CN106287675A - There is Process In A Tangential Firing and the control method thereof of thermoelectricity motility regulatory function - Google Patents
There is Process In A Tangential Firing and the control method thereof of thermoelectricity motility regulatory function Download PDFInfo
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- CN106287675A CN106287675A CN201610648435.6A CN201610648435A CN106287675A CN 106287675 A CN106287675 A CN 106287675A CN 201610648435 A CN201610648435 A CN 201610648435A CN 106287675 A CN106287675 A CN 106287675A
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- burner
- boiler
- peak regulation
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- coal dust
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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
- F23C5/32—Disposition of burners to obtain rotating flames, i.e. flames moving helically or spirally
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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
- F23C7/00—Combustion apparatus characterised by arrangements for air supply
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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
Abstract
The present invention relates to Process In A Tangential Firing and the control method thereof with thermoelectricity motility regulatory function, particularly to Process In A Tangential Firing field.Burner is divided into top burner, middle part burner and lower burner by the horizontal absolute altitude height of installation site, it is characterized in that: described top burner is that down count the burner of ground floor and the second layer, the most any one layer or two-layer from boiler top be peak regulation burner；Described lower burner is up to count the burner of ground floor and the second layer from boiler bottom, the most any one layer or two-layer are peak regulation burner, described peak regulation burner is internal combustion burner, this burner internal energy firing coal-dust, and stablize burning, other burner is ordinary burner, and ordinary burner is internal combustion burner or external-burning 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 Process In A Tangential Firing and the control method thereof with thermoelectricity motility regulatory function, particularly to four
Tangential boiler field, angle.
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 Process In A Tangential Firing relevant issues in terms of improving motility.
For reaching object above, the solution of the present invention is:
Having the Process In A Tangential Firing of thermoelectricity motility regulatory function, burner is divided into by the horizontal absolute altitude height of installation site
Portion's burner, middle part burner and lower burner, it is characterised in that: described top burner is from boiler top several
One layer and the burner of the second layer, the most any one layer or two-layer are peak regulation burner；Described lower burner is from boiler bottom
It is peak regulation burner that portion up counts the burner of ground floor and the second layer, the most any one layer or two-layer, described peak regulation burner
For internal combustion burner, this burner internal energy firing coal-dust, and stable burning, other burner is ordinary burner, general
Logical burner is internal combustion burner or external-burning burner.
Using said structure, at the upper and lower peak regulation burner of Process In A Tangential Firing, it is interior that this peak regulation burner is
Combustion, First air coal dust catches fire stable burning in burner in advance to use internal combustion burner can ensure that, and keeps actively
Fired state enters burner hearth heat release immediately, it is ensured that whole boiler coal-ash will not put out because of the too low unstable combustion of furnace load
Fire, it is achieved boiler not blowing out ultra-low load (20% rated load) peak regulation, strengthens fired power generating unit degree of depth peak modulation capacity, and ensure that
Coal dust firing is complete, does not sacrifice boiler efficiency.Due to putting into operation of top peak regulation burner, raise pulverized coal flame center, made cigarette
Temperature reaches the requirement that denitrating system effectively runs.
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 Process In A Tangential Firing of thermoelectricity motility regulatory function, it is characterised in that: use and there is fire
Electricity motility regulatory function Process In A Tangential Firing, and use tomography combustion system carry out boiler for deeply peak regulation, increase boiler bear
Lotus and start and stop boiler, described tomography combustion system refers to only to put into operation one or more layers burner of upper boiler and one layer, bottom
Or multilayer combustion device, the burner in the middle part of the boiler that do not puts into operation, the burner that described tomography combustion system puts into operation is peak regulation burner,
Other burners are ordinary burner.
Use said method, when needs degree of depth peak regulation, one or more layers peak regulation burner of the upper boiler that only puts into operation and
One or more layers peak regulation burner of bottom；Do not put into operation the burner in the middle part of boiler, it is ensured that boiler can reach the low of degree of depth peak regulation
Workload demand.Ensure that hearth combustion is stable, be heated evenly, in guarantee stove on the premise of combustion completion, it is achieved increase unit
Furnace coal weight in time, it is ensured that unit fast lifting load, is substantially improved fired power generating unit creep speed；Increasing boiler load
Time, only put into operation in one or more layers peak regulation burner of upper boiler and one or more layers peak regulation burner of bottom by increasing
Primary wind and powder, it is also possible to quickly put into operation other ordinary burner, reaches the effect quickly climbed.When start and stop boiler, it is possible to root
Furnace coal weight is adjusted flexibly according to duty requirements, can realize quick add drop coal feeding amount, thus reduce boiler open/between the stopping time
Purpose.
Further, the step of boiler for deeply peak regulation is carried out especially by tomography burning as follows:
(1), when boiler load is less than the rated load of 50%, the peak regulation burner of the upper boiler that puts into operation and bottom；
(2), according to the target load of degree of depth peak regulation, it is gradually lowered the First air coal dust amount of ordinary burner, and until is reduced to
Zero or close to zero；The First air coal dust amount burnt needed for target load is all given the peak regulation burning of upper boiler and bottom
Device；Or the overwhelming majority of the First air coal dust amount burnt needed for target load is given the peak regulation burning of upper boiler and bottom
Device, remaining fraction gives middle part burner；
(3) the First air coal dust amount calculating air distribution amount, according to step 2 put into operation, air distribution mode is secondary wind, tertiary air or after-flame
One or more in wind.
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: from top to bottom depend on
Secondary successively reduction First air coal dust amount, and each layer should reduce with diagonal angle simultaneously.
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, it is characterised in that: the step carrying out increasing boiler load by tomography combustion system is as follows:
(1), when boiler is risen to high load capacity by underload, keep or increase upper boiler and bottom peak regulation burner one
Secondary wind coal dust amount；
(2), according to the target load risen put into operation First air coal dust, and first put into operation the peak regulation burner phase with upper boiler and bottom
Adjacent ordinary burner, then the ordinary burner adjacent with the ordinary burner put into operation that put into operation, until all burners are whole
Put into operation；
(3) the First air coal dust amount calculating air distribution amount, according to step 2 put into operation, air distribution mode is secondary wind, tertiary air or after-flame
One or more in wind.
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 tomography combustion system as follows:
(1) First air coal dust, is put into operation to the peak regulation burner of upper boiler and bottom；
(2) the First air coal dust that, puts into operation gives the ordinary burner adjacent with the peak regulation burner of upper boiler and bottom；
(3) the First air coal dust that, puts into operation gives the ordinary burner adjacent with the ordinary burner put into operation；
(4), repeatedly step 3 until all burners all put into operation.
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 tomography combustion system as follows:
(1) First air coal dust, is put into operation to the peak regulation burner of upper boiler and bottom；
(2), the ordinary burner adjacent with the peak regulation burner of upper boiler and bottom is closed down；
(3), the ordinary burner adjacent with the ordinary burner closed down is closed down；
(4), repeatedly step 3 until all ordinary burner are all closed down；
(5) the peak regulation burner of upper boiler and bottom, is closed down.
Use said method, can be stable quickly close down boiler-burner.
Present invention is characterized in that the peak regulation burner that boiler internal tomography is arranged can make First air coal dust in any work
Burner hearth is entered in active ignition state, it is ensured that the coal dust continuous-stable burning that tomography puts into, it is ensured that improve burner hearth temperature under condition
Degree, 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 surpasses
Underload 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 realize
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 tomography 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 the burner arrangement schematic diagram of embodiment one；
Fig. 2 is the burner arrangement schematic diagram of embodiment two；
Fig. 3 is the burner arrangement schematic diagram of embodiment three；
Specific embodiments:
The present invention is further illustrated below in conjunction with the accompanying drawings.
Embodiment one, combine Fig. 1 it can be seen that the Process In A Tangential Firing of the present embodiment includes altogether 6 grate firing burners, wherein
A1, A2 layer is lower burner, and B1, B2 layer is middle part burner, and C1, C2 layer is top burner, in top burner arbitrarily
One layer or two-layer are peak regulation burner；In lower burner, any one layer or two-layer are peak regulation burner, described peak regulation burner
For internal combustion burner, this burner internal energy firing coal-dust, and stable burning, other burner is ordinary burner, general
Logical burner is internal combustion burner or external-burning burner.The Process In A Tangential Firing of indication of the present invention, can be directly by giving birth to
Produce the manufacturer production boiler with above structure out, it is also possible to the plain cylindrical furnace being made up of ordinary burner, by combustion
Burner transformation forms, and i.e. by the structure of the present invention, part ordinary burner is transformed into peak regulation burner.The peak regulation combustion of the present invention
Burner is internal combustion burner, and ordinary burner is internal combustion burner or external-burning burner, say, that the pot of the present invention
Stove all can be both configured to internal combustion burner by burner, and ordinary burner now can be allowed only to throw in First air coal dust, and
Do not light a fire in burner.Internal combustion burner refers mainly to the combustion that coal dust is actively lighted by fractional combustion at burner internal
Burner.It is designed with burner on four corner angle in the middle of each layer of Process In A Tangential Firing.
The present embodiment can there is various ways carry out burner arrangement, at least include the most several:
The first, C2, A1 are peak regulation burner, and A2, B1, B2, C1 are ordinary burner；
The second, C2, A2 are peak regulation burner, and A1, B1, B2, C1 are ordinary burner；
The third, C1, A1 are peak regulation burner, and A2, B1, B2, C2 are ordinary burner；
4th kind, C1, A2 are peak regulation burner, and A1, B1, B2, C2 are ordinary burner；
5th kind, C2, C1, A1 are peak regulation burner, and A2, B1, B2 are ordinary burner；
6th kind, C2, C1, A2 are peak regulation burner, and A1, B1, B2 are ordinary burner；
7th kind, C2, A1, A2 are peak regulation burner, and B1, B2, C1 are ordinary burner；
8th kind, C1, A1, A2 are peak regulation burner, and B1, B2, C2 are ordinary burner；
Hereinafter illustrate by the 4th kind of mode,
Internal combustion burner is provided with the oxygen channel that can carry pure oxygen.Utilize that oxygen boosting coal dust fugitive constituent burns is same
Time, 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, carry
High combustion process temperature, thus realize fuel volatile content is not done requirement, it is effectively improved boiler coal adaptability；Guarantee
Arbitrarily ignite under operating mode First air coal dust, makes coal dust enter burner hearth with active combustion state, maintains burner hearth stably to burn, thus real
It is now able to bituminous coal, meager coal, anthracite and mixes the purpose of the fired biomass energy (straw, wood flour etc.), reaching to improve unit
The purpose of fuel flexibility.
Using tomography combustion system to carry out boiler for deeply peak regulation, increase boiler load and start and stop boiler, described tomography fires
Burning mode refers to only to put into operation one or more layers burner of upper boiler and one or more layers burner of bottom, does not put into operation in boiler
The burner in portion, only puts into operation upper boiler C1 layer peak regulation burner and bottom A2 layer peak regulation burner when middle finger in the present embodiment,
Do not put into operation the ordinary burner of A1, B1, B2, C2 layer.
The step carrying out boiler for deeply peak regulation especially by tomography burning is as follows:
(1), when boiler load is less than the rated load of 50%, peak regulation burner C1, A2 of the upper boiler that puts into operation and bottom；
(2), according to the target load of degree of depth peak regulation, it is gradually lowered the First air coal dust amount of ordinary burner A1, B1, B2, C2, and
Until being reduced to zero or close to zero；The First air coal dust amount burnt needed for target load is all given upper boiler and bottom
Peak regulation burner C1, A2；Or the overwhelming majority of the First air coal dust amount burnt needed for target load is given upper boiler and under
Peak regulation burner C1, the A2 in portion, remaining fraction gives middle part burner A1, B1, B2, C2；
(3) the First air coal dust amount calculating air distribution amount, according to step 2 put into operation, air distribution mode is secondary wind, tertiary air or after-flame
One or more in wind.
The concrete grammar of the First air coal dust amount being gradually lowered ordinary burner in step 2 is: the most successively
Reduce First air coal dust amount, and each layer should reduce with diagonal angle simultaneously.The order of C2, B2, B1, A1 successively drops the most from top to bottom
Low, when reducing each layer, all with burner on four corner angle on each layer of burner, every time by the two of diagonal angle combustions
Burner reduces together.
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 tomography combustion system is as follows:
(1), when boiler is risen to high load capacity by underload, keep or increase upper boiler and bottom peak regulation burner C1,
The First air coal dust amount of A2；
(2), according to the target load risen put into operation First air coal dust, and first put into operation the peak regulation burner phase with upper boiler and bottom
Adjacent ordinary burner C2, B1, then put into operation adjacent with the ordinary burner put into operation ordinary burner B2, A1, until owning
Burner all puts into operation；The most preferentially put into operation the burner put into operation above burner, can be that top combustion burner provides
Incendiary source.
(3) the First air coal dust amount, according to step 2 put into operation calculates air distribution amount, air distribution mode be secondary wind, tertiary air or
One or more in burnout degree.
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 tomography combustion system:
(1) First air coal dust, is put into operation to peak regulation burner C1, A2 of upper boiler and bottom；
(2) the First air coal dust that, puts into operation give ordinary burner C2 adjacent with peak regulation burner C1, A2 of upper boiler and bottom,
B1；
(3) the First air coal dust that, puts into operation is given and ordinary burner C2 put into operation, ordinary burner B2 adjacent for B1, A1；
(4), repeatedly step 3 until all burners all put into operation.
The tomography 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 tomography combustion system as follows:
(1) First air coal dust, is put into operation to peak regulation burner C1, A2 of upper boiler and bottom；
(2) ordinary burner C2 adjacent with peak regulation burner C1, A2 of upper boiler and bottom, B1, are closed down；
(3), close down and ordinary burner C2 closed down, ordinary burner B2 adjacent for B1, A1；
(4), repeatedly step 3 until all ordinary burner are all closed down；
(5) peak regulation burner C1, A2 of upper boiler and bottom, are closed down.
First air coal dust in peak regulation burner in advance active combustion, carrying out burner puts into operation to utilize tomography to arrange, 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, the boiler structure of embodiment two and embodiment one is essentially identical as shown in Figure 2, and difference is this
The Process In A Tangential Firing of embodiment includes altogether 5 grate firing burners, and wherein A1, A2 layer is lower burner, and B1 layer is middle part burning
Device, C1, C2 layer is top burner, and in top burner, any one layer or two-layer are peak regulation burner；Lower burner is appointed
Anticipate one layer or two-layer be peak regulation burner,
The present embodiment can there is various ways carry out burner arrangement, at least include the most several:
The first, C2, A1 are peak regulation burner, and A2, B1, C1 are ordinary burner；
The second, C2, A2 are peak regulation burner, and A1, B1, C1 are ordinary burner；
The third, C1, A1 are peak regulation burner, and A2, B1, C2 are ordinary burner；
4th kind, C1, A2 are peak regulation burner, and A1, B1, C2 are ordinary burner；
5th kind, C2, C1, A1 are peak regulation burner, and A2, B1 are ordinary burner；
6th kind, C2, C1, A2 are peak regulation burner, and A1, B1 are ordinary burner；
7th kind, C2, A1, A2 are peak regulation burner, and B1, C1 are ordinary burner；
8th kind, C1, A1, A2 are peak regulation burner, and B1, C2 are ordinary burner；
Boiler controlling method and the embodiment one of embodiment two are essentially identical, are not repeated herein.
Embodiment three, the boiler structure of embodiment three and embodiment one is essentially identical as shown in Figure 3, and difference is this
The Process In A Tangential Firing of embodiment includes altogether 4 grate firing burners, and wherein A1, A2 layer is lower burner, and B1 layer is middle part burning
Device, C1 layer is top burner, and top burner is peak regulation burner；In lower burner, any one layer or two-layer are peak regulation combustion
Burner,
The present embodiment can there is various ways carry out burner arrangement, at least include the most several:
The first, C1, A1 are peak regulation burner, and A2, B1 are ordinary burner；
The second, C1, A2 are peak regulation burner, and A1, B1 are ordinary burner；
The third, C1, A1, A2 are peak regulation burner, and B1 is ordinary burner；
Boiler controlling method and the embodiment one of embodiment three are essentially identical, are 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 Process In A Tangential Firing of thermoelectricity motility regulatory function, burner is divided into by the horizontal absolute altitude height of installation site
Top burner, middle part burner and lower burner, it is characterised in that: described top burner is down to count from boiler top
Ground floor and the burner of the second layer, the most any one layer or two-layer are peak regulation burner；Described lower burner is from boiler
Bottom up counts the burner of ground floor and the second layer, and the most any one layer or two-layer are peak regulation burner, and described peak regulation burns
Device is internal combustion burner, this burner internal energy firing coal-dust, and stable burning, and other burner is ordinary burner,
Ordinary burner is internal combustion burner or external-burning burner.
There is the Process In A Tangential Firing of thermoelectricity motility regulatory function the most as claimed in claim 1, it is characterised in that: internal combustion type fires
Burner is provided with the oxygen channel that can carry pure oxygen.
3. there is the control method of the Process In A Tangential Firing of thermoelectricity motility regulatory function, it is characterised in that: use right such as to want
Seek the Process In A Tangential Firing with thermoelectricity motility regulatory function described in 1, and use tomography combustion system to carry out boiler for deeply
Peak regulation, increasing boiler load and start and stop boiler, described tomography combustion system refers to only to put into operation one or more layers of upper boiler
Burner and one or more layers burner of bottom, the burner in the middle part of the boiler that do not puts into operation, the combustion that described tomography combustion system puts into operation
Burner is peak regulation burner, and other burners are ordinary burner.
Having the control method of the Process In A Tangential Firing 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 tomography burning is as follows:
(1), when boiler load is less than the rated load of 50%, the peak regulation burner of the upper boiler that puts into operation and bottom；
(2), according to the target load of degree of depth peak regulation, it is gradually lowered the First air coal dust amount of ordinary burner, and until is reduced to
Zero or close to zero；The First air coal dust amount burnt needed for target load is all given the peak regulation burning of upper boiler and bottom
Device；Or the overwhelming majority of the First air coal dust amount burnt needed for target load is given the peak regulation burning of upper boiler and bottom
Device, remaining fraction gives middle part burner；
(3) the First air coal dust amount calculating air distribution amount, according to step 2 put into operation, air distribution mode is secondary wind, tertiary air or after-flame
One or more in wind.
Having the control method of the Process In A Tangential Firing 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 ordinary burner in step 2 is: the most successively reduce by one
Secondary wind coal dust amount, and each layer should reduce with diagonal angle simultaneously.
Having the control method of the Process In A Tangential Firing 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 Process In A Tangential Firing 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 Process In A Tangential Firing of thermoelectricity motility regulatory function the most as claimed in claim 3, its feature exists
In: the step carrying out increasing boiler load by tomography combustion system is as follows:
(1), when boiler is risen to high load capacity by underload, keep or increase upper boiler and bottom peak regulation burner one
Secondary wind coal dust amount；
(2), according to the target load risen put into operation First air coal dust, and first put into operation the peak regulation burner phase with upper boiler and bottom
Adjacent ordinary burner, then the ordinary burner adjacent with the ordinary burner put into operation that put into operation, until all burners are whole
Put into operation；
(3) the First air coal dust amount calculating air distribution amount, according to step 2 put into operation, air distribution mode is secondary wind, tertiary air or after-flame
One or more in wind.
Having the control method of the Process In A Tangential Firing 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 tomography combustion system as follows:
(1) First air coal dust, is put into operation to the peak regulation burner of upper boiler and bottom；
(2) the First air coal dust that, puts into operation gives the ordinary burner adjacent with the peak regulation burner of upper boiler and bottom；
(3) the First air coal dust that, puts into operation gives the ordinary burner adjacent with the ordinary burner put into operation；
(4), repeatedly step 3 until all burners all put into operation.
Having the control method of the Process In A Tangential Firing 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 tomography combustion system as follows:
(1) First air coal dust, is put into operation to the peak regulation burner of upper boiler and bottom；
(2), the ordinary burner adjacent with the peak regulation burner of upper boiler and bottom is closed down；
(3), the ordinary burner adjacent with the ordinary burner closed down is closed down；
(4), repeatedly step 3 until all ordinary burner are all closed down；
(5) the peak regulation burner of upper boiler and bottom, is closed down.
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Application publication date: 20170104 |