DE1401868A1 - Circulation burner - Google Patents

Description

'g 3768 / W Esetn, the 157 "fiai 1961

Wistra furnace construction company with limited liability Dusseldorf-Heerdt, ftiesenatraße 134

Circulation burner

The invention relates to a circulating burner with a combustion chamber, from which the flue gases arising under pressure emerge at high speed.

It is known to burn fuel and air in a combustion chamber that has an outlet opening of this type is provided that the breath gases arising under pressure in the combustion chamber at high speed aua the Exit outlet opening. Due to the great energy of the exiting Flue gas flow, a vigorous circulation is achieved by sucking in flue gases from the furnace chimney, so that the fans otherwise required for circulating the furnace atmosphere, the high temperatures are not able to cope with it.

With a complete combustion in the combustion chamber Generates temperatures that go to the limit of the temperature resistance of highly refractory bricks and this «even over

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■ ohreiten can »βο that a frequent renewal of the lining is necessary. The well-known circulation burner can therefore the combustion agents are not supplied preheated without the combustion chamber, as is the case with conventional burners, because "this resulted in even higher temperatures"

The object of the invention is now to create a circulation burner, temperatures are generated in deaaen combustion chamber which are below the limit of temperature resistance »at dam but still the advantages of a suction and circulation of the Furnace atmosphere and an increase in temperature due to preheating of the combustion agent.

The invention consists in the combustion in two stages to ensure that the temperature in the combustion chamber is kept below the limit permissible for the refractory masonry and the complete combustion takes place in the burner jet emerging from the combustion chamber by supplying the quantity of air or gas to the burner jet.

Duron the limited combustion within the combustion chamber, a temperature that is harmless to the refractory lining of the combustion chamber can be achieved, but this is due to the Combustion of the major part of the burnt toffee creates a pressure in the combustion chamber that is sufficiently high for a high speed, so that the mixture is at a high speed exits from the outlet nozzle of the combustion chamber.

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1401860

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The idea of invention can be carried out in various ways. According to a feature of the invention, two combustion chambers arranged next to one another, one with air and one with _; Others operated with a lack of gas of such compositions, i.e. the mixtures emerging from both combustion chambers and resulting in incomplete combustion are brought together outside the burners and burn completely in the burner jet.

The * combustion chambers can be used in such an implementation of the invention in one or burns in two housings

j eeLn, wherein the outlet openings are so slightly inclined next to each other that the exiting mixtures without

'f * | beatliche inhibition of the speed in practically glelohge . 'To be mixed with the faint ray.

a further feature of the invention is only a burning « used, in which the combustion with air or gas over-

^! tohufl takes place, and the supply for the residual air or the

In the area of the Brennkaromer-AustrlttsdU.se parallel or eohrag is arranged to do so, so that the remaining combustion de · incompletely burned vegetables in the combustion chamber the burner jet emerging from the combustion chamber takes place.

The residual air or residual gas feed is after another Feature of the invention as the ring jacket surrounding the combustion chamber formed whose surrounding the combustion chamber outlet nozzle

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1401188

May 15, 61

Nozzle openings preferably at a slight angle to the exit nozzle the combustion chamber. This achieves a concentric supply of the combustion agent to be supplied for the residual combustion and a high level of preheating with the aim of increasing the jet speed.

Such a preheating with concentric supply of the remaining combustion oil quantity is according to a further feature of the Invention also achieved in that the feed for the fiestluft or that Reetgae is essentially the combustion chamber interspersed concentrically.

The combined mixtures burn out completely with the remaining amount of fuel within the elongated mixture jet, with the furnace atmosphere "• being sucked in when the mixture emerges from the combustion chambers, so that the outer Layer of burner radiation is surrounded by flue gases of low temperature and dair.it is vermisoht. As a result, the Tip of the burned out mixture tralile on impact Masonry or raw material experience a corresponding drop in temperature that is harmless to the masonry or material.

According to a further feature of the invention are the combustion chambers designed or provided with such internals that a swirl or vortex-shaped movement of the mixture in each combustion

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May 15, 61

Chamber arises, but nevertheless the gemieche appear in the same direction or in only a slight twisting motion.

This creates an intimate mixing within the combustion chambers obtained, with a leiolte 4circular movement of the two emitted chemical rays the mixing of the same »for the Residual combustion supported.

According to a further feature of the invention, the outlet openings can be regulated by regulating devices, so that the speed the emerging beam is adjustable and independent of the heating power is kept constant at a maximum value that is given by the pressure and temperature in the combustion chamber or can be lowered as required.

Finally, according to the invention, a plurality of exit openings can also be arranged in order to achieve a broad, band-shaped burner jet.

The invention is illustrated in the drawing, for example.

Fig. 1 shows a vertical section through a circulation burner designed according to the invention with two Combustion chambers.

Pig. 2-5 represent further embodiments with only one

. Combustion chamber and residual air or gas supply.

BATH ORIGINAL

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• *

At the in? Ig. 1 are shown in a · » unit of refractory masonry 1 provided housing 2 two combustion chambers 3 * 4 arranged, which gas axially through J · a · conduit 5, - 5a and air tangentially through each «in · line 6, 6a sugeftUur} becomes * Through the line 6 a restricted air «tight, ίi # through a shut-off device 7 adjustable, and through the line 6 * • In · overriding, also controllable · tangential air volume fed. Through the line 5, the combustion chamber 4 becomes a larger one and the line 5a of the combustion chamber 3 becomes a smaller one Gaamenge supplied. These quantities are each controlled by a control element θ adjustable.

Gas and air are swirled in the combustion chambers 3t 4 Mixed movement and according to the lack of air in chamber 4 and lack of air in chamber 3 incompletely burned. Gas and air in the two combustion chambers 3, 4 are matched in their total amount in such a way that the incompletely burned mixtures emerging from the nozzles 9 10 bring together a complete combustion *

The merging of the mixtures emerging from the openings 9t 10 is caused by the fact that the outlet openings have a slight inclination towards each other, but this is only so slight that the mixtures are brought together only after their exit due to the directly adjacent outlet openings, ύ \ »* Τ a practically constant direction of the Geaioohee is maintained and no substantial inhibition of the high Geachwindigkalt, with the the two mixtures emerge takes place. "

BATH ORIGINAL

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May 15, 61

Avoidance of excessive twist-shaped occupancy in the outer openings 9, 10, which would counteract a high velocity of the air jets, can be arranged vox · ds η outlet openings 9 »10 k ^ eutz- j &: - circular iiinc ^ --- ^ 11, the ao formed "■; .- '*, that the ev. & ts: -' ~ ■ -:.: 'r :. Are Qemischetrsh-X "s directed substantially axially or - ⁴ ^ only slight movement drallförsaigg aufweiaen ₅ about the Vbt · -x ■■ h \ ,, _e outside the combustion chamber ohn" wea "f * vi.liehe He amung? £: - · ■■■ ■■. ·; .. ^? gi «-x achieve.

sind en ami Msyiirittsoffnungei :) ■■; ■■ '■ viieber * 2 ;, durcfci ' Λ * ?. ^ eI wu ': - ..: -icuiitts ^ r- ^ ii.;:; ■■ - ~: ■ - arhöhts

eataprechende abaeblag aiae ΐ · 3 ^ ύ .. _Α .;. _ώ 4 - ^■: .τ ".alen la regards management of their cooperation and Tara, s iu. . ~; R ie i

In the embodiment shown in FIG. 2, the incomplete combustion, for example with a lack of air, takes place in only a combustion chamber 14 «The amount of reed air is passed through a duct 16 to the burner jet emerging from the exit nozzle 15 The furnace masonry 17 in βohrag directed to the burner beam Beam brought out.

As can be seen from FIG. 3, the feed channel 16 can also lie directly next to the combustion chamber 14, the air being preheated from the combustion chamber 14.

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Be the one in Ui _1;. 4 shown Λ uef Uh approximate shape, the Kest ~ verbrennungeluft fed 17 at 1Ö by a combustion chamber 14 surrounding Sing casing and passes through the combustion chamber Auatrittsdüse \ b surrounding nozzle 19 from the annular chamber 17 from _s wqbei the .uufi "with the Lnuchg as-fuel gas mixture is vermisch · from the DU.bq 15 'of Gasiiberschuß d ^ r combustion chamber in Isng ™ geatreclitem and; rsiil reaches the full burning ^of.;.

The Hestluftsufführung can also, as in Big. 5 shown, axially penetrate the combustion chamber Ii so that the flue gas over-8Chußg8Egeinio '". h the Düoe 20 surrounding the air supply 16 the Brennkauinerdiise 15 sustr.-i here a mixture he follows.

809ÖÜ5 / ÜÜ89

Claims (9)

H 3768 / w Eeeen, May 15, 1961 claims 1. Procedure for operating circulating burners with combustion chambers, from which the Hauchgaee produced under pressure with high Speed occurs, characterized by a two-stage Combustion in such a way that the temperature in the combustion chamber is below that permissible for the refractory masonry Limit "is held and die'e complete combustion in that • Burner jet emerging from the combustion chamber through feed the remaining air or gas amount to the burner jet. 2. The method according to claim 1, characterized in that one of two combustion chambers arranged next to one another is included Air and the other is operated with a lack of gas of such a composition that the exiting from both combustion chambers, Mixtures created in incomplete combustion are excluded? half of the combustion chambers are brought together and burn completely. 3. Device for performing the method according to claim 2, characterized in that the combustion chambers (3, 4) together are arranged in one or separately in two housings (2) and the outlet openings (9, 10) are thus directed slightly obliquely lie next to each other that the emerging mixtures - 10 - BATH ORIGINAL 80 980 5/00 89 May 15, 61 ■ - 10 - without significant inhibition of the speed in Praktiaoh * rectified beam are mixed. 4. Device for performing the method according to claim 1, characterized in that the feed for the reed air or the residual gas in the area of the combustion chamber outlet unit is arranged parallel or obliquely to this. 5. Apparatus according to claim 4, characterized in that the residual air or residual gas supply the combustion chamber as Ring jacket surrounds. 6. Apparatus according to claim 4 »characterized! that the reed air or residual gas supply passes through the combustion chamber essentially concentrically. 7. Device according to one or more of claims 3-6 » characterized in that the combustion chambers (3, 4) are designed or provided with such internals that a swirl or vortex, depending on the movement of the mixture, however, the mixture emerges in a directed jet or with only a slight twisting movement. 8. Device according to one or more of claims 3-7, characterized in that several outlet nozzles (8,9,15) are arranged. 9. Device according to one or more of claims 3-8, characterized in that the outlet openings (9, 10) are provided individually or jointly with regulating bodies. 80980 5/0089 ^ ^{0 OfllGi} NAL