CN104285100A - Process for producing flat flame by oxy-solid fuel burner - Google Patents
Process for producing flat flame by oxy-solid fuel burner Download PDFInfo
- Publication number
- CN104285100A CN104285100A CN201180076301.7A CN201180076301A CN104285100A CN 104285100 A CN104285100 A CN 104285100A CN 201180076301 A CN201180076301 A CN 201180076301A CN 104285100 A CN104285100 A CN 104285100A
- Authority
- CN
- China
- Prior art keywords
- fuel
- oxidizing agent
- stove
- stream
- primary oxidizing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- F23C5/14—Disposition of burners to obtain a single flame of concentrated or substantially planar form, e.g. pencil or sheet flame
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D1/00—Burners for combustion of pulverulent fuel
- F23D1/06—Burners producing sheet flames
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L7/00—Supplying non-combustible liquids or gases, other than air, to the fire, e.g. oxygen, steam
- F23L7/007—Supplying oxygen or oxygen-enriched air
-
- 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
- F23D2900/21—Burners specially adapted for a particular use
- F23D2900/21001—Burners specially adapted for a particular use for use in blast furnaces
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Abstract
A process for producing a flat flame in an industrial melting furnace using solid fuel is provided. The flat flame is produced by a burner combusting particulate fuel by injecting a plurality of fuel streams (4) lying in a plane above a plurality of high speed primary oxidant steams (6) lying in a different plane. The velocity of the fuel streams (4) is decreased just upstream of the burner block front face in order to slow down the fuel streams (4) to allow a sufficiently long residence time in the furnace for satisfactory burnout and avoid accumulation of fuel particles inside the fuel nozzle.
Description
Background
Invention field
The present invention relates to solid fuel burner, what particularly can produce flat flame type (flame front) contains oxygen solid fuel burner, and it is particularly suited for melting furnace and correlation technique, especially the requirement of glass furnace.Correlation technique
For the melting method of industry furnace, it is desirable to that there is the flame on molten bath (such as glass or metal) with wider coverage rate.A possible route uses flat flame.
Usually, natural gas or fuel oil flat-flame burner produce the flame than wide three times of conventional oxygenated fuel burner.On the other hand, the most frequently used solid fuel burner has or does not have generation cylindrical fire, instead of structure assured by the pipe of the whirlpool of flat flame.It is very favorable that the pipe with whirlpool assures burner to solid-fuelled burning, because the recirculation zone produced by strong whirlpool helps to keep flame holding.But cylindrical fire provides the less molten bath coverage rate than melting method requirement inherently.
Solid fuel, such as petroleum coke or coal are the main material sources of fuel in the world.And petroleum coke (petroleum coke) is the accessory substance of petro chemical industry, wherein it produces due to oil refining method, and coal is natural products.Petroleum coke demonstrates the handling property being similar to coal.
At present, different apparatus and method can be used for coal is burnt in stove and boiler.Coal is usually along with the mixture (" synthesis of air ") of air or oxygen and fuel gas transmits.Fuel is introduced in combustion zone as elementary stream.Inject other oxidant dividually to burn completely.Depend on that eddy current oxidant and burner geometry are as Quarl size, syringe blockage ratio, gas velocity and ratio of momentum, can realize various hybrid mode, sometimes different hybrid modes produces significantly different flame figures and length.
Two kinds of conventional powdery coal burners comprise whirlpool stabilisation pipe and assure burner and S type burner.
Whirlpool stabilisation pipe assures burner six during the last ten years for making multiple coal burn in many boiler size.Burner is made up of central nozzle, primary oxidizing agent and powdery coal is fed wherein.Coal passes through the impeller rapid dispersion of shower nozzle (tip) in secondary stream.Gentle whirlpool produces columniform flame plume.
20th century, the eighties developed S type burner.Control secondary air stream and whirlpool respectively, this can make this kind of burner with higher efficiency of combustion and Mechanical Reliability operation.If provide the design principle identical with circular burner, then the flame profile of S type burner is similar to and is assured desired by burner by whirlpool stabilisation pipe.
At introducing NO
xafter discharge regulation, develop a large amount of low NO
xburner, comprises US4,836,772 and US4,479, disclosed in 442 those.Due to NO
xemission level obviously relates to and substantially flows composite character, and the International Flame Research Foundation (IFRF) determines four kinds of dissimilar flames: type 0, Class1, type 2 and type 3.Type 2 can be considered to the most common flame pattern of solid fuel ignition, but due to some object, uses other type once in a while.Although in the burner of other type, hybrid mode is very different, and common burner structure is that pipe is assured, and makes the flame profile of expecting be columniform.It shall yet further be noted that for all situations, primary oxidizing agent and flow in fuel are surrounded in the secondary oxidation agent being generally the main material source of oxidant completely.
A large amount of improvement of burner design are made to meet stricter NO
xregulations.Such as, US2005/0092220A1 discloses solid fuel burner, and it can promote that the fuel point joint preventing to be caused by combustion ash of fighting gushes.But this improvement changes the basic configuration of cylindrical fire not manyly.
Develop the industry furnace of flat-flame burner for combustion of natural gas and fuel oil combustion, because they produce the high radiative flame of high surface area on molten bath.Such as, US5,611,682 describe classification oxygenated fuel burner to produce the usually flat rich fuel flame covering high radiation poor fuel flame.US2010/0167219A1 also discloses and produces flat flame by burner, and described burner comprises the body of heater hole being transitioned into circular cross-section from elliptic cross-section.In conventional gas burning or fuel oil combustion parallel shafting method, oxidant and/or fuel inject stove to form flat shape over a large area as high-speed jet by burner.When only a kind of in oxidant and flow in fuel injects as high-speed jet, expect that other stream is carried with high-speed jet.
The application of natural gas/oil flat flame concept in solid fuel ignition relates to significant uncertainty, mainly due to solid fuel ignition lag longer compared with gas or liquid fuel.More specifically, think that the difficulty that the technological challenge relevant to solid fuel ignition is caught fire by solid fuel particle produces.For solving this problem, most solid fuel burner has strong whirlpool and assures structure with the pipe surrounding flow in fuel completely.
Generally speaking, improve eddy current and cause shorter flame and surface area coverage less on molten bath with the flame remained adhered on burner.On the other hand, eddy current is reduced to realize the flame that longer flame and larger surface area can cause instability.
Therefore, the burner that can realize stable wide flame when using solid fuel is needed.
General introduction
Disclosing uses solid fuel produces the method for flat flame in industry furnace, and it comprises the following steps.The phase co-altitude that Part I primary oxidizing agent rises as two strands or more stock high speed primary oxidizing agent streams in spontaneous combustion body of heater (burner block) bottom surface is injected stove from burner block front.The phase co-altitude risen in spontaneous combustion body of heater bottom surface above high speed primary oxidizing agent stream by least two strands of granular fuel streams injects stove from burner block front, and wherein granular fuel stream comprises with transmitting gas fluidized solid fuel particle.Part II primary oxidizing agent is injected stove with the form of two strands or more crural ring shape streams, and per share annular stream is around corresponding flow in fuel described in one.The first and second part primary oxidizing agents are made in the first combustion zone, to burn to produce flat flame and imperfect combustion product with flow in fuel in stove.Secondary oxidant injects stove from burner block front as at least one secondary oxidant stream above the injection of flow in fuel.Secondary oxidant and imperfect combustion product burn in the second combustion zone.Burner block has at least two fuel channels, and at least two strands of granular fuel streams inject stove from described passage.Fuel channel have separately extend through it fuel nozzle to limit the annular channels between the inner surface of fuel channel and the outer surface of fuel nozzle.Part II primary oxidizing agent injects stove from annular channels.The point of fuel nozzle in upstream, burner block front stops, and makes each flow in fuel flow out the end of associated fuel nozzle and mix with Part II primary oxidizing agent in fuel passage before injection stove.
The method can comprise one or more following aspect:
-secondary oxidant stream to inject under the angle of flat flame.
-high speed primary oxidizing agent stream injects stove with the axial velocity of 10-50m/s.
-at least two bursts of flow in fuel inject stove with the axial velocity being not more than 6m/s.
-Part II primary oxidizing agent injects stove with whirlpool.
-Part II primary oxidizing agent comprises the 5-10% being injected the total amount of the oxidant of stove by the first and second part primary oxidizing agents and secondary oxidant stream.
-flow in fuel injects stove with whirlpool.
-high speed primary oxidizing agent stream injects stove with whirlpool separately.
-transmit gas to be selected from air, CO
2and flue gas.
-at least two strands of granular fuel streams comprise two strands of granular fuel streams.
-at least two strands of granular fuel streams comprise four strands of granular fuel streams.
-at least two strands of high speed primary oxidizing agent streams comprise two strands of primary oxidizing agent streams.
-at least one secondary oxidant stream comprise two strands of secondary oxidant streams.
-the method comprises step further: fed by transmission gas and have in the fuel dispenser of the hopper comprising granular fuel, adjust and construct fuel dispenser to produce towards the granular fuel stream gas fluidized by transmission of burner block, wherein be divided at least two strands of granular fuels from fuel dispenser towards the granular fuel of burner block and transmission gas flow and transmit gas flow, it comprises the described at least two strands of granular fuel streams injecting stove.
-separate from the point of stream in burner block upstream of dispenser.
-separate in burner block inside from the stream of dispenser.
Accompanying drawing is sketched
About the further understanding of character of the present invention and object, should with reference to following detailed description and accompanying drawing, wherein similar element provides with same or similar reference number, and wherein:
Fig. 1 is the front view of an embodiment of burner block of the present invention.
Fig. 2 is the front view of another embodiment of burner block of the present invention.
Fig. 3 injects the fuel of stove and the schematic diagram of oxidant injection.
Fig. 4 is the first embodiment of the cross-sectional view strength of the Fig. 2 obtained along line A-A.
Fig. 5 is the second embodiment of the cross-sectional view strength of the Fig. 2 obtained along line A-A.
Preferred embodiment describes
According to the present invention, flat flame to inject granular fuel stream (with the gas fluidized particulate solid fuel of transmission) and realize above the Part I primary oxidizing agent injecting stove with the form of multiply high speed stream below the injection of secondary oxidation agent.Each flow in fuel injects stove from the nozzle be placed in fuel passage.Fuel passage is occur from burner block front, extends through the form in the hole of burner block.Nozzle to extend in hole in the downstream of burner block front upstream end to form recess between burner block front and nozzle downstream.Each nozzle arranges with diameter to allow the annular space between internal surface of hole and nozzle outer surface.Part II primary oxidizing agent also injects stove with around each flow in fuel from annular space.
Except proposition granular fuel realizes except the new mechanism of flat flame, the invention solves problem intrinsic in granular fuel burning.In order to realize, fuel particle is gratifying to burnout, and fuel flow rate must be not too high.This is because fuel particle needs to burn satisfactorily before they clash into furnace wall.Contrary with the natural gas of conflagration or fuel oil, the solid fuel particle of relatively more slow combustion requires that the relatively longer time of staying is to realize gratifying burnouting.On the other hand, too low fuel flow rate may cause combustion zone and flame to rise due to buoyancy.Product, too low fuel flow rate can cause fuel particle to be accumulated in fuel nozzle, because the underspeed transmitting gas is with by fuel particle fluidisation.
By at full speed injecting primary oxidizing agent stream, can prevent combustion zone and flame from rising due to buoyancy, although relatively low fuel flow rate.Carry in high speed primary oxidizing agent stream to a certain extent this is because transmission gas and fuel particle become.Meanwhile, solid fuel particle still allows that enough time of staying to burnout satisfactorily before shock furnace wall.Therefore, can say that above or below the multiply stream of high speed primary oxidizing agent stream, inject multiply granular fuel flow admission realizes flat flame with granular fuel burning-burner.
Any mealy solid particle fuel that solid particle fuel can be less than 300 μm for particle mean size.Usually, fuel is coal or petroleum coke.Transmitting gas can be air, recirculated flue gas or CO
2(non-recirculated flue gas).The minimum transmitting gas by required for particulate solid fuel fluidisation (and not causing the obvious accumulation of particulate solid fuel in burner block) and speed know in solid particle fuel burning-burner arts.The each flow in fuel injecting stove usually has cylindrical cross section and optionally has whirlpool.Whirlpool serves as other flameholder, because its helps flow in fuel mix with ambient oxidant quickly and its axial momentum is emitted in transverse direction quickly.
Recess plays two effects.First, recess causes the speed of flow in fuel to be down to required muzzle velocity because it occurs from the downstream of nozzle.This is important, because not this recess, then the speed of flow in fuel can not be down to by transmitting gas by below the minimum speed of solid fuel particle satisfactorily needed for fluidisation.Typical industrial standard has the transmission gas velocity higher than about 15m/s.It is desirable to realize the speed lower than minimum fluidization velocity, because it allows fuel particle in less space as the inside of industry furnace realizes burnouting.At higher velocities, fuel particle can clash into furnace wall before burnouting.The second, use this recess, the mixing of slight amount can be present between flow in fuel and primary oxidizing agent annular flow, and described annular stream is at combustion furnace between honorable and nozzle downstream.This slight pre-blend approach improves the oxygen availability and enhancing flame holding of catching fire.
Distance (i.e. recess) between burner block front with nozzle downstream can be with 2-10cm equally large (such as 3cm or 6cm or 9cm).Recess can have constant cross sectional dimensions.In other words, it can have the cylindrical shape being furnished with constant diameter.As selection, recess can outward taper.In this latter case, the downstream that the Kong Yu burner block front of formation fuel passage is adjacent broadens.Convergent can to start or it can start at the some place of fuel nozzle downstream upstream in the downstream of fuel nozzle.The recess of outward taper is favourable, because it expands and slows down flow in fuel when it occurs from fuel nozzle.This helps to realize enough low flow in fuel injection speed and burnouts to allow that fuel particle is gratifying before shock furnace wall, also keeps the minimum speed being enough to the granular fuel fluidisation made in fuel nozzle simultaneously.
Although due to security reason, primary oxidizing agent and secondary oxidant be normally industrial pure oxygen separately, and it can comprise other gas of minor amount.Whether the concrete purity of industry pure oxygen depends on preparation method and is purified further by the oxygen of generation.Such as, industrial pure oxygen can be the gaseous oxygen from air-separating plant, and Cryogenic air separation is become main oxygen and nitrogen stream by described air-separating plant, and in this case, gaseous oxygen has the concentration more than 99%vol/vol.Industry pure oxygen is prepared by the evaporation of liquid oxygen (it is liquefied by the oxygen from air-separating plant), and it also has the purity more than 99%vol/vol in this case.Industry pure oxygen is also by the preparation of Vacuum Pressure Swing Adsorption (VSA) device, and in this case, it has the purity of about 92-93%vol/vol usually.Industry pure oxygen can be derived from the oxygen technology of preparing of other type any used in industrial gasses industry.
High speed primary oxidizing agent stream has cylindrical cross section usually.As mentioned above, the main purpose of high speed primary oxidizing agent stream guarantees the flatness of flame by being transported out of from flow in fuel by fuel particle.High speed primary oxidizing agent stream also provides the partial combustion of fuel in the first combustion zone.The effect of secondary oxidant stream is the burning completely realizing solid particle fuel, allows that burning classification is to reduce NO simultaneously
x.This realizes by the oxidant total amount needed for burning is divided into two parts: a part is used for primary oxidizing agent and a part is used for secondary oxidant.Can say that secondary oxidant stream and high speed primary oxidizing agent stream surround flame flow and burn completely to realize it.The total amount of the oxidant injected by burner is specified as follows between primary oxidizing agent and first and second part of secondary oxidant: 20-40% Part I primary oxidizing agent (i.e. high speed primary oxidizing agent stream); 50-70% secondary oxidant; With 5-10% Part II primary oxidizing agent (namely around the annular stream of the primary oxidizing agent of flow in fuel).
Secondary oxidant stream can to inject stove downwards towards the angle θ of flame.If the speed of flow in fuel and high speed primary oxidizing agent stream causes the flame risen up slowly, strengthen the confining force of flat flame at horizontal plane to inject secondary oxidant stream towards the angle θ of flame.Angle θ is generally 4-10.In one embodiment, it is 7.
Each primary oxidizing agent stream (no matter high velocity fuel stream below or the annular stream around flow in fuel) and/or each secondary oxidant stream optionally can become whirlpool.For the fuel with relatively low volatile content, fuel strengthened further with mixing by using the whirlpool of 40 ° at the most (especially for oxidant streams) of oxidant.
High speed primary oxidizing agent stream has than composite fuel stream and the higher axial velocity of looped second portion primary oxidizing agent.Usually, each high speed primary oxidizing agent stream injects stove with the axial velocity of 10-50m/s, and the typical axial velocity of flow in fuel is not more than 6m/s simultaneously.Secondary oxidant stream has the speed of about 20m/s usually.When Part II primary oxidizing agent (namely around the annular stream of the primary oxidizing agent of flow in fuel) has the speed being not more than 6m/s usually, if whirlpool be used for this oxidant injection, then its speed can be with 10m/s as many.
Burner block comprises the multiple holes being formed in the primary oxidizing agent path that front occurs.It also comprises multiple holes of the fuel passage that multiple formation occurs in front similarly.As mentioned above, flow in fuel is injected from the nozzle (such as metallic nozzle) extending through burner block the hole forming fuel passage.Also described above, nozzle arranges to allow annular space by size, and each in described annular space is limited with the inner surface of the respective aperture forming fuel passage by the outer surface of respective nozzle.Burner block also comprises the hole that at least one forms secondary oxidant path.
Usually, the hole forming fuel passage extends through burner block from the back side to front always.Granular fuel and transmission gas feed fuel nozzle from manifold, and described manifold is divided into multiply stream by by the gas fluidized single particle flow in fuel of transmission.Usual manifold is in the upstream of burner block.Single stream is formed by the infeed of transmission gas being had in the fuel dispenser of the hopper comprising granular fuel.Adjust and construct fuel dispenser to produce the granular fuel stream gas fluidized by transmission flowing to manifold.This kind of granular fuel dispenser is well known in the art.As selection, manifold can be adjacent to place or be even positioned at burner block with the burner block back side.
Usually, the hole forming primary oxidizing agent path and secondary oxidant path also extends through burner block from the back side to front always.Oxidant (defining above) feeds primary oxidizing agent path and secondary oxidant from oxidant material source via oxidant manifold.Manifold is placed in the burner block back side usually, but even can be placed in burner block itself.
Burner block can have the fuel passage (and fuel nozzle) of any number, and condition has at least two, and each occurs in burner block front in same horizontal plane.Burner block can have the primary oxidizing agent path (and fuel nozzle) of any number similarly, and condition has at least two, and each occurs in burner block front in same horizontal plane.When burner block can have only single secondary oxidant passage time, if it comprises two or more, then their each comfortable same horizontal plane occur in the front of burner block.Those skilled in the art recognize that " same horizontal plane " means the phase co-altitude that described path rises in usual spontaneous combustion body of heater bottom surface and occur in burner block front.
With regard to describing above, primary oxidizing agent path, fuel passage and secondary oxidant path staggered make when one rises from burner block bottom surface to end face, and path is not with identical vertical plane orientation.Usually, burner block comprises two fuel passage (having two fuel nozzles), three primary oxidizing agent paths and two secondary oxidant paths.As selection, burner block can have four fuel passage (having four fuel nozzles), three primary oxidizing agent paths and two secondary oxidant paths.
When flat flame is parallel to the molten bath orientation of glass or metal in industry furnace, it is provided in the radiation heating on relative broad surface area.
Following steps describe the typical operation of flat-flame burner.Start the stream of primary oxidizing agent and fuel.Flame catches fire by using auxiliary thermal source, as one or more neat gas burner, furnace interior is heated to the autoignition temperature of granular fuel.When initial flame is set up, all the other oxidants feed the burning being completely used for downstream, fire area as secondary oxidant stream.
With reference now to figure, some aspect of the present invention is described.
As set forth best in Fig. 1, burner block 2 comprises two fuel channels 1A, 1B, three primary oxidizing agent paths 3A, 3B, 3C, and two secondary oxidant paths 5A, 5B.The burner block of Fig. 2 is similar to Fig. 1, and difference is replacement two fuel passage 1A, 1B, and it comprises four fuel passage 1A, 1B, 1C, 1D now.
As shown best in Fig. 3, multiply flow in fuel 4 is injected from burner block above multiply high speed primary oxidizing agent stream 6.Fuel and primary oxidizing agent burn in the first combustion zone 7.One or more strands of secondary oxidant stream 8 injects downwards along axle IA with the angle θ relative to horizontal HA.Secondary oxidant is burnt in the second combustion zone 9 with the imperfect combustion product from the first combustion zone 7.
As set forth best in Fig. 4, it is inner that flow in fuel 11 flows into fuel nozzle 13.The annular stream 15 of Part II primary oxidizing agent flows in the annular space limited by the inner surface of the outer surface of fuel nozzle 13 and fuel passage 17.At flow in fuel 11 and annular stream 15 from before stove is injected in the front of burner block 2, the premixed slightly in recess 19 by fuel and Part II primary oxidizing agent.The fuel passage 17 of Fig. 5 is similar to Fig. 4, and difference is its transition 21 outward taper between the downstream and the front of burner block 2 of fuel nozzle 13.
Describe for putting into practice the preferred method of the present invention and equipment.Technical staff is to be understood that and easily learns the many changes and improvements can making above-mentioned embodiment without departing from the spirit and scope of the present invention.Be only illustrative above and other embodiment of integrated processes and equipment can be used and do not depart from following claims the true scope of the present invention defined.
Claims (16)
1. use solid fuel in industry furnace, produce the method for flat flame, it comprises the steps: that the phase co-altitude using Part I primary oxidizing agent rises as two strands or more stock high speed primary oxidizing agent streams in spontaneous combustion body of heater bottom surface injects stove from burner block front;
The phase co-altitude risen in spontaneous combustion body of heater bottom surface above high speed primary oxidizing agent stream by least two strands of granular fuel streams injects stove from burner block front, and granular fuel stream comprises with transmitting gas fluidized solid fuel particle;
Part II primary oxidizing agent is injected stove with the form of two strands or more crural ring shape streams, per share annular stream around corresponding flow in fuel described in one, wherein:
Described burner block has at least two fuel channels, and described at least two strands of granular fuel streams inject stove from described passage;
Described fuel channel have separately extend through it fuel nozzle to limit the annular channels between the inner surface of fuel channel and the outer surface of fuel nozzle;
Described Part II primary oxidizing agent is injected stove from annular channels; With
The point of fuel nozzle in upstream, burner block front stops, and makes each flow in fuel flow out the end of associated fuel nozzle and mix with Part II primary oxidizing agent in fuel passage before injection stove;
Described first and second part primary oxidizing agents and described flow in fuel is made to burn to produce flat flame and imperfect combustion product in the first combustion zone in stove;
Secondary oxidant injects stove from burner block front as at least one secondary oxidant stream above the injection of described flow in fuel; With
Described secondary oxidant and described imperfect combustion product are burnt in the second combustion zone.
2. method according to claim 1, wherein said secondary oxidant stream to inject under the angle of flat flame.
3., according to the method for claim 1 or 2, wherein said high speed primary oxidizing agent stream injects stove with the axial velocity of 10-50m/s.
4. method as claimed in one of claims 1-3, wherein said at least two bursts of flow in fuel inject stove with the axial velocity being not more than 6m/s.
5. method as claimed in one of claims 1-4, wherein said Part II primary oxidizing agent injects stove with whirlpool.
6. method as claimed in one of claims 1-5, wherein said Part II primary oxidizing agent comprises the 5-10% being injected the oxidant total amount of stove by described first and second part primary oxidizing agents and described secondary oxidant stream.
7. method as claimed in one of claims 1-6, wherein said flow in fuel injects stove with whirlpool.
8. method as claimed in one of claims 1-7, wherein said high speed primary oxidizing agent stream injects stove with whirlpool separately.
9. method as claimed in one of claims 1-8, wherein said transmission gas is selected from air, CO
2and flue gas.
10. method as claimed in one of claims 1-9, wherein said at least two strands of granular fuel streams comprise two strands of granular fuel streams.
11. methods as claimed in one of claims 1-10, wherein said at least two strands of granular fuel streams comprise four strands of granular fuel streams.
12. methods any one of claim 1-11, wherein said at least two strands of high speed primary oxidizing agent streams comprise two strands of primary oxidizing agent streams.
13. methods any one of claim 1-12, wherein said at least one secondary oxidant stream comprises two strands of secondary oxidant streams.
14. methods any one of claim 1-13, it comprises the steps: transmission gas to feed to have in the fuel dispenser of the hopper comprising granular fuel further, adjust and construct fuel dispenser to produce towards the granular fuel stream gas fluidized by transmission of burner block, wherein be divided at least two strands of granular fuels from fuel dispenser towards the granular fuel of burner block and transmission gas flow and transmit gas flow, it comprises the described at least two strands of granular fuel streams injecting stove.
15. methods according to claim 14, the point of stream in burner block upstream wherein from dispenser separates.
16. methods according to claim 14, the stream wherein from dispenser separates in burner block inside.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2011/084988 WO2013097165A1 (en) | 2011-12-30 | 2011-12-30 | Process for producing flat flame by oxy-solid fuel burner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104285100A true CN104285100A (en) | 2015-01-14 |
| CN104285100B CN104285100B (en) | 2016-03-30 |
Family
ID=48696240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201180076301.7A Active CN104285100B (en) | 2011-12-30 | 2011-12-30 | By producing the method for flat flame containing oxygen solid fuel burner |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN104285100B (en) |
| WO (1) | WO2013097165A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106568079A (en) * | 2015-08-13 | 2017-04-19 | 通用电器技术有限公司 | System and method for providing combustion in a boiler |
| CN107191934A (en) * | 2017-07-31 | 2017-09-22 | 重庆赛迪热工环保工程技术有限公司 | A kind of non-premix burner nozzle |
| CN108700287A (en) * | 2015-12-30 | 2018-10-23 | 乔治洛德方法研究和开发液化空气有限公司 | Method and its injector for spraying fluid forces type particulate-solid fuel and oxidant |
| WO2021136218A1 (en) * | 2019-12-31 | 2021-07-08 | 乔治洛德方法研究和开发液化空气有限公司 | Combustor for fuel combustion and combustion method therefor |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9513002B2 (en) | 2013-04-12 | 2016-12-06 | Air Products And Chemicals, Inc. | Wide-flame, oxy-solid fuel burner |
| US9709269B2 (en) | 2014-01-07 | 2017-07-18 | Air Products And Chemicals, Inc. | Solid fuel burner |
| JP6121024B1 (en) * | 2016-04-22 | 2017-04-26 | 大阪瓦斯株式会社 | Combustion apparatus for melting furnace and melting furnace provided with the same |
| ES2894624T3 (en) * | 2018-12-21 | 2022-02-15 | Air Liquide | Assembly and procedure for the injection of a gaseous combustion agent |
| ES2896929T3 (en) | 2019-03-26 | 2022-02-28 | Air Liquide | Combustion procedure, and burner for its implementation |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5554022A (en) * | 1994-10-14 | 1996-09-10 | Xothermic, Inc. | Burner apparatus and method |
| WO2002081967A1 (en) * | 2001-04-06 | 2002-10-17 | L'air Liquide Societe Anonyme A Directoire Et Conseil De Surveillance Pour L'etude Et L'exploitation Des Procedes Georges Claude | Combustion method comprising separate injections of fuel and oxidant and burner assembly therefor |
| US20030054301A1 (en) * | 2001-09-17 | 2003-03-20 | Borders Harley A. | Oxygen-fuel burner with adjustable flame characteristics |
| US6684796B1 (en) * | 1997-04-25 | 2004-02-03 | The Boc Group, Plc | Particulate injection burner |
| FR2889579B1 (en) * | 2005-08-03 | 2007-09-14 | Air Liquide | METHOD FOR CALCINING A MATERIAL WITH LOW NOX EMISSION |
| EP2202460A2 (en) * | 2008-12-24 | 2010-06-30 | Messer Austria GmbH | Flat flame burner and method for operating same |
| WO2010144858A2 (en) * | 2009-06-12 | 2010-12-16 | Air Products And Chemicals, Inc. | Furnace and process for controlling the oxidative state of molten materials |
| CN102138040A (en) * | 2008-08-29 | 2011-07-27 | 乔治洛德方法研究和开发液化空气有限公司 | Method for generating combustion by means of a burner assembly and burner assembly therefor |
-
2011
- 2011-12-30 CN CN201180076301.7A patent/CN104285100B/en active Active
- 2011-12-30 WO PCT/CN2011/084988 patent/WO2013097165A1/en active Application Filing
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5554022A (en) * | 1994-10-14 | 1996-09-10 | Xothermic, Inc. | Burner apparatus and method |
| US6684796B1 (en) * | 1997-04-25 | 2004-02-03 | The Boc Group, Plc | Particulate injection burner |
| WO2002081967A1 (en) * | 2001-04-06 | 2002-10-17 | L'air Liquide Societe Anonyme A Directoire Et Conseil De Surveillance Pour L'etude Et L'exploitation Des Procedes Georges Claude | Combustion method comprising separate injections of fuel and oxidant and burner assembly therefor |
| US20030054301A1 (en) * | 2001-09-17 | 2003-03-20 | Borders Harley A. | Oxygen-fuel burner with adjustable flame characteristics |
| FR2889579B1 (en) * | 2005-08-03 | 2007-09-14 | Air Liquide | METHOD FOR CALCINING A MATERIAL WITH LOW NOX EMISSION |
| CN102138040A (en) * | 2008-08-29 | 2011-07-27 | 乔治洛德方法研究和开发液化空气有限公司 | Method for generating combustion by means of a burner assembly and burner assembly therefor |
| EP2202460A2 (en) * | 2008-12-24 | 2010-06-30 | Messer Austria GmbH | Flat flame burner and method for operating same |
| WO2010144858A2 (en) * | 2009-06-12 | 2010-12-16 | Air Products And Chemicals, Inc. | Furnace and process for controlling the oxidative state of molten materials |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106568079A (en) * | 2015-08-13 | 2017-04-19 | 通用电器技术有限公司 | System and method for providing combustion in a boiler |
| CN106568079B (en) * | 2015-08-13 | 2020-10-23 | 通用电器技术有限公司 | System and method for providing combustion in a boiler |
| US10955131B2 (en) | 2015-08-13 | 2021-03-23 | General Electric Technology Gmbh | System and method for providing combustion in a boiler |
| CN108700287A (en) * | 2015-12-30 | 2018-10-23 | 乔治洛德方法研究和开发液化空气有限公司 | Method and its injector for spraying fluid forces type particulate-solid fuel and oxidant |
| CN108700287B (en) * | 2015-12-30 | 2020-01-14 | 乔治洛德方法研究和开发液化空气有限公司 | Method for injecting particulate solid fuel and oxidant and injector therefor |
| CN107191934A (en) * | 2017-07-31 | 2017-09-22 | 重庆赛迪热工环保工程技术有限公司 | A kind of non-premix burner nozzle |
| CN107191934B (en) * | 2017-07-31 | 2023-11-03 | 重庆赛迪热工环保工程技术有限公司 | Non-premixed burner |
| WO2021136218A1 (en) * | 2019-12-31 | 2021-07-08 | 乔治洛德方法研究和开发液化空气有限公司 | Combustor for fuel combustion and combustion method therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104285100B (en) | 2016-03-30 |
| WO2013097165A1 (en) | 2013-07-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104285100B (en) | By producing the method for flat flame containing oxygen solid fuel burner | |
| US9285113B2 (en) | Distributed combustion process and burner | |
| KR101366032B1 (en) | FUEL INJECTOR FOR LOW ＮＯｘ FURNACE | |
| US7717701B2 (en) | Pulverized solid fuel burner | |
| US6699031B2 (en) | NOx reduction in combustion with concentrated coal streams and oxygen injection | |
| EP1504219B1 (en) | Combustion with reduced carbon in the ash | |
| CN102597629B (en) | Method of combusting particulate solid fuel with a burner | |
| US20120129111A1 (en) | Premix for non-gaseous fuel delivery | |
| JP5074094B2 (en) | Burner for producing inorganic spheroidized particles | |
| US8827691B2 (en) | Distributed combustion process and burner | |
| JP2010270990A (en) | Fuel burner and turning combustion boiler | |
| KR101726344B1 (en) | Combustor supplying multi fuel | |
| US20140182491A1 (en) | Biomass combustion | |
| WO2021060028A1 (en) | Inorganic spheroidized particle production burner, inorganic spheroidized particle production device, and inorganic spheroidized particle production method | |
| JP2023504084A (en) | Combustor for fuel combustion and its combustion method | |
| CN108700287B (en) | Method for injecting particulate solid fuel and oxidant and injector therefor | |
| KR20170042499A (en) | Flameless oxidation device, apparatus and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |