plate 67 on. Trained as baffle 67 Verwirbelungseinnchtung 67 extends z. B. parallel to the plane of the outlet opening 16 of the burner 04 and substantially centric to the axial direction of the burner 04th

LIST OF REFERENCE NUMBERS

01 device

 02 fluid flow, exhaust air flow, raw gas flow

 03 fuel flow

 04 burner, cone burner

05

 06 Burner cone

 07 fuel supply, fuel nozzle

 08 clean gas flow

08 'clean gas flow

 09 raw gas space

10

 1 1 combustion chamber

 12 Plant, production and / or processing plant, furnace

13 exit opening (06)

 14 outlet opening (1 1)

15

 16 outlet opening (1 1)

 17 combustion chamber wall

 18 entrance slit

 19 raw gas inlet

20

 21 flow cross section

 22 combustion chamber wall

 23 cover, outer cover

 24 heat exchangers

25

26 pipe (24) Collection and discharge space

Clean gas outlet

Bypass guide control element, flap

gas subsidies

Device for heat recovery

Adjusting means, actuator heat exchanger

Heat transfer fluid flow, heating fluid circulation

Adjusting means, actuator

Control element, flaps fireplace

premix

Wall, wall structure

Fuel outlet foot section, cone foot, flange, flange mounting, flange

execution

Cone bottom guide element, guide plate

execution

Graduation element, graduation plate

Air inlet, exhaust air inlets, tangential 56 exhaust air inlet

 57 exhaust air inlet

 58 Part cover, flap

 59 Flow obstacle, guide vanes

60

 61 cover

 62 edge

 63 Flow obstacle, guide vanes

 64 Flow obstacle, guide vanes

65

 66 Flow obstacle, guide vanes

 67 Swirling device, baffle plate

68 support elements

K1 circle line

 K1 circle line

 M1 truncated cone jacket

 M2 truncated cone jacket

 S symmetry axis

u1 perimeter

u2 perimeter

u3 perimeter

u4 Circumference φ Inclination angle, more actual, more effective

Φ1 inclination angle

 Φ2 inclination angle

φ ^* inclination angle, middle one

Claims

 claims

1 . Device for the afterburning of exhaust air with a burner (04) having a fuel nozzle (06) which is to be treated with at least its burner cone (06) in a raw gas space (09) in an exhaust air stream (02) from an upstream air Appendix (12) protrudes, wherein the burner cone (06) is surrounded by exhaust air and inside a Vormischkammer (42), wherein the burner cone (06) surrounding the premixing chamber (42) one or more part wall (43) with one or more

 Wall portion (43.1; 43.2; 43.3; 43.4) and the fuel nozzle (07) comprises an opening of at least one fuel outlet (44) for discharging fuel into the premixing chamber (42) and at least at the height of the at least one fuel outlet (44) through the wall is surrounded by the burner cone (06), and wherein the premixing chamber (42) outwardly bounding wall (43) has a structure, so that formed in its interior premixing chamber (42) on at least one conical longitudinal section symmetrical to a the axial direction of the Burner (04) defining axis of symmetry (S) funnel-shaped in the downstream direction, characterized in that the burner (04) in a fuel nozzle (07) and / or the at least one fuel outlet (44) surrounding the front Fußgrund_ (49) of Brennerkonus ( 04) one or more orifices of one or more from the burner (04) surrounding the raw gas space (09) in the Vormischkamme r (42) leading

 Having bushings (48) through which exhaust air from the burner (04) surrounding the raw gas space (09) with an axial or predominantly axial

 Flow direction, d. H. a relative to the radial component larger axial flow component, enters the premixing chamber and / or can occur.

2. Apparatus according to claim 1, characterized in that in the circumferential direction a plurality of bushings in a region of the bottom of the foot (49) are provided, extending in a direction perpendicular to the axis of symmetry (S) extending plane outside projecting into this plane, the one or more mouths of the at least one Brennstoffauslasses (44) enveloping circumferential line and within the axial height of the bushings (48) extending wall (43) and or in a foot section at axial height or axially upstream of the

Fuel nozzle end are provided.

Apparatus according to claim 1 or 2, characterized in that the foot base (49) by the cone interior facing side of a kind of as

End ring or spoke ring trained cone foot (46) is formed, in the circumferential direction of the fuel nozzle (07) considered a plurality of predominantly extending in the axial direction and / or a predominant axial flow permitting through-passages (48).

Apparatus according to claim 1, 2 or 3, characterized in that the Fußgrund (49) frontally bounding Konusfuß (46) in the manner of a flange (46) is executed, which releasably connected to the fuel nozzle (07) or one of these upstream pipe section arranged attachment (47) is connectable and / or which at a radial distance from the wall of the burner nozzle (07) carries the one- or multi-part wall (43) of the burner cone (06) and / or in the region between the wall of the burner nozzle (07) and Wall (43) of the burner cone (06) comprises the predominantly axially extending and / or predominantly in the axial direction through-flow ducts (48).

Apparatus according to claim 1, 2 or 3, characterized in that the

Foot base (49) by an all-open on spokes-like support elements gap between the upstream end of the wall (43) and the fuel nozzle (07) at the axial height or axially upstream of the

Fuel nozzle end is formed. Apparatus according to claim 1 or 2, characterized in that the foot base (49) is formed by an all-round gap between the upstream end of the wall (43) and the fuel nozzle (07) at the axial height or axially upstream of the fuel nozzle end.

Apparatus according to claim 1, 2, 3, 4, 5 or 6, characterized in that on a circular line, with respect to the axis of symmetry (S) radially further inward than the conical interior-side mouth of the one or more base-side passages (48), however with respect to the axis of symmetry radially further outward than the opening of the at least one fuel outlet (44), a continuous or partially full or a partially interrupted multi-part guide element (51) radially between the at least one

Fuel outlet (44) and the at least one passage (48) is arranged.

Apparatus according to claim 1, 2, 3, 4, 5, 6 or 7, characterized in that the burner cone (06) in at least one longitudinal portion of the funnel-shaped opening cone longitudinal section of the wall (43) a plurality of tangential

Inlet openings (54) for a tangential air inlet of the exhaust air surrounding the burner cone (06) into the premixing chamber (42).

Apparatus according to claim 8, characterized in that the tangential inlet openings (54) are spaced apart in the circumferential direction and / or on the outside of the wall (43) radially from the in

Seen in the circumferential direction, the preceding circumferential circumferential portion rise and / or are formed as gap-shaped or slot-shaped openings extending in the axial direction and / or extend over at least the length of the funnel-shaped opening of the cone longitudinal section.

10. The device according to claim 1, 2, 3, 4, 5, 6, 7, 8 or 9, characterized in that the wall (43) of the burner cone (06) at least in the funnel-shaped cone longitudinal section by a plurality n radially symmetrical order the axial direction forming the axis of symmetry (S) is fan-shaped and / or wall sections (43.1; 43.2; 43.3; 43.4) are arranged in a circle around respective axes of rotation not coinciding with each other or with the axis of symmetry (S).

1 1. A device according to claim 8, 9 or 10, characterized in that the

 tangential inlet openings (54) by the fan-like arrangement of a

 A plurality of wall sections (43.1; 43.2; 43.3; 43.4) are formed and / or the wall sections (43.1; 43.2; 43.3; 43.4) in a number of n wall sections (43.1; 43.2; 43.3; 43.4) as n N-shells, in particular n conical shells, are formed.

12. The device according to claim 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 1 1 or 12, characterized

 characterized in that the wall (43) of the burner cone (06) at least in the funnel-shaped cone longitudinal section by a number n of more than two or a number of at least four radial symmetry about the

 Symmetry axis (S) forming axial direction fan-shaped and / or twisted arranged wall sections (43.1; 43.2; 43.3; 43.4) is formed and / or in at least one longitudinal portion of the funnel-shaped opening

 Konuslängsabschnittes the wall (43) more than two or at least four tangential inlet openings (54) for a tangential air inlet of the

 Burner cone (06) surrounding exhaust air into the premixing chamber (42) into it.

13. The apparatus of claim 10, 1 1 or 12, characterized in that with respect to the axis of symmetry (S) by the respectively adjacent

Wall sections (43.1; 43.2; 43.3; 43.4) covered in the circumferential direction Continue or overlap angle sections at least gap-free.

14. Device according to claim 10, 1 1, 12 or 13, characterized in that the wall sections (43.1; 43.2; 43.3; 43.4) in turn in the circumferential direction by a number m individual, together to form the respective wall portion (43.1; 43.3; 43.4) of subsequent segments (43.1 x; 43.2x; 43.3x; 43.4x).

15. The apparatus of claim 8, 9, 10, 1 1, 12, 13 or 14, characterized in that the tangential inlet openings (54) are such that only an air flow can pass through this in the cone interior, which based on the axis of symmetry (S) does not represent a purely radial flow, but at least comprises a tangential component of motion.

16. The apparatus of claim 8, 9, 10, 1 1, 12, 13, 14 or 15, characterized

 characterized in that the tangential inlet openings (54) between each two in the circumferential direction of the burner cone (06) adjoining n

 Wall sections (43.1; 43.2; 43.3; 43.4) are formed by these formed in the form of cone segments of a cone with a closed outer peripheral line, but each with respect to the closed outer peripheral line forming arrangement about the axis of symmetry (S) in each case equally spaced axis in a same Direction of rotation and / or a same angle are arranged twisted.

17. The apparatus of claim 1, 2, 3, 4, 5, 6, 7, 8, 9, 19, 1 1, 12, 13, 14, 15 or 16, characterized in that the fuel nozzle (07) and the upstream The torch cone (06), in particular a foot section of the burner cone (06), the fuel nozzle (07), is arranged at the end of the burner cone (07) in the axial direction and overlapping or at least continued without interruption. surrounds at least at the level of at least one fuel outlet.

18. The apparatus of claim 1, 2, 3, 4, 5, 6, 7, 8, 9, 19, 1 1, 12, 13, 14, 15, 16 or 17, characterized in that all or more wall sections (43.1 ; 43.2; 43.3; 43.4) of a multi-part wall (43) on at least the opening longitudinal cone section in the form of shell segments (43.1; 43.2; 43.3; 43.4) of a radially symmetrical profile closed in profile

 Truncated cone or L-side truncated pyramid shell are formed, and which are arranged around respective axes, which extend on a common, concentrically the symmetry axis (S) surrounding the cone or cylinder surface in the longitudinal direction, twisted with the same direction of rotation and angle of rotation.

19. The apparatus of claim 1, 2, 3, 4, 5, 6, 7, 8, 9, 19, 1 1, 12, 13, 14, 15, 16, 17 or 18, characterized in that the burner cone (04 ) in its opening burner cone section or at least part of it

 Burner cone portion having an effective inner taper with an inclination angle (φ; 1) of the cone shell against the symmetry axis (S) of 5 ° to 15 °.

20. The device according to claim 1, 2, 3, 4, 5, 6, 7, 8, 9, 19, 1 1, 12, 13, 14, 15, 16, 17, 18 or 19, one of the preceding claims, characterized characterized in that the premixing chamber (42) on the shell side outwardly delimiting inner wall (43) of the burner cone (06) is formed at least in the funnel-shaped cone longitudinal section in shape and structure for receiving a maximum virtual Kegelstupfes largest cross-sectional profile, the at least two spaced apart in the axial direction of the cross-sectional planes at least three circumferentially spaced locations on the wall (43), wherein the wall (43) of the burner cone (06) is formed so that this maximum virtual Kegelstupf in a plane including the symmetry axis Cone angle from 18 ° to 30 °, in particular from 20 ° to 26 °, preferably from 23 ° ± 1 °, forms.

21. The device according to claim 1, 2, 3, 4, 5, 6, 7, 8, 9, 19, 1 1, 12, 13, 14, 15, 16, 17, 18, 19 or 20, characterized in that the wall section (43.1; 43.2; 43.3; 43.4) of the burner cone (06) delimiting the premix chamber (42) in its funnel-shaped conical longitudinal section in terms of its shape and structure with respect to the symmetry axis (S) in FIG

 Circumferentially varying conicity are formed, a in this funnel-shaped cone longitudinal section in the longitudinal direction of the burner inside the wall portion (43.1; 43.2; 43.3; 43.4) in the longitudinal direction of the burner (04) extending and most inclined to the axial direction of the generatrix a tilt against the axial direction with an angle of inclination (* 2) of at most 16 °, advantageously not more than 15 °, in particular not more than 13 °, and / or a conical longitudinal section opening in this funnel shape in the longitudinal direction of the burner cone inside the wall section (43.1; 43.2; 43.3;

 Lengthwise of the burner (04) extending and least against the

 Axially inclined generating line a slope against the axial direction with an inclination angle of at least 8 °, advantageously at least 9 °, in particular of at least 10 °, forms.

22. The apparatus of claim 1, 2, 3, 4, 5, 6, 7, 8, 9, 19, 1 1, 12, 13, 14, 15, 16, 17, 18, 19, 20 or 21, characterized in that in the area of its downstream end, the burner cone (06) encloses an end opening (13) leading to the burner cone (06) in the circumferential direction, an outlet opening (13) leading from the cone interior, and with its inner peripheral line delimiting the outlet opening (13) in a plane perpendicular to the axial direction extending end element (53), which in an inner and / or outer edge region, in particular collar-like, radially beyond the through the

Sheath course of the wall (43) given on the front side profile in the Burner cone (06) surrounding space and / or in the space enclosed by the closing element (53) space.

23. Device according to claim 1, 2, 3, 4, 5, 6, 7, 8, 9, 19, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21 or 22, characterized in that the burner cone (06) in the region of its downstream end with several of which through the

 Sheath course of the wall (43) given at the front profile in the

 Burner cone (06) at its downstream end on its

 Outside surrounding space extending and in the circumferential direction of the burner cone (06) spaced from each other flow obstacles (59; 63; 64; 66) is formed.

24. The device according to claim 23, characterized in that a plurality or

 all flow obstacles (59; 63; 64; 66) are arranged on a closing element (53) according to claim 20 and / or are formed as guide vanes (59; 63; 64) of flat sheet material which are flat or have at least one flat section, wherein they are arranged with the or at least one of its planar portions inclined to the plane perpendicular to the axial direction of the outlet opening (16).

25. The apparatus of claim 1, 2, 3, 4, 5, 6, 7, 8, 9, 19, 1 1, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23 or 24, characterized in that the burner (04) with at least its burner cone (06) in an exhaust air stream (02) from to

 treating, a hydrocarbon cargo leading exhaust air from an industrial plant (12) protrudes.

26. The apparatus of claim 1, 2, 3, 4, 5, 6, 7, 8, 9, 19, 1 1, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24 or 25, characterized in that the burner cone (06) is designed with tangential Lufteintriffsöffungen (54).

27. The apparatus of claim 1, 2, 3, 4, 5, 6, 7, 8, 9, 19, 1 1, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25 or 26, characterized in that a raw gas inlet (19) is provided, via which the device to be cleaned fluid or exhaust air stream (02) can be supplied as a raw gas stream (02).

28. The apparatus of claim 1, 2, 3, 4, 5, 6, 7, 8, 9, 19, 1 1, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26 or 27, characterized in that upstream of the raw gas space (09) in Rohgasweg a heat exchanger (24) is provided, through which a heat exchange between already treated, a combustion chamber (1 1) leaving hot clean gas and a through Exhaust air from the upstream plant (12) formed and still treated raw gas takes place or can take place.