CN101382286B - Air flow circle alternating and equalization injection combustor for stabilizing flame by pre-mixing - Google Patents
Air flow circle alternating and equalization injection combustor for stabilizing flame by pre-mixing Download PDFInfo
- Publication number
- CN101382286B CN101382286B CN2008102305865A CN200810230586A CN101382286B CN 101382286 B CN101382286 B CN 101382286B CN 2008102305865 A CN2008102305865 A CN 2008102305865A CN 200810230586 A CN200810230586 A CN 200810230586A CN 101382286 B CN101382286 B CN 101382286B
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- air
- circuit
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- wall
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/48—Nozzles
- F23D14/58—Nozzles characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration
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- 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
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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)
Abstract
The invention relates to a burner with airflow annular interlaced even gas flow premixed injection and stable flame, can effectively solve the problems of bad mixing of coal gas and air, uneven airflow distribution and incomplete or unstable burning, and has following structure: a cylindrical body consists of an outer wall and an inner wall that moves upwards and downwards, the outer wall is arranged on an annular bearing plate, the inner wall and the outer wall are hermetically connected in a mazy way, an annular rectangular loop is arranged inside the outer wall and symmetrically separated into an upper chamber coal gas distributing loop and a lower chamber air distributing loop by an oblique partition wall, a coal gas inlet pipe and an air inlet pipe are respectively connected with an outer end of each distributing loop at a position of the largest cross section, a coal gas nozzle pipe and an air nozzle pipe are respectively led out from an upper inner side of the coal gas distributing loop and a lower inner side of the air distributing loop, an annular communicated premixing conduit is arranged above two nozzles, and a flow equalizing and blocking stopper is arranged on the annular communicated premixing conduit. The burner realizes the injection premixing of coal gas and air, backflow preheating and stable burning, and has enormous economical and social benefits.
Description
One, technical field
The present invention relates to the fuel combustion of Thermal Power Engineering Field and the dedicated devices of flowing heat transfer, the burner of the steady flame of premix is sprayed in the staggered current-sharing of a kind of air-flow annular, it can be used for blast funnace hot blast stove as ceramic burner, also can be as a kind of burner application on the industrial furnace of other industry heating.
Two, background technology
(the perhaps indispensable core apparatus of burner material combustion furnace kiln plant, whether good its performance and structure be directly has influence on fuel availability, the thermal efficiency of stove and whether satisfies energy conservation and environment protection burner.At present, widely used various burners do not have the powdered coal burner of burning solid powder, high pressure or the diffusion combustion of low-pressure nozzle burner and burning gases or the burner of premix (half premix) burning of combustion of liquid fuel outward.Various burners all have significant progress and innovation at different industry fields, its effect separately of performance in various fuel-fired furnaces.Finished from sleeve type burner for the burner that adopts diffusion combustion mode, progressively carry out the transition to the conversion of the rectangle burner of comb shape air nozzle, and develop into that the annular steady flame combustion technology of multiple nozzle spraying eddy flow mixing backflow preheat or annular multiinjector are staggered goes up the steady flame overheavy firing of air-flow turn-back pre-heating technology after the spray premixed combustion.Along with the development of combustion technology, the combustion intensity of low-heat value gas and the stability of flame are all greatly improved, coal gas and air preheat make that ignition temperature constantly increases, efficiency of combustion also progressively improves in the cooperation.But make a general survey of existing gas burner, especially use the burner of the blast furnace gas on hot-blast stove, owing to structure unreasonable cause coal gas to mix not good with air and (or) the air-flow skewness is that problems such as thing, incomplete combustion that causes therefrom or combustion instability, heat load adjustment poor performance usually take place.Also there is problem on the structure if add in burner and heat transfer-regenerative apparatus overall co-ordination, will causes hot-blast stove heat-transfer effect difference and the low phenomenon of heat storage utilization rate.Such hot-blast stove obviously can not satisfy blast furnace to the air quantity of hot blast and the requirement of wind-warm syndrome, let alone efficient, the energy-conservation and environmental protection of hot-blast stove, does not also accomplish the operation with security and stability under the high hot blast temperature.Therefore, improve the structure of burner, make its with heat transfer-regenerative apparatus between form and dispose the effective way that just becomes raising hot-blast stove performance rightly.
Three, summary of the invention
Based on above-mentioned situation, for overcoming the prior art defective, the present invention's purpose is exactly to propose the burner that the steady flame of premix is sprayed in the staggered current-sharing of a kind of air-flow annular, can effectively solve coal gas mixes not good with air, air-flow skewness and incomplete combustion or problem of unstable, the technical scheme of its solution is, include cylinder 8, coal gas distributes circuit 2a and air to distribute circuit 2b, cylinder 8 is made of exterior wall 1 and the interior wall 11 that moves up and down, exterior wall places on the supporting ring flat-plate 9, interior wall adopts labyrinth sealing to be connected 10 with exterior wall and links together, being provided with coaxial cross section in cylinder 8 exterior walls 1 is the ring-type rectangle circuit of rectangle, by inclination partition wall 2C the circuit symmetry is divided into two chambers up and down in the rectangle circuit, upper chamber is that coal gas distributes circuit 2a, lower chambers is that air distributes circuit 2b, two circuits all are the chamber circuit that progressively shrinks inside gas outlet, there are gas inlet pipe 6 and air intlet pipe 7 to insert respectively in the outer end, place, maximum cross-section of distributing circuit separately, distribute the upper inner of circuit and air to distribute the lower inside of circuit to draw jet for gas pipe 3a and the air nozzle pipe 3b that is interspersed along circumferential ring-type respectively at coal gas, two blast tubes are in the cylinder body wall and parallel with its axis, and number respectively is 20～40; Two kinds of blast tubes are drawn by the upper surface respectively in cylinder, form the jet for gas and the air nozzle of ring-type interlaced arrangement, jet for gas with have above the air nozzle be connected by interior wall and exterior wall top between annular premixed conduit 4 that constitute and coaxial with cylinder 8, be equipped with the current-sharing that faces air nozzle and the jet for gas-choked flow link stopper 5 of equilateral triangle on the annular premixed conduit 4.
When using said burner, coal gas and air enter separately distribution of air flow circuit from its inlet respectively, afterwards via separately blast tube enter annular premixed groove, enter the combustion space through current-sharing-choked flow link stopper and fire burns after this does preliminary mixing, burning back flue gas has two kinds of types of flow according to different chamber structures; If a. flow through, then, vault flows out the heat-exchange device (or regenerator) below entering from the central space of annular burner downward (relatively upwards) because of stopping to turn back through vault combustion chamber (being used for hot-blast stove); Can form a backflow vortex between mixed airflow that in this process, rises and the flue gas of the decline stream, down current under its effect can to around separately form and be similar to VELOCITY DISTRIBUTION mobile in the pipe and enter heat-exchange device, the high temperature reflux flue gas also can make the rising mixed airflow obtain preheating and the realization flame stabilization that catches fire in advance; The annular burner middle part sealing (being used for other industrial furnace) if b. directly enter the combustion chamber, then the burner middle part also can form the backflow vortex, its high-temperature flue gas can reach the preheating premixed flow and realize the purpose of flame stabilization, but the distribution of air-flow must be through just being evenly distributed behind the current equalizer; In addition, the progressively contraction of coal gas and air distribution channel can make the blast tube exit velocity be tending towards evenly, adds the effect of current-sharing-choked flow link stopper and makes and enter the combustion chamber air-flow more evenly and good mixing.Here it is, and this burner can form high-intensity combustion and the two mechanism of action uniformly of even velocity temperature.
In a word, this burner can realize smoothly that coal gas and air spray premix, backflow preheat, smooth combustion, mixes not good, air-flow skewness, low-heat value gas combustion instability, low, the not high key issue of ignition temperature of combustion intensity with air thereby efficiently solve coal gas.
Four, description of drawings
Fig. 1 is the whole sectional front view of burner of the present invention.
Fig. 2 is a burner vertical view of the present invention.
Fig. 3 is the different a of burner of the present invention, b flow field schematic diagram (wherein 12 is regenerator, and 13 are the backflow flow field, and 14 is furnace cavity).
Five, the specific embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is explained in detail.
By Fig. 1, Fig. 2 provides, the present invention in the specific implementation, the cylinder of burner is built into cylindrical shape by laying bricks or stones by refractory brick or heat-resisting cast iron, cylinder 8 is made of exterior wall 1 and the interior wall 11 that moves up and down, exterior wall places on the supporting ring flat-plate 9, interior wall adopts labyrinth sealing to be connected 10 with exterior wall and links together, constitute stable body structure, build the distribution rectangle circuit of the square-section of coal gas and air in it by laying bricks or stones, the rectangle circuit by inclination partition wall 2c every being set to two chambers (claiming cavity again), upper chamber is that coal gas distributes circuit 2a, draw along circumferential equally distributed jet for gas pipe 3a on its top, after drawing, upwards arrives at this pipe the ejiction opening of annular premixed conduit 4 bottoms, lower chambers is that air distributes circuit 2b, draw along circumferentially being evenly distributed with air nozzle pipe 3b its underpart, and this pipe is drawn the ejiction opening that annular premixed conduit 4 bottoms are upwards also arrived in the back; The ejiction opening of coal gas and air is the staggered ring-type that is arranged in; Annular premixed conduit 4 is built by laying bricks or stones by refractory material and is formed, and its bottom and blast tube communicate, and the current-sharing-choked flow link stopper 5 of triangular-section is then laid on top directly over nozzle exit; Coal gas and air distribution circuit (2a and 2b) separately is the structure that the distribution circuit of whole square-section is split to form by the inclination partition wall 2c that builds by laying bricks or stones by certain slope, they are progressively inside chambers of shrinking of gas outlet of symmetry, insert gas inlet pipe 6 and air intlet pipe 7 respectively in outer end, place, maximum cross-section separately.
Here be necessary to point out that the number of coal gas, air nozzle pipe (3a, 3b) is decided according to the thermic load size of burner and the diameter of burner, generally between 20～40 of each leisures; Coal gas, air nozzle pipe are that the bottom from annular premixed conduit 4 enters, and be different with the position of coal gas, air nozzle pipe by annular premixed conduit 4, and it enters angle and can be in relative axis changes in 0 °～30 ° the angular range; The angle of inclination of the hypotenuse of trapezoid cross section of corresponding annular premixed conduit 4 also has 0 °～30 ° angle to change scope; Number=jet for gas the pipe and the air nozzle pipe number of current-sharing-choked flow link stopper 5 that install on annular premixed conduit 4 tops, generally should be corresponding one by one, can be that the triangular-section also can be other shapes, its objective is the current-sharing effect of playing grid and the steady flame effect that refluxes dorsad, but its size just can not be too little in the time of on being applied to hot-blast stove, and its size just can be little when being used on the industrial furnace, and the link stopper number can also be more than blast tube.It is more even that the effect of block is to make gas to mix, and short flame combustion is even, effectively improves combustion intensity, and energy savings is effectively improved environmental aspect more than 35%, and reduce and pollute, be one of the invention point, be other burners are unexistent.
For burner is used for hot-blast stove, the vault combustion chamber of hot-blast stove should be placed on the top of burner, and the burner of having formed hot-blast stove together makes up, this device composite entity is placed on (hot-blast stove steel construction shell) supporting ring flat-plate 9, and with interior wall 11 between adopt labyrinth sealing to be connected 10, set up stable body structure with this, this is another characteristics of the present invention.
For burner is used for industrial furnace, burner should be installed on the combustion chamber furnace wall of industrial furnace, allow the nozzle end of burner towards the combustion chamber, and formed the burning zone of industrial furnace together.Be arranged in the number and the position of burning zone burner, and the size decide by the thermic load and the temperature requirement of industrial furnace, its fixing means can adopt various ways.But the structure of burner is immovable.
In a word, the present invention is with simple and rational structure, solved the burner jet-stream wind effectively and mixed not good, key issues such as burning is insufficient, combustion-gas flow speed temperature distributing disproportionation, as be used for that hot-blast stove just can guarantee effectively that hot-blast stove is efficient, high temperature, move safely and steadly; As be used for that industrial furnace can guarantee effectively also that thermal technology industry is efficient, samming, etc. calorific intensity and the operation of safety and stablization ground; Thereby can realize fuel saving, save investment, reduce the good economic and social benefit of EGT and discharge capacity, minimizing environmental pollution.
Claims (4)
1. the burner of the steady flame of premix is sprayed in the staggered current-sharing of air-flow annular, include cylinder (8), coal gas distributes circuit (2a) and air to distribute circuit (2b), it is characterized in that, cylinder (8) is made of exterior wall (1) and the interior wall (11) that moves up and down, exterior wall places on the supporting ring flat-plate (9), interior wall adopts labyrinth sealing to be connected (10) with exterior wall and links together, being provided with coaxial cross section in cylinder (8) exterior wall (1) is the ring-type rectangle circuit of rectangle, by inclination partition wall 2C the circuit symmetry is divided into two chambers up and down in the rectangle circuit, upper chamber is that coal gas distributes circuit (2a), lower chambers is that air distributes circuit (2b), two circuits all are the chamber circuit that progressively shrinks inside gas outlet, there are gas inlet pipe (6) and air intlet pipe (7) to insert respectively in the outer end, place, maximum cross-section of distributing circuit separately, distribute the upper inner of circuit and air to distribute the lower inside of circuit to draw jet for gas pipe (3a) and the air nozzle pipe (3b) that is interspersed along circumferential ring-type respectively at coal gas, jet for gas pipe (3a) and air nozzle pipe (3b) are in the cylinder body wall and parallel with its axis, and number respectively is 20～40; Jet for gas pipe (3a) and air nozzle pipe (3b) are drawn by the upper surface respectively in cylinder, form the jet for gas and the air nozzle of ring-type interlaced arrangement, jet for gas with have above the air nozzle be connected by interior wall and exterior wall top between annular premixed conduit (4) that constitute and coaxial with cylinder (8), be equipped with the current-sharing that faces air nozzle and the jet for gas-choked flow link stopper (5) of equilateral triangle on the annular premixed conduit (4).
2. the burner of the steady flame of premix is sprayed in the staggered current-sharing of air-flow annular according to claim 1, it is characterized in that, it is by being the structure that inclination partition wall (2c) that the gradient builds by laying bricks or stones the distribution circuit with whole square-section is split to form that said coal gas distributes circuit (2a) and air to distribute circuit (2b), they are progressively inside chambers of shrinking of gas outlet of symmetry, insert gas inlet pipe (6) and air intlet pipe (7) respectively in outer end, place, maximum cross-section separately.
3. the burner of the steady flame of premix is sprayed in the staggered current-sharing of air-flow annular according to claim 1, it is characterized in that, said coal gas, air nozzle pipe are that the bottom from annular premixed conduit (4) enters, it enters angle and is 0 °～30 ° in relative axis, and the angle of inclination of the hypotenuse of trapezoid cross section of corresponding annular premixed conduit (4) is 0 °～30 °.
4. the burner of the steady flame of premix is sprayed in the staggered current-sharing of air-flow annular according to claim 1, it is characterized in that the number=jet for gas pipe and the air nozzle pipe number of current-sharing-choked flow link stopper (5) that install on said annular premixed conduit (4) top.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102305865A CN101382286B (en) | 2008-10-27 | 2008-10-27 | Air flow circle alternating and equalization injection combustor for stabilizing flame by pre-mixing |
| BRPI0920829-1A BRPI0920829B1 (en) | 2008-10-27 | 2009-03-09 | COMBUSTOR |
| PCT/CN2009/070683 WO2010048796A1 (en) | 2008-10-27 | 2009-03-09 | Burner and its gas distribution loop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102305865A CN101382286B (en) | 2008-10-27 | 2008-10-27 | Air flow circle alternating and equalization injection combustor for stabilizing flame by pre-mixing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101382286A CN101382286A (en) | 2009-03-11 |
| CN101382286B true CN101382286B (en) | 2010-04-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008102305865A Active CN101382286B (en) | 2008-10-27 | 2008-10-27 | Air flow circle alternating and equalization injection combustor for stabilizing flame by pre-mixing |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN101382286B (en) |
| BR (1) | BRPI0920829B1 (en) |
| WO (1) | WO2010048796A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103398377A (en) * | 2013-08-22 | 2013-11-20 | 重庆紫光新科化工开发有限公司 | Tail gas burner and tail gas boiler as well as tail gas heat energy recovery method |
| CN105444171A (en) * | 2015-12-11 | 2016-03-30 | 陈维汉 | Top-combustion-adjustable cyclone type high-speed combusting device |
| CN109990285B (en) * | 2017-12-30 | 2024-01-16 | 宁波方太厨具有限公司 | Flame-stabilizing gas burner |
| CN116734246A (en) * | 2020-10-09 | 2023-09-12 | 黄强初 | Full premix burner |
| CN112902223B (en) * | 2021-04-19 | 2023-07-07 | 吉林聚能网控科技有限公司 | Special heating core for orifice plate turbulent flow type oilless pulverized coal igniter |
| CN112902224B (en) * | 2021-04-19 | 2023-07-07 | 吉林聚能网控科技有限公司 | Two-stage orifice plate turbulent flow type oil-free pulverized coal igniter |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2915875Y (en) * | 2006-06-29 | 2007-06-27 | 郑州豫兴耐火材料有限公司 | Annular body porous short flame combustor |
| CN101251257A (en) * | 2008-04-17 | 2008-08-27 | 郑州豫兴耐火材料有限公司 | Ceramic combustor with sloping-ladder-shaped circumferential ring upwards nozzle |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19718532C2 (en) * | 1997-05-02 | 2002-10-24 | Heinz Faustmann | Gas powered line burner |
-
2008
- 2008-10-27 CN CN2008102305865A patent/CN101382286B/en active Active
-
2009
- 2009-03-09 WO PCT/CN2009/070683 patent/WO2010048796A1/en active Application Filing
- 2009-03-09 BR BRPI0920829-1A patent/BRPI0920829B1/en not_active IP Right Cessation
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2915875Y (en) * | 2006-06-29 | 2007-06-27 | 郑州豫兴耐火材料有限公司 | Annular body porous short flame combustor |
| CN101251257A (en) * | 2008-04-17 | 2008-08-27 | 郑州豫兴耐火材料有限公司 | Ceramic combustor with sloping-ladder-shaped circumferential ring upwards nozzle |
Also Published As
| Publication number | Publication date |
|---|---|
| BRPI0920829A2 (en) | 2015-12-22 |
| CN101382286A (en) | 2009-03-11 |
| WO2010048796A1 (en) | 2010-05-06 |
| BRPI0920829B1 (en) | 2020-03-17 |
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| C14 | Grant of patent or utility model | ||
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Owner name: HENAN YUXING BLAST ENGINEERING TECHNOLOGY CO., LTD Free format text: FORMER OWNER: ZHENGZHOU YUXING REFRACTORY MATERIAL CO., LTD. Effective date: 20150515 |
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| C41 | Transfer of patent application or patent right or utility model | ||
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Effective date of registration: 20150515 Address after: No. 23, No. 226, Jinshui Road, Jinshui District, Henan, Zhengzhou, China, No. 2303 Patentee after: Henan Yuxing Hot Blast Stove Engineering Technology Co., Ltd. Address before: 452374 Yue Village, Yue Village, Xinmi, Henan Patentee before: Zhengzhou Yuxing Refractory Material Co., Ltd. |