EP1915573A1 - Procede et systeme de surveillance d'un bruleur - Google Patents
Procede et systeme de surveillance d'un bruleurInfo
- Publication number
- EP1915573A1 EP1915573A1 EP06769657A EP06769657A EP1915573A1 EP 1915573 A1 EP1915573 A1 EP 1915573A1 EP 06769657 A EP06769657 A EP 06769657A EP 06769657 A EP06769657 A EP 06769657A EP 1915573 A1 EP1915573 A1 EP 1915573A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- channel
- oxidant
- fuel
- burner
- supplied
- 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.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000012544 monitoring process Methods 0.000 title description 5
- 239000007800 oxidant agent Substances 0.000 claims abstract description 69
- 230000001590 oxidative effect Effects 0.000 claims abstract description 68
- 239000000446 fuel Substances 0.000 claims abstract description 50
- 238000002485 combustion reaction Methods 0.000 claims abstract description 22
- 239000007789 gas Substances 0.000 description 12
- 230000015572 biosynthetic process Effects 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 239000000567 combustion gas Substances 0.000 description 2
- 238000010790 dilution Methods 0.000 description 2
- 239000012895 dilution Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 239000001273 butane Substances 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 1
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
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
- F23D14/20—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone
- F23D14/22—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C9/00—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber
- F23C9/006—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber the recirculation taking place in the combustion chamber
-
- 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
- F23D14/32—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid using a mixture of gaseous fuel and pure oxygen or oxygen-enriched air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L7/00—Supplying non-combustible liquids or gases, other than air, to the fire, e.g. oxygen, steam
- F23L7/007—Supplying oxygen or oxygen-enriched air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2229/00—Flame sensors
- F23N2229/04—Flame sensors sensitive to the colour of flames
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Definitions
- the present invention relates to a method and an arrangement for monitoring a burner, principally burners used in indus- trial furnaces .
- One way of solving the problem of the formation of NO x during the combustion of fossil fuels is to inject gases at a high rate of flow into the combustion zone.
- Gaseous fuel and a gaseous oxidant are injected at a distance from each other into the combustion zone.
- the gases are injected through lances that are provided with nozzles into a burner head.
- the injected gases will be diluted with combustion gases since the gases are injected at a distance from each other.
- This dilution together with the fact that the diluted gases are first mixed at a certain distance away from the burner head, means that the gases react with each other in a combustion process that proceeds at a lower rate than that of conventional combustion due to a lower concentration of gases. This combustion ensures that the formation of NO x is suppressed.
- a burner For reasons of safety, a burner must be monitored for the presence of a flame during operation. Such monitoring usually takes place through a UV-sensor, which is sensitive to ultra- violet radiation.
- the sensor is normally mounted in the burner such that the UV-sensor sees a part of a flame that is present .
- the method of combustion described above requires that the furnace is first heated to the spontaneous ignition temperature of the gases before combustion by the method described above can be commenced.
- the furnace is in this case operated at a temperature that lies under approximately 800 0 C.
- a burner of the type specified above cannot for reasons of safety be used during the heating phase since a flame of the type described is difficult to detect at a temperature under 800 0 C, while safety regulations at the same time specify that UV- monitoring is to take place at temperatures that lie under 800°C.
- the present invention solves this problem.
- the present invention thus relates to a method during the combustion of a fuel with an oxidant in an industrial fur- nace, in which the fuel and the oxidant are supplied to a burner head and where the flame is monitored by means of a detector for ultraviolet light, and it is characterised in that at least one channel for the supply of fuel and at least two channels for the supply of oxidant are present and open out into the surface of the burner head that faces into the furnace, in that the channel for fuel and a first channel for oxidant are located at a distance from each other, in that the channel for fuel and the second channel for oxidant are located more closely to each other, in that the said detector is arranged at the channel for fuel or at the second channel for oxidant, and in that a fraction of the total amount of oxidant supplied is caused to be supplied to the said second channel for oxidant, and in that oxidant is supplied to the said second channel during the complete combustion process.
- the invention furthermore relates to an arrangement of the type and having the principal characteristics that are specified in claim 6.
- the invention is described in more detail below, partially in association with an embodiment of the invention shown on the attached drawings, where
- FIG. 1 shows schematically a longitudinal section of a burner head according to the invention
- FIGS. 2a, 2b and 2c show alternative embodiments of a central part of the burner head seen from the right in Figure 1.
- Figure 1 shows a burner for the combustion of a fuel with an oxidant in an industrial furnace.
- the burner is arranged such that fuel and oxidant are supplied to the burner head 1.
- a detector 2 for the detection of ultraviolet light is present outside of the burner head 1 in order to monitor a flame.
- At least one channel 3 is present for the supply of fuel and at least two channels 4, 5 for the supply of oxidant, opening out in the surface 6 of the burner head that faces the furnace.
- the channel 3 for fuel and a first channel for oxidant are located at a distance from each other, and the channel 3 for fuel and the second channel 4 for oxidant are located more closely to each other.
- Figure 1 shows also a third channel 7 for the supply of oxidant.
- the said detector 2 is arranged at the channel 3 for fuel or in the second channel 4 for oxidant. It is appropriate that the detector is arranged at the end of the channel that lies farthest away from the furnace and so arranged that UV-light from the flame that is led into the channel impinges upon the detector.
- the detector is connected to a detector circuit, not shown in the drawings, by means of which circuit the presence or otherwise of a flame can be assessed. In the case in which a flame is not detected, supply of fuel and oxidant is interrupted.
- the said detector 2 is arranged at the channel 3 for fuel, to arrange the detector at a special pipe that runs within the channel 3 for fuel .
- the burner is arranged to supply a fraction of the total amount of oxidant supplied to the said second channel 4 for oxidant.
- the channel 3 for fuel and the second channel 4 for oxidant which are located more closely to each other, have a distance between them such that a stable flame that begins close to the burner head can be maintained.
- the channel 3 for fuel and the first channel 5 for oxidant are located at such a distance from each other that the gases injected are diluted with combustion gases.
- This dilution, together with the fact that the diluted gases are first mixed at a certain distance away from the burner head, means that the gases react with each other in a combustion process in which the formation of NO x is suppressed, as has been described above.
- the fuel can be natural gas, propane, butane, gasol, heating oil, etc.
- the oxidant is injected into the combustion space through one or several nozzles designed as straight pipes or through Laval nozzles or Venturi nozzles.
- a preferred pressure for the oxidant is an excess pressure of at least 2 bar. The greater this pressure, the greater will be the suppression of the formation of NO x that is achieved.
- a preferred pressure for normal applications is 4-5 bar.
- the fuel is injected through normal nozzles at the pressure that is available.
- the distance between the channel 3 for fuel and the said first channel should exceed approximately 40 mm in order to achieve the desired effect.
- the detector 2 is arranged in the channel 3 for fuel or in the second channel 4 for oxi- dant . Both of these channels open out close to each other in the side of the burner head that faces the furnace, and for this reason detection of a flame that arises from combustion with oxidant from the second channel 4 for oxidant will be extremely secure. Fuel and oxidant from the first channel 5 for oxidant will be combusted provided that this flame is present .
- the oxidant is caused to be supplied by the said second channel 4. This amount of oxidant gives a stable flame, while at the same time the fraction of oxidant is sufficiently small not to influence the formation of NO x .
- Figures 2a-2c show different designs of the channel for fuel and the said second channel, seen from the right in Figure 1.
- the said second channel 4;4B and the channel 3;3B for fuel are coaxial .
- the said second channel 4C and the channel 3C for fuel are separated and parallel.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Combustion (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
L'invention concerne un procédé mis en oeuvre pendant la combustion d'un combustible avec un oxydant dans un four industriel, dans lequel le combustible et l'oxydant sont alimentés vers une tête de brûleur et dans lequel la flamme est surveillée au moyen d'un détecteur de lumière ultraviolette. L'invention est caractérisée : en ce qu'au moins un canal (3) destiné à l'alimentation de combustible et au moins deux canaux (4, 5) destinés à l'alimentation d'oxydant sont présents et débouchent sur la surface (6) de la tête de brûleur (1) qui est orientée vers l'intérieur du four, en ce que le canal (3) destiné au combustible et un premier canal (5) destiné à l'oxydant sont situés à une certaine distance l'un de l'autre, en ce que le canal (3) destiné au combustible et le second canal (4) destiné à l'oxydant sont situés de manière plus proche l'un de l'autre, en ce que ledit détecteur (2) est agencé au niveau du canal (3) destiné au combustible ou du second canal (4) destiné à l'oxydant, et en ce qu'une fraction de la quantité totale d'oxydant alimentée est alimentée vers ledit second canal (4) destiné à l'oxydant, et en ce que l'oxydant est alimenté vers ledit second canal pendant le procédé de combustion complet. L'invention concerne également un brûleur.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE0501840A SE0501840L (sv) | 2005-08-19 | 2005-08-19 | Förfarande jämte för övervakning av en brännare |
PCT/SE2006/050278 WO2007021239A1 (fr) | 2005-08-19 | 2006-08-04 | Procede et systeme de surveillance d'un bruleur |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1915573A1 true EP1915573A1 (fr) | 2008-04-30 |
Family
ID=37757826
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06769657A Withdrawn EP1915573A1 (fr) | 2005-08-19 | 2006-08-04 | Procede et systeme de surveillance d'un bruleur |
Country Status (5)
Country | Link |
---|---|
US (1) | US20070042302A1 (fr) |
EP (1) | EP1915573A1 (fr) |
BR (1) | BRPI0616554A2 (fr) |
SE (1) | SE0501840L (fr) |
WO (1) | WO2007021239A1 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007041086A1 (de) * | 2007-08-30 | 2009-03-05 | Linde Ag | Verfahren und Vorrichtung zum Schmelzen von Glas |
CN102056850B (zh) * | 2008-06-05 | 2014-05-07 | 旭硝子欧洲玻璃公司 | 玻璃熔融炉 |
Family Cites Families (52)
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US3280882A (en) * | 1964-04-06 | 1966-10-25 | Babcock & Wilcox Co | Flame detector arrangement |
US3262486A (en) * | 1964-08-07 | 1966-07-26 | John J Rose | Ultraviolet light responsive flame modulating control |
US3689773A (en) * | 1971-02-01 | 1972-09-05 | Bailey Miters & Controls Ltd | Flame monitor system and method using multiple radiation sensors |
US3771944A (en) * | 1972-08-30 | 1973-11-13 | Bloom Eng Co Inc | Adjustable flame burner |
US4039844A (en) * | 1975-03-20 | 1977-08-02 | Electronics Corporation Of America | Flame monitoring system |
US4116611A (en) * | 1976-09-01 | 1978-09-26 | Consolidated Natural Gas Service Company | Gaseous and liquid fuel burner |
DE2729321C2 (de) * | 1977-06-29 | 1983-10-20 | Smit Ovens Nijmegen B.V., Nijmegen | Verfahren zur Verbrennung von flüssigem Brennstoff sowie Brennereinrichtung zurDurchführung des Verfahrens |
US4378205A (en) * | 1980-04-10 | 1983-03-29 | Union Carbide Corporation | Oxygen aspirator burner and process for firing a furnace |
US4630554A (en) * | 1982-05-14 | 1986-12-23 | T.A.S., Inc. | Pulverized solid fuel burner and method of firing pulverized fuel |
US4525138A (en) * | 1983-10-28 | 1985-06-25 | Union Carbide Corporation | Flame signal enhancer for post-mixed burner |
US4541798A (en) * | 1983-11-07 | 1985-09-17 | Union Carbide Corporation | Post-mixed spark-ignited burner |
US4861262A (en) * | 1984-08-17 | 1989-08-29 | American Combustion, Inc. | Method and apparatus for waste disposal |
US4709155A (en) * | 1984-11-22 | 1987-11-24 | Babcock-Hitachi Kabushiki Kaisha | Flame detector for use with a burner |
US5073104A (en) * | 1985-09-02 | 1991-12-17 | The Broken Hill Proprietary Company Limited | Flame detection |
US4793798A (en) * | 1986-08-08 | 1988-12-27 | Sabin Darrel B | Burner apparatus |
DE3706234A1 (de) * | 1987-02-26 | 1988-09-08 | Sonvico Ag Ing Bureau | Brenner zum verbrennen von fluessigen oder gasfoermigen brennstoffen |
JPS63243628A (ja) * | 1987-03-31 | 1988-10-11 | Toshiba Corp | 火炎検出装置 |
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US5123836A (en) * | 1988-07-29 | 1992-06-23 | Chiyoda Corporation | Method for the combustion treatment of toxic gas-containing waste gas |
ATE114364T1 (de) * | 1990-06-29 | 1994-12-15 | Wuenning Joachim | Verfahren und vorrichtung zum verbrennen von brennstoff in einem verbrennungsraum. |
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FR2804497B1 (fr) * | 2000-02-01 | 2002-03-29 | Air Liquide | Bruleur aero-oxy-gaz a flamme stabilisee, et bloc-ouvreau equipe d'un tel bruleur |
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US6659762B2 (en) * | 2001-09-17 | 2003-12-09 | L'air Liquide - Societe Anonyme A' Directoire Et Conseil De Surveillance Pour L'etude Et L'exploitation Des Procedes Georges Claude | Oxygen-fuel burner with adjustable flame characteristics |
US6910878B2 (en) * | 2003-06-19 | 2005-06-28 | Praxair Technology, Inc. | Oxy-fuel fired process heaters |
US7074034B2 (en) * | 2004-06-07 | 2006-07-11 | Air Products And Chemicals, Inc. | Burner and process for combustion of a gas capable of reacting to form solid products |
SE527771C2 (sv) * | 2004-10-29 | 2006-05-30 | Aga Ab | Förfarande vid tillverkning av långsträckta stålprodukter |
SE528209C2 (sv) * | 2005-08-19 | 2006-09-26 | Aga Ab | Lans för användande vid förbränning och förfarande för tillverkning av lansen |
SE530353C2 (sv) * | 2006-04-25 | 2008-05-13 | Aga Ab | DFI-brännare innefattande ett metallblock och två munstycken som sträcker sig ut från metallblocket |
SE531788C2 (sv) * | 2006-06-22 | 2009-08-04 | Aga Ab | Förfarande vid förbränning med syrgas, jämte brännare |
-
2005
- 2005-08-19 SE SE0501840A patent/SE0501840L/xx not_active Application Discontinuation
-
2006
- 2006-03-10 US US11/372,678 patent/US20070042302A1/en not_active Abandoned
- 2006-08-04 EP EP06769657A patent/EP1915573A1/fr not_active Withdrawn
- 2006-08-04 WO PCT/SE2006/050278 patent/WO2007021239A1/fr active Application Filing
- 2006-08-04 BR BRPI0616554-0A patent/BRPI0616554A2/pt not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO2007021239A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2007021239A1 (fr) | 2007-02-22 |
BRPI0616554A2 (pt) | 2011-06-21 |
US20070042302A1 (en) | 2007-02-22 |
SE0501840L (sv) | 2007-02-20 |
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