CN102978316B - Top combustion stove capable of effectively preventing temperature of burner from excessively rising - Google Patents
Top combustion stove capable of effectively preventing temperature of burner from excessively rising Download PDFInfo
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- CN102978316B CN102978316B CN201210542854.3A CN201210542854A CN102978316B CN 102978316 B CN102978316 B CN 102978316B CN 201210542854 A CN201210542854 A CN 201210542854A CN 102978316 B CN102978316 B CN 102978316B
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Abstract
The invention discloses a top combustion stove capable of effectively preventing the temperature of a burner from excessively rising, and the top combustion stove comprises a stove body, a gas main pipe, an air inlet pipe and a hot air pipe, wherein the top combustion chamber of the stove body is internally provided with a burner; and the top combustion chamber is further provided with an assistant air supply pipeline, one end of the assistant air supply pipeline is communicated with the bottom of the burner of the top combustion chamber, and the other end of the assistant air supply pipeline is communicated with a gas pipeline and/or a nitrogen pipeline. According to the top combustion stove, after the mode of the assistant air supply pipeline is adopted, not only can the gas be supplied to the top combustion chamber when the stove burns, but also the low-temperature nitrogen can be transported into the combustion chamber when a hot blast heater supplies the air, so that the excessive rise of the temperature of the burner due to the high-temperature gas which enters into the bottom of the stove body can be avoided, and the temperature of the burner can be stabilized, therefore, the influence of the high-temperature difference effect on the service life of the burner can be avoided. The top combustion stove is simple in structure, reasonable to design, and simple and convenient to implement, the excessive rise of the temperature of the burner can be effectively avoided, the service life of the burner can be prolonged, the production cost can be reduced, and the economic benefit can be improved.
Description
Technical field
The invention belongs to boiler plant technical field, be specifically related to a kind of simple and reasonable, be easy to implement, the top combustion stove that can effectively prevent burner temperature from excessively raising.
Background technology
Top combustion stove is a kind of common boiler plant, gains the name because combustion chamber is arranged at top.Combustion chamber and regenerator are in together on central axis, and after can ensureing to burn, high-temperature flue gas evenly enters checker brick, improves the utilization ratio of regenerator.Top combustion stove is when burning stove, and burner temperature maintains about 500 DEG C usually; Proceed to the air-supply stage, the cold wind that bottom of furnace body enters is warming up to about 1280 DEG C through checker brick, and the heating duct risen near top combustion chamber is to blast furnace heat supply; High-temperature gas makes burner temperature heat up thereupon, reaches more than 900 DEG C very soon.But the refractory materials of burner is easily impaired in the huge temperature difference frequent variations of 500 DEG C ~ 900 DEG C, causes hotblast stove overhaul, has a strong impact on normal production.For this reason, develop a kind of advantages of simple, be easy to implement, the top combustion stove that can effectively prevent burner temperature from excessively raising is very important, and can produce huge economical effectiveness.
Summary of the invention
The object of the present invention is to provide a kind of simple and reasonable, be easy to implement, the top combustion stove that can effectively prevent burner temperature from excessively raising.
The object of the present invention is achieved like this, and comprise body of heater, coal gas supervisor, blast pipe, heating duct, the top combustion indoor of body of heater arrange burner; Described top combustion chamber is also provided with auxiliary feed line, and auxiliary feed line one end is communicated with the burner base of top combustion chamber, and the other end is communicated with gaspipe line and/or nitrogen supply air line.
The present invention adopts and arranges auxiliary feed line mode, both can when burning stove for top combustion chamber provides combustion gas, also can when hotblast stove be in air-supply, low temperature nitrogen is sent into combustion chamber, the high-temperature gas preventing bottom of furnace body from entering makes the excessive temperature of burner raise, the temperature of stabilizing burner, makes burner not reason high temperature difference effect and affect its work-ing life.Structure of the present invention is simple, reasonable in design, is easy to implement, can effectively prevents burner temperature from excessively raising, the work-ing life of prolonging combustion device, reduces production cost, increases economic efficiency.
Accompanying drawing explanation
Fig. 1 is integrality schematic front view of the present invention;
Fig. 2 be Fig. 1 partly cut open schematic diagram;
Fig. 3 be the A-A of Fig. 1 to cross-sectional schematic, the position relationship of main display circular line and air-supply duct, rest part omits;
In figure: 1-body of heater, 2-top combustion chamber, 3-burner, 4-coal gas is responsible for, 5-circular line, 6-air-supply duct, 7-inlet pipe, the combustion-supporting tracheae of 8-, 9-heating duct, 10-nitrogen sparge tube, 11-vacuum breaker, 12-stopping valve, 13-variable valve, 14-coal gas ring casing, 15-combustor, 16-exhanst gas outlet, 17-blast pipe.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further illustrated, but limited the present invention never in any form, and any conversion done based on training centre of the present invention or replacement, all belong to protection scope of the present invention.
As shown in Figure 1, 2, the present invention includes body of heater 1, coal gas supervisor 4, blast pipe 8, heating duct 9, in the top combustion chamber 2 of body of heater 1, burner 3 is set; Described top combustion chamber 2 is also provided with auxiliary feed line, and auxiliary feed line one end is communicated with bottom the burner 3 of top combustion chamber 2, and the other end is communicated with gaspipe line and/or nitrogen pipeline.
Described auxiliary feed line arranges looping pipeline 5 around top combustion chamber 2, and on it, uniform air-supply duct 6 is communicated with bottom the interior burner of top combustion chamber 23, and circular line 5 is communicated with gaspipe line by inlet pipe 7.
Described circular line 5 is at least arranged an air-supply duct 6, preferably 4 ~ 8 air-supply duct 6, to be burner 3 evenly air feed.
Described auxiliary feed line connects gaspipe line.To ensure, at burning heater stage, coal gas to be sent into combustion chamber 2 through auxiliary feed line, with combustion-supporting gas mixed firing, makes the temperature of burner 3 maintain about 500 DEG C.
Described gaspipe line is communicated with nitrogen sparge tube 10.So that after burning stove, auxiliary feed line is utilized to be communicated with nitrogen sparge tube 10, namely when hotblast stove is in ventilation state, auxiliary feed line is utilized to be imported by nitrogen in top combustion chamber 2, nitrogen dilution high-temperature gas, is combustion chamber cooling, makes the temperature-stable of burner 3 in about 500 DEG C.
Variable valve 13 is set between described gaspipe line and nitrogen sparge tube 10, to regulate nitrogen gas supply amount.
Stopping valve 12 is set between described gaspipe line and nitrogen sparge tube 10, is mixed into coal gas ring casing 14 to prevent nitrogen.Described gaspipe line and coal gas arrange vacuum breaker 11 between being responsible for 4, seal in coal gas supervisor 4 to prevent furnace high-temperature gas.
As shown in Figure 3, the angle between described air-supply duct 6 and circular line 5 is 45 ~ 90 °, and gas sprays into tangential way, forms eddy flow in top combustion chamber 2, makes burning more abundant.
Principle of work of the present invention and working process:
The present invention adopts and arranges auxiliary feed line mode, and one is when burning stove for top combustion chamber 2 provides combustion gas, aid burning, can improve heating intensity, Quick high combustor temperature; Two is can when hotblast stove is in air-supply, and send into low temperature nitrogen to combustion chamber, the high-temperature gas preventing bottom of furnace body from entering makes the excessive temperature of burner raise, the temperature of stabilizing burner 3, makes burner 3 not reason high temperature difference effect and affect its work-ing life.
Auxiliary feed line of the present invention is ring structure, is connected bottom burner 3 by uniform many air-supply duct 6.During hot blast stove burning, coal gas, combustion air enter combustor 15, coal gas ring casing 14, spray into mixed firing in stove by respective nozzle; Coal gas is passed into bottom burner 3 by air-supply duct 6 by auxiliary feed line, realizes stratified combustion, is formed " little torch ", to ensure that burner 3 can maintain about 500 DEG C.Enter the air-supply stage, coal gas, combustion air stop sending into, and the cold wind that hotblast stove bottom is sent into is heated to about 1280 DEG C through checker brick, discharge be fed to blast furnace use from the heating duct 9 of vault; Meanwhile, heat energy also can seal in top combustion chamber 2, and the temperature of burner 3 can be lifted to about 900 DEG C very soon.Damage in order to the not frequent excessively rising of the temperature maintaining burner 3, the present invention, after burning stove, utilizes auxiliary feed line to pass into nitrogen, utilizes low temperature nitrogen lower the temperature for burner 3 and maintain about 500 DEG C, contributes to protecting burner 3.
Claims (5)
1. the top combustion stove that can effectively prevent burner temperature from excessively raising, comprises body of heater (1), coal gas supervisor (4), blast pipe (8), heating duct (9), arranges burner (3) in the top combustion chamber (2) of body of heater (1); It is characterized in that: described top combustion chamber (2) is also provided with auxiliary feed line, auxiliary feed line one end is communicated with burner (3) bottom of top combustion chamber (2), and the other end is communicated with gaspipe line and nitrogen pipeline; Described auxiliary feed line arranges looping pipeline (5) around top combustion chamber (2), and on it, uniform air-supply duct (6) is communicated with burner (3) bottom in top combustion chamber (2), and circular line (5) is communicated with gaspipe line by inlet pipe (7); Described circular line (5) is arranged 4 ~ 8 air-supply duct (6); Described nitrogen pipeline is nitrogen sparge tube (10).
2. the top combustion stove that can effectively prevent burner temperature from excessively raising according to claim 1, is characterized in that: arrange variable valve (13) between described gaspipe line and nitrogen sparge tube (10).
3. the top combustion stove that can effectively prevent burner temperature from excessively raising according to claim 1, is characterized in that: arrange stopping valve (12) between described gaspipe line and nitrogen sparge tube (10).
4. the top combustion stove that can effectively prevent burner temperature from excessively raising according to claim 1, is characterized in that: described gaspipe line and coal gas are responsible between (4) and are arranged vacuum breaker (11).
5. the top combustion stove that can effectively prevent burner temperature from excessively raising according to claim 1, is characterized in that: the angle between described air-supply duct (6) and circular line (5) is 45 ~ 90 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210542854.3A CN102978316B (en) | 2012-12-15 | 2012-12-15 | Top combustion stove capable of effectively preventing temperature of burner from excessively rising |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210542854.3A CN102978316B (en) | 2012-12-15 | 2012-12-15 | Top combustion stove capable of effectively preventing temperature of burner from excessively rising |
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| Publication Number | Publication Date |
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| CN102978316A CN102978316A (en) | 2013-03-20 |
| CN102978316B true CN102978316B (en) | 2015-02-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210542854.3A Active CN102978316B (en) | 2012-12-15 | 2012-12-15 | Top combustion stove capable of effectively preventing temperature of burner from excessively rising |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105586461A (en) * | 2016-03-10 | 2016-05-18 | 山东钢铁股份有限公司 | Purging device and purging method for gas pipeline of hot blast stove |
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| CN1254761A (en) * | 1999-07-06 | 2000-05-31 | 周春林 | Cold-wind cooler for burner of pre-combustion hot air furnace and its control method |
| CN1727498A (en) * | 2004-07-28 | 2006-02-01 | 山东省冶金设计院 | Top burning type hot blast stove with thermal insulation layer in precombustion chamber |
| CN101707893A (en) * | 2007-07-09 | 2010-05-12 | 雅科夫·普罗科皮耶维奇·卡卢金 | Air heater |
| CN201501893U (en) * | 2009-10-20 | 2010-06-09 | 郑州豫兴耐火材料有限公司 | Novel high-wind temperature top combustion type pebble bed hot wind furnace |
| CN202039079U (en) * | 2011-04-11 | 2011-11-16 | 河南省豫兴热风炉工程技术有限公司 | Top combustion stove with gas fuel back-flushing, premixing and preheating functions |
| CN202322893U (en) * | 2011-11-11 | 2012-07-11 | 河南省豫兴热风炉工程技术有限公司 | High thermal storage top combustion stove |
| CN202968587U (en) * | 2012-12-15 | 2013-06-05 | 武钢集团昆明钢铁股份有限公司 | Top combustion stove capable of effectively preventing temperature of combustor from rising excessively |
-
2012
- 2012-12-15 CN CN201210542854.3A patent/CN102978316B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1166529A (en) * | 1997-04-30 | 1997-12-03 | 冶金工业部武汉冶金建筑研究所 | Life-prolonging method for ceramic combustor of hot-blast stove |
| CN1254761A (en) * | 1999-07-06 | 2000-05-31 | 周春林 | Cold-wind cooler for burner of pre-combustion hot air furnace and its control method |
| CN1727498A (en) * | 2004-07-28 | 2006-02-01 | 山东省冶金设计院 | Top burning type hot blast stove with thermal insulation layer in precombustion chamber |
| CN101707893A (en) * | 2007-07-09 | 2010-05-12 | 雅科夫·普罗科皮耶维奇·卡卢金 | Air heater |
| CN201501893U (en) * | 2009-10-20 | 2010-06-09 | 郑州豫兴耐火材料有限公司 | Novel high-wind temperature top combustion type pebble bed hot wind furnace |
| CN202039079U (en) * | 2011-04-11 | 2011-11-16 | 河南省豫兴热风炉工程技术有限公司 | Top combustion stove with gas fuel back-flushing, premixing and preheating functions |
| CN202322893U (en) * | 2011-11-11 | 2012-07-11 | 河南省豫兴热风炉工程技术有限公司 | High thermal storage top combustion stove |
| CN202968587U (en) * | 2012-12-15 | 2013-06-05 | 武钢集团昆明钢铁股份有限公司 | Top combustion stove capable of effectively preventing temperature of combustor from rising excessively |
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| CN102978316A (en) | 2013-03-20 |
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