CN106030210B - Pulse burner and operation method for buring solid fuel - Google Patents
Pulse burner and operation method for buring solid fuel Download PDFInfo
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- CN106030210B CN106030210B CN201480075633.7A CN201480075633A CN106030210B CN 106030210 B CN106030210 B CN 106030210B CN 201480075633 A CN201480075633 A CN 201480075633A CN 106030210 B CN106030210 B CN 106030210B
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- fuel
- spray gun
- air
- solid
- burner
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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
-
- 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
-
- 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
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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
- F23C2205/20—Pulsating combustion with pulsating oxidant supply
Abstract
The present invention relates to a kind of solid burner (1), for the combustion chamber (3) with exhaust outlet, the solid burner is used to burn solid comminution of fuel (10), there is the solid burner primary air to feed device and fuel infeed device, the primary air feeds device and the fuel feeds device for generating the air/fuel mixture formed by primary air (11) and fuel (10), the solid burner also has at least one spray gun (5), the spray gun carries out the stream of air/fuel mixture to be delivered to nozzle part opening (2).In order to run the solid burner (1) to reduce nitrogen oxides, the upstream of the nozzle part opening (2) is provided with control device (23), the control device reduces the NOx emission of the exhaust ports by running fuel included in air/fuel mixture (10) content in a pulsed fashion at any time.
Description
Technical field
It being used for burning solid comminution of fuel, combustion chamber solid burner the present invention relates to a kind of, and is related to one
There is primary air to feed device and fuel infeed device for method of the kind for running the solid burner, the solid burner,
To generate the air/fuel mixture formed by primary air and fuel, which also has at least one spray gun,
For air/fuel mixture to be delivered to nozzle part opening.
Background technology
005 438 A1 of patent application EP disclose a kind of light and are fed in gas carrier stream to the coal dust of combustion zone
Device and method and the device and method for maintaining the burning of coal dust to run.In order to improve the maintenance of igniting and burning, propose
The mixture of the oxygen changed within a preset range and coal fed to combustion zone.It is wanted in accordance with environment it does not disclose that generating
The mixture asked.
Austrian patent document number No.243167 discloses one kind and controls in combustion system and fire to realize intermittent combustion
The equipment of the infeed of material and burning air.
French patent documents No.795 933 discloses a kind of burner being arranged in the gas stream with coal dust,
Use two propellers freely relatively rotated to improve the uniformity of air/coal mixtures in the burner.
1 312 859 A1 of patent application EP disclose a kind of solid burner, wherein for example, the solid of lignite crushes
Fuel and primary air mixing, and be fed into combustion chamber in spray gun and burn there.In addition, for accelerated combustion,
Spray gun is introduced air by other infeed device.For example, as alternative energy resources is required, relative to the output to be obtained
This solid burner is changeably run, in other words, runs solid burner at a part-load condition sometimes.In the situation
Under, preferably fuel is adjusted in a manner of being sometimes associated with unstable igniting operation and generate unfinished combustion conditions feed.This leads
Nitrogen oxides (the NO of high pollution load, especially balloon score is causedx)。
Invention content
It is an object of the invention to research and develop the solid burner for having especially in fractional load scope and reducing discharge value.Separately
Outside, the purpose of the present invention is to provide a kind of method for running solid burner, this 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.In 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 of proposition preferably uses in the power station to be generated electricity by steam turbine, such as in combined heat and power factory
In.By the solid burner proposed and its operation method, less harmful substance can be generated, NO is especially reducedxConcentration,
Especially in partial load run, thus so that the integration in other words of operation homogenization during whole service.For example,
It can save in order to which utensil necessary to the part extreme value realizing and maintain legally to require is (such as in order to which the SCR of denitration is catalyzed
Agent), or these utensils are used with the degree of reduction, it is possible thereby to provide the operation mould of solid burner saved money
Formula.Solid burner is suitable for such situation, and fuel is transported to by the spray gun at nozzle part opening preferably in power generator
In combustion chamber.In this case, compared with grate firing (Rostfeuerung), wherein aflame low air excess
It will appear with the air ratio and 1200 DEG C or higher temperature for being, for example, 1.4, this generates high NOxConcentration, but pass through institute
Solid burner particularly effectively reduces NO under the said circumstances of propositionxConcentration.
Specifically, the solid burner proposed and its operation method are to the power generator band with oral pore burner
Following sub-goals are carried out：First, it can be achieved that the low CO emission levels with variable load.Meanwhile alternately or additionally for,
It 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 a quarter.In this case, the increase of combustion intensity can improve variable
To the heat transfer of evaporator under load.
Under the situation, during pulsing operation, if the turbulent burner used as solid burner is, it can be achieved that 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 the annular of surrounding is fed, can stablize the flame path of the turbulent burner.
It has been found that in the pulse frequency for for example providing solid burner when 0.5Hz is between 1Hz, this is that especially have
Profit.In the range, minimum NO is generated in almost constant low-level CO concentrationxDischarge.In addition to this, pulse frequency
Rate is related to the particle size of fuel and distribution of particles and its load, therefore present inventive concept contains pulse frequency to these
The relative adaptability of variation and in the frequency range respective change pulse frequency.
In addition to reducing load and discharge, in the case of using proposed solid burner, combustion intensity can be improved
With flame amount, it means that sizable improvement to heat transfer condition.In this large-scale combustion room, especially in the feelings of fractional load
It is an advantage under shape.
By the pulsing operation of the solid burner proposed, thus provided primary air and optional secondary can be led to
The delay of the oxidant of air and fuel forms mixes.This can cause the extension of flame body and can enhance heat in the thickness of flame
Conveying.In power generator operation, especially under partial load conditions, this is an important advantage.In the situation
Under reduce NOxGeneration, and improve combustion intensity and efficiency of combustion.
Particularly, include that primary air feeds dress for burning solid comminution of fuel, combustion chamber solid burner
It sets, such as the fan of flow control, suction ventilator.It is guided to be introduced into solid comminution of fuel in primary air feeds device
Primary air in, provide fuel feed device, for example monitor fuel volume and/or weight metering device, such as feed gear
Plate, metering axis, screw rod and/or similar devices.Fuel can be made of analogs such as lignite, hard coal, organic material, its mixtures.
Control unit is provided, volume unit of the metering device based on primary air by fuel and/or primary air, setting are used as
Fuel content in primary air, such as scheduled fuel quantity, that is, set the mixture of fuel and air.Pass through solid burner
At least one spray gun, such as metering or infeed pipe, feed channel, nozzle part opening is delivered to by air/fuel mixture.Nozzle part opening
It is opened wide in spherical, cylindrical or free-form combustion chamber, which has the igniter of air/fuel mixture,
Then after ignition, the flame that combustion chamber is extended into from nozzle part opening is generated, flame heating surrounds or be connected to combustion chamber
Evaporator, such as steam copper.Pass through exhaust outlet, such as chimney, chimney, the emission of discharge burning generation.In this case, exist
Upstream can connect a waste gas purification apparatus.By emission caused by reduction, such optional carry can be more efficiently run
The waste gas purification apparatus of confession.
In order to reduce emission, such as harmful substance load, especially NOx emission and CO emissions, at least in solid
In the fractional load scope of burner, control device can be provided in air/fuel mixture stream in the upstream of nozzle part opening, it should
Control device adjusts the fuel content being present in air/fuel mixing at any time in a pulsed fashion.It means that with the time
Passage, the fuel content in can mixing air/fuel is preset as can be changed in a manner of mechanical periodicity at any time.
In a preferred embodiment, such control device is provided, the combustion being consistently introduced into during air/fuel mixes
Material content is assembled and is consumed in a pulsed fashion.This control device for example can by nozzle part opening upstream arrangement on spray gun
Hydraulic barrier is formed, which receives from air/fuel mixture and discharge fuel in a pulsed fashion.Such as, it has proved that
It adjusts flow at this baffle to be advantageous, then due to the vortex on baffle, sedimentation of fuel is in the area with less influx
Domain, and the flow geometry changed due to the fuel according to deposition, the fuel of deposition are detached from again.Shy herein
It very finds, the design of the general flat of baffle can form this control device.It, can be by cloth such as in order to controllable register
Be set to it is movable compared to the spray gun of guiding air/fuel mixture wherein, such as in a manner of radially displaceable.Pass through this
Kind mode, the cross section of spray gun is for example designed to be adjusted by external machinery.Diffuser plate (baffle) can be activated automatically,
Such as the cross section relative to spray gun is radially or prejudicially displacement in the frame, the frame are fixed relative to spray gun.Outstanding
In its embodiment designed, in order to realize that pulse effects, diffuser plate can be controlled with preset frequency in an automated way, or it is logical
Frequency can be pre-adjusted by crossing electronic controller, if 0.5Hz is between 1Hz.
In the further advantageous research and development of the control device of the fuel content in assembling and consuming primary air, this can be used for
The metering of fuel is run in a pulsed fashion, this is because control device feeds to adjust with pulse mode at device in fuel enters one
The fuel of secondary air is fed.Thus, it is possible to provide corresponding metering device is entered primary with the pulses range metering of setting
Air stream cumulative and fuel quantity decrescence, to generate the pulse content of fuel.Thus, it has therefore proved that for example fuel feeds device
This control device is advantageous, and is equipped with the non-axis transmission formula screw rod for filling fuel in a pulsed fashion.In this case, example
Each case such as between two screw threads is measured different fuel quantities, and the screw rod rotated with constant rotational speed, then existed
At the inlet shaft of screw rod, the fuel quantity with time correlation is introduced into primary air flows.Alternatively, the range of the bung flange of screw rod
If axial distance can be determined size as follows, i.e., what the dose of fuel conveyed in a coil and next coil conveyed
Spacing is set between dose of fuel, and then each dose of fuel is introduced with the pulse frequency relative to time fork row primary empty 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 at any time in primary air flows.
Increase or consumption for fuel content are alternatively or additionally, it is possible to provide control device, in primary air
Feed the infeed that primary air is set at device with pulse mode.In this case, the dosage of fuel can be kept constant, or another
Outside, in order to promote pulse effects, the dosage of fuel can equally be executed in a pulsed fashion in same-phase.In this sense, it carries
For for enter primary air flows fuel pulse quantitative dosage corresponding control device and for the pulse of primary air flows
The control device of control.For the pulsing operation of primary air, control device can for example control corresponding air-supply in a pulsed fashion
Machine, primary air section, air flap, valve or the like.
In further advantageous embodiment, it is possible to provide another spray gun, another spray gun feed device with primary air
At least one spray gun it is coaxial, and for by gas identical as primary air flows or more high or low than primary air flows
Stream feeds fuel in air stream, the delivery analogs such as gas, wherein these spray guns it is at least one in, can be by pulse air
Body stream introduces nozzle part opening, and by least one spray gun, fuel can be introduced in through nozzle part opening in combustion chamber.
Further, it is possible to provide the arrangement of spray gun is preferably arranged for mutually coaxial, wherein introduce spray gun at least
A kind of fuel is coal, and for there are the situation of different fuel, and a kind of fuel is organic solid, preferably solid or solidification
And crushing biological mass-energy fuel.In this case, fine coal is advantageously with 50 μm to 110 μm of particle diameter distribution dp50.Such as
The alternative fuel mixed with coal or the additional fuel for example fed by independent spray gun can by a combust, such as until 20%
Stove calorific value, and with the d from 1mm to 4mmp50.Situation for the pluralities of fuel fed by independent spray gun, can be with arteries and veins
The mode of punching provides coal and/or the fuel of alternative fuel is fed.
The pulse frequency of verified setting fuel content is greater than or equal to 0.5Hz and is advantageous less than or equal to 1Hz.
In the method proposed, consolidating into combustion chamber can be measured in a pulsed fashion by using 0.5Hz to the frequency between 1Hz
Body, comminution of fuel and run the fuel burner in a pulsed fashion.Improving discharge of poisonous waste (especially nitrogen oxides)
Full-load run in, the method can provide the pulsing operation of solid burner.However, during partial load run, preferably
Only implement the method in a pulsed fashion, then solid burner is preferably only run in a pulsed fashion in fractional load scope.
Description of the drawings
The present invention is more fully described below in reference to exemplary embodiment shown in Fig. 1 to Fig. 6.In the accompanying drawings：
Fig. 1：The schematic side elevation of solid burner；
Fig. 2：Fuel feeds the schematic diagram of device；
Fig. 3：The block diagram of correlation between harmful substance and solid burner pulse frequency；
Fig. 4 a：To face the reduction part for the spray gun for illustrating guiding air/fuel mixture；
Fig. 4 b：It is showing along the reduction part of Fig. 4 a of cutting line A-A, there is the control device of attachment；
Fig. 4 c：The reduction part of Fig. 4 a and Fig. 4 b are shown with 3D views；
Fig. 5：The control device of Fig. 1 and Fig. 4 b is illustrated with schematic front view, wherein diffuser plate is faced out from the transversal of spray gun
It is driven out to；With
Fig. 6：The control device of Fig. 5 is illustrated with schematic front view, wherein diffuser plate drives into the cross section of spray gun.
Specific implementation mode
Fig. 1 is the schematic side elevation of solid burner 1, which is arranged in only shown partially and has
On the nozzle part opening 2 for having the combustion chamber 3 of lining 4.There are three spray guns 5,6,7 for the tool of solid burner 1, these spray guns 5,6,7 are with one
A another mode of encirclement is coaxially arranged and is mutually supported by means of space maintaining member 8,9, and by means of the spray
Rifle makes gas stream and fuel are introduced into combustion chamber 3 via nozzle part opening 2, and makes gas stream and fuel by means of being not shown
Igniter (such as ensuring the start-up burner of continuous burning operation) after-combustion for being ignited.The exemplary implementation shown in
In example, the fluidised solid fuel 10 for example from standpipe 26 (Fig. 2) (is shown with arrow 14 by primary air 11 and wherein
Go out) realize that primary air is fed (as arrow 12 indicates) by means of radially outer spray gun 5From
And fuel 10 is introduced in the form of annular gap at nozzle part opening 2.In central lance 5, in addition to institute in primary air 11
Including fuel 10 except, can will fluidised another solid fuel (such as the life of crushing in gas stream (such as air stream)
Substance energy fuel or the like) it is introduced into combustion chamber 3, this is indicated with arrow 13.The spray being radially positioned between spray gun 5,6
In rifle 7, it can will be introduced into combustion chamber 3 for the gas of flame support by another annular gap, this is indicated with arrow 15.
Solid burner 1 is configured to turbulent burner.For this purpose, spray gun 5,6,7 radially outer and around their edges
The direction for arrow 16 carries out the infeed of auxiliary air, wherein rotational flow generator 17 (such as ventilation blower runner or similar devices)
Air swirl is generated along the direction of arrow 19 on annular gap 18, so that the gas of spray gun 5,6,7 and The fuel stream exist
It tangentially is introduced in the form of mixing in combustion chamber 3 at nozzle part opening 2, this is indicated with arrow 20.
Particularly, in the fractional load scope of solid burner 1, fuel 10 is fed in a pulsed fashion, preferably with 0.5Hz
To the pulse frequency between 1Hz.For this purpose, in the illustrated exemplary embodiment, in spray gun 5, in the upstream of nozzle part opening 2,
Baffle 21 is introduced into flange 22.For the situation of above-mentioned primary air flows, fuel 10 is periodically assembled on baffle 21,
And it is detached from again after having been carried out aggregation, to which combustion chamber 3 is fed with 10 following content of fuel, the content is to be built
The pulse frequency cyclically-varying of view.According to another way of composing, pass through the fuel/air mixture set at baffle 21
Flow dynamic characteristic and fuel content is adjusted in a pulsed fashion.Pulse frequency and particle diameter distribution and with primary air flows
Load (i.e. in primary air 11 average content of fuel 10, the average content preferably shorter than typical fuel in full load
10 contents) it is related.For using coal as the situation of fuel 10, such as the particle diameter distribution d between 50 microns to 110 microns50
Have turned out to be advantageous.In this sense, baffle 21 forms control device 23, for being established in a pulsed fashion primary empty
Fuel content in gas 11.
The control device of the solid burner similar with for running solid burner 1 for example with Fig. 1 in a pulsed fashion
23 compare, and Fig. 2 shows the control device 23a of remodeling, control device 23a does not have baffle.Control device 23a is by metering device
24 form, which is introduced by the fuel quantity (such as fuel agent 25) that fuel 10 changes over time and leads to solid burner
Standpipe 26 in, primary air 11 is guided in the standpipe 26.For this purpose, metering device 24 is configured to non-axis transmission formula screw rod
27, which is rotated with preset rotating speed around rotation axis d.In this case, the bung flange 28 of screw rod 27 it
Between distance a so set so that in the case where screw rod 27 is generally filled up contiguously by the fuel agent entrained by a bung flange 28
25 and along the conveying direction be located at its before bung flange 28 between adjust setpoint distance b, be achieved in fuel agent 25 enter it is vertical
The addition changed over time in pipe 26.In this case, in order to obtain (such as the pulse of 10 content of fuel of desired frequency
Frequency is preferably within the scope of 0.5Hz to 1Hz), the rotating speed of screw rod 27 can adapt to primary air 11 with desired by fuel 10
Filling.If solid burner is run in the case where full load is run, since the fuel agent 25 between two bung flanges increases,
So distance b is equally filled by fuel 10, so that standpipe 26 is continuously fed with fuel 10 to realize.Fig. 3 show for example, by using
Block diagram measured by solid burner corresponding with Fig. 11, it illustrates the content c[ of the nitrogen oxides of exhaust gas;NOx]With an oxygen
Change the content c[ of carbon;CO]With the frequency F[ of the variable content of solid comminution of fuel 10;Hz]Relationship between (Fig. 1 and Fig. 2), it is described
Frequency F[Hz]E.g. 0 to the pulse frequency between 1.2Hz.In this embodiment, wide 31-35 indicates containing for nitrogen oxides
Amount, and fillet 36-40 indicates the content of carbon monoxide.The content of carbon monoxide is largely independently in frequency F
The low-level being related in the case that dry oxygen is 5 percents by volume (is, for example, 3mg/Nm3To 4mg/Nm3), to solid
Burner 1 run in a pulsed fashion will not negative influence to carbon monoxide have sufficiently low content.The exemplary reality shown in
It applies in example, in 31 frequency F=0 of item (situation for running solid burner 1 in a manner of non-pulse) to 35 frequency F=1.2Hz of item
In the range of, amount of nitrogen oxides is declined to become following minimum value --- here, particularly evident in frequency F=0.8 --- solid
In the case that volumetric combustion device 1 is run in a manner of non-pulse, the nitrogen oxygen in the case where being related to dry oxygen and being 5 percents by volume
Compound is for example more than 500mg/Nm3(item 31), until part is declined to become the 20% or less of the content：It is being related to dry oxygen
Nitrogen oxides is 120mg/Nm in the case of 5 percents by volume3(item 33).Block diagram 30 is based on：To with solid burner 1
The combustion chamber 3 of Fig. 1 measure.Under the conditions of other burning situations, the measured value of change may be formed, also, right
For minimum amount of nitrogen oxides, other frequencies may be advantageous.
Fig. 4 a to Fig. 4 c show the total figure of the reduction part 41 of the spray gun 5 of Fig. 1, wherein show mixed in face of air/fuel
The front view (Fig. 4 a) for closing the flow direction of object, shows control device 23 along cutting line A-A, with arrangement, edge
The longitudinal cross-section (Fig. 4 b) of flow direction, and shows 3D views (Fig. 4 c).Reduce part 41 to have there are two pipeline section 42,43,
These pipeline sections have different-diameter D1, D2 (such as being about 150mm and 70mm).On larger diameter D1, it is arranged for accommodating
Standpipe, opening 44 for example with diameter D3 (about 40mm to 45mm), air/fuel mixture is imported into spray gun
In 5 and it is subsequently introduced into combustion chamber 3.Opening 44 central point to the distance A1 between the end of pipeline section 42 be about 65mm.Pipe
Length L1, L2 of section 42,43 is about 115mm and 50mm.The length L3 of 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 are 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.In 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 the opening 47.Spray gun
6,7 annular gap 49 (only schematically showing herein) is defined on the end side flange 48 of pipeline section 43, air/fuel mixture is worn
It crosses the annular gap 49 and is directed to nozzle part opening 2 (Fig. 1).By the reduction part 41 of the above-mentioned type and configuration, air/fuel is mixed
It closes object and nozzle part opening 2 is transported to eddy flow, and realized and pulsed by control device 23, mode is that fuel can be at any time
Between the mode that changes be deposited on control device 23 and be carried again.It should be understood that the exemplary implementation with shown in
Example is compared, and the configuration of reduction part 41 can also have other sizes.
In the illustrated exemplary embodiment, control device 23 includes the diffuser plate 21 for having central opening 51, the diffusion
Plate 21 is configured to radially shift relative to flow axes ds between flange 22.21 phase of diffuser plate is set in order to adjust
Bias displacement for annular gap 49, is for example provided with adjusting bolt 50 herein.In the illustrated exemplary embodiment, it spreads
Plate 21 is by the closed upper part of annular gap 49, and the lower part of annular gap 49 keeps opening wide.Due to eddy flow, stretched into diffuser plate 21
Pulse balance is established between deposition and removal on to the surface F1 in annular gap 49.For example, in order to adjust described in setting
Balance, in order to adjust setting pulse frequency etc., surface F1 can adjust setting by the eccentric displacement of diffuser plate 21.
Fig. 5 and Fig. 6 shows under the situation (Fig. 5) that diffuser plate 21 does not project into annular gap 49 and stretches into
The view of the control device 23 of Fig. 1 and Fig. 4 b under to 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 (such as frame made of metal or the like).51 base of free open
The overall diameter of annular gap 49 is corresponded in sheet, the annular gap 49 is straight outside the spray gun 7 that inner radial is only schematically shown
Diameter is limited.It is not shown, according to Fig. 1, spray gun 6 is in 7 inner radial of spray gun.In Figure 5, diffusion hole plate 21 is pulled back,
To which entire annular gap 49 is opened.For example, it can be achieved that such tune in the full load operation of solid burner 1
Section setting (Fig. 1).According to Fig. 6, at least in partial load run, diffusion hole plate 21 is prejudicially moved into annular gap 49,
To which fuel to be fed in nozzle part opening 2 to (Fig. 1) in a pulsed fashion.Diffuser plate 21 can carry out manual by means of the bolt of Fig. 4 b
Ground shifts, or is automatically shifted by means of servo-driver thus.For example, surface F1 can by servo-driver according to
Setting is adjusted in following parameter：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 the like.
Reference numerals list
1 solid burner
2 nozzle part openings
3 combustion chambers
4 linings
5 spray guns
6 spray guns
7 spray guns
8 space maintaining members
9 space maintaining members
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 baffles (diffuser plate)
22 flanges
23 control devices
23a control devices
24 metering devices
25 fuel agent
26 standpipes
27 screw rods
28 bung flanges
30 block diagrams
31
32
33
34
35
36
37
38
39
40
41 reduction parts
42 pipeline sections
43 pipeline sections
44 openings
45 interludes
46 regions
47 openings
48 flanges
49 annular gaps
50 adjusting bolts
51 openings
A-A cutting lines
A1 distances
A distances
B distances
D1 diameters
D2 diameters
D3 diameters
D pivot centers
Ds flow axes
F frequencies
The surfaces F1
L1 length
L2 length
L3 length
L4 length
R1 radiuses
R2 radiuses
α opening angles
Claims (10)
1. a kind of solid burner (1), for the combustion chamber (3) with exhaust outlet, the solid burner is used for solid powder
There is primary air to feed device and fuel infeed device, the primary air for broken fuel (10) burning, the solid burner
It feeds device and the fuel feeds device and is used to generate the air/fuel mixing formed by primary air (11) and fuel (10)
Also there is at least one spray gun (5), the spray gun to convey the stream of air/fuel mixture for object, the solid burner
To nozzle part opening (2), wherein the upstream of the nozzle part opening (2) is provided with control device (23), the control device passes through
Fuel included in air/fuel mixture (10) content is run in a pulsed fashion at any time and reduces the exhaust ports
NOx emission；The control device (23,23a) will consistently introduce fuel (10) content during air/fuel mixes with arteries and veins
The mode of punching is assembled and is consumed；The control device (23) is formed by baffle (21), the baffle plate setting on the spray gun (5) simultaneously
And the fuel of air/fuel mixture (10) is received and is discharged in a pulsed fashion.
2. solid burner (1) according to claim 1, which is characterized in that the control device is in the primary air
It feeds and primary air infeed is adjusted in a pulsed fashion at device.
3. solid burner (1) according to claim 1 or 2, which is characterized in that in a pulsed fashion to fuel (10) content
The frequency of adjusting is greater than or equal to 0.5Hz and is less than or equal to 1Hz.
4. solid burner (1) according to claim 1 or 2, which is characterized in that by means of can be relative to the spray gun
(5) baffle (21) of displacement, by the cross-sectional configuration of the spray gun (5) at can adjust.
5. solid burner (1) according to claim 4, which is characterized in that the baffle (21) is with can be relative to described
The mode of spray gun (5) radial displacement is received in the frame.
6. solid burner (1) according to claim 1 or 2, which is characterized in that in order to generate eddy flow, in the control
The upstream of device is provided with reduction part (41), pipeline section (42), pipeline section with small diameter of the reduction part with major diameter
(43) and with the interlude (45) for compensating diameter difference therebetween, wherein be arranged on the pipeline section (42) with major diameter
It is useful for the opening (44) of air-supplied/fuel mixture.
7. solid burner (1) according to claim 1 or 2, which is characterized in that same at least one spray gun (5)
It is provided with to axis at least one other spray gun (6,7), for feeding gas stream, and at least one of described spray gun (5)
Fuel (10) is introduced the nozzle part opening (2) by spray gun in a pulsed fashion.
8. solid burner (1) according to claim 7, which is characterized in that at least one fuel (10) is coal, and
A kind of fuel is organic solid in the case of different fuel.
9. method of the one kind for running solid burner according to any one of claim 1 to 8 (1), wherein fuel
(10) it is metered into a pulsed fashion in the combustion chamber (3) with 0.5Hz to the frequency between 1Hz.
10. according to the method described in claim 9, it is characterized in that, the solid burner (1) is only in the partial load run phase
Between 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 CN106030210A (en) | 2016-10-12 |
| CN106030210B true 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 WO PCT/DE2014/100447 patent/WO2015090278A1/en active Application Filing
- 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
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 |
|---|---|
| DE102013114296A1 (en) | 2015-06-18 |
| PL3084300T3 (en) | 2018-11-30 |
| WO2015090278A1 (en) | 2015-06-25 |
| CN106030210A (en) | 2016-10-12 |
| EP3084300A1 (en) | 2016-10-26 |
| EP3084300B1 (en) | 2018-04-18 |
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