CN101400947B - Circular burner and its operation method - Google Patents
Circular burner and its operation method Download PDFInfo
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- CN101400947B CN101400947B CN2007800084912A CN200780008491A CN101400947B CN 101400947 B CN101400947 B CN 101400947B CN 2007800084912 A CN2007800084912 A CN 2007800084912A CN 200780008491 A CN200780008491 A CN 200780008491A CN 101400947 B CN101400947 B CN 101400947B
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- nozzle
- gas nozzle
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- gas
- circular cylindrical
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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
- F23C7/002—Combustion apparatus characterised by arrangements for air supply the air being submitted to a rotary or spinning motion
- F23C7/004—Combustion apparatus characterised by arrangements for air supply the air being submitted to a rotary or spinning motion using vanes
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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
- F23C9/00—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber
- F23C9/003—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber for pulverulent fuel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D1/00—Burners for combustion of pulverulent fuel
-
- 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
- F23C2202/00—Fluegas recirculation
- F23C2202/30—Premixing fluegas with combustion air
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2201/00—Burners adapted for particulate solid or pulverulent fuels
- F23D2201/10—Nozzle tips
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2201/00—Burners adapted for particulate solid or pulverulent fuels
- F23D2201/20—Fuel flow guiding devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
- F23D2900/01001—Pulverised solid fuel burner with means for swirling the fuel-air mixture
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Pre-Mixing And Non-Premixing Gas Burner (AREA)
- Gas Burners (AREA)
Abstract
Round burner for burning fossil fuels, comprising the following: a first nozzle (2) for introducing a stream of air or recirculated flue gas or a mixed stream of O2 or air and recirculated flue gas, a fuel nozzle (3) for injecting fuel, arranged coaxially in relation to the first nozzle (2), enclosing the latter and forming an annular cross section (11), a gas nozzle I (4) for introducing a stream of air or recirculated flue gas or a mixed stream of O2 or air and recirculated flue gas, arranged coaxially in relation to the first nozzle (2), enclosing the fuel nozzle (3) and forming an annularcross section (12), a gas nozzle II (5) for introducing a stream of air or O2 or a mixed stream of O2 or air and recirculated flue gas, arranged coaxially in relation to the first nozzle (2), enclosing the gas nozzle I (4) and forming an annular cross section (13), a gas nozzle III (6) for introducing a stream of air or recirculated flue gas or a mixed stream of O2 or air and recirculated flue gas, arranged coaxially in relation to the first nozzle (2), enclosing the gas nozzle II (5) and forming an annular cross section (14), wherein, in the gas nozzle outlet region (17), the surface area ofthe annular cross section (13) of the gas nozzle II (5) is in a ratio of 1.2 to 2.0:1 to the surface area of the annular cross section (12) of the gas nozzle I (4) and the surface area of the annularcross section (14) of the gas nozzle III (6) is in a ratio of 0.2 to 0.8:1 to the surface area of the annular cross section (12) of the gas nozzle I (4) and the surface area of the cross section (10)of the first nozzle (2) is in a ratio of 0.01 to 0.1:1 to the surface area of the annular cross section (12) of the gas nozzle I (4).
Description
Technical field
The present invention relates to a kind of circular burner of combustion of fossil fuels and operation method of this circular burner of being used for.
Background technology
Circular burner be except the atomizer burner that has rectangular cross section usually in the combustion chamber of the large-scale generating equipment of combustion of fossil fuels the most frequently used burner.They also usually are called as eddy current type or vortex burner, because the fuel of common oxidant that adds and/or adding will produce vortex or form eddy current by means of swirling device, so that effectively burn thus.For example has a core air hose (core air nozzle in other words) usually by this circular fuel device known to the document " Entwicklung vonschadstoffarmen Staubfeuerungssystemen (development of the ashes combustion system of low harmful substance) " of 76 (1996) the 5th of VGB power station technologies, it is externally surrounded by a cartridge (or fuel nozzle), and this cartridge is externally surrounded by auxiliary air pipe (or auxiliary air nozzle) again.The auxiliary air pipe externally can be surrounded by a tertiary air pipe (or tertiary air nozzle) again, and wherein, whole pipes or nozzle be arranged concentric all, therefore constitutes circular cylindrical cross-section respectively with adjacent pipe or nozzle.By corresponding each pipe or nozzle, will import in the combustion chamber corresponding to the medium that title characterized of pipe or nozzle, with combustion of fossil fuels, for example, by auxiliary air nozzle input auxiliary air.Fuel is imported by fuel nozzle together with its mounting medium, primary air.
Because comprise CO to airborne release known during as the oxidant combustion of fossil fuels by means of air
2Flue gas, and CO
2Possible main cause as the greenhouse effects that make climate change is subjected to more and more severeer public criticism, so people have just proposed oxygen fuel process (Oxyfuel-Prozess), wherein, replaces air, adopts pure oxygen to burn as oxidant.By adopting the pure oxygen from air, obtain O in other words
2, can not discharge flue gas and provide a kind of high-purity CO
2Stream, it can separated and not influence weather ground and disposes.For example by known so so in other words oxygen fuel (Oxyfuel) combustion method of oxygen fuel (Oxyfuel) process of document DE 103 56 703 A1.
For power station or burner supplier and operation enterprise, the result who is obtained by the above-mentioned fact is: on the one hand in view of adopting different fossil fuels to cause different circular burner cross sections because different oxidants needs, on the other hand in view of adopting oxidant, that is air or O
2, cause differently again with differentiated circular burner cross section and at differentiated air-flow aspect the gas type, for example, replace air-flow in conventional operation, when oxygen operating fuel (Oxyfuelbetrieb), cause stream of recycled gases (circulating flue gas).If power station or burner supplier have determined a kind of fossil fuel and a kind of oxidant when the design circular burner, power station operation enterprise refuelling or when air changes oxygen as oxidant into afterwards so, except with circular burner (combustion chamber, a power station has a large amount of this circular burners usually) by having no option new state or the new fuel repacking.The repacking of Yao Qiuing is very disadvantageous from a lot of aspects like this, because in order to reequip, whole power station must be out of service.This stage for example owing to can not generating can cause huge revenue decline.In addition, also need to pay considerable material and mounting cost for new circular burner.
Summary of the invention
The objective of the invention is now, a kind of circular burner is provided, its different fossil fuel that can burn where necessary, for example
-with the dried brown coal of air burning, or
-use O
2Wherein can there be different O in the carrier dried brown coal that burn
2Part by volume, or
-use the air burning soft coal, or
-use O
2Wherein can there be different O in carrier burning soft coal
2Part by volume,
-usefulness air burning oil/gas,
-use O
2Wherein can there be different O in carrier fuel oil/gas
2Part by volume, and have very big adjustable range here.In addition, on the circular burner that newly provides, the velocity of discharge of various air-flow or fuel stream does not allow to surpass or be lower than the velocity interval of regulation, because otherwise just no longer can guarantee the smooth combustion of the fossil fuel that adds, or for the needed air blast palpus of different air-flows maximization design, this is uneconomic.Secondly, the objective of the invention is, the operation method of this circular burner is provided.
For this reason, the invention provides a kind of circular burner that is used for combustion of fossil fuels, it comprises: be used for input air stream or stream of recycled gases or by O
2Or first nozzle of the mixed airflow of air and recycle gas composition, with described first nozzle concentric that be provided with, surround this first nozzle and form the fuel nozzle that is used to spray into fuel of a circular cylindrical cross-section, with concentric that be provided with, the described fuel nozzle of encirclement of described first nozzle and form a circular cylindrical cross-section be used for input air stream or stream of recycled gases or by O
2Or the gas nozzle I of the mixed airflow formed of air and recycle gas, flow or O with the concentric input air that is used for that be provided with, that surround described gas nozzle I and form a circular cylindrical cross-section of described first nozzle
2Stream or by O
2Or the gas nozzle II of the mixed airflow formed of air and recycle gas, with concentric that be provided with, the described gas nozzle II of encirclement of described first nozzle and form a circular cylindrical cross-section be used for input air stream or stream of recycled gases or by O
2Or the gas nozzle III of the mixed airflow of air and recycle gas composition, wherein, in the gas nozzle outlet area, the area of the circular cylindrical cross-section of gas nozzle II is 1.2 to 2.0: 1 with the ratio of the area of the circular cylindrical cross-section of gas nozzle I; The area of the circular cylindrical cross-section of gas nozzle III is 0.2 to 0.8: 1 with the ratio of the area of the circular cylindrical cross-section of gas nozzle I; The area of the cross section of first nozzle is 0.01 to 0.1: 1 with the ratio of the area of the circular cylindrical cross-section of gas nozzle I.
Correspondingly, the invention provides a kind of operation method of circular burner, this circular burner comprises: first nozzle, be provided with described first nozzle is concentric, surround this first nozzle and form the fuel nozzle of a circular cylindrical cross-section, be provided with described first nozzle is concentric, surround described fuel nozzle and form the gas nozzle I of a circular cylindrical cross-section, be provided with described first nozzle is concentric, surround described gas nozzle I and form the gas nozzle II of a circular cylindrical cross-section, be provided with described first nozzle is concentric, surround described gas nozzle II and form the gas nozzle III of a circular cylindrical cross-section, wherein, in the gas nozzle outlet area, the area of the circular cylindrical cross-section of gas nozzle II is 1.2 to 2.0: 1 with the ratio of the area of the circular cylindrical cross-section of gas nozzle I; The area of the circular cylindrical cross-section of gas nozzle III is 0.2 to 0.8: 1 with the ratio of the area of the circular cylindrical cross-section of gas nozzle I; The area of the cross section of first nozzle is 0.01 to 0.1: 1 with the ratio of the area of the circular cylindrical cross-section of gas nozzle I, wherein, and by the described first nozzle input air stream or stream of recycled gases or by O
2Or the mixed airflow formed of air and recycle gas, spray into fuel by described fuel nozzle, by described gas nozzle I input air stream or stream of recycled gases or by O
2Or the mixed airflow of air and recycle gas composition, by described gas nozzle II input air stream or O
2Stream or by O
2Or the mixed airflow formed of air and recycle gas, and by described gas nozzle III input air stream or stream of recycled gases or by O
2Or the mixed airflow of air and recycle gas composition.
The present invention also provides a kind of circular burner that is used for combustion of fossil fuels, and it comprises: be used for input air stream or stream of recycled gases or by O
2Or first nozzle of the mixed airflow of air and recycle gas composition, with described first nozzle concentric that be provided with, surround this first nozzle and form the fuel nozzle that is used to spray into fuel of a circular cylindrical cross-section, with concentric that be provided with, the described fuel nozzle of encirclement of described first nozzle and form a circular cylindrical cross-section be used for input air stream or stream of recycled gases or by O
2Or the gas nozzle I of the mixed airflow formed of air and recycle gas, with concentric that be provided with, the described gas nozzle I of encirclement of described first nozzle and form a circular cylindrical cross-section be used for input air stream or stream of recycled gases or by O
2Or the gas nozzle III of the mixed airflow of air and recycle gas composition, at least three gas nozzle II.1, they are arranged in the circular cylindrical cross-section of described gas nozzle I or described gas nozzle III, are used for input air stream or O
2Stream or by O
2Or the mixed airflow of air and recycle gas composition, wherein, in the gas nozzle outlet area, the area of the cross section of all gas nozzle II.1 is 1.2 to 2.0: 1 with the ratio of the area of the circular cylindrical cross-section of gas nozzle I; The area of the circular cylindrical cross-section of gas nozzle III is 0.2 to 0.8: 1 with the ratio of the area of the circular cylindrical cross-section of gas nozzle I; The area of the cross section of first nozzle is 0.01 to 0.1: 1 with the ratio of the area of the circular cylindrical cross-section of gas nozzle I; At this moment, in order to determine corresponding proportionate relationship, according to the setting of gas nozzle II.1, the area of the circular cylindrical cross-section of the area of the circular cylindrical cross-section of described gas nozzle I or described gas nozzle III is reduced, and the amount of minimizing is the area of the cross section of all gas nozzle II.1.
Correspondingly, the invention provides a kind of operation method of circular burner, this circular burner comprises: first nozzle, be provided with described first nozzle is concentric, surround this first nozzle and form the fuel nozzle of a circular cylindrical cross-section, be provided with described first nozzle is concentric, surround described fuel nozzle and form the gas nozzle I of a circular cylindrical cross-section, be provided with described first nozzle is concentric, surround described gas nozzle I and form the gas nozzle III of a circular cylindrical cross-section, at least three gas nozzle II.1, they are arranged in the circular cylindrical cross-section of described gas nozzle I or described gas nozzle III, wherein, in the gas nozzle outlet area, the area of the cross section of all gas nozzle II.1 is 1.2 to 2.0: 1 with the ratio of the area of the circular cylindrical cross-section of gas nozzle I; The area of the circular cylindrical cross-section of gas nozzle III is 0.2 to 0.8: 1 with the ratio of the area of the circular cylindrical cross-section of gas nozzle I; The area of the cross section of first nozzle is 0.01 to 0.1: 1 with the ratio of the area of the circular cylindrical cross-section of gas nozzle I; At this moment, in order to determine corresponding proportionate relationship, setting according to gas nozzle II.1, the area of the circular cylindrical cross-section of the area of the circular cylindrical cross-section of described gas nozzle I or described gas nozzle III is reduced, the amount that reduces is the area of the cross section of all gas nozzle II.1, wherein, by the described first nozzle input air stream or stream of recycled gases or by O
2Or the mixed airflow formed of air and recycle gas, spray into fuel by described fuel nozzle, by described gas nozzle I input air stream or stream of recycled gases or by O
2Or the mixed airflow of air and recycle gas composition, by described gas nozzle II.1 input air stream or O
2Stream or by O
2Or the mixed airflow formed of air and recycle gas, and by described gas nozzle III input air stream or stream of recycled gases or by O
2Or the mixed airflow of air and recycle gas composition.
By solution of the present invention, the operation method of a kind of circular burner and a kind of circular burner is provided, it has the following advantages:
At O
2There is big flexibility the flow aspect of carrier current, therefore
-the big free degree is being arranged aspect the fuel selection,
-at O
2The O of carrier current
2Also may even there be the big free degree content selection aspect aspect the single cross section of gas with various nozzle,
The needed oxygen of-burning has at the burner place the directly possibility of input,
-big adjustable range arranged.
In a kind of favourable design of the present invention, one of gas nozzle I, II or III are designed to like this or gas nozzle II.1 is designed to so generally, promptly, make and in the oxygen operating fuel, can introduce whole amount of oxygen via its whole cross sections that this amount of oxygen is that to be used for the fuel that burns in the adding of circular burner place needed via an one cross section or under the situation of gas nozzle II.1 by their cross section.
For the burning that realizes that fossil fuel is reliable and stable, advantageously, first nozzle and/or fuel nozzle and/or gas nozzle I and/or gas nozzle II or gas nozzle II.1 and/or gas nozzle III design have a viscous flow ring and/or to turn to throat.
In favourable design of the present invention, first nozzle and/or fuel nozzle and/or gas nozzle I and/or gas nozzle II or gas nozzle II.1 and/or gas nozzle III have scroll member.Can aggravate and optimize the burning of fossil fuel by this measure.Here suitable is that the mutual equidirectional or coiling in the other direction of the scroll member of first nozzle and fuel nozzle that is to say that scroll member is adjusted into, and makes the air-flow of conducting and fuel stream form in the same way or reverse vortex.
A kind of suitable design code of the present invention is at gas nozzle I and/or gas nozzle II place or at gas nozzle II.1 and/or gas nozzle III place, scroll member is adjustable at the burner run duration.Therefore, can control burning in any moment of power station run duration.
A kind of suitable design code of the present invention, the width s of the annulus of the circular cylindrical cross-section of fuel nozzle is 20mm at least.Make the pressure loss that causes by fuel nozzle keep very little by this measure, and can advantageously influence the geometry of other nozzles of circular burner.
Another kind of favourable design code, the longitudinal axis of gas nozzle II.1 is parallel or favour the longitudinal axis or the circular burner setting of first nozzle.
Description of drawings
Describe embodiments of the invention in detail by means of drawing and description below.
Accompanying drawing is represented:
Fig. 1 schematically illustrates the longitudinal section of circular burner of the present invention,
Fig. 2 schematically illustrates the cross section by A-A line among Fig. 1,
Fig. 3 such as Fig. 1, but the expression be another kind of selectable enforcement structure,
Fig. 4 schematically illustrates the cross section by B-B line among Fig. 3,
Fig. 5 such as Fig. 4, but the expression be another kind of selectable enforcement structure,
Fig. 6 is in operation corresponding circular burner-nozzle throat area according to O by means of graphical presentation
2The corresponding relation of carrier bulk flow and gas velocity variations and conversion.
The specific embodiment
Fig. 1 has represented circular burner 1 of the present invention with longitudinal section, and it is suitable for being used for the different fossil fuel that burns.Here circular burner 1 is designed to like this, that is, for example making as required can be with air or the also available O that passes through
2The O of carrier input
2Come burning pulverized dried brown coal or powdery soft coal or oil or gas (for the situation of utilizing circular burner of the present invention to come combustion oil or gas, also need unillustrated oily spray gun or the gas spray gun that is used to import fuel, it is arranged on the circular burner center).Here O
2Carrier can have different O
2Part by volume, wherein, described O
2Carrier is normally by the flue of back, power station next circulating flue gas or recycle gas (Rezigas).Therefore, circular burner of the present invention is not only applicable to the different fuel that burns, and is suitable for adopting different oxidants, that is can be by traditional mode input air or O in the oxygen operating fuel
2, that is pure oxygen, so that form highly purified CO at this
2, it can be separated and can influence weather ground and dispose.As top addressed, oxygen for example can be used as the mixture input with recycle gas, wherein can change the deal of oxygen in mixture.
As O
2The circulating flue gas of carrier (recycle gas) is for example by extracting in the exhaust gases passes that is connected the back, combustion chamber, and with 150 ℃ to 300 ℃ temperature input circular burner 1.For this purpose, it must be heated again by the medium heat exchange with higher temperature sometimes.Recycle gas can have little residual oxygen.
Press Fig. 1 and 2, circular burner 1 of the present invention comprises first nozzle 2 with cross section 10, it is surrounded or parcel by a fuel nozzle 3 with first nozzle, 2 arranged concentric, wherein form a circular cylindrical cross-section 11 between first nozzle 2 and fuel nozzle 3, its annulus radially has a width s.Fuel nozzle 3 is surrounded or wraps up by gas nozzle I4, and this gas nozzle I4 is surrounded or wraps up by gas nozzle II5, and the latter is surrounded or wraps up by gas nozzle III6.Gas nozzle I, II and III4,5,6 all with first nozzle, 2 arranged concentric, wherein, in gas nozzle I, II and III4,5,6, form circular cylindrical cross-section 12,13,14.See that aspect gas flow the end of the outlet side of gas nozzle III6 is connected in the burner throat 18, this burner throat constitutes the intermediate location with unillustrated combustion chamber.
Fig. 3 and 4 has represented the another kind of circular burner 1 of the present invention.Different with the circular burner of pressing Fig. 1 and 2, it does not have arranged concentric and surrounds the gas nozzle II5 of gas nozzle I4, but have for example 8 gas nozzle II.15.1, their longitudinal axis 16 is parallel to the longitudinal axis 15 of first nozzle 2 or circular burner 1, and gas nozzle II.15.1 is arranged in the circular cylindrical cross-section 12 of gas nozzle I4.Replacement longitudinal axis 16 is arranged in parallel with respect to longitudinal axis 15, and the longitudinal axis of gas nozzle II.15.1 also can tilt, that is arranges (not shown) at angle with the longitudinal axis 15 of first nozzle 2.Wherein, gas nozzle II.15.1 can be towards longitudinal axis 15 or also can be deviated from it.Different therewith, also can select as shown in Figure 5 gas nozzle II.15.1 to be arranged in the circular cylindrical cross-section 14 of gas nozzle III6.Gas nozzle II.15.1 has whole cross sections 13.1 altogether.Here, the center of all gas nozzle II.15.1 and is equally spaced advantageously on a reference circle especially mutually.
According to the present invention, first nozzle 2 and gas nozzle I, II or II.1 and III4,5 or 5.1 and 6 cross section 10,12,13 or 13.1 and 14 keep certain relation mutually in gas nozzle outlet area 17.Specifically, the area of gas nozzle II5 circular cylindrical cross-section 13 is 1.2-2.0 with the ratio of gas nozzle I4 circular cylindrical cross-section 12 areas: 1, and the area of gas nozzle III6 circular cylindrical cross-section 14 is 0.2-0.8 with the ratio of the area of gas nozzle I4 circular cylindrical cross-section 12: 1; And cross section 10 areas of first nozzle 2 are 0.01-0.1 with the ratio of the area of gas nozzle I4 circular cylindrical cross-section 12: 1.Can make circular burner 1 obtain maximum flexibility aspect the input of the needed oxidant of burning by means of nozzle 2,4,5 or 5.1 cross-sectional areas different with 6, that is the cross-sectional areas 10,12,13 or 13.1 and 14 by different sizes, can by nozzle 2,4,5 or 5.1 with 6 in other words its cross section 10,12,13 or 13.1 provide extremely different cross-sectional areas with 14 suitable combinations for the different method of operation of burner.Here, all cross sections 10,11,12,13 or 13.1 and 14 are designed to like this, that is, make the gas or the fuel that flow through in corresponding cross section keep the minimal flow speed of needs or the maximum fluidity speed of permission.Wherein, the gas velocity in nozzle 2,4,5 or 5.1 and 6 is between 15m/s and 80m/s.
Gas nozzle outlet area 17 is determined such zone, in this zone, on a corresponding cross section, see the whole cross sections 10,11,12,13 or 13.1,14 that have nozzle 2,3,4,5 or 5.1,6, and different branch air-flows and fuel stream finally before flowing out in the combustion chamber, they flows through respective nozzles 2,3,4,5 or 5.1,6.
The circular cylindrical cross-section 11 of fuel nozzle 3 depends on the mounting medium volume flow of carrying fuel on the one hand, depends on the speed of mounting medium in fuel nozzle 3 on the other hand, and it is generally 10m/s to 35m/s.Thereby, the pressure loss that is caused by fuel nozzle 3 is remained on keep very little in the normal range (NR) in other words, all the other nozzles 2,4,5 or 5.1 and 6 on the other hand, particularly the geometric parameter of first nozzle 2 remains in actual and the attainable size equally, and the radial width s of the annular gap of the circular cylindrical cross-section 11 of fuel nozzle 3 advantageously is designed to 20mm at least.
Fig. 6 has a chart, can exemplaryly be found out by it: according to the O by circular burner 1 input
2Which nozzle combination the carrier bulk flow can adopt.0 to about 20% O
2The carrier bulk flow can only be by cross section 13 or 13.1 inputs of gas nozzle II5 or gas nozzle II.15.1.At O
2It was not by gas nozzle II5 or II.15.1 but by gas nozzle I4 input when the carrier bulk flow increased.If O
2The carrier bulk flow continues to improve, and adds the cross section 13 or 13.1 of gas nozzle II5 or II.15.1 so except that gas nozzle I4.At O
2When the carrier bulk flow continue to increase, become the cross section 13 or 13.1 and 14 of gas nozzle II5 or II.15.1 and III6, then be transformed into the cross section 12 and 14 of gas nozzle I4 and III6, be transformed into whole operational gas nozzle I, II or II.1 and III4,5 or 5.1 and 6 cross section 12,13 or 13.1 and 14 and import corresponding air-flow at last.With last a kind of combination, can be by the maximum O of circular burner 1 input
2The carrier bulk flow.One or two gas nozzle does not have O therein
2Under the situation that the carrier bulk flow flows through, this or these gas nozzle can feed the little tolerance that is used to cool off.If outside gas nozzle III6 does not have O
2Carrier current mistake, then this situation of particularly suitable.
For the oxygen operating fuel, circular fuel device 1 can be designed to like this, promptly, make gas nozzle I, II or II.1 or III4,5 or 5.1 or 6 cross section 12,13 or 13.1 or 14 be adapted to pass through an one cross section and import needed whole amount of oxygen, wherein, needed here amount of oxygen can be used as pure O
2The air-flow input.In order to reduce the spike temperature in the combustion chamber, gas nozzle I, the II that at least one is other or II.1, III4,5 or 5.1,6 also must the input recycle gas.
Utilizing circular burner 1 of the present invention to come for example dried brown coal of combustion of fossil fuels, soft coal, oil or gas in oxygen operating fuel mode, that is the oxidant that is used for burning is when being pure oxygen, input at burner 1 place for example can be: fossil fuel is by fuel nozzle 3 inputs, O
2Import by gas nozzle II5 or gas nozzle II.15.1, recycle gas that is circulating flue gas are imported by first nozzle 2, and import by fuel nozzle 3 with by gas nozzle I and III4,6 as vector gas.Perhaps, the circulating current in first nozzle 2, fuel nozzle 3 and gas nozzle I and III4,6 can be by dispensing oxygen composition, and gives the O in gas nozzle II5 or the II.15.1
2Air-flow dispensing recirculated air composition.Data for example relate to 100% volumetric flow of gas and flow through circular burner 1, as mentioned above, at throughflow hour, can cancel the throughflow (see figure 6) of individual gases nozzle.But and a small amount of refrigerating gas of conducting where necessary.
In the conventional operation of circular burner 1, that is with air during, for example flowing through 100% volumetric flow of gas that is during in full load operation burning, by whole nozzles 2,3,4,5 or 5.1 and 6 input airs as the oxidant combustion of fossil fuels.In fuel nozzle 3, air is as the mounting medium of fuel.Perhaps, also can in respective nozzles 2,4,5 or 5.1 and 6, add circulating flue gas (recycle gas) to air.When less volumetric flow of gas flows through, that is when operation at part load is burnt, can can pass through closing gate individual gases nozzle as already mentioned above, so throughflow can be conditioned or adjust to and is almost 0 very little cooling medium throughflow.
For the flame of stablizing circular burner 1 or guide it, can baulk ring 7 be installed and/or turn to throat 8 by the method for having verified.They can be placed in respectively on each nozzle 2,3,4,5 or 5.1 and 6.In addition, indivedual or all gas tributary or fuel stream produce vortexs by the scroll members 9 that are arranged in respective cross section 10,11,12,13 or 13.1 and 14, and at this moment the air-flow first nozzle 2 and fuel nozzle 3 (as carrier gas stream) in can equidirectional mutually or also can the opposite direction vortex.Scroll member 9 at gas nozzle I, II or II.1 or III4,5 or 5.1 or 6 places also can be designed to can be adjusted at the burner run duration, so that be in operation burning is exerted one's influence.(for example full load air operation or at certain O of preferred running status is depended in the selection of described device
2Move or the like during deal) with the combination of relevant therewith circular burner 1 fuel device cross section.Therefore under these ruuning situations, can advantageously control the flame guiding.
The Reference numeral table
1 circular burner
2 first nozzles
3 fuel nozzles
4 gas nozzle I
5 gas nozzle II
5.1 gas nozzle II.1
6 gas nozzle III
7 baulk rings
8 turn to throat
9 scroll members
The cross section of 10 first nozzles
The circular cylindrical cross-section of 11 fuel nozzles
The circular cylindrical cross-section of 12 gas nozzle I
The circular cylindrical cross-section of 13 gas nozzle II
13.1 gas nozzle II.1 cross section summation
The circular cylindrical cross-section of 14 gas nozzle III
The longitudinal axis of 15 circular burners or first nozzle
The longitudinal axis of 16 gas nozzle II.1
17 gas nozzle outlet areas
18 burner throats
Claims (12)
1. be used for the circular burner of combustion of fossil fuels, it comprises:
-be used for input air stream or stream of recycled gases or by O
2Or first nozzle (2) of the mixed airflow of air and recycle gas composition,
-with described first nozzle (2) concentric that be provided with, surround this first nozzle and form the fuel nozzle that is used to spray into fuel (3) of a circular cylindrical cross-section (11),
-with described first nozzle (2) concentric that be provided with, surround described fuel nozzle (3) and form a circular cylindrical cross-section (12) be used for input air stream or stream of recycled gases or by O
2Or the gas nozzle I (4) of the mixed airflow of air and recycle gas composition,
-with described first nozzle (2) concentric that be provided with, surround described gas nozzle I (4) and form a circular cylindrical cross-section (13) be used for input air stream or O
2Stream or by O
2Or the gas nozzle II (5) of the mixed airflow of air and recycle gas composition,
-with described first nozzle (2) concentric that be provided with, surround described gas nozzle II (5) and form a circular cylindrical cross-section (14) be used for input air stream or stream of recycled gases or by O
2Or the gas nozzle III (6) of the mixed airflow of air and recycle gas composition,
Wherein, in gas nozzle outlet area (17), the ratio of the area of the area of the circular cylindrical cross-section (13) of gas nozzle II (5) and the circular cylindrical cross-section (12) of gas nozzle I (4) is 1.2 to 2.0: 1; The ratio of the area of the area of the circular cylindrical cross-section (14) of gas nozzle III (6) and the circular cylindrical cross-section (12) of gas nozzle I (4) is 0.2 to 0.8: 1; The ratio of the area of the area of the cross section (10) of first nozzle (2) and the circular cylindrical cross-section (12) of gas nozzle I (4) is 0.01 to 0.1: 1.
2. be used for the circular burner of combustion of fossil fuels, it comprises:
-be used for input air stream or stream of recycled gases or by O
2Or first nozzle (2) of the mixed airflow of air and recycle gas composition,
-with described first nozzle (2) concentric that be provided with, surround this first nozzle and form the fuel nozzle that is used to spray into fuel (3) of a circular cylindrical cross-section (11),
-with described first nozzle (2) concentric that be provided with, surround described fuel nozzle (3) and form a circular cylindrical cross-section (12) be used for input air stream or stream of recycled gases or by O
2Or the gas nozzle I (4) of the mixed airflow of air and recycle gas composition,
-with described first nozzle (2) concentric that be provided with, surround described gas nozzle I (4) and form a circular cylindrical cross-section (14) be used for input air stream or stream of recycled gases or by O
2Or the gas nozzle III (6) of the mixed airflow of air and recycle gas composition,
-at least three gas nozzle II.1 (5.1), they are arranged in the circular cylindrical cross-section (12,14) of described gas nozzle I (4) or described gas nozzle III (6), are used for input air stream or O
2Stream or by O
2Or the mixed airflow of air and recycle gas composition,
Wherein, in gas nozzle outlet area (17), the ratio of the area of the area of the cross section (13.1) of all gas nozzle II.1 (5.1) and the circular cylindrical cross-section (12) of gas nozzle I (4) is 1.2 to 2.0: 1; The ratio of the area of the area of the circular cylindrical cross-section (14) of gas nozzle III (6) and the circular cylindrical cross-section (12) of gas nozzle I (4) is 0.2 to 0.8: 1; The ratio of the area of the area of the cross section (10) of first nozzle (2) and the circular cylindrical cross-section (12) of gas nozzle I (4) is 0.01 to 0.1: 1; At this moment, in order to determine corresponding proportionate relationship, setting according to gas nozzle II.1 (5.1), the area of the area of the circular cylindrical cross-section (12) of described gas nozzle I (4) or the circular cylindrical cross-section (14) of described gas nozzle III (6) is reduced, and the amount of minimizing is the area of the cross section (13.1) of all gas nozzle II.1 (5.1).
3. by claim 1 or 2 described circular burners, it is characterized by: gas nozzle I (4) or gas nozzle II (5) or gas nozzle III (6) design by following mode or the whole of gas nozzle II.1 (5.1) design by following mode: by cross section (12,13,13.1,14) respective design, in the oxygen operating fuel via an one cross section (12,13,14) can import or via whole cross sections (13.1) of gas nozzle II.1 (5.1) and to be used for the needed whole amount of oxygen of fuel that burning locates to add at circular burner (1).
4. by claim 1 or 2 described circular burners, it is characterized by: at least one designs of nozzles among first nozzle (2), fuel nozzle (3), gas nozzle I (4), gas nozzle II (5) or the gas nozzle III (6) has a baulk ring (7).
5. by claim 1 or 2 described circular burners, it is characterized by: at least one designs of nozzles among first nozzle (2), fuel nozzle (3), gas nozzle I (4), gas nozzle II (5) or the gas nozzle III (6) has one to turn to throat (8).
6. by claim 1 or 2 described circular burners, it is characterized by: at least one designs of nozzles among first nozzle (2), fuel nozzle (3), gas nozzle I (4), gas nozzle II (5) or the gas nozzle III (6) has a scroll member (9).
7. by the described circular burner of claim 6, it is characterized by: the equidirectional mutually or coiling in the other direction of the corresponding scroll member (9) of first nozzle (2) and fuel nozzle (3).
8. by the described circular burner of claim 6, it is characterized by: at least on a gas nozzle I (4), gas nozzle II (5) or gas nozzle II.1 (5.1) or gas nozzle III (6), scroll member (9) is designed to can be adjusted in that burner is in service.
9. by claim 1 or 2 described circular burners, it is characterized by: the width (s) of the annulus of the circular cylindrical cross-section (11) of fuel nozzle (3) is 20mm at least.
10. by the described circular burner of claim 2, it is characterized by: the longitudinal axis (16) of each gas nozzle II.1 (5.1) longitudinal axis (15) parallel or that favour first nozzle (2) is provided with.
11. the operation method of circular burner, this circular burner comprises:
-the first nozzle (2),
-with described first nozzle (2) concentric that be provided with, surround this first nozzle and form the fuel nozzle (3) of a circular cylindrical cross-section (11),
-with described first nozzle (2) concentric that be provided with, surround described fuel nozzle (3) and form the gas nozzle I (4) of a circular cylindrical cross-section (12),
-with described first nozzle (2) concentric that be provided with, surround described gas nozzle I (4) and form the gas nozzle II (5) of a circular cylindrical cross-section (13),
-with described first nozzle (2) concentric that be provided with, surround described gas nozzle II (5) and form the gas nozzle III (6) of a circular cylindrical cross-section (14),
Wherein, in gas nozzle outlet area (17), the ratio of the area of the area of the circular cylindrical cross-section (13) of gas nozzle II (5) and the circular cylindrical cross-section (12) of gas nozzle I (4) is 1.2 to 2.0: 1; The ratio of the area of the area of the circular cylindrical cross-section (14) of gas nozzle III (6) and the circular cylindrical cross-section (12) of gas nozzle I (4) is 0.2 to 0.8: 1; The ratio of the area of the area of the cross section (10) of first nozzle (2) and the circular cylindrical cross-section (12) of gas nozzle I (4) is 0.01 to 0.1: 1,
Wherein, by described first nozzle (2) input air stream or stream of recycled gases or by O
2Or the mixed airflow of air and recycle gas composition,
Spray into fuel by described fuel nozzle (3),
By described gas nozzle I (4) input air stream or stream of recycled gases or by O
2Or the mixed airflow of air and recycle gas composition,
By described gas nozzle II (5) input air stream or O
2Stream or by O
2Or the mixed airflow of air and recycle gas composition, and
By described gas nozzle III (6) input air stream or stream of recycled gases or by O
2Or the mixed airflow of air and recycle gas composition.
12. the operation method of circular burner, this circular burner comprises:
-the first nozzle (2),
-with described first nozzle (2) concentric that be provided with, surround this first nozzle and form the fuel nozzle (3) of a circular cylindrical cross-section (11),
-with described first nozzle (2) concentric that be provided with, surround described fuel nozzle (3) and form the gas nozzle I (4) of a circular cylindrical cross-section (12),
-with described first nozzle (2) concentric that be provided with, surround described gas nozzle I (4) and form the gas nozzle III (6) of a circular cylindrical cross-section (14),
-at least three gas nozzle II.1 (5.1), they are arranged in the circular cylindrical cross-section (12,14) of described gas nozzle I (4) or described gas nozzle III (6),
Wherein, in gas nozzle outlet area (17), the ratio of the area of the area of the cross section (13.1) of all gas nozzle II.1 (5.1) and the circular cylindrical cross-section (12) of gas nozzle I (4) is 1.2 to 2.0: 1; The ratio of the area of the area of the circular cylindrical cross-section (14) of gas nozzle III (6) and the circular cylindrical cross-section (12) of gas nozzle I (4) is 0.2 to 0.8: 1; The ratio of the area of the area of the cross section (10) of first nozzle (2) and the circular cylindrical cross-section (12) of gas nozzle I (4) is 0.01 to 0.1: 1; At this moment, in order to determine corresponding proportionate relationship, setting according to gas nozzle II.1 (5.1), the area of the area of the circular cylindrical cross-section (12) of described gas nozzle I (4) or the circular cylindrical cross-section (14) of described gas nozzle III (6) is reduced, the amount that reduces is the area of the cross section (13.1) of all gas nozzle II.1 (5.1)
Wherein, by described first nozzle (2) input air stream or stream of recycled gases or by O
2Or the mixed airflow of air and recycle gas composition,
Spray into fuel by described fuel nozzle (3),
By described gas nozzle I (4) input air stream or stream of recycled gases or by O
2Or the mixed airflow of air and recycle gas composition,
By described gas nozzle II.1 (5.1) input air stream or O
2Stream or by O
2Or the mixed airflow of air and recycle gas composition, and
By described gas nozzle III (6) input air stream or stream of recycled gases or by O
2Or the mixed airflow of air and recycle gas composition.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200610011326 DE102006011326C5 (en) | 2006-03-09 | 2006-03-09 | circular burner |
| DE102006011326.8 | 2006-03-09 | ||
| PCT/DE2007/000384 WO2007101427A1 (en) | 2006-03-09 | 2007-03-02 | Round burner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101400947A CN101400947A (en) | 2009-04-01 |
| CN101400947B true CN101400947B (en) | 2011-02-09 |
Family
ID=38110255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007800084912A Expired - Fee Related CN101400947B (en) | 2006-03-09 | 2007-03-02 | Circular burner and its operation method |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP1991810A1 (en) |
| CN (1) | CN101400947B (en) |
| AU (1) | AU2007222784B2 (en) |
| DE (1) | DE102006011326C5 (en) |
| WO (1) | WO2007101427A1 (en) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007030269B4 (en) * | 2007-06-28 | 2014-07-17 | Mitsubishi Hitachi Power Systems Europe Gmbh | Pulverized coal burner for burning fuel supplied in dense phase conveying |
| EP2080952A1 (en) * | 2008-01-17 | 2009-07-22 | L'AIR LIQUIDE, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude | Burner and method for alternately implementing an oxycombustion and an air combustion |
| KR101228359B1 (en) * | 2008-03-06 | 2013-02-01 | 일렉트릭 파워 디벨롭먼트 컴퍼니 리미티드 | Pulverized coal burner for oxyfuel combustion boiler |
| PL2479491T3 (en) * | 2011-01-20 | 2014-08-29 | Fortum Oyj | Method and burner for burning lean gas in a power plant boiler |
| DE102011011207A1 (en) * | 2011-02-14 | 2012-08-16 | Air Liquide Deutschland Gmbh | Burner for uniform heating of a long oven |
| US8920159B2 (en) * | 2011-11-23 | 2014-12-30 | Honeywell International Inc. | Burner with oxygen and fuel mixing apparatus |
| DE102011056655B4 (en) | 2011-12-20 | 2013-10-31 | Alstom Technology Ltd. | Burner for burning a dusty fuel for a boiler with plasma ignition burner |
| CN102944016B (en) * | 2012-12-11 | 2016-01-20 | 开泰镁业有限公司 | Large-scale vertical reduction furnace coal burner |
| CN103062764B (en) * | 2013-01-25 | 2015-11-18 | 福建永恒能源管理有限公司 | A kind of low nitrogen powder fuel combustor |
| CN103277795B (en) * | 2013-05-27 | 2015-05-20 | 中国科学院广州能源研究所 | Gas burner capable of adjusting gas to be self-recycling |
| WO2016179823A1 (en) * | 2015-05-14 | 2016-11-17 | Zheng Shi | System and method for combustion of pulverized solid fuels in small and medium scale boilers |
| US10711994B2 (en) | 2017-01-19 | 2020-07-14 | General Electric Technology Gmbh | System, method and apparatus for solid fuel ignition |
| WO2019104614A1 (en) * | 2017-11-30 | 2019-06-06 | 乔治洛德方法研究和开发液化空气有限公司 | Oxidant-multifuel burner capable of being used for solid fuel and gas fuel |
| CN113508261A (en) * | 2018-12-21 | 2021-10-15 | 塞拉斯热能技术有限责任公司 | Oxygen forehearth burner assembly |
| CN112178633A (en) * | 2020-09-29 | 2021-01-05 | 湖北赤焰热能工程有限公司 | Concentrated double-air-regulation cyclone burner and method |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1868003U (en) * | 1962-02-10 | 1963-02-28 | Steinmueller Gmbh L & C | BURNERS FOR DUST COAL FIRING. |
| DE8308076U1 (en) * | 1983-03-18 | 1987-10-22 | Stubinen Utveckling Ab, Stockholm, Se | |
| US4857075A (en) * | 1988-05-19 | 1989-08-15 | The Dow Chemical Company | Apparatus for use with pressurized reactors |
| DE4435640C2 (en) * | 1994-10-06 | 2001-01-04 | Steinmueller Gmbh L & C | Burners for the combustion of dusty fuel |
| DE19527083A1 (en) * | 1995-07-25 | 1997-01-30 | Lentjes Kraftwerkstechnik | Process and burner for reducing NO¶x¶ formation from coal dust combustion |
| FR2772888B1 (en) * | 1997-12-24 | 2000-03-10 | Pillard Chauffage | IMPROVEMENT TO SOLID FUEL BURNERS |
| HUP0302402A2 (en) * | 2000-08-04 | 2003-10-28 | Babcock-Hitachi Kabushiki Kaisha | Solid fuel burner and combustion method using solid fuel burner |
| ATE365891T1 (en) * | 2001-01-18 | 2007-07-15 | Alstom Power Boiler Gmbh | BURNER FOR COMBUSTING DUSTY FUEL |
| DE10356703A1 (en) * | 2003-11-28 | 2005-07-14 | Vattenfall Europe Generation Ag & Co. Kg | Method of burning fossil fuels in steam generator using oxy-fuel process, by using waste gas to preheat oxygen used in combustion |
| DE102004059679B4 (en) * | 2003-12-16 | 2005-12-22 | Alstom Power Boiler Gmbh | Round burner for combustion of dusty fuel |
-
2006
- 2006-03-09 DE DE200610011326 patent/DE102006011326C5/en not_active Expired - Fee Related
-
2007
- 2007-03-02 WO PCT/DE2007/000384 patent/WO2007101427A1/en active Application Filing
- 2007-03-02 EP EP07711219A patent/EP1991810A1/en not_active Withdrawn
- 2007-03-02 CN CN2007800084912A patent/CN101400947B/en not_active Expired - Fee Related
- 2007-03-02 AU AU2007222784A patent/AU2007222784B2/en not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| AU2007222784A1 (en) | 2007-09-13 |
| AU2007222784B2 (en) | 2011-02-24 |
| CN101400947A (en) | 2009-04-01 |
| DE102006011326A1 (en) | 2007-09-13 |
| WO2007101427A1 (en) | 2007-09-13 |
| DE102006011326B4 (en) | 2008-04-17 |
| DE102006011326C5 (en) | 2015-03-19 |
| EP1991810A1 (en) | 2008-11-19 |
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