EP1893915A1 - Brenneranordnung und verfahren für deren betrieb - Google Patents
Brenneranordnung und verfahren für deren betriebInfo
- Publication number
- EP1893915A1 EP1893915A1 EP06754305A EP06754305A EP1893915A1 EP 1893915 A1 EP1893915 A1 EP 1893915A1 EP 06754305 A EP06754305 A EP 06754305A EP 06754305 A EP06754305 A EP 06754305A EP 1893915 A1 EP1893915 A1 EP 1893915A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- chamber
- fuel
- combustion air
- temperature
- combustion
- 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.)
- Granted
Links
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 for 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 which works with a staged combustion is described in DE 38 30 038.
- the order of mixing is essential. For example, first the oxygen carrier gas is mixed with exhaust gas and then added to fuel.
- 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 are the worse its burning behavior at low ambient temperatures or when operating with cold combustion air. Furthermore, methods for NO x reduced combustion in high temperature processes are known in which the burner operates in two different operating states.
- the burner To start the burner and to heat the furnace chamber to an operating temperature, the burner operates in a first operating state. Upon reaching a defined conversion Switching threshold is switched to a second operating state.
- Such a method is known, for example, from EP 0 343 746 A2.
- 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 feed 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.
- the burner is switched to a second operating state in which the first fuel feed is closed and a second fuel feed 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.
- a method mentioned above is also known from EP 0 685
- 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 closing the first fuel supply and opening a second fuel supply.
- 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-mentioned known methods are structurally complex, since different fuel feeds are required for the two operating states of the burner.
- mechanical actuators are necessary to 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.
- the object is achieved by a method for operating a high-temperature burner, which has a chamber opening into a furnace chamber, a fuel feed opening into the chamber and an opening into the chamber combustion air supply, wherein: a) formed in the chamber, a fuel / combustion air mixture and is ignited by means of an ignition device, b) the combustion of the fuel / combustion air mixture in the chamber is maintained for a first period, c) then the fuel supply via the fuel supply for a second period of time is reduced so that the combustion stops and remains exposed wherein in the second period the temperature in the chamber drops below a first set temperature, and d) then the fuel supply is increased so that the
- Combustion of the fuel / combustion air mixture is used on entry into the furnace chamber and maintained, the chamber is operated as a mixing chamber.
- step a the fuel / combustion air
- 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” is intended to encompass both the interior of the chamber and the chamber inner wall, both gaseous and liquid fuels may be used, but the use of a gaseous fuel is preferred, in particular its use
- combustion air is meant any oxidizer, but for cost reasons the use of air is preferred, which may be added adjuvants or auxiliary gases.
- the chamber and the oven space 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.
- 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.
- the second period although the temperature in the furnace chamber decreases, but much slower than the temperature in the chamber, which causes the temperature difference between the chamber and furnace chamber increases steadily with progressing first period. It is essential in this context that when the first target temperature is not reached, the temperature in the furnace chamber is still above the ignition temperature of a fuel / combustion air to be used in step d). Mixture is. How this is achieved in detail will be described in more detail below.
- 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 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. leadership. 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 be actively lowered below the first setpoint temperature by removing heat from the chamber 4 by suitable means be shortened so that the burner can be switched faster in the second operating state, 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 is supplied during the second operating state, a certain amount of heat from the furnace chamber.
- 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 dissipation 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 predetermined periods of time.
- predetermined period of time means that the period of time does not management 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 predetermined taking into account at least one parameter such that, after the first period has elapsed, the temperature in the furnace chamber is 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 may be predetermined, taking into account at least one determined parameter, such that, after the expiration of this period, the temperature in the chamber is below the first set temperature, but the temperature in the furnace is above the ignition temperature of the one to be used in the second operating state Fuel / combustion air mixture is.
- the combustion in the chamber 4 can be maintained for the first period of time until a second setpoint temperature in the oven space is exceeded, the second setpoint temperature being measured by means of a measuring device arranged in the oven is determined.
- the second setpoint temperature indicates a temperature which is above the ignition temperature of the fuel / combustion air used in the first or operating state of the burner. Gas mixture is.
- step c) of the method is initiated.
- This offers the advantage that the process can be performed more variable. For a given first period of time, the burner will burn for exactly that time interval, regardless of how high the temperature at the beginning of the process is in the oven or chamber. This leads to higher temperatures after the first time span at elevated outlet temperatures than is actually necessary for the method. This means that either the second period must be maintained longer, or the heat removal from the chamber must be increased for a constant second period of time to reach a state in which can be switched to the second operating state.
- Which of the two methods is preferable for specifying the first period depends on the particular case of operation of the burner. In the event, for example, that the operation of the burner is maintained for a long period of time, and thereafter for a long time
- Period is interrupted, the default offers taking into account parameters.
- the fuel supply via the fuel supply may be reduced at least until the first setpoint temperature is reached during the second time period, wherein the first setpoint temperature is measured by means of a measurement arranged in the chamber - Establishment 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 during feeding into the chamber with an air guiding device such that the combustion air exits the air guiding device 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 when exiting the air guiding device is less than 1.5.
- combustion air supply is increased before increasing the fuel supply.
- a reduction in the supply of combustion air 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.
- the concomitant reduction in heat removal can be compensated, for example, by adding nitrogen to the combustion air or adding at least one cooling device, described above, to the outer surface of the chamber.
- 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 found that an increase in the speed of 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. Such arranged
- Air guiding device ensures a good mixing of combustion air and fuel in the first and the second operating state.
- the fuel supply has a fuel outlet. It is preferred that the fuel supply ends in a nozzle which is formed downstream of the air guiding device, wherein the at least one fuel outlet is formed in this nozzle. It is advantageous that the nozzle has a plurality of Brennstoffausashes, which are formed at an arbitrary 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, it is possible to adjust the burner arrangement ideally to the fuel to be used by the number and orientation of the fuel outlet. It has proven to be advantageous that at least one of the fuel outlet 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 fuel outlets, which are formed at any angle between 0 and 90 ° to the axis of the fuel lance, wherein preferably at least one fuel outlet formed axially parallel to the fuel lance is.
- the above-mentioned air guiding device advantageously has a plurality of Verbrennungs Kunststoff ⁇ réelleen, which may be formed with an inclination to the axis of the Lucasleiteinrich- device, it being preferred that the inclination angle is smaller than 60 °.
- 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 can 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.
- tion openings are formed as slots on the circumference of the louver, and / or Verbrennungs Kunststoff ⁇ Uber in the interior of the louver are formed 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 Verbrennungs Kunststoff ⁇ réelleen may be evenly distributed over the louver, but it is preferred that Verbrennungs Kunststoff ⁇ réelleen are formed as slots on the circumference of the louver, and Verbrennungs Kunststoff ⁇ réelleen in the interior of the louver are formed 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 air guiding device vary, for example in such a way that every second slot is the same, but that adjacent slots are different. It is also possible that over the scope of
- Air guide slots are provided with different angles to the axis of the air guide. Furthermore, it is conceivable that slots are arranged on the circumference of the louver at predetermined positions, for example every 90 °, which deviate from the remaining slots arranged on the circumference.
- the slots themselves can be introduced over the height of the louver at a constant depth in the periphery of the louver, but it is also possible that the depth of the slots with the height in the louver decreases or increases.
- 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 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 in the same direction. may be different.
- the axis-parallel alignment of the openings has the advantage that such a louver is easier to manufacture.
- At least 70% of the combustion air passage area provided by the combustion air openings is arranged in the region of the air guiding device whose diameter is greater than 0.7 times the diameter of the air guiding device.
- the fuel supply is reduced so that the combustion breaks off in the chamber, that is, a fuel / combustion air mixture is fed into the chamber that can not ignite in the chamber. Since, however, at least the combustion air supply is at least partly maintained in this phase, heat is dissipated by the combustion air from the interior of the chamber as well as 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.
- 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.
- combustion of the mixture commences, since the temperature in the furnace chamber is above the ignition temperature of the mixture.
- 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.
- such an embodiment of 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.
- Figure 1 shows a schematic representation of a first embodiment of a burner of the burner assembly according to the invention
- Figure 2 shows a schematic representation of a second embodiment of a burner of the burner assembly according to the invention
- Figure 3 shows a schematic representation of a third embodiment of a burner of the burner assembly according to the invention
- Figures 4a and 4b is a schematic representation of the air guiding device of a burner of the burner arrangement according to the invention.
- 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 adjoined by a chamber 4 made of a highly heat-resistant material, in which the fuel feed 3 and the
- Combustion air duct 2 open.
- 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 to the axis of the chamber 4.
- the cross section of the chamber decreases slightly up to the constriction at the outlet 5.
- 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.
- the cross section is 0.8 times smaller than the largest cross section of the chamber 4th
- the fuel supply 3 ends in the embodiment shown in Figure 1 in a nozzle 8 with a plurality of fuel outlet openings 9.
- the nozzle 8 is pot-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.
- the louver 10 has a plurality of combustion Lucas ⁇ réelleen 11, which are formed at a defined angle to the axis of the louver.
- FIGS. 4a and 4b show an embodiment of the air guiding device 10 with a nozzle 8 with fuel outlet 9 placed thereon.
- the combustion air openings 11 are formed on the one hand by slots IIb formed on the circumference of the air guiding devices 10 and by the inside of the air .Leit Road arranged circular openings IIa. Both the openings IIa and the slots IIb are formed at a defined angle to the axis of the louver 10. In the illustrated embodiment of the air guiding device 10, the slots IIb and the openings IIa are regularly distributed on the air guiding device 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.
- the fuel lance 13 has a plurality of fuel outlets 9 a through which fuel enters the chamber 4.
- 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 shows a further exemplary embodiment of the burner of the burner arrangement according to the invention.
- 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 from the combustion air supply 2 passes 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.
- FIGS. 1 to 3 can also be designed as a recuperative burner without great structural complexity and can be operated as such.
- the necessary structural measures are known in the art and are therefore not explained in detail in this application.
- 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 time period t 1, wherein the ignition device 12 can remain activated in this time 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 open space 6 are above the ignition temperature of the fuel / combustion air mixture used in the second operating state of the burner.
- the fuel supply via the fuel supply 3 is interrupted for a second 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.
- the process it is possible for the process to merely reduce the fuel supply so 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. In the exemplary embodiment of the method described here, the fuel supply is completely interrupted during the time period t2.
- the temperature in the furnace chamber 6 is still well above the ignition temperature of the fuel / combustion air mixture.
- the burner assembly is switched to the second operating state by the fuel supply is opened and an ignitable fuel / combustion air mixture is formed in the chamber 4, this does not ignite in the chamber 4, since the temperature of the chamber 4 is below the Z ⁇ ndtemperatur of the mixture.
- combustion sets in, since the temperature of the furnace chamber is above the ignition temperature of the mixture. As long as the fuel supply is maintained, this combustion is maintained in the furnace chamber 6.
- 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)
Description
Claims
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 true EP1893915A1 (de) | 2008-03-05 |
EP1893915B1 EP1893915B1 (de) | 2011-08-03 |
Family
ID=36917359
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)
Country | Link |
---|---|
EP (1) | EP1893915B1 (de) |
AT (1) | ATE519076T1 (de) |
ES (1) | ES2369997T3 (de) |
PL (1) | PL1893915T3 (de) |
WO (1) | WO2006133880A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2442026A1 (de) * | 2010-10-15 | 2012-04-18 | Elster GmbH | Hochtemperaturbrenner für Brennerbetriebsverfahren mit zwei Betriebszuständen |
CN111819394A (zh) * | 2017-09-25 | 2020-10-23 | 北京中宇先创能源科技有限公司 | 燃烧器及其使用方法 |
Families Citing this family (5)
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. |
US9995481B2 (en) | 2011-12-20 | 2018-06-12 | Eclipse, Inc. | Method and apparatus for a dual mode burner yielding low NOx emission |
WO2015049428A1 (fr) * | 2013-10-02 | 2015-04-09 | Solios Carbone | Procede d'injection de combustible gazeux dans un four a chambres a feu(x) tournant(s) |
EP3242080B1 (de) | 2016-05-04 | 2019-07-10 | WS-Wärmeprozesstechnik GmbH | Vorrichtung und verfahren zur beheizung von öfen mittels strahlrohren |
Citations (1)
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DE19650973A1 (de) | 1996-12-09 | 1997-06-19 | Heinrich Dr Ing Koehne | Start- und Betriebsweise einer schadstoffarmen, an porösen Körpern stabilisierten Verbrennung flüssiger Brennstoffe |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
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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 |
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 |
-
2006
- 2006-06-12 EP EP06754305A patent/EP1893915B1/de not_active Revoked
- 2006-06-12 ES ES06754305T patent/ES2369997T3/es active Active
- 2006-06-12 WO PCT/EP2006/005617 patent/WO2006133880A1/de not_active Application Discontinuation
- 2006-06-12 AT AT06754305T patent/ATE519076T1/de active
- 2006-06-12 PL PL06754305T patent/PL1893915T3/pl unknown
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
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DE19650973A1 (de) | 1996-12-09 | 1997-06-19 | Heinrich Dr Ing Koehne | Start- und Betriebsweise einer schadstoffarmen, an porösen Körpern stabilisierten Verbrennung flüssiger Brennstoffe |
Non-Patent Citations (1)
Title |
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FRANZ VON ISSENDORFF: "Stabilisierung der Verbrennung an porosen Oberflachen am Beispiel eines Strahlungsbrenners fur flusige Brennstoffe", vol. 16, 2003, SHAKER VERLAG, AACHEN, ISBN: 3-8322-1556-9, ISSN: 1430-9629, article "Apparativer aufbau und Messtechnik", pages: 50 - 55, XP003024875 |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2442026A1 (de) * | 2010-10-15 | 2012-04-18 | Elster GmbH | Hochtemperaturbrenner für Brennerbetriebsverfahren mit zwei Betriebszuständen |
WO2012048954A1 (de) * | 2010-10-15 | 2012-04-19 | Elster Gmbh | Hochtemperaturbrenner für brennerbetriebsverfahren mit zwei betriebszuständen |
CN111819394A (zh) * | 2017-09-25 | 2020-10-23 | 北京中宇先创能源科技有限公司 | 燃烧器及其使用方法 |
EP3688373A4 (de) * | 2017-09-25 | 2021-04-21 | Beijing Zhongyu Topsun Energy Technology Co., Ltd. | Verbrenner und verfahren zur verwendung davon |
US11226094B2 (en) | 2017-09-25 | 2022-01-18 | Beijing Zhongyu Topsun Energy Technology Co., Ltd. | Burners and methods for use thereof |
Also Published As
Publication number | Publication date |
---|---|
EP1893915B1 (de) | 2011-08-03 |
ATE519076T1 (de) | 2011-08-15 |
PL1893915T3 (pl) | 2011-12-30 |
ES2369997T3 (es) | 2011-12-09 |
WO2006133880A1 (de) | 2006-12-21 |
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