EP0352342B1 - Brûleur pour des procédés de séchage ou de purification de gaz - Google Patents

Brûleur pour des procédés de séchage ou de purification de gaz Download PDF

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Publication number
EP0352342B1
EP0352342B1 EP88111991A EP88111991A EP0352342B1 EP 0352342 B1 EP0352342 B1 EP 0352342B1 EP 88111991 A EP88111991 A EP 88111991A EP 88111991 A EP88111991 A EP 88111991A EP 0352342 B1 EP0352342 B1 EP 0352342B1
Authority
EP
European Patent Office
Prior art keywords
fuel gas
combustion
air
burner
gas
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP88111991A
Other languages
German (de)
English (en)
Other versions
EP0352342A1 (fr
Inventor
Gerardus C. Dielissen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Maxon International BVBA
Original Assignee
Maxon International BVBA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Maxon International BVBA filed Critical Maxon International BVBA
Priority to DE8888111991T priority Critical patent/DE3868406D1/de
Priority to ES198888111991T priority patent/ES2030122T3/es
Priority to AT88111991T priority patent/ATE72605T1/de
Priority to EP88111991A priority patent/EP0352342B1/fr
Publication of EP0352342A1 publication Critical patent/EP0352342A1/fr
Priority to US07/657,342 priority patent/US5057008A/en
Application granted granted Critical
Publication of EP0352342B1 publication Critical patent/EP0352342B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details
    • F23D14/72—Safety devices, e.g. operative in case of failure of gas supply
    • F23D14/76—Protecting flame and burner parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/34—Burners specially adapted for use with means for pressurising the gaseous fuel or the combustion air
    • F23D14/36—Burners specially adapted for use with means for pressurising the gaseous fuel or the combustion air in which the compressor and burner form a single unit

Definitions

  • the invention relates to a burner for drying and gas cleaning processes of flue gas and similar gases with fuel gas distributors, which have a number of fuel gas outlets, with an air distributor for supplying the combustion air, which has a passage plate with different passages for the combustion air, with a fuel gas supply and a fuel gas tube, which are arranged in the housing supplying the combustion air flow.
  • EP-A-0 053 454 relates to the specific arrangement of the air passages, these having different diameters, so that in each case sufficient combustion air is available, taking into account the flow velocity of the fuel gas.
  • This well-known burner is suitable for normal drying and flue gas cleaning processes as well as similar processes if there is enough oxygen in the air flow. If this is not the case and a high content of H2O and CO2 is added, the burner fails or it works very unsatisfactorily. Such conditions occur, for example, in power plants in which the fuel gas has to be heated again before it passes through a catalytic converter in order to reduce the NOx content.
  • a gas burner is known, to the nozzle of which there are parallel extension walls or plates.
  • the flue gas is referred to as fuel gas because it has to fulfill this function in the burner.
  • the invention has for its object to provide a burner that works perfectly even under unfavorable conditions, especially with high CO2 contents of combustion or flue gas.
  • each fuel gas distributor is surrounded by a combustion air flow channel, which is formed by an angle iron arranged at a distance and on the outside from the fuel gas distributor, which has two flanges, one of which is the fixing flange for fastening to the fuel element or the housing and the the extension plates discharging inert gas are used, while the free-standing flange runs and is arranged in such a way that the partial flow is led around the fuel gas distributor and directed again towards the flame.
  • the specific routing of the combustion air flow in the area of the fuel gas distributors has a multiple effect in that the fuel gas distributors are advantageously cooled by the combustion air flow, and on the other hand, since the flame is protected from the inert gas or the post-burned flue gas by the surrounding combustion air flow, i.e. no longer in the Area of the burner.
  • the extension plates ensure surprisingly simply and safely that the flame is protected from the asphyxiation effect by the inert gas, so that advantageous conditions for complete combustion are ensured.
  • These extension and extension plates create a kind of chimney effect, so that the inert gas is prevented from striking back. Above all, as a further effect, a limitation of the NOX production is surprisingly ensured, since the combustion takes place in two stages.
  • the combustion takes place in the area of the fuel gas outlets and secondly in a kind of afterburning where the combustion air flow is returned to the area of the flame after the fuel gas distributor has been flushed.
  • the present invention it is surprisingly possible with the present invention to heat combustion gases with a high proportion of CO2 and H2O to such an extent, even under unfavorable conditions in the area of power plants, that they can then be passed over the catalyst or brought into contact with it, to safely release other pollutants so that optimally cleaned flue gases can be released into the atmosphere.
  • the angle irons are provided to arrange the extension plates and to achieve a favorable design of the combustion air flow duct.
  • angle irons are arranged and guided in such a way that the combustion air flow is directed around the fuel gas distributor and then air is introduced from the front as a second combustion stage into the area of the flame.
  • the angle iron is equipped with a mounting flange and a free-standing flange, which protrude opposite each other from the web.
  • the housing has a side opening closed by a detachably attached plate. At the same time, this side opening also serves as an inspection opening in order to be able to carry out any necessary maintenance work in the area of the burner.
  • the fuel gas pipe is fixed in the housing by at least one spacer plate, which is also designed as a diffuser plate.
  • the diffuser effect is generated in particular in the direction in order to lead the combustion air close to the fuel gas pipe and the other devices and to have a uniformly mixed combustion air available at the same time.
  • the actual diffuser plate is then in the area of the passage plate, as can also be seen from the prior art.
  • the invention additionally provides that the angle irons are detachably and displaceably arranged transversely to the longitudinal direction on the burner body.
  • the combustion air flow channel which partially encompasses the fuel gas distributors, can then be changed so that more or less combustion air flows through this channel, in order to then be directed at the end into the flame.
  • the free-standing flange of the angle iron can again have subdivisions or corresponding webs in order to specifically subdivide the air flow leaving the combustion air flow duct.
  • the free-standing flange of the angle iron is designed to be extendable. This allows the combustion air flow to be guided in a targeted manner, depending on how this is optimal for maintaining the flame. Either the free-standing flange is guided up to the corresponding front edge of the respective fuel gas distributor or even further, or it ends earlier, depending on whether an additional combustion or protection against inert gas is a major goal for the introduction of the additional combustion air flow.
  • a further possibility of producing a combustion air flow channel in a targeted manner is that of attaching the extension plates to the combustion air channel to the combustion gas distributors in a predetermined manner on the burner body.
  • the extension plates thus fulfill a double task, whereby they can also specify the size of the combustion air duct according to the circumstances by means of an appropriate arrangement, namely by means of a displaceable arrangement.
  • the extension plates are expediently to be provided with transverse webs in order to deflect the combustion air flow around the fuel gas distributor in the direction of the flame.
  • angle irons are held displaceably on the extension plates.
  • the angle iron thus forms the combustion air flow channel, the extension plates as such being able to be pushed more or less far to guide the heated air flow or the exhaust gas flow.
  • the angle irons can thus virtually fulfill the task of the extension plates in the lower area or form a system unit with the extension plates. An advantageous variation in all directions is thus achieved.
  • the passage plate with the corresponding passages for the combustion air is mounted just below the fuel gas outlets in the fuel gas distributors, the invention additionally providing here that the passage plate arranged in the area of the fuel gas outlets is detachably arranged on the inner flank of the fuel gas distributors.
  • the invention is particularly characterized in that a burner is created which can always be operated safely under unfavorable conditions, in particular with high proportions of CO2 and H2O.
  • a surprising multiple success is achieved by preventing the inert gas from striking back into the area of the burner flame, at the same time by arranging extension plates and by directing the combustion air flow.
  • the particular guidance of the combustion air flow leads to further effects in that cooling of the fuel gas supply devices is achieved and combustion in two stages, since the combustion air flow duct is arranged at a distance behind the passage plate for the combustion air and here again supplies combustion air to the flame.
  • a significant reduction in the NCX content of such gas is surprisingly ensured.
  • Existing considerable problems can be solved there, especially in the flue gas desulfurization of power plants and similar systems, whereby the previous structure of the burner can advantageously be integrated into the new development.
  • Fig. 1 shows the burner (1) referred to as a longitudinal burner, the burner body (2) being formed by a rectangular or square sheet metal housing, in which fuel gas distributors (3) lying opposite one another in the longitudinal direction are fixed to the side walls.
  • This fuel gas distributor (3) is connected to a fuel gas pipe (4) and the fuel gas supply (5) in order to ensure a uniform supply of the fuel gas.
  • the fuel gas emerges from the fuel gas distributors (3) in each case via fuel gas outlets (6, 7) arranged in the longitudinal direction, which are arranged on the inner flank (8) of the fuel gas distributors (3) or are provided there in the form of bores and which are arranged in such a way that that the escaping fuel gas is mixed intensively with the combustion air flow.
  • the required combustion air is fed through the air distributor (1o), for which purpose the correspondingly large housing (11) is provided, which at the same time carries the fuel gas distributor (3) in the upper area.
  • Combustion air channels are designated which run in such a way that a partial combustion air flow is led around the fuel gas distributor (3).
  • the combustion air required is usually removed from the power plant process for the design of the burner according to the invention, for example in order to heat the strongly CO2- and H2O-containing air streams again before they are fed to the catalytic converter.
  • the additional air supply device (13) shown in FIG. 1 is therefore only intended for exceptional cases in this sense.
  • the combustion air is evenly distributed through the housing (11) and then passed through the passage plate (14) through passages (15, 16) provided there into the area of the fuel gas distributor (3) or the fuel gas outlets (6, 7), in order here to give the targeted flame.
  • the combustion air flow is equalized beforehand by passage through the diffuser plate (17) in which corresponding bores (18, 19) are provided.
  • Influencing the flame in the area of the fuel gas distributor (3) is prevented by the extension plates (20, 21) on the side. Inert gas can therefore not flow into the area of the flame. Rather, the heated gas is removed after passing through the fuel gas outlets (6, 7) or the passage plate (14) in a targeted manner and without being influenced.
  • Fig. 2 shows the burner (1) in cross section, the combustion air flow with (23) and the branches branching off with (24, 25) are designated. According to the invention, these partial streams (24, 25) are passed close and past the fuel gas distributors (3), on the one hand to cool these fuel gas distributors (3) and on the other hand to be able to supply additional combustion air to the flame again behind the fuel gas outlets (6, 7). 2 shows the combustion achieved in two stages, which, due to its optimized design, brings about a significant and substantial reduction in the NOx content.
  • the spacer plate also has a diffuser effect, that is to say a targeted mixing and equalization of the air flow as such.
  • the partial flow (24 or 25) already mentioned above along the fuel gas distributor (3, 3 ') is achieved by forming a channel which is represented by an angle iron (32) arranged at a distance from the fuel gas distributor (3).
  • These angle irons (32) have two flanges, the fixing flange (33) for fastening to the burner body (2) or the housing (11), while the free-standing flange (34) extends and is arranged so that the partial flow (24 or 25) around the fuel gas distributor (3) and again directed towards the flame, so that the combustion is achieved in two stages.
  • the screw (35) is provided for the simultaneous fixing and fastening of the angle iron (32) and the extension plates (20, 21), the screw connection (35) with the holder (36) giving the possibility of either moving the angle iron (32) or the extension plates (20, 21) or both, depending on where and how a change in the combustion air duct (12) or the guidance of the exhaust gases is desired or necessary.
  • the individual parts such as angle iron (32) and extension plates (20, 21) are detachably connected to one another or to the housing (11) or burner body (2).
  • the passage plate (14) is also expediently fastened to the fuel gas distributors (3) by means of a screw connection (38) in such a way that a change is possible here.
  • the Passage plate (14) designed as a U-shaped longitudinal plate, the flanges (39) of which serve for releasable connection via the screw connection (38).
  • the passage plate (14) can be changed in position or replaced by another if necessary.
  • a push-on sleeve (40) is used to connect the fuel gas pipe (4) to the fuel gas supply (5) and thus to the actual burner (1). 4) a sufficiently secure seal and connection is created in the push-on sleeve (40).

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Drying Of Solid Materials (AREA)

Claims (8)

  1. Brûleur (1) pour des processus de séchage et de nettoyage de gaz de fumée et gaz similaires, avec des répartiteurs de gaz combustible (3) qui présentent une pluralité de sorties de gaz combustible (6, 7), avec un répartiteur d'air (10) pour l'amenée de l'air de combustion qui dispose de divers passages (15, 16) pour l'air de combustion par l'intermédiaire d'une plaque de passage (14), avec une amenée de gaz combustible et un tube de gaz combustible (4) qui sont disposés s'étendant dans le carter (11) d'amenée du courant d'air de combustion,
    caractérisé en ce que chaque répartiteur de gaz combustible (3) est entouré par un canal de courant d'air de combustion (12) qui est formé par une cornière (32) disposée écartée et du côté extérieur du répartiteur de gaz combustible (3) et qui présente deux ailes, parmi lesquelles l'aile de fixation (33) sert à la fixation au corps de brûleur (2) ou respectivement au carter (11) et des plaques de prolongement (20, 21) évacuant le gaz inerte, tandis que l'aile libre (34) s'étend de telle manière et est disposée de telle manière que le courant partiel (24, 25) est guidé autour du répartiteur de gaz combustible (3) et dirigé à nouveau en direction de la flamme.
  2. Brûleur selon la revendication 1,
    caractérisé en ce que le carter (11) présente une ouverture latérale (27) fermée par une plaque (28) montée amovible.
  3. Brûleur selon la revendication 1,
    caractérisé en ce que le tube de gaz combustible (4) est fixé dans le carter (11) par au moins une plaque d'écartement (30) qui est conformée pour servir simultanément de plaque de diffuseur (17).
  4. Brûleur selon la revendication 1,
    caractérisé en ce que les cornières (32) sont disposées amovibles et déplaçables transversalement à la direction longitudinale sur le corps de brûleur (2).
  5. Brûleur selon la revendication 1 ou la revendication 4,
    caractérisé en ce que l'aile libre (34) de la cornière (32) est réalisée allongeable.
  6. Brûleur selon la revendication 1,
    caractérisé en ce que les plaques de prolongement (20, 21) sont fixées sur le corps de brûleur (2), en précédant le canal d'air de combustion (12) par rapport aux répartiteurs de gaz combustible (3).
  7. Brûleur selon la revendication 1,
    caractérisé en ce que les cornières (32) sont maintenues déplaçables sur les plaques de prolongement (20, 21).
  8. Brûleur selon la revendication 1,
    caractérisé en ce que des plaques de passage (14) disposées dans la région des sorties de gaz combustible (6, 7) sont disposées amovibles sur le flanc interne (8) du répartiteur de gaz combustible (3).
EP88111991A 1988-07-26 1988-07-26 Brûleur pour des procédés de séchage ou de purification de gaz Expired - Lifetime EP0352342B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE8888111991T DE3868406D1 (de) 1988-07-26 1988-07-26 Brenner fuer trocknungs- oder gasreinigungsprozesse.
ES198888111991T ES2030122T3 (es) 1988-07-26 1988-07-26 Quemador para procesos de secado o depuracion de gases.
AT88111991T ATE72605T1 (de) 1988-07-26 1988-07-26 Brenner fuer trocknungs- oder gasreinigungsprozesse.
EP88111991A EP0352342B1 (fr) 1988-07-26 1988-07-26 Brûleur pour des procédés de séchage ou de purification de gaz
US07/657,342 US5057008A (en) 1988-07-26 1991-02-15 Line burner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP88111991A EP0352342B1 (fr) 1988-07-26 1988-07-26 Brûleur pour des procédés de séchage ou de purification de gaz

Publications (2)

Publication Number Publication Date
EP0352342A1 EP0352342A1 (fr) 1990-01-31
EP0352342B1 true EP0352342B1 (fr) 1992-02-12

Family

ID=8199136

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88111991A Expired - Lifetime EP0352342B1 (fr) 1988-07-26 1988-07-26 Brûleur pour des procédés de séchage ou de purification de gaz

Country Status (5)

Country Link
US (1) US5057008A (fr)
EP (1) EP0352342B1 (fr)
AT (1) ATE72605T1 (fr)
DE (1) DE3868406D1 (fr)
ES (1) ES2030122T3 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5662467A (en) * 1995-10-05 1997-09-02 Maxon Corporation Nozzle mixing line burner
DE19633004A1 (de) 1996-08-16 1998-02-19 Babcock Omnical Gmbh Kanalbrenner und Verfahren zum Aufheizen eines strömenden Gases
US6227846B1 (en) 1996-11-08 2001-05-08 Shrinkfast Corporation Heat gun with high performance jet pump and quick change attachments
ATE232284T1 (de) * 1996-11-08 2003-02-15 Shrinkfast Corp Heizpistole mit hochleistungsstrahlpumpe und schnellwechselbaren teilen
WO1999005453A1 (fr) * 1997-07-25 1999-02-04 Maxon Corporation Bruleur
US6537064B1 (en) 2000-05-04 2003-03-25 Megtec Systems, Inc. Flow director for line burner
US20070048685A1 (en) * 2005-09-01 2007-03-01 General Electric Company Fuel burner
US20090317756A1 (en) * 2008-06-18 2009-12-24 Mestek, Inc. Digital high turndown burner
US8147240B2 (en) 2009-03-17 2012-04-03 Hni Technologies Inc. Thin chamber burner
TWI614455B (zh) * 2016-11-21 2018-02-11 提升導流效果之熱風槍

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3340180A (en) * 1964-08-25 1967-09-05 Gulf Research Development Co Hydrofining-hydrocracking process employing special alumina base catalysts
FR1591994A (fr) * 1968-11-18 1970-05-04
DE1959952A1 (de) * 1969-11-28 1971-11-11 Eclipse Fuel Engineering Compa Brenner zum Erhitzen eines gasfoermigen Mediums mit einem geringen Sauerstoffgehalt
US3649211A (en) * 1970-02-05 1972-03-14 Coen Co Air augmented duct burner
JPS5432836A (en) * 1977-08-19 1979-03-10 Mitsubishi Electric Corp Combustion apparatus
EP0031206B1 (fr) * 1979-12-05 1984-02-15 Nu-Way Energy Limited Brûleur à gaz pour le chauffage d'air
JPS5714106A (en) * 1980-06-27 1982-01-25 Kawasaki Steel Corp Method and apparatus for combustion with low nox in radiant tube burner
JPS5787514A (en) * 1980-11-19 1982-06-01 Matsushita Electric Ind Co Ltd Combustion device
US4340180A (en) * 1980-12-03 1982-07-20 Maxon Corporation Nozzle mixing line burner
US4403947A (en) * 1981-08-12 1983-09-13 Eclipse, Inc. Gas mixing burner
US4610626A (en) * 1983-06-23 1986-09-09 Matsushita Electric Industrial Co., Ltd. High load gas combustion apparatus

Also Published As

Publication number Publication date
ES2030122T3 (es) 1992-10-16
ATE72605T1 (de) 1992-02-15
DE3868406D1 (de) 1992-03-26
US5057008A (en) 1991-10-15
EP0352342A1 (fr) 1990-01-31

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