CN106287673A - There is w-type combustion boiler and the control method thereof of thermoelectricity motility regulatory function - Google Patents
There is w-type combustion boiler and the control method thereof of thermoelectricity motility regulatory function Download PDFInfo
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- CN106287673A CN106287673A CN201610648477.XA CN201610648477A CN106287673A CN 106287673 A CN106287673 A CN 106287673A CN 201610648477 A CN201610648477 A CN 201610648477A CN 106287673 A CN106287673 A CN 106287673A
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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
- F23C5/00—Disposition of burners with respect to the combustion chamber or to one another; Mounting of burners in combustion apparatus
- F23C5/08—Disposition of burners
- F23C5/28—Disposition of burners to obtain flames in opposing directions, e.g. impacting flames
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N1/00—Regulating fuel supply
- F23N1/02—Regulating fuel supply conjointly with air 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
- F23C2201/00—Staged combustion
- F23C2201/10—Furnace staging
- F23C2201/101—Furnace staging in vertical direction, e.g. alternating lean and rich zones
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2237/00—Controlling
- F23N2237/02—Controlling two or more burners
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2239/00—Fuels
- F23N2239/02—Solid fuels
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Abstract
The present invention relates to a kind of w-type combustion boiler with thermoelectricity motility regulatory function and control method thereof, it is characterized in that, burner can be divided into face arch burner and rear arch burner by installation site and type, it is characterized in that: face arch burner includes face arch ordinary burner, face arch peak regulation burner, rear arch burner includes rear arch ordinary burner, rear arch peak regulation burner, arranges one or two face arch peak regulation burner at interval of one or two face arch ordinary burner in described face arch burner；Rear arch burner arranges one or two rear arch peak regulation burner at interval of one or two rear arch ordinary burner；And rear arch peak regulation burner is corresponding with face arch ordinary burner, rear arch ordinary burner is corresponding with face arch peak regulation burner；Provide the benefit that: thermoelectricity operational flexibility and the fuel flexibility of boiler can be improved, boiler for deeply peak modulation capacity is improved prominent, there is quick climbing capacity, and can quickly open/stop boiler.
Description
Technical field
The present invention relates to a kind of w-type combustion boiler with thermoelectricity motility regulatory function and control method thereof, relate to especially
And w-type combustion field of boilers.
Background technology
In recent years, China's wind-powered electricity generation and photovoltaic installation scale rapidly increase, in-service and the most occupied the world building installed capacity
First.On the one hand, the new forms of energy such as wind-powered electricity generation and photovoltaic are for we providing a large amount of clean electric power, on the other hand, its generated output
Randomness and unstability bring huge challenge also to the safe operation of power system and supply of electric power guarantee.
From the point of view of present case, China's power system regulating power is difficult to adapt to new forms of energy extensive development completely and disappear
The requirement received, some areas occur in that the most serious to be abandoned wind, abandons light and abandon water problems.2015, abandon wind-powered electricity generation amount the whole year up to
33900000000 kilowatt hours, " three Norths " some areas are abandoned wind and abandon light rate more than 20%.And cause and this seriously abandon wind, abandon light and abandon water and ask
The main cause of topic is still that existing coal group of motors motility is not enough, it is impossible to meet new forms of energy high speed development to power train tracking
The requirement of energy-conservation power.In order to ensure that new forms of energy can sufficiently be used, country in July, 2016 policy of having promulgated promote
Power plant carries out the improvement of thermoelectricity motility, and its main contents improving thermoelectricity motility have:
1) operational flexibility is improved: refer to improve coal group of motors (including pure condensate and thermoelectricity) peak modulation capacity, Ramp Rate and reduction
Start-stop time, for more undulatory property regenerative resource of dissolving, participate in electricity market flexibly and create conditions.
2) fuel flexibility is improved: refer to mix the biomass such as burning/multifuel combustion straw, wood flour, it is achieved the cleaning of biomass material
Utilize, reduce atmospheric pollution.
But, in actual motion, there is following deficiency in coal-fired station in terms of motility:
1) peak modulation capacity is typically maintained in design load 40%-50% rated load, it is impossible to carry out adjusting less than the degree of depth of 40% rated load
Peak, or during degree of depth peak regulation, fire box temperature declines, and coal powder ignition difficulty, flame holding is poor, easily stops working, and there is burner hearth
The major accident hidden danger that fire extinguishing is blown out；
2) during underload peak regulation, flue-gas temperature does not reaches the requirement of denitrating system so that denitration effect declines, and then adopts
Take away and open or install economizer by-pass method and make cigarette temperature reach requirement, thus sacrifice boiler efficiency；
3) during boiler peak regulation completes load up or boiler startup, in order to ensure flameholding in stove, it is impossible to quickly put into operation
Coal dust, reduces the Ramp Rate of unit, extends the startup time；
4) during underload peak regulation, combustion instability in stove, it is impossible to adapt to fuel change, easily cause positive/negative-pressure fluctuation in stove
Seriously.
Summary of the invention
For above defect, the present invention need to solve w-type combustion boiler relevant issues in terms of improving motility.
For reaching object above, the solution of the present invention is:
Having the w-type combustion boiler of thermoelectricity motility regulatory function, burner can be divided into face arch to burn by installation site and type
Device and rear arch burner, it is characterised in that: face arch burner includes face arch ordinary burner, face arch peak regulation burner, and rear arch fires
Burner includes rear arch ordinary burner, rear arch peak regulation burner, general at interval of one or two face arch in described face arch burner
Logical burner arranges one or two face arch peak regulation burner；At interval of one or two rear arch ordinary combustion in rear arch burner
Device arranges one or two rear arch peak regulation burner；And rear arch peak regulation burner is corresponding with face arch ordinary burner, rear arch is general
Logical burner is corresponding with face arch peak regulation burner；Described face arch peak regulation burner and rear arch peak regulation burner are internal combustion type burning
Device, this internal combustion burner is at burner internal energy firing coal-dust, and stable burning；Face arch ordinary burner and rear arch commonly fire
Burner is internal combustion burner or external-burning burner.
Use said structure, the face arch and rear arch of w-type combustion boiler are provided with face arch peak regulation burner and rear arch peak regulation
Burner, the internal combustion type that this peak regulation burner is, use internal combustion burner to can ensure that First air coal dust carries in burner
Before catch fire stable burning, and keep active combustion state to enter burner hearth heat release immediately, it is ensured that whole boiler coal-ash will not be because of
The too low unstable combustion of furnace load and stop working, it is achieved boiler not blowing out ultra-low load (20% rated load) peak regulation, strengthen thermoelectricity
Unit degree of depth peak modulation capacity, and ensure that coal dust firing is complete, do not sacrifice boiler efficiency.Owing to face arch and rear arch are spaced and symmetrical
Peak regulation burner and ordinary burner are set, during peak regulation, ensure that in-furnace temperature is evenly distributed, make cigarette temperature reach denitration
The requirement that system is effectively run.
Further, internal combustion burner is provided with can carry the oxygen channel of pure oxygen.
Use said structure, while utilizing the burning of oxygen boosting coal dust fugitive constituent, and strengthen the combustion of carbon sequestration in coal dust
Burn and reduce the ignition temperature of carbon sequestration in coal dust, improve combustion process response speed, improve combustion process temperature, thus realize
Fuel volatile content is not done requirement, is effectively improved boiler coal adaptability；Guarantee to ignite First air coal under any operating mode
Powder, makes coal dust enter burner hearth with active combustion state, maintains burner hearth stably to burn, thus realization can bituminous coal, meager coal, nothing
Bituminous coal and mix the purpose of the fired biomass energy (straw, wood flour etc.), reaches to improve the purpose of unit fuel flexibility.
There is the control method of the w-type combustion boiler of thermoelectricity motility regulatory function, it is characterised in that: use and there is thermoelectricity
The w-type combustion boiler of motility regulatory function；And use the combustion system of dislocation to carry out boiler for deeply peak regulation, increase boiler load
And start and stop boiler, described dislocation combustion system is only put into operation boiler front arch peak regulation burner and rear arch peak regulation burner；Do not throw
Fortune face arch ordinary burner and rear arch ordinary burner.
Using said method, when needs degree of depth peak regulation, only need to put into operation boiler front arch peak regulation burner and the combustion of rear arch peak regulation
Burner；The face arch ordinary burner that do not puts into operation and rear arch ordinary burner, it is ensured that boiler can reach the underload of degree of depth peak regulation to be needed
Ask.Ensure that hearth combustion is stable, be heated evenly, in guarantee stove on the premise of combustion completion, it is achieved increase in the unit interval
Furnace coal weight, it is ensured that unit fast lifting load, fired power generating unit creep speed is substantially improved；When increasing boiler load, logical
Cross the primary wind and powder increased in face arch peak regulation burner and rear arch peak regulation burner, be equivalent in stove, be mounted with multiple igniting
Layer, can quickly put into operation other ordinary burner, reaches the effect quickly climbed.When start and stop boiler, it is possible to according to operating mode need
Ask and furnace coal weight is adjusted flexibly, can realize quick add drop coal feeding amount, thus reduce boiler and open/purpose between the stopping time, reach
The effect of rapid starting/stopping.
Further, the step of boiler for deeply peak regulation is carried out especially by dislocation burning as follows:
(1), when boiler load is less than the rated load of 50%, whole face arch peak regulation burners of the boiler that puts into operation and rear arch peak regulation
Burner；
(2), according to the target load of degree of depth peak regulation, it is gradually lowered face arch ordinary burner and the First air of rear arch ordinary burner
Coal dust amount, and until it is reduced to zero or close to zero；The First air coal dust amount burnt needed for target load is all given boiler
Face arch peak regulation burner and rear arch peak regulation burner；Or the overwhelming majority of the First air coal dust amount burnt needed for target load is divided
To face arch peak regulation burner and the rear arch peak regulation burner of boiler, remaining fraction give other face arch ordinary burner and after
Arch ordinary burner；
(3) the First air coal dust amount calculating air distribution amount, according to step 2 put into operation, air distribution mode is in secondary wind or burnout degree
One or more.
Use said method, when boiler for deeply peak regulation, utilize internal combustion burner to make coal dust with active combustion shape in advance
State enters burner hearth, and is not fluctuated by ature of coal and affected, and improves fire box temperature, it is ensured that whole boiler coal-ash will not be born because of burner hearth heat
The too low unstable combustion of lotus and stop working, it is achieved boiler not blowing out ultra-low load (20% rated load) peak regulation, strengthen the fired power generating unit degree of depth
Peak modulation capacity.
Further, the concrete grammar of the First air coal dust amount being gradually lowered ordinary burner in step 2 is: with centrosymmetry
Mode is gradually lowered the primary wind and powder in face arch ordinary burner and rear arch ordinary burner.
Use said method, can be that fire box temperature reduces more to equalize, it is ensured that by thermal balance, do not lack of proper care, thus protect
Card boiler combustion safety, improves the service life of burner hearth.
Further, First air coal dust amount=(target load/rated load) * volume of the required burning of target load described in step 2
Constant load coal feeding amount.
Further, air distribution amount described in step 3=(target load/rated load) * rated load coal feeding amount * unit of coal combustion
Burn required air quantity * boiler design air surplus coefficient.
Further, by dislocation combustion system carry out increase boiler load step as follows:
(1), when boiler is risen to high load capacity by underload, the target load according to rising puts into operation First air coal dust and air distribution
Amount, keeps or centrosymmetry increases face arch peak regulation burner and the First air coal dust amount of rear arch peak regulation burner；
(2), centrosymmetry puts into operation the First air coal dust of face arch ordinary burner and rear arch ordinary burner.
Using said method, can put into operation multiple ordinary burner simultaneously, accelerates Ramp Rate.
Further, the burner of the cold start boiler step that puts into operation is carried out by dislocation combustion system as follows:
(1), centrosymmetry puts into operation First air coal dust to the face arch peak regulation burner of boiler and rear arch peak regulation burner；
(2), centrosymmetry puts into operation First air coal dust to the face arch ordinary burner of boiler and rear arch ordinary burner.
Using said method, can put into operation multiple peak regulation burner simultaneously, it is possible to put into operation multiple ordinary burner simultaneously, so
The speed of cold start boiler can be accelerated.
Further, carry out closing down the burner of the boiler step that puts into operation by dislocation combustion system as follows:
(1), centrosymmetry puts into operation First air coal dust to the face arch peak regulation burner of boiler and rear arch peak regulation burner；
(2), centrosymmetry closes down the face arch ordinary burner with boiler and rear arch ordinary burner；
(3), centrosymmetry closes down face arch peak regulation burner and the rear arch peak regulation burner of boiler.
Use said method, can be stable quickly close down boiler-burner.
Present invention is characterized in that and make the First air coal dust in face arch peak regulation burner and rear arch peak regulation burner arbitrarily
Burner hearth is entered in active ignition state, it is ensured that the coal dust continuous-stable burning that dislocation puts into, it is ensured that improve burner hearth under operating mode
Temperature, thus ensure that whole boiler coal-ash will not stop working because of the too low unstable combustion of furnace load, it is achieved boiler not blowing out
Ultra-low load peak regulation, is substantially improved apparatus of thermo-electric power boiler peak regulation motility.Boiler for deeply peak modulation capacity is improved prominent by this method, can be real
Existing boiler ＜ 20% rated load peak regulation, surmounts far away the current world >=40% rated load peak regulation target, and manipulation is simple, run peace
Entirely, stablizing, load responding speed is rapid, and the requirement of environment protection standard when meeting each load operation.Its concrete advantage is as follows:
(1) safety of unit operation during guarantee boiler ultra-low load peak regulation, can light the institutes such as bituminous coal, meager coal, anthracite
Some coals, do not have deflagration phenomenon in stove, will not stop working because of the too low unstable combustion of furnace load；
(2) improve peak modulation capacity, it is achieved peak regulation under not blowing out 20% rated load, thus reduce blowing out economic loss and boiler opens
Shutdown expenses, reduces turbine rotor, boiler-steam dome, the loss of valve equivalent life, thus reduces maintenance workload and maintenance cost；
(3) load climbing and open/between stopping time, can realize boiler fast speed belt at full capacity, enjoy excellent can be adjusted flexibly as required
First surf the Net power, meet country and improve the policy requirements of thermoelectricity motility；
(4) guarantee that peak regulation process denitrification apparatus inlet flue gas temperature reaches the requirement that puts into operation, it is ensured that in peak regulation burner First air coal dust with
State of catching fire enters burner hearth, and while maintaining burner hearth stably to burn, putting into operation of dislocation can ensure that peak regulation process denitrification apparatus entrance
Cigarette temperature meets and puts into operation requirement, full safety, efficiently puts into operation.
(5) whole system technical maturity, redundancy is arranged, this technology system stability in actual moving process, and fault-free is produced
Raw, zero dimension is protected.
Accompanying drawing illustrates:
Fig. 1 is boiler structure schematic diagram of the present invention；
Fig. 2 is the burner arrangement schematic diagram of embodiment one；
Fig. 3 is the burner arrangement schematic diagram of embodiment two；
Specific embodiments:
The present invention is further illustrated below in conjunction with the accompanying drawings.
Embodiment one, combine Fig. 1 and Fig. 2 it can be seen that a kind of w-type combustion pot with thermoelectricity motility regulatory function
Stove, w-type combustion boiler is divided into face arch 1 and rear arch 2, and burner can be divided into face arch burner 3 and rear arch burner by installation site
4, it is characterised in that: face arch burner 3 can be divided into face arch ordinary burner and face arch peak regulation burner according to classification, and rear arch fires
Burner 4 can divide rear arch ordinary burner, rear arch peak regulation burner, described face arch peak regulation burner and rear arch peak regulation according to classification
Burner is internal combustion burner, and this internal combustion burner is at burner internal energy firing coal-dust, and stable burning；Face arch is common
Burner and rear arch ordinary burner are internal combustion burner or external-burning burner.The w-type combustion boiler of indication of the present invention, can
To be the boiler with above structure directly produced by manufacturer, it is also possible to by ordinary burner form common
Boiler, is formed by burner reconstruction, i.e. by the structure of the present invention, part ordinary burner is transformed into peak regulation burner.This
Bright peak regulation burner is internal combustion burner, and ordinary burner is internal combustion burner or external-burning burner.That is
The boiler of the present invention all can be both configured to internal combustion burner by burner, and ordinary burner now can be allowed only to throw in once
Wind coal dust, and do not light a fire in burner.Internal combustion burner is referred mainly to coal dust and is led by fractional combustion at burner internal
The dynamic burner lighted.
Internal combustion burner is provided with the oxygen channel that can carry pure oxygen.Oxygen boosting coal dust fugitive constituent is utilized to burn
Meanwhile, and strengthen the ignition temperature of carbon sequestration in the burning reduction coal dust of carbon sequestration in coal dust, improve combustion process response speed,
Improve combustion process temperature, thus realize fuel volatile content is not done requirement, be effectively improved boiler coal adaptability；Guarantee
Ignite under any operating mode First air coal dust, makes coal dust enter burner hearth with active combustion state, maintains burner hearth stably to burn, thus
Realization can bituminous coal, meager coal, anthracite and mix the purpose of the fired biomass energy (straw, wood flour etc.), reach raising machine
The purpose of group fuel flexibility.
Face arch burner 3 arranges the burning of one or two face arch peak regulation at interval of one or two face arch ordinary burner
Device；Rear arch burner 4 arranges one or two rear arch peak regulation burner at interval of one or two rear arch ordinary burner；And
Rear arch peak regulation burner is corresponding with face arch ordinary burner, and rear arch ordinary burner is corresponding with face arch peak regulation burner；From
Fig. 2 it can be seen that face arch set gradually from left to right the first face arch peak regulation burner A1, the first face arch ordinary burner B1,
Second face arch peak regulation burner A2, the second face arch ordinary burner B2, the 3rd face arch peak regulation burner A3, the 3rd face arch commonly fire
Burner B3, the 4th face arch peak regulation burner A4, the 4th face arch ordinary burner B4, the 5th face arch peak regulation burner A5, before the 5th
Arch ordinary burner B5, the 6th face arch peak regulation burner A6 and the 6th face arch ordinary burner B6.Rear arch sets the most successively
The 6th rear arch peak regulation burner C6, the 6th rear arch ordinary burner D6, the 5th rear arch peak regulation burner C5, the 5th rear arch are put general
Logical burner D5, the 4th rear arch peak regulation burner C4, the 4th rear arch ordinary burner D4, the 3rd rear arch peak regulation burner C3, the
Three rear arch ordinary burner D3, the second rear arch peak regulation burner C2, the second rear arch ordinary burner D2, the first rear arch peak regulation burning
Device C1 and the first rear arch ordinary burner D1.First face arch peak regulation burner A1 and the first rear arch ordinary burner D1 are corresponding,
When being in degree of depth peak regulation state, the first face arch peak regulation burner A1 puts into operation First air coal dust, the first rear arch ordinary burner D1
Do not put into operation First air coal dust.The carrying out that whole boiler is all corresponding is burnt, and makes boiler internal temperature more equalize.It is more second
Face arch ordinary burner B2 and the second rear arch peak regulation burner C2 are corresponding；6th face arch peak regulation burner A6 and the 6th rear arch are general
Logical burner D6 is corresponding, and other burner correspondences in like manner, do not repeat.
The step carrying out boiler for deeply peak regulation when using dislocation to burn is as follows:
(1), boiler load less than 50% rated load time, whole face arch peak regulation burner A1 of the boiler that puts into operation, A2, A3,
A4, A5, A6 and rear arch peak regulation burner C1, C2, C3, C4, C5, C6；
(2), according to the target load of degree of depth peak regulation, it is gradually lowered face arch ordinary burner B1, B2, B3, B4, B5, B6 and rear arch
Ordinary burner D1, the First air coal dust amount of D2, D3, D4, D5, D6, and until it is reduced to zero or close to zero；By target load institute
The First air coal dust amount that need to burn all gives face arch peak regulation burner A1, A2, A3, A4, A5, A6 and the combustion of rear arch peak regulation of boiler
Burner C1, C2, C3, C4, C5, C6；Or the overwhelming majority of the First air coal dust amount burnt needed for target load is given boiler
Face arch peak regulation burner A1, A2, A3, A4, A5, A6 and rear arch peak regulation burner C1, C2, C3, C4, C5, C6, remaining fraction
Give face arch ordinary burner B1, B2, B3, B4, B5, B6 and rear arch ordinary burner D1, D2, D3, D4, D5, D6；
(3) the First air coal dust amount calculating air distribution amount, according to step 2 put into operation, air distribution mode is in secondary wind or burnout degree
One or more.
First air coal dust amount=(target load/rated load) * of the required burning of the target load mentioned in above-mentioned steps 2
Rated load coal feeding amount, it is also possible to determine the most voluntarily and adjust.Air distribution amount described in step 3=(target load/volume
Constant load) * rated load coal feeding amount * unit of coal burning required air quantity * boiler design air surplus coefficient, it is possible to according to reality
Border needs to determine voluntarily and adjust.When boiler for deeply peak regulation, internal combustion burner is utilized to make coal dust with active combustion shape in advance
State enters burner hearth, and is not fluctuated by ature of coal and affected, and improves fire box temperature, it is ensured that whole boiler coal-ash will not be born because of burner hearth heat
The too low unstable combustion of lotus and stop working, it is achieved boiler not blowing out ultra-low load (20% rated load) peak regulation, strengthen the fired power generating unit degree of depth
Peak modulation capacity.
The step carrying out increasing boiler load by dislocation combustion system is as follows:
(1), when boiler is risen to high load capacity by underload, the target load according to rising puts into operation First air coal
Powder and air distribution amount, holding or centrosymmetric increase face arch peak regulation burner A1, A2, A3, A4, A5, A6 and rear arch peak regulation
The First air coal dust amount of burner C1, C2, C3, C4, C5, C6；
(2), put into operation face arch ordinary burner B1, B2, B3, B4, B5, B6 and rear arch of centrosymmetry is common
The First air coal dust of burner D1, D2, D3, D4, D5, D6.So-called centrosymmetry refers to
It is symmetrical with the diagonal angle, center between face arch and rear arch, as the first face arch peak regulation burner A1 and the 6th rear arch peak regulation fire
Burner C6 centrosymmetry, the first rear arch peak regulation burner C1 and the 6th face arch peak regulation burner A6 centrosymmetry, the second face arch is general
Logical burner B2 and the 5th rear arch ordinary burner D5 centrosymmetry, the 3rd face arch ordinary burner B3 and the 4th rear arch commonly fire
Burner D4 centrosymmetry.
Realize that hearth combustion is stable, be heated evenly, it is to avoid tradition puts into operation that the load up caused is slow one by one, main steam temperature and
Pressure can not be grown simultaneously or increase the problems such as slower, in guarantee stove on the premise of combustion completion, when can realize increasing unit
Interior furnace coal weight, it is ensured that unit fast lifting load, is substantially improved fired power generating unit creep speed.
The burner of the cold start boiler step that puts into operation is carried out as follows by dislocation combustion system:
(1), the centrosymmetry First air coal dust that puts into operation is adjusted to face arch peak regulation burner A1, A2, A3, A4, A5, A6 of boiler and rear arch
Peak burner C1, C2, C3, C4, C5, C6；
(2), the centrosymmetry First air coal dust that puts into operation is general to face arch ordinary burner B1, B2, B3, B4, B5, B6 and the rear arch of boiler
Logical burner D1, D2, D3, D4, D5, D6.
The dislocation utilizing the present invention arranges that carrying out burner puts into operation, and is equivalent to be mounted with multiple ignition layer in stove, can root
Furnace coal weight being adjusted flexibly according to duty requirements, can realize quickly increasing coal feeding amount, it is ensured that being heated in stove is more uniformly distributed, burning is steady
Fixed, furnace flame degree of filling is high, thus reduces the purpose of boiler cold-state starting trouble time.
Carry out closing down the burner of the boiler step that puts into operation by dislocation combustion system as follows:
(1), the centrosymmetry First air coal dust that puts into operation is adjusted to face arch peak regulation burner A1, A2, A3, A4, A5, A6 of boiler and rear arch
Peak burner C1, C2, C3, C4, C5, C6；
(2), centrosymmetry closes down face arch ordinary burner B1 with boiler, B2, B3, B4, B5, B6 and rear arch ordinary burner
D1、D2、D3、D4、D5、D6；
(3), centrosymmetry close down face arch peak regulation burner A1, A2, A3, A4, A5, A6 of boiler and rear arch peak regulation burner C1,
C2、C3、C4、C5、C6。
First air coal dust in peak regulation burner in advance active combustion, utilize dislocation layout to carry out burner and put into operation, phase
When in being mounted with multiple ignition layer in stove, furnace coal weight can be adjusted flexibly according to duty requirements, can realize quickly reducing throwing coal
Amount, it is ensured that be heated in stove and be more uniformly distributed, flameholding, it is ensured that boiler safety, and oxygen-rich coal dust flame ductility is good, burner hearth fire
Flame degree of filling is high, thus reduces boiler and close down the purpose of time.
Embodiment two, in conjunction with Fig. 1 with Fig. 3 it can be seen that embodiment one is identical with the boiler structure of embodiment two, difference
Place is the distributing position of peak regulation burner and ordinary burner, common at interval of one or two face arch in face arch burner 3
Burner arranges one or two face arch peak regulation burner；At interval of one or two rear arch ordinary combustion in rear arch burner 4
Device arranges one or two rear arch peak regulation burner；And rear arch peak regulation burner is corresponding with face arch ordinary burner, rear arch is general
Logical burner is corresponding with face arch peak regulation burner；It is to say, can peak regulation burner and ordinary burner can one or two
The Arbitrary distribution of individual varying number, as long as disclosure satisfy that and rear arch peak regulation burner is corresponding with face arch ordinary burner, after
Arch ordinary burner such setting corresponding with face arch peak regulation burner, then just can reach the effect of the present invention.This
Face arch in embodiment set gradually from left to right the first face arch peak regulation burner A1, the first face arch ordinary burner B1,
Two face arch peak regulation burner A2, the second face arch ordinary burner B2, the 3rd face arch peak regulation burner A3, the 3rd face arch ordinary combustion
Device B3, the 4th face arch ordinary burner B4, the 4th face arch peak regulation burner A4, the 5th face arch ordinary burner B5, the 5th face arch
Peak regulation burner A5, the 6th face arch ordinary burner B6 and the 6th face arch peak regulation burner A6.Rear arch sets gradually from left to right
6th rear arch ordinary burner D6, the 6th rear arch peak regulation burner C6, the 5th rear arch ordinary burner D5, the 5th rear arch peak regulation
Burner C5, the 4th rear arch ordinary burner D4, the 4th rear arch peak regulation burner C4, the 3rd rear arch peak regulation burner C3, the 3rd
Rear arch ordinary burner D3, the second rear arch peak regulation burner C2, the second rear arch ordinary burner D2, the first rear arch peak regulation burner
C1 and the first rear arch ordinary burner D1.
The boiler controlling method of embodiment two is identical with embodiment one, is not repeated herein.
Above enforcement, is only the general description to this patent, is not defined the scope of this patent, is not taking off
On the premise of this patent design spirit, anyone the various deformation that the technical scheme of this patent is made and improvement, all should fall
Enter in the protection domain that claims of this patent determine.
Claims (10)
1. having the w-type combustion boiler of thermoelectricity motility regulatory function, burner can be divided into face arch to fire by installation site and type
Burner and rear arch burner, it is characterised in that: face arch burner includes face arch ordinary burner, face arch peak regulation burner, rear arch
Burner includes rear arch ordinary burner, rear arch peak regulation burner, at interval of one or two face arch in described face arch burner
Ordinary burner arranges one or two face arch peak regulation burner；Rear arch burner commonly fires at interval of one or two rear arch
Burner arranges one or two rear arch peak regulation burner；And rear arch peak regulation burner is corresponding with face arch ordinary burner, rear arch
Ordinary burner is corresponding with face arch peak regulation burner；Described face arch peak regulation burner and rear arch peak regulation burner are internal combustion type combustion
Burner, this internal combustion burner is at burner internal energy firing coal-dust, and stable burning；Face arch ordinary burner and rear arch are common
Burner is internal combustion burner or external-burning burner.
There is the w-type combustion boiler of thermoelectricity motility regulatory function the most as claimed in claim 1, it is characterised in that fire at internal combustion type
Burner is provided with the oxygen channel that can carry pure oxygen.
3. there is the control method of the w-type combustion boiler of thermoelectricity motility regulatory function, it is characterised in that: use such as claim
The w-type combustion boiler with thermoelectricity motility regulatory function described in 1；And use the combustion system of dislocation to carry out boiler for deeply tune
Peak, increase boiler load and start and stop boiler, described dislocation combustion system is only put into operation boiler front arch peak regulation burner and rear arch
Peak regulation burner；The face arch ordinary burner that do not puts into operation and rear arch ordinary burner.
Having the control method of the w-type combustion boiler of thermoelectricity motility regulatory function the most as claimed in claim 3, its feature exists
In, the step carrying out boiler for deeply peak regulation especially by dislocation burning is as follows:
(1), when boiler load is less than the rated load of 50%, whole face arch peak regulation burners of the boiler that puts into operation and rear arch peak regulation
Burner；
(2), according to the target load of degree of depth peak regulation, it is gradually lowered face arch ordinary burner and the First air of rear arch ordinary burner
Coal dust amount, and until it is reduced to zero or close to zero；The First air coal dust amount burnt needed for target load is all given boiler
Face arch peak regulation burner and rear arch peak regulation burner；Or the overwhelming majority of the First air coal dust amount burnt needed for target load is divided
To face arch peak regulation burner and the rear arch peak regulation burner of boiler, remaining fraction give other face arch ordinary burner and after
Arch ordinary burner；
(3) the First air coal dust amount calculating air distribution amount, according to step 2 put into operation, air distribution mode is in secondary wind or burnout degree
One or more.
Having the control method of the w-type combustion boiler of thermoelectricity motility regulatory function the most as claimed in claim 4, its feature exists
In, the concrete grammar of the First air coal dust amount being gradually lowered face arch ordinary burner and rear arch ordinary burner in step 2 is: with
Centrosymmetry mode is gradually lowered the primary wind and powder in face arch ordinary burner and rear arch ordinary burner.
Having the control method of the w-type combustion boiler of thermoelectricity motility regulatory function the most as claimed in claim 4, its feature exists
In, First air coal dust amount=(target load/rated load) * rated load of the required burning of target load described in step 2 throws coal
Amount.
Having the control method of the w-type combustion boiler of thermoelectricity motility regulatory function the most as claimed in claim 4, its feature exists
In, air distribution amount described in step 3=(target load/rated load) * rated load coal feeding amount * unit of coal burning required air quantity *
Boiler design air surplus coefficient.
Having the control method of the w-type combustion boiler of thermoelectricity motility regulatory function the most as claimed in claim 3, its feature exists
In: the step carrying out increasing boiler load by dislocation combustion system is as follows:
(1), when boiler is risen to high load capacity by underload, the target load according to rising puts into operation First air coal dust and air distribution
Amount, keeps or centrosymmetry increases face arch peak regulation burner and the First air coal dust amount of rear arch peak regulation burner；
(2), centrosymmetry puts into operation the First air coal dust of face arch ordinary burner and rear arch ordinary burner.
Having the control method of the w-type combustion boiler of thermoelectricity motility regulatory function the most as claimed in claim 3, its feature exists
In: carry out the burner of the cold start boiler step that puts into operation by dislocation combustion system as follows:
(1), centrosymmetry puts into operation First air coal dust to the face arch peak regulation burner of boiler and rear arch peak regulation burner；
(2), centrosymmetry puts into operation First air coal dust to the face arch ordinary burner of boiler and rear arch ordinary burner.
Having the control method of the w-type combustion boiler of thermoelectricity motility regulatory function the most as claimed in claim 3, its feature exists
In: carry out closing down the burner of the boiler step that puts into operation by dislocation combustion system as follows:
(1), centrosymmetry puts into operation First air coal dust to the face arch peak regulation burner of boiler and rear arch peak regulation burner；
(2), centrosymmetry closes down the face arch ordinary burner with boiler and rear arch ordinary burner；
(3), centrosymmetry closes down face arch peak regulation burner and the rear arch peak regulation burner of boiler.
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