CN101024859B - Ball-shape top-burning type hot-air furnace with annular-arranged vertical up-spray burner - Google Patents
Ball-shape top-burning type hot-air furnace with annular-arranged vertical up-spray burner Download PDFInfo
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- CN101024859B CN101024859B CN200710053992A CN200710053992A CN101024859B CN 101024859 B CN101024859 B CN 101024859B CN 200710053992 A CN200710053992 A CN 200710053992A CN 200710053992 A CN200710053992 A CN 200710053992A CN 101024859 B CN101024859 B CN 101024859B
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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
Abstract
The invention relates to a spherical top combustion hot air furnace with annularly distributed and vertically upward-jetting burner, and its structure: the lower part of the furnace body is equipped with flue hole, furnace bottom and furnace grate, a heat storage room is in the furnace body, there is a burner between the upper part of the furnace body and the furnace top, the furnace top is made with hot air outlet, there is coal gas preheating loop in the wall body of the burner, there is combustion supporting air preheating loop in swelling body at the upper part of the coal gas preheating loop, there are coal gas outlet and top nozzle at the upper part of the coal gas preheating loop, the wall body of the burner is equipped with coal gas inlet connected with the coal gas preheating loop, the wall body of the burner at the upper part of the coal gas inlet is equipped with combustion supporting air preheating loop connected with combustion supporting air inlet and outlet, the upper part of the air outlet is equipped with air nozzle. And the invention has a special and novel structure, and skillfully solves the key problems in the gas-flow mixing, gas-flow distribution, fume preheating and other combustion courses and has huge economic and social benefits.
Description
One, technical field
The present invention relates to combustion unit, be meant a kind of globe-roof burning type hot-air furnace that is circular layout and vertically upward sprays burner that has especially.
Two, background technology
Hotblast stove is the important utility appliance of blast furnace ironmaking engineering, it is the device of a kind of heating at intermittence and refrigerative cycling service, the quality of its performance directly has influence on the normal operation of self and blast furnace, service efficiency and work-ing life, in hotblast stove, use maximum structure formation nothing more than internal combustion type at present, 3 kinds of external combustion type and top ignitions, because it is big that top combustion stove has intensity of combustion, flame is apart from weak point, advantages such as structure is simple relatively, obtained significant progress in recent years, be widely applied in the hot blast feeding of blast furnace, but, the place that much is worth carrying out technological innovation and research and development is still arranged from technology maturity analysis.Existing top combustion stove is provided with the top settling chamber, adopt coal gas to enter and enter combustion chambers burn after eddy flow mixes therein with tangential introduction of air, because existing, eddy flow make the middle part, combustion chamber that big Modelling of Flow with Recirculation be arranged, make the air-flow radial distribution extremely inhomogeneous, greatly influence combustion processes, cause flue gas stream can not have even velocity and temperature distribution, thereby influence whole furnace heat transfer effect.If adopt the hybrid mode of irrotational flow, can occur mixing not good again and problem flame instability.In addition, because settling chamber is to be in different temperature ranges in combustion processes and air-supply process, there is bigger alternating thermal stress; And be placed on the high temperature vault, be easy to occur structural issue.Improve to some extent though application number is 200520096217.3 top combustion stove, but still exist many unsatisfactory parts.Therefore, carrying out bigger texture improvement is an imperative job.
Three, summary of the invention
At above-mentioned situation, the present invention's purpose just provides a kind of new globe-roof burning type hot-air furnace that is circular layout and vertically upward sprays burner that has, can effectively solve and overcome existing top combustion stove combustion gas flowing temperature and velocity distribution inequality, problems such as whole heat-transfer effect difference and unreasonable structure, the technical scheme of its solution is to include stove (arch) top, the combustion chamber, ceramic burner and body of heater, floss hole and furnace bottom are arranged at the body of heater bottom, by in the body of heater on floss hole top fire grate is housed, in the body of heater is regenerator, between upper of furnace body and the furnace roof ceramic burner is arranged, and place the bottom of combustion chamber, hot-blast outlet is arranged on the furnace roof, vertical gas preheating circuit is arranged in the body of wall of ceramic burner, vertical combustion air preheating circuit is arranged in its upper expansion body, the spout at vertical gas exit and top thereof is arranged at vertical gas preheating circuit top, the gas entry that is communicated with vertical gas preheating circuit is arranged on the ceramic burner body of wall, have vertical combustion air preheating circuit to be connected with combustion air inlet and combustion air outlet on the ceramic burner body of wall on gas entry top, air jet is arranged at air top.Structure of the present invention is unique and novel, solve effectively and dexterously that air-flow mixes, air-flow distributes, with the key issue of combustion processes such as smoke pre-heating, realize flame stabilization, improved intensity of combustion, improve heat-transfer effect, reach and improve Load Regulation function etc., and then fuel saving, saving investment, reduction spent air temperture and quantity discharged, effectively prolong the work-ing life of hotblast stove, its economic and social benefit is huge.
Four, description of drawings
Fig. 1 is a structural profile front view of the present invention.
Fig. 2 is a ceramic burner structural profile front view of the present invention.
Fig. 3 is an A-A cross sectional plan view in the ceramic burner structural profile front view of the present invention.
Fig. 4 is a fluid velocity distribution plan of the present invention.
Fig. 5 is the fluid velocity distribution plan of existing ceramic hot-blast furnace (application number 200520096217.3).
Five, embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is elaborated.
By Fig. 1, shown in Figure 2, the present invention includes furnace roof 12, combustion chamber 11, ceramic burner 8 and body of heater 2, floss hole 3 and furnace bottom 1 are arranged at body of heater 2 bottoms, by in the body of heater on floss hole top grate 6 is housed, in the body of heater is regenerator 7, ceramic burner 8 is arranged between upper of furnace body and the furnace roof, and place the bottom of combustion chamber 11, hot-blast outlet 9 is arranged on the furnace roof 12, ceramic burner 8 is that vertical gas preheating circuit 14 is arranged in the burner body of wall 15, vertical combustion air preheating circuit 17 is arranged in its upper expansion body, the spout 20 at vertical gas exit 21 and top thereof is arranged at vertical gas preheating circuit top, the gas entry 13 that is communicated with vertical gas preheating circuit is arranged on the ceramic burner body of wall, have vertical combustion air preheating circuit 17 to be connected with combustion air inlet 16 and combustion air outlet 18 on the ceramic burner body of wall on gas entry top, air jet 19 is arranged at air top.For easy to maintenance and assurance result of use, top equipment manhole 10 is arranged on the furnace roof 12, equipment manhole 4 is arranged at body of heater 2 bottoms, is used to into people's maintenance, observation etc., and refractory masses 5 is arranged in the body of heater 2.
The inlet of the vertical gas preheating circuit 14 of said ceramic burner and combustion-supporting chamber's preheating of air circuit 17 is the tangential access port; The air jet 19 of ceramic burner and gas port 20 are for vertically upward, its nozzle is rectangle or circle, coal gas, the air of ejection carry out high temperature preheating through high temperature reflux to coal gas and air before mixing, improve temperature of combustion, furnace roof 12 adopts the catenary vault, ceramic burner places the base portion of vault, is supported on body of heater 2 and the ceramic burner body of wall 15.Be on vertical gas preheating circuit and the vertical preheating of air circuit to intersect and be provided with a plurality of outlets (collection) pipe.
By as can be seen above-mentioned, the present invention has been owing to adopted vertical coal gas and air-breathing circuit, and is subjected to the preheating of flue gas of turning back, thereby improves combustion conditions, improves intensity of combustion, and the uniform distribution of its hot gas flow of turning back can effectively improve the utilising efficiency of heat storage.Burner flow field feature has obtained fully proving that test entrusts the expert of energy institute of the Central China University of Science and Technology to carry out through cold test, its result is by Fig. 4, shown in Figure 5.Fig. 4 is the present invention's back hot gas flow distribution situation of burning, and Fig. 5 be the patent No. 200520096217.3 and similar hotblast stove hot gas flow distribution situation.By obviously finding out among two figure, hot-fluid presents the uniform distribution feature of Turbulence Flow in the pipe in the hotblast stove of the present invention, be beneficial to very much heating to the bottom heat storage, and existing hotblast stove is quite different, in the middle of hot gas flow distributes and to be low (even reversed flow) and the high flow performance in both sides causes the heat storage middle part to can not get abundant heating.
The present invention obviously is different from the characteristics of existing ceramic burner:
1, coal gas, air vertically upward spray, and by means of high temperature gases recirculating it are carried out high temperature preheating in hot-blast stove, and the staggered injection of warp mixes cmpletely it and burns, and reaches sufficient combustion, ignition temperature height, the purpose that the heat load adjustment scope is big;
2, coal gas, air vertically upward spray afterfire, turn back under the effect of hotblast stove vault, the downward hot gas flow that formation temperature and speed all are evenly distributed then enters the top of hotblast stove heat storage, thereby heat storage is heated evenly, can reaches the high and stable requirement of hot blast of hot blast temperature;
3, the inlet pipe of coal gas circuit and air circuit is tangential the access, makes to arrange evenly that separately staggered tens outlets (collection) Guan Zhongneng obtains mean error less than ± 5% velocity distribution, mixes thereby improve circumferential air-flow, improves the integral combustion effect;
4, adopt the catenary vault, force structure is good, and vault is little, long service life;
5, burner is arranged on the base portion of vault, is supported on the furnace shell and big-wall, and is not subjected to the combustion chamber heat radiation effect can keep less temperature variation, effectively increases the service life;
6, supporting seat and arch angular distance are far away, and thermal-flame can't move down, and make this supporting seat temperature be in normal tolerance range;
7, because the present invention has realized overall uniform burning and heat transfer process, the heat storage of the used hotblast stove of the comparable co-content blast furnace of the height of its heat storage can reduce by 20%, has saved investment effectively.
In a word, the present invention is the inventive improvements to existing top combustion stove structure, makes each functional structure feature and the layout science that becomes more be convenient to more promote the use of with reasonable, contains huge economic and social benefit.
Claims (5)
1. globe-roof burning type hot-air furnace that has the vertical up-spray burner that is circular layout, include furnace roof (12), combustion chamber (11), ceramic burner (8) and body of heater (2), it is characterized in that, floss hole (3) and furnace bottom (1) are arranged at body of heater (2) bottom, by in the body of heater on floss hole top grate (6) is housed, in the body of heater is regenerator (7), ceramic burner (8) is arranged between upper of furnace body and the furnace roof, and place the bottom of combustion chamber (11), hot-blast outlet (9) is arranged on the furnace roof (12), ceramic burner (8) is that vertical gas preheating circuit (14) is arranged in the burner body of wall (15), vertical combustion air preheating circuit (17) is arranged in its upper expansion body, the gas port (20) at vertical gas exit (21) and top thereof is arranged at vertical gas preheating circuit top, the gas entry (13) that is communicated with vertical gas preheating circuit is arranged on the ceramic burner body of wall, there is vertical combustion air preheating circuit (17) to be connected on the ceramic burner body of wall on gas entry top with combustion air inlet (16) and combustion air outlet (18), air jet (19) is arranged at air top, air jet (19) and gas port (20) are intersection and are provided with a plurality of outlet pipes vertically upward on vertical gas preheating circuit and the vertical preheating of air circuit.
2. the globe-roof burning type hot-air furnace that has the vertical up-spray burner that is circular layout according to claim 1, it is characterized in that, top equipment manhole (10) is arranged on the said furnace roof (12), and equipment manhole (4) is arranged at body of heater (2) bottom, and refractory masses (5) is arranged in the body of heater (2).
3. the globe-roof burning type hot-air furnace that has the vertical up-spray burner that is circular layout according to claim 1, it is characterized in that the inlet of the vertical gas preheating circuit of said ceramic burner (14) and combustion-supporting chamber's preheating of air circuit (17) is the tangent-type import.
4. the globe-roof burning type hot-air furnace that has the vertical up-spray burner that is circular layout according to claim 1 is characterized in that, the nozzle of air jet of said ceramic burner (19) and gas port (20) is rectangle or circle.
5. the globe-roof burning type hot-air furnace that has the vertical up-spray burner that is circular layout according to claim 1, it is characterized in that, said furnace roof (12) adopts the catenary vault, and ceramic burner places the base portion of vault, is supported on body of heater (2) and the ceramic burner body of wall (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710053992A CN101024859B (en) | 2007-04-25 | 2007-04-25 | Ball-shape top-burning type hot-air furnace with annular-arranged vertical up-spray burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710053992A CN101024859B (en) | 2007-04-25 | 2007-04-25 | Ball-shape top-burning type hot-air furnace with annular-arranged vertical up-spray burner |
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| Publication Number | Publication Date |
|---|---|
| CN101024859A CN101024859A (en) | 2007-08-29 |
| CN101024859B true CN101024859B (en) | 2010-05-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200710053992A Ceased CN101024859B (en) | 2007-04-25 | 2007-04-25 | Ball-shape top-burning type hot-air furnace with annular-arranged vertical up-spray burner |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101644481B (en) * | 2008-08-07 | 2011-05-11 | 中冶赛迪工程技术股份有限公司 | Top-fired air heating furnace |
| CN101957000B (en) * | 2009-07-19 | 2012-04-18 | 迅达科技集团股份有限公司 | Secondary air distributor for biomass direct combustion furnace |
| CN102483232B (en) * | 2009-09-04 | 2015-04-15 | Bsh博世和西门子家用电器有限公司 | Gas-burner arrangement and gas cooking point |
| CN101865467B (en) * | 2010-06-12 | 2011-09-21 | 郑州豫兴耐火材料有限公司 | Spiral flow up jet premix and preheat burner with circuit and porous regenerator |
| CN102051425B (en) * | 2011-01-13 | 2012-09-26 | 河南省豫兴热风炉工程技术有限公司 | High-wind-temperature hot blast heater with automatic air preheater |
| CN102304596B (en) * | 2011-09-16 | 2012-12-26 | 陈维汉 | Flow-equalizing and combustion-supporting hot blast furnace with multihole combustion-stabilizing nozzle and heat accumulators |
| CN111690785A (en) * | 2019-03-11 | 2020-09-22 | 山东省冶金设计院股份有限公司 | Top combustion hot blast stove with central uniform distribution type burner |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5292246A (en) * | 1988-05-02 | 1994-03-08 | Institut Francais Du Petrole | Burner for the manufacture of synthetic gas comprising a solid element with holes |
| CN2748470Y (en) * | 2004-09-17 | 2005-12-28 | 广西钢铁设计院 | High-efficiency energy-saving high-blast-temperature large-scale ball type hot blast stove |
| CN201032343Y (en) * | 2007-02-14 | 2008-03-05 | 郑州豫兴耐火材料有限公司 | Spherical top burning hot-blast stove with ring disposal vertical upward spraying combustor |
-
2007
- 2007-04-25 CN CN200710053992A patent/CN101024859B/en not_active Ceased
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5292246A (en) * | 1988-05-02 | 1994-03-08 | Institut Francais Du Petrole | Burner for the manufacture of synthetic gas comprising a solid element with holes |
| CN2748470Y (en) * | 2004-09-17 | 2005-12-28 | 广西钢铁设计院 | High-efficiency energy-saving high-blast-temperature large-scale ball type hot blast stove |
| CN201032343Y (en) * | 2007-02-14 | 2008-03-05 | 郑州豫兴耐火材料有限公司 | Spherical top burning hot-blast stove with ring disposal vertical upward spraying combustor |
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| CN101024859A (en) | 2007-08-29 |
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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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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. |
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| IW01 | Full invalidation of patent right |
Decision date of declaring invalidation: 20181024 Decision number of declaring invalidation: 37481 Granted publication date: 20100519 |
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| IW01 | Full invalidation of patent right |