EP1893915B1 - Brenneranordnung und verfahren für deren betrieb - Google Patents

Brenneranordnung und verfahren für deren betrieb Download PDF

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Publication number
EP1893915B1
EP1893915B1 EP06754305A EP06754305A EP1893915B1 EP 1893915 B1 EP1893915 B1 EP 1893915B1 EP 06754305 A EP06754305 A EP 06754305A EP 06754305 A EP06754305 A EP 06754305A EP 1893915 B1 EP1893915 B1 EP 1893915B1
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EP
European Patent Office
Prior art keywords
chamber
fuel
combustion air
combustion
temperature
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.)
Revoked
Application number
EP06754305A
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German (de)
English (en)
French (fr)
Other versions
EP1893915A1 (de
Inventor
Sabine Von Gersum
Aloys Quatmann
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Elster GmbH
Original Assignee
Elster GmbH
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Filing date
Publication date
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Application filed by Elster GmbH filed Critical Elster GmbH
Priority to PL06754305T priority Critical patent/PL1893915T3/pl
Publication of EP1893915A1 publication Critical patent/EP1893915A1/de
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F23N1/002—Regulating fuel supply using electronic means
    • 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 
    • F23C7/00—Combustion apparatus characterised by arrangements for air supply
    • F23C7/002—Combustion apparatus characterised by arrangements for air supply the air being submitted to a rotary or spinning motion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/20—Systems for controlling combustion with a time programme acting through electrical means, e.g. using time-delay relays
    • F23N5/203—Systems for controlling combustion with a time programme acting through electrical means, e.g. using time-delay relays using electronic means
    • 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 
    • F23C2205/00—Pulsating combustion
    • F23C2205/10—Pulsating combustion with pulsating fuel supply
    • 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 
    • F23C2900/00—Special features of, or arrangements for combustion apparatus using fluid fuels or solid fuels suspended in air; Combustion processes therefor
    • F23C2900/03005—Burners with an internal combustion chamber, e.g. for obtaining an increased heat release, a high speed jet flame or being used for starting the combustion
    • 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 
    • F23C2900/00—Special features of, or arrangements for combustion apparatus using fluid fuels or solid fuels suspended in air; Combustion processes therefor
    • F23C2900/99006—Arrangements for starting combustion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2225/00—Measuring
    • F23N2225/08—Measuring temperature
    • F23N2225/16—Measuring temperature burner temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2237/00—Controlling
    • F23N2237/06—Controlling two predeterming temperatures, e.g. day-night

Definitions

  • the invention relates to a burner assembly and a method of operating the burner assembly.
  • Known methods for NO x reduction are therefore based, for example, on lowering the combustion temperature to reduce NO x .
  • fuel and / or combustion air is classified, or inert exhaust gases are recirculated.
  • a burner that works with a stage combustion is in the DE 38 30 038 described.
  • the order of mixing is essential. For example, first the oxygen carrier gas is mixed with exhaust gas and then fuel is added.
  • the combustion intensity is reduced to the stability limit of the combustion. This can lead to problems with the cold start behavior of the burner. Due to the low combustion intensity, ignition problems, CO formation, incomplete combustion and stability problems can occur. The lower the NO x emissions of a burner at high ambient temperatures or furnace chamber temperatures, the worse is its combustion behavior at low ambient temperatures or when operating with cold combustion air.
  • the burner To start the burner and to heat the oven space to an operating temperature, the burner operates in a first operating state. Upon reaching a defined switching threshold is switched to a second operating state.
  • Such a method is for example from the EP 0 343 746 A2 known.
  • the burner does not work with a combustion chamber, but combustion air and fuel are passed directly into the furnace chamber, depending on the temperature in the furnace chamber.
  • the burner is switched to a first operating state, in which the fuel is supplied via a first fuel supply before entering the furnace chamber of the combustion air, wherein the resulting mixture is introduced from the wall of the furnace chamber in the latter spaced apart.
  • the burner is switched to a second operating state by the first fuel supply is closed, and a second fuel supply is opened.
  • the second fuel supply opens at a predetermined distance from the combustion air supply and a predetermined distance from the wall of the furnace chamber in this.
  • An above-mentioned method is further from the EP 0 685 683 B1 known.
  • the burner is switched to a first operating state.
  • fuel is supplied to a combustion chamber via a first fuel supply, which ends in the vicinity of an outlet opening of an air supply device.
  • the fuel is mixed with the supplied combustion air and the resulting mixture is ignited via an ignition electrode arranged in the chamber, whereupon it burns in the combustion chamber and heats a furnace chamber associated with the combustion chamber.
  • the burner is switched to a second operating state by the first fuel supply is closed and a second fuel supply is opened.
  • the second fuel supply ends approximately at the height of the outlet opening of the combustion chamber. In the second operating state, the combustion chamber is no longer supplied with fuel, so that the combustion process in the combustion chamber is substantially completely suppressed.
  • the burners necessary for carrying out the above known methods are structurally complex, since different fuel feeds are required for the two operating states of the burner.
  • mechanical actuators are necessary which close the first fuel supply when switching to the second operating state and open the second fuel supply. The cost of such a burner is relatively high.
  • the invention has for its object to provide a method for NO x -reduced combustion available, which can be operated with a structurally simple burner.
  • step a the fuel / combustion air mixture in the chamber is ignited and the combustion in step b) is maintained for a first period of time.
  • the ignition takes place via an ignition device, which can be arranged for example in the chamber in the vicinity of the mouth of the fuel supply.
  • the ignition device may be formed, for example, as an ignition electrode.
  • the ignition device is realized as a pilot burner, which then opens into the chamber 4.
  • the term "in the chamber” encompasses both the interior of the chamber and the chamber inner wall. Both gaseous and liquid fuels can be used. However, preferred is the use of a gaseous fuel, in particular the use of natural gas or propane.
  • combustion air is meant any oxygen carrier, but for cost reasons, the use of air is preferred, which may be added adjuvants or auxiliary gases.
  • the chamber and the furnace chamber is heated to above the ignition temperature of the fuel / combustion air mixture used. This heating phase of the burner is referred to below as the first operating state.
  • step c) the fuel supply is reduced or closed for a second period of time so that the combustion in the chamber stops and remains suspended. During this second period, the temperature in the chamber rapidly drops below a first setpoint temperature.
  • the first setpoint temperature is a temperature which is below the ignition temperature of the fuel / combustion air mixture used in the subsequent method step.
  • step d which is referred to as the second operating state of the burner, the fuel supply is again increased so that forms an ignitable mixture in the chamber, this does not burn in the chamber, as the temperature of the chamber below the first setpoint temperature and thus below the ignition temperature of the fuel / combustion air mixture used is.
  • the temperature of the furnace chamber is still above the ignition temperature of the fuel / combustion air mixture used in this process step, combustion of the mixture on entry into the furnace chamber, and the combustion is maintained with continuous supply of the fuel / combustion air mixture.
  • the fuel / combustion air mixture used in the second operating state of the burner may be the one used in the first operating state, but it is also possible that either a different mixing ratio of fuel and combustion air or another fuel is used. Since in this second operating state, in contrast to the first operating state, no combustion takes place in the chamber, the chamber serves as a pure mixing chamber.
  • the inventive method can be operated with cold combustion air, but it is also possible that the combustion air is preheated before being fed into the chamber.
  • This can be achieved, for example, by designing the burner used in the method as a recuperative burner, i. the combustion air is preheated before being fed into the chamber with exhaust gas from the furnace chamber, or the combustion air is preheated in an external recuperator.
  • An essential advantage of the method according to the invention over known methods is that the method according to the invention can be operated with structurally very simply constructed burners.
  • the fuel supply in the first and the second operating state takes place with the same fuel supply instead of. Since only one fuel supply is used, only one mechanical actuator for reducing or closing and increasing or opening the fuel supply must be used. Accordingly, the cost of burners operating in accordance with this method is lower than the cost of burners operating according to known methods.
  • the temperature in the furnace chamber is still above the ignition temperature of the fuel used in the second operating state / combustion air mixture.
  • the temperature in the chamber is actively lowered below the first set temperature by dissipating heat from the chamber 4 with suitable means or devices.
  • the second period of time can thereby be shortened, so that the burner can be switched to the second operating state faster, which represents the continuous operating state of the burner.
  • the temperature in the chamber is kept below the ignition temperature of the fuel / combustion air mixture by actively removing heat from the chamber with at least one suitable device the chamber during the second operating state, a certain amount of heat from the furnace chamber is supplied.
  • the heat is advantageously removed from the chamber by absorbing heat from the combustion air flowing through the chamber 4 or from a non-combustible fuel / combustion air mixture.
  • the heat is dissipated in this way with a means, namely the combustion air or the non-combustible fuel / combustion air mixture, without an additional Device for dissipating heat from the burner is provided.
  • a means namely the combustion air or the non-combustible fuel / combustion air mixture
  • the heat is removed from the chamber (4) by dissipating heat from the fuel / combustion air mixture flowing through the chamber (4).
  • the heat is dissipated in this way with a means, namely the fuel / combustion air mixture, which is provided without an additional means for dissipating heat from the burner.
  • the heat is dissipated with at least one cooling device which is arranged at the outer surface of the chamber.
  • a cooling device can be used both during the second period of time, ie in the case of interrupted combustion, and in the second operating state, alternatively or additionally to the heat removal with the combustion air or the non-combustible fuel / combustion air mixture and / or the heat removal with the fuel / combustion air mixture.
  • a cooling device may assist in keeping the temperature in the chamber during the second operating state below the ignition temperature of the fuel / combustion air mixture used.
  • One of the time periods or both periods may be a predetermined period of time.
  • predetermined periods of time means that the period of time is not at execution of the method is set, but that the period of time is given taking into account at least one parameter of the high-temperature burner, the furnace chamber, the fuel or the combustion air. Due to the specification of the period of time, no measured values have to be determined in the method from which the time span can be derived. This has the advantage that no expensive measuring devices in the chamber or the oven room must be arranged.
  • parameters such as, for example, the calorific value of the fuel, the heat capacity or the temperature of the combustion air or the heat radiation of the chamber and the furnace chamber are suitable.
  • the first and / or the second time period can be determined.
  • the first time period can be set taking into account at least one parameter so that after the first time period, the temperature in the furnace chamber above the ignition temperature of the fuel / combustion air mixture to be used in the second operating state.
  • the temperature difference between the setpoint and the ignition temperature can be set over the first period of time.
  • the second time period can be set taking into account at least one determined parameter so that after this time the temperature in the chamber is below the first target temperature, but the temperature in the furnace is above the ignition temperature of the fuel to be used in the second operating state. Combustion air mixture is.
  • the combustion in the chamber 4 for the first period of time can be maintained until a second setpoint temperature is exceeded in the furnace chamber, wherein the second setpoint temperature is determined by means disposed in the furnace measuring means ,
  • the second desired temperature characterizes a temperature which is above the ignition temperature of the fuel / combustion gas mixture used in the first or operating state of the burner lies.
  • step c) of the method is initiated.
  • Which of the two methods is preferable for specifying the first period depends on the particular case of operation of the burner. For example, in case that the operation of the burner is maintained for a long period of time and thereafter interrupted for a long period of time, the specification is appropriate taking parameters into account.
  • the fuel supply via the fuel supply during the second time period may be reduced at least until the first setpoint temperature is undershot, the first setpoint temperature being measured by means of a measuring device arranged in the chamber is determined.
  • the specification of the second period of time by exceeding the first setpoint temperature offers the above-mentioned advantages.
  • the measuring devices which detect the temperature in the chamber or the temperature in the furnace can be, for example, those measuring devices which determine the temperature on the basis of contact with the medium to be measured.
  • An example of such a measuring device is a thermocouple.
  • the temperature can be measured with measuring equipment be determined, which measure the temperature indirectly via the heat radiation (pyrometer).
  • the two alternative methods for specifying the time periods can be combined as desired, or only one of the two methods can be used for both periods of time.
  • the combustion air is directed at feeding into the chamber with an air guide such that the combustion air exits the air guide with a swirl pulse.
  • this swirl pulse of the combustion air ensures a defined mixing of the combustion air with the fuel. It is preferred that the swirl number of the combustion air at the exit from the louver is less than 1.5.
  • combustion air supply is increased before increasing the fuel supply.
  • a reduction of the combustion air supply during the second period of time may be particularly advantageous if the furnace chamber or the chamber is sensitive to an excessively high oxygen concentration.
  • Prior art methods preferably operate at a high exit velocity of the fuel / combustion air mixture into the furnace space to achieve low NO x emissions.
  • the inventive method is preferably performed with exit speeds of the fuel / combustion air mixture in the furnace chamber of 5-70 m / s, which has surprisingly been found that an increase in speed from 5 m / s to 70 m / s has no effect on the burner's NO x emissions. This has the advantage that a simpler structural design of the burner used in the process is possible.
  • the invention also provides a burner assembly with the indicated in claim 14 features.
  • An advantage of the burner assembly according to the invention is that it can be used according to the inventive method for NO x - reduced combustion.
  • Burners known from the prior art, which are operated with a method for NO x -reduced combustion, are structurally considerably more complicated, which requires higher production costs and a greater maintenance outlay.
  • the simple structural design of the burner is made possible by the inventive method described above.
  • only the special structural design of the burner makes this method possible.
  • the high-temperature burner has an air guiding device, which is formed upstream of the at least one fuel outlet.
  • An air guiding device arranged in this way ensures good mixing of combustion air and fuel in the first and second operating states.
  • the fuel supply has a fuel outlet. It is preferred that the fuel supply ends in a nozzle which is formed downstream of the louver, wherein the at least one fuel outlet is formed in this nozzle. It is advantageous that the nozzle has a plurality of Brennstoffauslässen formed at any angle between 0 and 90 ° to the axis of the chamber. With such a nozzle formed, the burner assembly can be adapted to the prevailing conditions for each application. For example, by the number and orientation of the fuel outlets, it is possible to adjust the burner arrangement ideally to the fuel to be used.
  • At least one of the fuel outlets is formed axially parallel to the chamber.
  • Such an axially parallel design of at least one fuel outlet ensures particularly good mixing of the fuel with the combustion air and, in the second operating state, a particularly favorable flow of the fuel / combustion air mixture into the furnace chamber.
  • the nozzle has an axially parallel to the chamber formed, extending into the chamber fuel lance with at least one fuel outlet. The length of this lance is at most 50% of the length of the chamber used in the burner assembly.
  • the length of the chamber itself is preferably greater than the simple diameter of the louver.
  • the fuel lance has a plurality of Brennstoffauslässen formed at any angle between 0 and 90 ° to the axis of the fuel lance, preferably at least one fuel outlet is formed axially parallel to the fuel lance.
  • the above-mentioned air guiding device advantageously has a plurality of combustion air openings, which may be formed with an inclination to the axis of the air guiding device, wherein it is preferred that the inclination angle is smaller than 60 °.
  • This inclination may have directional components in the radial and / or circumferential direction, wherein all of the openings may either have the same inclination or the inclinations of the openings may be different.
  • the combustion air after passing through the louver has a swirl number smaller than 1.5. It is particularly advantageous that the combustion air openings have an angle between 15 ° and 50 ° to the axis of the louver.
  • combustion air openings are formed as slots on the circumference of the louver, and / or combustion air openings are formed in the interior of the louver as preferably circular openings.
  • the inclination of the slots may differ from the inclination of the openings.
  • the louver may be, for example, disc-shaped or annular.
  • the combustion air openings may be uniformly distributed over the louver, but it is preferred that combustion air openings are formed as slots on the periphery of the louver, and combustion air openings are formed in the interior of the louver as preferably circular openings.
  • the slots formed on the circumference of the air guiding device can be distributed uniformly around the circumference, wherein all the slots are of identical design. However, it is also possible that the slots formed on the circumference of the louver vary, for example so that every other slot is the same, but adjacent slots are different. It is also possible that slots with different angles to the axis of the louver are provided over the circumference of the louver.
  • the combustion air openings formed as preferably circular openings in the inner region of the air guiding device can, as already explained above, have an inclination to the axis of the air guiding device.
  • This inclination can have directional components in the radial and / or circumferential direction, wherein all of the openings can either have the same inclination or the inclinations of the openings differ could be.
  • the axis-parallel alignment of the openings has the advantage that such a louver is easier to manufacture.
  • the fuel supply is reduced so that combustion in the chamber stops, ie, a fuel / combustion air mixture is introduced into the chamber, which can not ignite in the chamber. But since at least the combustion air supply is at least partially maintained in this phase, heat is dissipated by the combustion air from the interior of the chamber and from the wall of the chamber itself. The temperature in the chamber itself drops much faster than the temperature of the wall of the chamber. It will therefore occur a state in which the temperature in the chamber itself is below the ignition temperature of the fuel / combustion air mixture used in the following process step, ie the second operating state, but the temperature of the wall of the chamber is above this ignition temperature.
  • the fuel supply since the louver directs the combustion air such that the chamber wall of the combustion air curtain described above is passed over, which can not ignite due to the low concentration of the fuel in the veil on the wall of the chamber.
  • the concentration to the interior of the chamber greatly increases and in the interior of the chamber is so high that an ignitable mixture is present.
  • the temperature in the interior of the chamber is already below the ignition temperature, the mixture does not ignite in the chamber, and for reasons mentioned above, not on the chamber wall whose temperature is still above the ignition temperature at this time.
  • the second time span can thus be subdivided into two sections in the above-mentioned embodiment of the air guiding device, with combustion taking place in the furnace chamber only in the first section, in which no ignitable mixture flows through the chamber.
  • the combustion in the furnace chamber can be reintroduced, so that the burner can be transferred more quickly into its routine operation.
  • the air guiding device may be designed as a cylinder in which the fuel feed opens, and which has a plurality of combustion air inlets.
  • the air guiding device may be advantageous for optimal combustion or mixing.
  • the mouth of the Chamber is formed in the furnace chamber as a rotationally symmetrical opening.
  • the cross section of the opening is smaller than the cross section of the chamber, in particular smaller than 0.8 times the cross section of the chamber.
  • FIG. 1 shows a first preferred embodiment of the burner of the burner assembly according to the invention.
  • the burner assembly includes a high temperature burner and a controller (not shown) coupled to the burner.
  • the burner has a housing 1, into which a fuel line 3a and a combustion air line 2a opens.
  • the fuel line 3a passes in the housing 1 in a fuel supply 3, and the combustion air line 2a is in a combustion air supply 2 via.
  • the housing 1 is followed by a chamber 4 made of a highly heat-resistant material, in which the fuel supply 3 and the combustion air duct 2 open.
  • Preferred are chambers made of ceramic materials, SiC or metal alloys.
  • the chamber 4 opens via an outlet 5 in a furnace chamber 6 or a (not shown) arranged in the furnace chamber 6 jet pipe of an industrial burner.
  • the outlet 5 is formed by a constriction of the chamber 4 in the vicinity of the mouth of the chamber 4 in the furnace chamber 6, and is preferably rotationally symmetrical about the axis of the chamber 4.
  • the cross-section of the chamber to the constriction at the outlet 5 decreases slightly.
  • the cross section of the chamber may also be constant over its entire length up to the constriction.
  • the chamber is completely conical and the outlet 5 connects directly to the chamber 5 without a constriction. In the event that the cross-section of the chamber decreases towards the mouth, the cross section around the 0.8-flat is less than the largest cross section of the chamber 4th
  • the fuel supply 3 ends at the in FIG. 1 illustrated embodiment in a nozzle 8 with a plurality of fuel outlet openings 9.
  • the nozzle 8 is cup-shaped, wherein the cross section of the nozzle 8 in the illustrated embodiment is greater than the cross section of the fuel supply 3.
  • the fuel outlet openings 9 are distributed over all of the chamber facing surfaces of the nozzle 8, so that fuel axially, radially and at an angle ⁇ from the nozzle 8 into the chamber 4 exits.
  • an air guiding device 10 is arranged, which in FIG. 1 is disc-shaped or annular and the fuel supply 3 coaxially surrounds.
  • the louver 10 has a plurality of combustion air openings 11 which are formed at a defined angle to the axis of the louver.
  • FIGS. 4a and 4b show an embodiment of the louver 10 with a patch on this nozzle 8 with fuel outlets 9.
  • the combustion air openings 11 are formed on the one hand formed on the circumference of the louvers 10 slots 11b as well as in the interior of the louver arranged circular openings 11 a. Both the openings 11 a and the slots 11 b are formed at a defined angle to the axis of the louver 10. In the illustrated embodiment of the louver 10, the slots 11b and the openings 11a are regularly distributed on the louver 10.
  • the louver 10 also has a bore 14 through which an ignition device 12 is guided, which ends in the vicinity of the nozzle 8.
  • FIG. 2 shows a second embodiment of a burner of the burner assembly according to the invention.
  • the nozzle 8 has a fuel lance 13 which extends axially parallel to the axis of the nozzle 8 in the chamber 4. Die Brennkraftmaschine ist in Fig. 1 classroom. At its end, the fuel lance 13 has a plurality of fuel outlets 9a, through which fuel enters the chamber 4. At the in FIG. 2 illustrated embodiment, the fuel lance 13 at the end of radial fuel outlets 9a and an axially parallel to the axis of the fuel lance formed fuel outlet.
  • the nozzle 8 has a plurality of fuel outlets 9 through which fuel passes radially into the chamber 4.
  • FIG. 3 a further embodiment of the burner of the burner assembly according to the invention is shown.
  • the louver 10 is not disk-shaped, but cup-shaped with a disk-shaped plate 10a and a cylinder 10b formed.
  • the disc 10a has (not shown) combustion air passage openings through which combustion air passes from the combustion air supply 2 into the chamber 4.
  • the cylinder 10b is surrounded by an annular gap through which combustion air enters the chamber. The combustion air passing through the annular gap on the outer surface of the cylinder 10b enters the cylinder 10b through combustion air inlets 14 and mixes therein with fuel entering the chamber through the fuel outlet 9b.
  • Fuel supply 3 in a plurality of fuel outlets 9b in the chamber 4 open. It is also possible that also in the embodiment of the louver according to FIG. 3 the fuel supply 3 ends in a nozzle 8 corresponding nozzle.
  • the burner is approached from a cold state, that is, that both the chamber 4 and the furnace chamber 6 have ambient temperature.
  • the fuel supply and the combustion air supply are opened so far that forms an ignitable mixture in the chamber 4.
  • This mixture is ignited by means of the ignition device 12, and the combustion in the chamber 4 is maintained for a first period of time t1, wherein the ignition device 12 can remain activated in this period 12.
  • the temperature in the furnace chamber is detected by a measuring device (not shown in the figures).
  • the next process step is initiated.
  • both the temperature in the chamber 4 and the temperature in the furnace chamber 6 are above the ignition temperature of the fuel / combustion air mixture used in the second operating state of the burner.
  • the fuel supply is interrupted via the fuel supply 3 for a second time period t2, and the ignition device 12 is deactivated. Due to this interruption of the fuel supply, the combustion in the chamber 4 stops and remains suspended for the second time period t2. For other versions of the method, it is of course possible that the fuel supply is reduced only so far that a non-ignitable mixture is present in the chamber.
  • combustion air is further supplied to the chamber 4, which flows through the chamber 4 and dissipates heat from the chamber 4 into the furnace chamber 6. Due to the heat dissipation from the chamber 4, the temperature in the chamber 4 drops rapidly below the first set temperature.
  • the time span t2 is predetermined by parameters of the burner arrangement and of the combustion air. In other words, the temperature in the chamber 4 and the furnace 6 during the period t2 is not constantly determined, the time t2 has been determined before the start of the burner and the control device specified.
  • the fuel supply is completely interrupted during the time period t2.
  • no fuel or ignitable fuel / combustion air mixture flows into the furnace chamber 6, which is constantly above the ignition temperature of a fuel / combustion air mixture to be used in the subsequent process step.
  • no combustion takes place, so that the temperature in the furnace chamber during the period t2 decreases.
  • the heat capacity of the furnace chamber 6 is significantly higher than the heat capacity of the chamber 4, the temperature in the furnace chamber 6 decreases significantly slower compared to the temperature in the chamber 4. This causes an increasing temperature difference between the chamber 4 and the furnace chamber 6 with increasing time interval t2.
  • the temperature in the chamber 4 is below the ignition temperature of the fuel / combustion air mixture used in the subsequent process step.
  • the temperature in the furnace chamber 6 is still well above the ignition temperature of the fuel / combustion air mixture.
  • the burner may have a flame monitoring device which determines the flame stability in the chamber during the first period of time.
  • a flame monitoring device may be, for example, an ionization electrode or a UV probe.
  • this measuring device can also serve as a flame monitoring device.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Regulation And Control Of Combustion (AREA)
  • Mushroom Cultivation (AREA)
EP06754305A 2005-06-14 2006-06-12 Brenneranordnung und verfahren für deren betrieb Revoked EP1893915B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL06754305T PL1893915T3 (pl) 2005-06-14 2006-06-12 Układ palnikowy i sposób jego eksploatacji

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005027635 2005-06-14
PCT/EP2006/005617 WO2006133880A1 (de) 2005-06-14 2006-06-12 Brenneranordnung und verfahren für deren betrieb

Publications (2)

Publication Number Publication Date
EP1893915A1 EP1893915A1 (de) 2008-03-05
EP1893915B1 true EP1893915B1 (de) 2011-08-03

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP06754305A Revoked EP1893915B1 (de) 2005-06-14 2006-06-12 Brenneranordnung und verfahren für deren betrieb

Country Status (5)

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EP (1) EP1893915B1 (es)
AT (1) ATE519076T1 (es)
ES (1) ES2369997T3 (es)
PL (1) PL1893915T3 (es)
WO (1) WO2006133880A1 (es)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9995481B2 (en) 2011-12-20 2018-06-12 Eclipse, Inc. Method and apparatus for a dual mode burner yielding low NOx emission
EP3242080B1 (de) 2016-05-04 2019-07-10 WS-Wärmeprozesstechnik GmbH Vorrichtung und verfahren zur beheizung von öfen mittels strahlrohren

Families Citing this family (5)

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Publication number Priority date Publication date Assignee Title
ITMO20080329A1 (it) * 2008-12-23 2010-06-24 Tck S R L Testina di combustione e bruciatore comprendente tale testina.
IT1397192B1 (it) 2009-12-01 2013-01-04 Danieli Off Mecc Bruciatore industriale e relativo processo di combustione per forni di trattamento termico.
EP2442026B1 (de) * 2010-10-15 2016-01-27 Elster GmbH Hochtemperaturbrenner für Brennerbetriebsverfahren mit zwei Betriebszuständen
EP3052860B1 (fr) * 2013-10-02 2017-12-06 Fives Solios Procede d'injection de combustible gazeux dans un four a chambres a feu(x) tournant(s)
WO2019057166A1 (en) 2017-09-25 2019-03-28 Beijing Zhongyu Topsun Energy Technology Co., Ltd. BURNERS AND METHODS OF USE

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JP2683545B2 (ja) 1988-05-25 1997-12-03 東京瓦斯 株式会社 炉内燃焼方法
DE3830038A1 (de) 1988-09-03 1990-03-08 Gaswaerme Inst Ev Brenner und verfahren zu seinem betreiben
US5263849A (en) * 1991-12-20 1993-11-23 Hauck Manufacturing Company High velocity burner, system and method
DE4419332A1 (de) 1994-06-02 1995-12-14 Wuenning Joachim Industriebrenner mit geringer NO¶x¶-Emission
DE19650973A1 (de) 1996-12-09 1997-06-19 Heinrich Dr Ing Koehne Start- und Betriebsweise einer schadstoffarmen, an porösen Körpern stabilisierten Verbrennung flüssiger Brennstoffe
GB9709205D0 (en) * 1997-05-07 1997-06-25 Boc Group Plc Oxy/oil swirl burner
DE19860636A1 (de) * 1998-12-29 2000-07-06 Ruhrgas Ag Verfahren zur Überwachung eines Brenners
US6652265B2 (en) * 2000-12-06 2003-11-25 North American Manufacturing Company Burner apparatus and method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9995481B2 (en) 2011-12-20 2018-06-12 Eclipse, Inc. Method and apparatus for a dual mode burner yielding low NOx emission
EP3242080B1 (de) 2016-05-04 2019-07-10 WS-Wärmeprozesstechnik GmbH Vorrichtung und verfahren zur beheizung von öfen mittels strahlrohren
US10830432B2 (en) 2016-05-04 2020-11-10 Ws-Wärmeprozesstechnik Gmbh Device and method for heating furnaces by means of radiant tubes

Also Published As

Publication number Publication date
ATE519076T1 (de) 2011-08-15
WO2006133880A1 (de) 2006-12-21
EP1893915A1 (de) 2008-03-05
PL1893915T3 (pl) 2011-12-30
ES2369997T3 (es) 2011-12-09

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