CN106030210A - Pulsation burner for the combustion of solid fuels, and method for the operation thereof - Google Patents
Pulsation burner for the combustion of solid fuels, and method for the operation thereof Download PDFInfo
- Publication number
- CN106030210A CN106030210A CN201480075633.7A CN201480075633A CN106030210A CN 106030210 A CN106030210 A CN 106030210A CN 201480075633 A CN201480075633 A CN 201480075633A CN 106030210 A CN106030210 A CN 106030210A
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- Prior art keywords
- fuel
- air
- burner
- solid
- spray gun
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D1/00—Burners for combustion of pulverulent fuel
- F23D1/02—Vortex burners, e.g. for cyclone-type combustion apparatus
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K3/00—Feeding or distributing of lump or pulverulent fuel to combustion apparatus
- F23K3/02—Pneumatic feeding arrangements, i.e. by air blast
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- 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
- F23C99/00—Subject-matter not provided for in other groups of this subclass
- F23C99/003—Combustion process using sound or vibrations
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
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- 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
- F23C2205/00—Pulsating combustion
- F23C2205/20—Pulsating combustion with pulsating oxidant supply
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K2203/00—Feeding arrangements
- F23K2203/20—Feeding/conveying devices
- F23K2203/201—Feeding/conveying devices using pneumatic means
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
The invention relates to a solids burner (1) for a combustion chamber (3) for the combustion of pulverised solid fuels (11), and to a method for the operation thereof, having a primary air feed device and a fuel feed device for producing an air/fuel mixture composed of primary air (11) and fuel (10), and having at least one lance (5) which transports the air/fuel mixture to a mouth opening (2). To enable the solids burner (1) to be operated with low nitrogen oxide emissions, there is provided upstream of the mouth opening (2) a control device (23) which adjusts a content of fuel (10) contained in the air/fuel mixture in pulsating fashion over time.
Description
Technical field
The present invention relates to a kind of for burning solid comminution of fuel, combustor solid burner, and relate to one
Planting the method for running this solid burner, this solid burner has primary air and feeds device and fuel infeed device,
In order to produce the air/fuel mixture formed by primary air and fuel, this solid burner also has at least one spray gun,
For air/fuel mixture is delivered to nozzle part opening.
Background technology
Patent application EP 005 438 A1 discloses a kind of lighting and feeds the coal dust to combustion zone in gas carrier stream
The equipment of the burning operation of equipment and method and maintenance coal dust and method.In order to improve igniting and the maintenance of burning, propose
The oxygen of change in preset range and the mixture of coal are fed to combustion zone.It does not disclose that generation is wanted in accordance with environment
The mixture asked.
Austrian patent document number No.243167 discloses a kind of control to realize intermittent combustion and fires in combustion system
The equipment of the infeed of material and combustion air.
French patent documents No.795 933 discloses a kind of burner being arranged in the gas stream with coal dust,
Use two freedom propellers in relative rotation to improve the uniformity of air/coal mixtures in this burner.
Patent application EP 1 312 859 A1 discloses the solid of a kind of solid burner, the most for example, brown coal and pulverizes
Fuel and primary air mixing, and be fed in spray gun to combustor and burn there.It addition, for accelerated combustion,
Spray gun is introduced air into by other infeed device.Such as, required for alternative energy resources, relative to output to be obtained
Run this solid burner changeably, in other words, run solid burner the most at a part-load condition.In this situation
Under, preferably in the way of being sometimes associated with the combustion conditions that unstable igniting operation generation is not fully complete, regulate fuel and feed.This leads
Cause the nitrogen oxides (NO of high pollution load, especially balloon scorex)。
Summary of the invention
It is an object of the invention to research and develop and especially there is in the range of fractional load the solid burner reducing discharge value.Separately
Outward, it is an object of the invention to provide a kind of method for running solid burner, the method can discharge less nuisance
Matter.
Above-mentioned purpose is realized by the theme of claim 1.It subclaims describes the theme of claim 1
Advantageous embodiment.It addition, above-mentioned purpose is realized by the theme of claim 12.The dependent claims of claim 13
Describe the advantageous embodiment of the method for claim 13.
The solid burner proposed preferably is used in the electric station generated electricity by steam turbine, such as in combined heat and power factory
In.Pass through proposed solid burner and its operation method, less harmful substance can be generated, especially reduce NOxConcentration,
Especially in the case of partial load run, thus make to run homogenization integration in other words during whole service.Such as,
Can save to realize and maintaining utensil necessary to the part extreme value required legally (as the SCR for denitration etc. is catalyzed
Agent), or use these utensils with the degree reduced, the operation mould of the saving expense of solid burner thus can be provided
Formula.Solid burner is suitable for such situation, and preferably in TRT, fuel is transported to by the spray gun at nozzle part opening
In combustor.In this case, compared with grate firing (Rostfeuerung), wherein, aflame low air excess
There will be have the air of for example, 1.4 than and 1200 DEG C or higher temperature, this generates high NOxConcentration, but pass through institute
Under the said circumstances proposed, solid burner particularly effectively reduces NOxConcentration.
Specifically, the solid burner proposed and its operation method TRT band to having oral pore burner
Carry out following sub-goal: first, the low CO emission level with variable load can have been realized.Meanwhile, alternately or additionally for,
Can be by pulsing operation by the NO under variable load situationxDischarge is declined to become low NOxConcentration, such as less than in other conditions all phases
The NO of non-pulse solid burner simultaneouslyxConcentration 1/4th.In this case, the increase of combustion intensity can improve variable
To the heat transfer of vaporizer under load.
Under this situation, during pulsing operation, if using the turbulent burner as solid burner, can realize especially
Perfect flame holding, wherein, the annularly flow fed by fuel and primary air, such as by being arranged in nozzle part opening
The auxiliary air charging that annular around feeds, can stablize the flame path of this turbulent burner.
The when of having been found that between such as providing the pulse frequency of solid burner at 0.5Hz to 1Hz, this is especially to have
Profit.Within the range, minimum NO is produced when the most constant low-level CO concentrationxDischarge.In addition, pulse frequency
Rate and the particle size of fuel and distribution of particles and its load are relevant, and therefore present inventive concept contains pulse frequency to these
Change relative adaptability and in described frequency range the pulse frequency of respective change.
In addition to reducing load and discharge, when using the solid burner proposed, combustion intensity can be improved
With flame amount, it means that the sizable improvement to heat transfer condition.In this large-scale combustion room, especially in the feelings of fractional load
Under shape, it is an advantage.
The pulsing operation of the solid burner owing to being proposed, thus provided primary air and optional secondary are provided
The delay mixing of the oxidant of air and fuel forms.This can cause the extension of flame body and can strengthen heat in the thickness of flame
Conveying.In TRT runs, especially under partial load conditions, this is an important advantage.In this situation
Under reduce NOxGeneration, and improve combustion intensity and efficiency of combustion.
Especially, comprise primary air for burning solid comminution of fuel, combustor solid burner and feed dress
Put, such as the fan of flow-control, induced-draught fan etc..Guided in primary air feeds device in order to solid comminution of fuel is introduced
Primary air in, it is provided that fuel feed device, such as monitor the volume of fuel and/or the metering device of weight, as feed keep off
Plate, metering axle, screw rod and/or similar devices.Fuel can be made up of analog such as brown coal, hard coal, organic material, its mixture.
Thering is provided control unit, it is used as to rely on fuel and/or the metering device volume unit based on primary air of primary air, sets
Fuel content in primary air, such as predetermined fuel quantity, i.e. sets fuel and the mixture of air.By solid burner
At least one spray gun, such as metering or infeed pipe, feed channel etc., is delivered to nozzle part opening by air/fuel mixture.Nozzle part opening
Opening wide in spherical, cylindrical or free-form combustor, this combustor has the igniter of air/fuel mixture,
The most after ignition, generating the flame extending into combustor from nozzle part opening, this flame heats around or is connected to combustor
Vaporizer, such as steam kettle.By air vent, such as chimney, chimney etc., discharge the emission that burning produces.In this case, exist
Upstream can connect a waste gas purification apparatus.By reducing produced emission, can more efficiently run such optional carry
The waste gas purification apparatus of confession.
In order to reduce emission, such as harmful substance load, especially NOx emission and CO emission, at least at solid
In the range of the fractional load of burner, control device can be provided in air/fuel mixture stream in the upstream of nozzle part opening, should
Control device and regulate the fuel content being present in air/fuel mixing the most in time.It means that over time
Passage, can by air/fuel mix in fuel content be preset as in the way of mechanical periodicity in time variable.
In a preferred embodiment, it is provided that such control device, its combustion that will be incorporated into consistently in air/fuel mixing
Material content is assembled in a pulsed fashion and consumes.This control device such as can be by the upstream arrangement at nozzle part opening on spray gun
Hydraulic barrier is formed, and this baffle plate receives from air/fuel mixture and release fuel in a pulsed fashion.Such as, it has proved that
It is favourable for regulating flow at this baffle plate, and then due to the eddy current on baffle plate, sedimentation of fuel has the district of less influx
Territory, and the flow geometry changed due to the fuel according to deposition, the fuel of deposition departs from again.Shy
Very finding, the design of the general flat of baffle plate can form this control device.Such as in order to controllable register, it can be by cloth
It is set to the spray gun compared to guiding air/fuel mixture wherein movable, such as in the way of radially displaceable.By this
The mode of kind, the cross section of spray gun is such as designed to be adjusted by outside machinery.Diffuser plate (baffle plate) can automatically be activated,
Such as relative to spray gun cross section radially or displacement the most in the frame, this framework is fixed relative to spray gun.Especially
In the embodiment of its design, in order to realize pulse effects, diffuser plate can be controlled with preset frequency in an automated way, or logical
Cross electronic controller and can pre-adjust frequency, as between 0.5Hz to 1Hz.
In the most favourable research and development controlling device of the fuel content assembled and consume in primary air, this can be used for
Run the metering of fuel in a pulsed fashion, this is because control device to regulate entrance one in a pulsed fashion at fuel infeed device
The fuel of secondary air feeds.To this end, corresponding metering device can be provided, it enters once with the pulses range metering arranged
Air stream cumulative and fuel quantity decrescence, to produce the pulse content of fuel.To this end, be proved such as fuel to feed device
This control device is favourable, and it is equipped with the non-axis transmission formula screw rod filling fuel in a pulsed fashion.In this case, example
Such as every kind of situation between two screw threads, measure different fuel quantities, and the screw rod rotated with constant rotational speed, then exist
At the inlet shaft of screw rod, the fuel quantity with time correlation is introduced in primary air flows.Alternatively, the scope of the bung flange of screw rod
As axial distance can be determined size as follows, i.e. in dose of fuel and the next coil conveying of a coil conveying
Setting space between dose of fuel, then each dose of fuel introduces once empty with the pulse frequency relative to time fork row respectively
In air-flow.Alternatively, screw rod can be filled uniformly with, and its rotating speed can be controlled in a time-varying manner.Pass through
This mode, it is possible to provide the fuel content of mechanical periodicity in time in primary air flows.
For fuel content increase or consume alternatively or additionally, it is possible to provide control device, it is at primary air
Feed the infeed that primary air is set at device in a pulsed fashion.In this case, the dosage of fuel can keep constant, or separately
Outward, in order to promote pulse effects, the dosage of fuel can be performed equally in a pulsed fashion at same phase.In this sense, carry
The corresponding of pulse quantitative dosage for the fuel for entering primary air flows controls device and the pulse for primary air flows
The control device controlled.For the pulsing operation of primary air, control device and can the most such as control to blow accordingly
Machine, primary air cross section, air flap, valve or the like.
In further advantageous embodiment, it is possible to provide another spray gun, this another spray gun feeds device with having primary air
At least one spray gun described coaxial, and for by identical with primary air flows or more high or low than primary air flows gas
Flow and feed fuel in the analog such as air stream, delivery gas, wherein, at least one of these spray guns, can be by pulse air
Body stream introduces nozzle part opening, and by least one spray gun, fuel can be in nozzle part opening be introduced in combustor.
Further, it is possible to provide the arrangement of spray gun, it is preferably arranged for the most coaxial, wherein, introduces spray gun at least
A kind of fuel is coal, and for there is the situation of different fuel, a kind of fuel is organic solid, preferably solid or solidification
And pulverize biological mass-energy fuel.In this case, fine coal advantageously has the particle diameter distribution d of 50 μm to 110 μmp50.Such as
The alternative fuel that mixes with coal or the additional fuel that such as fed by independent spray gun can be by combust, such as until 20%
Stove caloric value, and there is the d from 1mm to 4mmp50.The situation of the pluralities of fuel for being fed by independent spray gun, can be with arteries and veins
The mode of punching provides the fuel of coal and/or alternative fuel to feed.
It is favourable for having turned out and arranging the pulse frequency of fuel content more than or equal to 0.5Hz and less than or equal to 1Hz.
In the method proposed, consolidating of combustor can be entered by using the frequency between 0.5Hz to 1Hz to measure in a pulsed fashion
Body, comminution of fuel and run described fuel burner in a pulsed fashion.Improving discharge of poisonous waste (especially nitrogen oxides)
Full-load run in, described method can provide the pulsing operation of solid burner.But, during partial load run, preferably
Implementing described method the most in a pulsed fashion, then solid burner is run in fractional load scope the most in a pulsed fashion.
Accompanying drawing explanation
It is more fully described the present invention below in reference to the exemplary embodiment shown in Fig. 1 to Fig. 6.In the accompanying drawings:
The schematic side elevation of Fig. 1: solid burner；
Fig. 2: fuel feeds the schematic diagram of device；
The block diagram of mutual relation between Fig. 3: harmful substance and solid burner pulse frequency；
Fig. 4 a: illustrate the reduction part of the spray gun guiding air/fuel mixture with front view；
Fig. 4 b: be showing along the reduction part of Fig. 4 a of cutting line A-A, it has the control device of attachment；
Fig. 4 c: illustrate the reduction part of Fig. 4 a and Fig. 4 b with 3D view；
Fig. 5: illustrate the control device of Fig. 1 and Fig. 4 b with schematic front view, wherein, diffuser plate is outside from the cross section of spray gun
Roll away from；With
Fig. 6: illustrate the control device of Fig. 5 with schematic front view, wherein, diffuser plate sails the cross section of spray gun into.
Detailed description of the invention
Fig. 1 is the schematic side elevation of solid burner 1, and this solid burner 1 is arranged in the most shown partially and has
Have on the nozzle part opening 2 of combustor 3 of lining 4.Solid burner 1 has three spray guns 5,6,7, and these spray guns 5,6,7 are with one
Another mode of individual encirclement is coaxially arranged and mutually supports by means of space maintaining member 8,9, and by means of described spray
Rifle makes gas stream and fuel be incorporated in combustor 3 via nozzle part opening 2, and makes gas stream and fuel by means of not shown
The ignited after-combustion of igniter (such as guaranteeing the start-up burner that continuous burning runs).In shown exemplary enforcement
In example, primary air 11 and the most fluidised such as solid fuel 10 from standpipe 26 (Fig. 2) (are shown with arrow 14
Go out) realize primary air infeed by means of radially outer spray gun 5 (as arrow 12 represents)From
And fuel 10 is introduced at nozzle part opening 2 with the form of annular gap.In central lance 5, except institute in primary air 11
Outside the fuel 10 comprised, can be by fluidised another solid fuel (life such as pulverized in gas stream (such as air stream)
Material energy fuel or the like) it is incorporated in combustor 3, this represents with arrow 13.It is radially positioned the spray between spray gun 5,6
In rifle 7, can be incorporated in combustor 3 by the gas that be used for flame support by another annular gap, this represents with arrow 15.
Solid burner 1 is configured to turbulent burner.To this end, at the radially outer of spray gun 5,6,7 and around they edges
The direction arrow 16 carries out the infeed of auxiliary air, wherein, rotational flow generator 17 (such as ventilation blower runner or similar devices)
On annular gap 18, the direction along arrow 19 produces air swirl, so that the gas of spray gun 5,6,7 and fuel stream exist
Tangentially being introduced in combustor 3 with the form of mixing at nozzle part opening 2, this represents with arrow 20.
Especially, in the range of the fractional load of solid burner 1, feed fuel 10 in a pulsed fashion, preferably with 0.5Hz
Pulse frequency between 1Hz.To this end, in the illustrated exemplary embodiment, in spray gun 5, in the upstream of nozzle part opening 2,
Baffle plate 21 is incorporated in flange 22.For the situation of above-mentioned primary air flows, fuel 10 is periodically assembled on baffle plate 21,
And departing from again after having been carried out assembling, thus combustor 3 feeds with the following content of fuel 10, this content is to be built
The pulse frequency cyclically-varying of view.According to another way of composing, by the fuel/air mixture set by baffle plate 21
Flow dynamic characteristic and fuel content is regulated in a pulsed fashion.The distribution of pulse frequency and particle diameter and with primary air flows
(i.e. the average content of fuel 10 in primary air 11, this average content is preferably shorter than typical fuel when full load in load
10 content) relevant.For using coal as the situation of fuel 10, the such as particle diameter distribution d between 50 microns to 110 microns50
Have turned out to be favourable.In this sense, baffle plate 21 is formed and controls device 23, for setting up in a pulsed fashion once empty
Fuel content in gas 11.
With the control device for running such as similar with the solid burner 1 of Fig. 1 solid burner in a pulsed fashion
23 compare, and Fig. 2 shows that the control device 23a of remodeling, this control device 23a do not have baffle plate.Control device 23a by metering device
24 are formed, and time dependent for fuel 10 fuel quantity (such as fuel agent 25) is incorporated into and leads to solid burner by this metering device 24
Standpipe 26 in, primary air 11 is directed in this standpipe 26.To this end, metering device 24 is configured to non-axis transmission formula screw rod
27, this non-axis transmission formula screw rod 27 rotates around rotary shaft d with default rotating speed.In this case, the bung flange 28 of screw rod 27 it
Between distance a so set so that by the fuel agent entrained by a bung flange 28 in the case of screw rod 27 is generally filled up contiguously
25 and along regulating setpoint distance b between direction of transfer bung flange 28 before it, it is achieved in fuel agent 25 and enters into vertical
Time dependent interpolation in pipe 26.In this case, in order to obtain (the such as pulse of fuel 10 content of desired frequency
Frequency is preferably in the range of 0.5Hz to 1Hz), the rotating speed of screw rod 27 can adapt to primary air 11 along with desired by fuel 10
Filling.If solid burner is run in the case of full load is run, owing to the fuel agent 25 between two bung flanges increases,
So distance b is filled by fuel 10 equally, thus realizes making standpipe 26 feed continuously with fuel 10.Fig. 3 show for example with
Block diagram measured by solid burner 1 corresponding with Fig. 1, it illustrates the content c [NO of the nitrogen oxides of waste gasx] and an oxygen
Change the relation between frequency F [Hz] (Fig. 1 and Fig. 2) of the content c [CO] of carbon and the variable content of solid comminution of fuel 10, described
Pulse frequency between frequency F [Hz] e.g. 0 to 1.2Hz.In this embodiment, wide bar 31-35 represents containing of nitrogen oxides
Amount, and fillet 36-40 represents the content of carbon monoxide.The content of carbon monoxide is largely independently in frequency F
Relating to dry oxygen is low-level (for example, 3mg/Nm in the case of 5 percents by volume3To 4mg/Nm3), thus solid
Burner 1 runs in a pulsed fashion negative influence will not have of a sufficiently low content to carbon monoxide.In shown exemplary reality
Execute in example, in bar 31 frequency F=0 (i.e. running the situation of solid burner 1 in non-pulse mode) to bar 35 frequency F=1.2Hz
In the range of, amount of nitrogen oxides is declined to become following minima here, particularly evident solid when frequency F=0.8
In the case of body burner 1 runs in non-pulse mode, relating to nitrogen oxygen in the case of dry oxygen is 5 percents by volume
Compound is such as more than 500mg/Nm3(bar 31), until part is declined to become less than the 20% of this content: relating to dry oxygen be
In the case of 5 percents by volume, nitrogen oxides is 120mg/Nm3(bar 33).Column Figure 30 based on: to having solid burner 1
The combustor 3 of Fig. 1 measure.Under the conditions of other burning situation, the measured value of change may be formed, and, right
For minimum amount of nitrogen oxides, other frequency may be favourable.
Fig. 4 a to Fig. 4 c shows total figure of the reduction part 41 of the spray gun 5 of Fig. 1, wherein, it is shown that mix in face of air/fuel
The front view (Fig. 4 a) of the flow direction of compound, it is shown that along cutting line A-A, there is layout control device 23, edge
The longitudinal cross-section (Fig. 4 b) of flow direction, and show 3D view (Fig. 4 c).Reduction part 41 has two pipeline sections 42,43,
These pipeline sections have different-diameter D1, D2 (being such as about 150mm and 70mm).In larger diameter D1, it is provided for accommodating
Standpipe, the opening 44 such as with diameter D3 (about 40mm to 45mm), in order to import to spray gun by air/fuel mixture
In 5 and be subsequently introduced in combustor 3.The central point of opening 44 to pipeline section 42 end between distance A1 be about 65mm.Pipe
Length L1 of section 42,43, L2 are about 115mm and 50mm.Length L3 of the interlude 45 between above-mentioned two pipeline section 42,43 is about
For 140mm.Radius R1, R2 of changeover portion between pipeline section 42,43 and interlude 45 is 80mm and 90mm.The opening of interlude 45
Angle [alpha] is 30 °.Between above-mentioned two radius R1, R2, it is provided with the frusto-conical region 46 that length L4 is about 33mm.At pipeline section
End on 42, is provided with the opening 47 coaxial with flow axes ds, and spray gun 6,7 (Fig. 1) is directed across this opening 47.Spray gun
6,7 defining annular gap 49 (being diagrammatically only by property illustrates at this) on the side flange 48 of pipeline section 43, air/fuel mixture is worn
Cross this annular gap 49 and be directed to nozzle part opening 2 (Fig. 1).By the reduction part 41 of the above-mentioned type and configuration, air/fuel mixes
Compound is transported to nozzle part opening 2 with eddy flow, and realizes pulsation by controlling device 23, and its mode is, fuel can be with at any time
Between change mode be deposited over control device 23 on and be carried.It should be appreciated that with shown exemplary enforcement
Example is compared, and the configuration of reduction part 41 also can have other size.
In the illustrated exemplary embodiment, the diffuser plate 21 that device 23 includes having central opening 51, this diffusion are controlled
Plate 21 is configured to can radially shift relative to flow axes ds between flange 22.In order to regulate this diffuser plate 21 phase of setting
For the eccentric displacement of annular gap 49, such as it is provided with regulation bolt 50 at this.In the illustrated exemplary embodiment, diffusion
Plate 21 is by the closed upper part of annular gap 49, and the bottom of annular gap 49 keeps opening wide.Due to eddy flow, stretch at diffuser plate 21
The deposition on the F1 of surface in annular gap 49 and establish pulse balance between removing.Such as, described in order to regulate setting
Balance, in order to regulate setting pulse frequency etc., surface F1 can regulate setting by the eccentric displacement of diffuser plate 21.
Fig. 5 and Fig. 6 shows under the situation (Fig. 5) in diffuser plate 21 does not projects into annular gap 49 and stretches into
The view controlling device 23 of Fig. 1 and Fig. 4 b under the situation (Fig. 6) of the adjusted setting surface F1 in annular gap 49.Expand
Falling apart 21, be provided in can radial displacement in flange 22 (framework being such as made of metal or the like).Free open 51 base
Corresponding to the overall diameter of annular gap 49 in basis, this annular gap 49 is outer straight by the spray gun 7 shown in being diagrammatically only by property in inner radial
Footpath is limited.Being shown without, according to Fig. 1, spray gun 6 is in spray gun 7 inner radial.In Figure 5, diffusion hole plate 21 is pulled back,
Thus whole annular gap 49 is opened.Such as, in the full load of solid burner 1 is run, such tune can be realized
Joint sets (Fig. 1).According to Fig. 6, at least in partial load run, diffusion hole plate 21 is moved in annular gap 49 prejudicially,
Thus fuel is fed in a pulsed fashion (Fig. 1) in nozzle part opening 2.Diffuser plate 21 can be carried out manually by means of the bolt of Fig. 4 b
Ground displacement, or automatically shift by means of servo-driver for this.Such as, surface F1 can by servo-driver according to
Following parameter is adjusted setting: the stream of air/fuel mixture, the particle size of fuel, (air/fuel mixture) stream
In fuel content, NOxAnd/or the waste gas content of CO, load running and/or like this.
Reference numerals list
1 solid burner
2 nozzle part openings
3 combustor
4 linings
5 spray guns
6 spray guns
7 spray guns
8 space maintaining member
9 space maintaining member
10 fuel
11 primary airs
12 arrows
13 arrows
14 arrows
15 arrows
16 arrows
17 rotational flow generators
18 annular gaps
19 arrows
20 arrows
21 baffle plates (diffuser plate)
22 flanges
23 control device
23a controls device
24 metering devices
25 fuel agent
26 standpipes
27 screw rods
28 bung flanges
30 block diagrams
Article 31,
Article 32,
Article 33,
Article 34,
Article 35,
Article 36,
Article 37,
Article 38,
Article 39,
Article 40,
41 reduction parts
42 pipeline sections
43 pipeline sections
44 openings
45 interludes
46 regions
47 openings
48 flanges
49 annular gaps
50 regulation bolts
51 openings
A-A cutting line
A1 distance
A distance
B distance
D1 diameter
D2 diameter
D3 diameter
D pivot center
Ds flow axes
F frequency
F1 surface
L1 length
L2 length
L3 length
L4 length
R1 radius
R2 radius
α opening angle
Claims (14)
1. a solid burner (1), for having the combustor (3) of air vent, described solid burner is for by solid powder
Broken fuel (10) burns, and described solid burner has primary air and feeds device and fuel infeed device, described primary air
Feed device and described fuel feeds device for producing the air/fuel mixing formed by primary air (11) and fuel (10)
Thing, described solid burner also has at least one spray gun (5), and the stream of air/fuel mixture is carried by described spray gun
To nozzle part opening (2), it is characterised in that be provided with control device (23) in the upstream of described nozzle part opening (2), described control fills
Put by fuel (10) content included in air/fuel mixture is run the most in a pulsed fashion and reduces described row
NOx emission at QI KOU.
Solid burner the most according to claim 1 (1), it is characterised in that described control device (23,23a) is by constant
Be incorporated into air/fuel mixing in fuel (10) content assemble in a pulsed fashion and consume.
Solid burner the most according to claim 1 and 2 (1), it is characterised in that described control device is described once empty
Gas feeds at device to feed primary air and regulates in a pulsed fashion.
Solid burner the most according to any one of claim 1 to 3 (1), it is characterised in that described control device
(23a) at described fuel infeed device, the fuel infeed in primary air is regulated in a pulsed fashion.
Solid burner the most according to any one of claim 1 to 4 (1), it is characterised in that to fuel (10) content with
The frequency (F) of pulse mode regulation is more than or equal to 0.5Hz and less than or equal to 1Hz.
Solid burner the most according to any one of claim 1 to 5 (1), it is characterised in that described control device (23)
Being formed by baffle plate (21), described baffle plate is arranged on described spray gun (5) above and by the fuel (10) of air/fuel mixture with arteries and veins
The mode of punching receives and discharges.
Solid burner the most according to claim 6 (1), it is characterised in that by means of can be relative to described spray gun (5) position
The baffle plate (21) moved, can regulate the cross-sectional configuration one-tenth of described spray gun (5).
Solid burner the most according to claim 7 (1), it is characterised in that described baffle plate (21) is with can be relative to described
The mode of spray gun (5) radial displacement is received in framework.
Solid burner the most according to any one of claim 1 to 8 (1), it is characterised in that in order to produce eddy flow,
The upstream of described control device be provided with reduction part (41), this reduction part have major diameter (D1) pipeline section (42), have less
The pipeline section (43) of diameter (D2) and have the interlude (45) compensating diameter difference therebetween, wherein, has major diameter described
(D1) opening (44) for air-supplied/fuel mixture it is provided with on pipeline section (42).
Solid burner the most according to any one of claim 1 to 9 (1), it is characterised in that described control device
(23a) being fed device by fuel to be formed, it is shaftless equipped with fed in a pulsed fashion by fuel (10) that described fuel feeds device
Driven type screw rod (27).
11. solid burner according to any one of claim 1 to 10 (1), it is characterised in that with described at least one
Spray gun (5) is coaxially disposed at least one other spray gun (6,7), is used for feeding in gas stream, and described spray gun (5)
Fuel (10) is introduced described nozzle part opening (2) by least one spray gun in a pulsed fashion.
12. solid burner according to claim 11 (1), it is characterised in that at least one fuel (10) is coal, and
In the case of different fuel, a kind of fuel is organic solid.
13. 1 kinds, for running the method according to the solid burner (1) according to any one of claim 1 to 12, wherein, fire
Material (10) is metered in described combustor (3) in a pulsed fashion with the frequency between 0.5Hz to 1Hz.
14. methods according to claim 13, it is characterised in that described solid burner (1) is only in partial load run
Period is run in a pulsed fashion.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102013114296.6 | 2013-12-18 | ||
| DE102013114296.6A DE102013114296A1 (en) | 2013-12-18 | 2013-12-18 | Pulsation burner for burning solid fuels and method for its operation |
| PCT/DE2014/100447 WO2015090278A1 (en) | 2013-12-18 | 2014-12-15 | Pulsation burner for the combustion of solid fuels, and method for the operation thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106030210A true CN106030210A (en) | 2016-10-12 |
| CN106030210B CN106030210B (en) | 2018-10-23 |
Family
ID=52544234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480075633.7A Active CN106030210B (en) | 2013-12-18 | 2014-12-15 | Pulse burner and operation method for buring solid fuel |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP3084300B1 (en) |
| CN (1) | CN106030210B (en) |
| DE (1) | DE102013114296A1 (en) |
| PL (1) | PL3084300T3 (en) |
| WO (1) | WO2015090278A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102014015546B4 (en) | 2014-10-22 | 2019-08-14 | Schenck Process Europe Gmbh | Burner for combustion of solid fuels and processes |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2945459A (en) * | 1953-05-23 | 1960-07-19 | Babcock & Wilcox Co | Pulsating combustion method and apparatus |
| GB1515094A (en) * | 1975-09-17 | 1978-06-21 | Monier Concrete Ind | Method and apparatus for the combustion of crushed solid fuels |
| EP0005438A1 (en) * | 1978-05-16 | 1979-11-28 | Combustion Engineering, Inc. | Method and apparatus for ignition and sustaining combustion of pulverized coal |
| US4846665A (en) * | 1987-10-23 | 1989-07-11 | Institute Of Gas Technology | Fuel combustion |
| CN1145466A (en) * | 1995-05-04 | 1997-03-19 | 福斯特惠勒能源公司 | Acoustically pulsating burner with integral adjustable sondhauss thermoacoustic elements |
| CN202709098U (en) * | 2012-05-07 | 2013-01-30 | 石磊 | Pulverized coal combustor convenient to adjust on line |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR795933A (en) * | 1935-10-03 | 1936-03-25 | Electricite De Paris Soc D | Rotary mixer for pulverized coal burners |
| US3178063A (en) | 1962-07-25 | 1965-04-13 | Jr Herbert F Cox | Liners |
| AT253167B (en) * | 1962-12-24 | 1967-03-28 | Junkers & Co | Device for controlling the supply of fuel and combustion air in burner systems for pulsating combustion |
| CA2625463C (en) | 2001-11-16 | 2011-03-08 | Hitachi, Ltd. | Solid fuel burner, burning method using the same, combustion apparatus and method of operating the combustion apparatus |
-
2013
- 2013-12-18 DE DE102013114296.6A patent/DE102013114296A1/en not_active Withdrawn
-
2014
- 2014-12-15 EP EP14838778.0A patent/EP3084300B1/en active Active
- 2014-12-15 CN CN201480075633.7A patent/CN106030210B/en active Active
- 2014-12-15 PL PL14838778T patent/PL3084300T3/en unknown
- 2014-12-15 WO PCT/DE2014/100447 patent/WO2015090278A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2945459A (en) * | 1953-05-23 | 1960-07-19 | Babcock & Wilcox Co | Pulsating combustion method and apparatus |
| GB1515094A (en) * | 1975-09-17 | 1978-06-21 | Monier Concrete Ind | Method and apparatus for the combustion of crushed solid fuels |
| EP0005438A1 (en) * | 1978-05-16 | 1979-11-28 | Combustion Engineering, Inc. | Method and apparatus for ignition and sustaining combustion of pulverized coal |
| US4846665A (en) * | 1987-10-23 | 1989-07-11 | Institute Of Gas Technology | Fuel combustion |
| CN1145466A (en) * | 1995-05-04 | 1997-03-19 | 福斯特惠勒能源公司 | Acoustically pulsating burner with integral adjustable sondhauss thermoacoustic elements |
| CN202709098U (en) * | 2012-05-07 | 2013-01-30 | 石磊 | Pulverized coal combustor convenient to adjust on line |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2015090278A1 (en) | 2015-06-25 |
| EP3084300A1 (en) | 2016-10-26 |
| EP3084300B1 (en) | 2018-04-18 |
| CN106030210B (en) | 2018-10-23 |
| DE102013114296A1 (en) | 2015-06-18 |
| PL3084300T3 (en) | 2018-11-30 |
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