CN202968587U - Top combustion stove capable of effectively preventing temperature of combustor from rising excessively - Google Patents
Top combustion stove capable of effectively preventing temperature of combustor from rising excessively Download PDFInfo
- Publication number
- CN202968587U CN202968587U CN 201220692781 CN201220692781U CN202968587U CN 202968587 U CN202968587 U CN 202968587U CN 201220692781 CN201220692781 CN 201220692781 CN 201220692781 U CN201220692781 U CN 201220692781U CN 202968587 U CN202968587 U CN 202968587U
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- top combustion
- burner
- stove
- combustor
- temperature
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Abstract
The utility model discloses a top combustion stove capable of effectively preventing the temperature of a combustor from rising excessively. The top combustion stove comprises a stove body, a gas main pipe, an air inlet pipe and a hot air pipe, wherein the combustor and an auxiliary air supply pipeline are arranged in a top combustion chamber of the stove body; and one end of the auxiliary air supply pipeline is communicated with the bottom of the combustor in the top combustion chamber, and the other end of the auxiliary air supply pipeline is communicated with a gas pipeline and/or a nitrogen pipeline. By adopting the auxiliary air supply pipeline, fuel gas can be provided for the top combustion chamber during combustion in the stove, and low-temperature nitrogen can also be fed into the combustion chamber when a hot-blast stove is in an air supply state to prevent a high-temperature gas which enters from the bottom of the stove body from raising the temperature of the combustor excessively so as to stabilize the temperature of the combustor, so that the service life of the combustor is not influenced by a high temperature difference effect. The top combustion stove is simple in structure, reasonable in design and convenient to implement, can effectively prevent the temperature of the combustor from rising excessively, prolongs the service life of the combustor, reduces the production cost and improves the economic benefits.
Description
Technical field
The utility model belongs to the boiler plant technical field, be specifically related to a kind of simple and reasonable, be easy to implement, can effectively prevent the top combustion stove that the burner excessive temperature raises.
Background technology
Top combustion stove is a kind of common boiler plant, gains the name because the combustion chamber is arranged at the top.Combustion chamber and regenerator are in together on central axis, and the rear high-temperature flue gas that can guarantee to burn evenly enters checker brick, has improved the utilization ratio of regenerator.Top combustion stove is when burning stove, and the burner temperature maintains 500 ℃ of left and right usually; Change the air-supply stage over to, the cold wind that bottom of furnace body enters is warming up to 1280 ℃ of left and right through checker brick, and rises near the heating duct of top combustion chamber to the blast furnace heat supply; High-temperature gas heats up the burner temperature thereupon, reaches very soon more than 900 ℃.Yet the refractory materials of burner is easily impaired in the huge temperature difference frequent variations of 500 ℃ ~ 900 ℃, causes the hotblast stove overhaul, has a strong impact on normal production.For this reason, develop a kind of advantages of simple, be easy to implement, can prevent effectively that the top combustion stove that the burner excessive temperature raises is very important, and can produce huge economical effectiveness.
The utility model content
The purpose of this utility model be to provide a kind of simple and reasonable, be easy to implement, can effectively prevent the top combustion stove that the burner excessive temperature raises.
The purpose of this utility model is achieved in that and comprises body of heater, coal gas supervisor, blast pipe, heating duct, in the top combustion chamber of body of heater, burner is set; Described top combustion chamber also is provided with auxiliary feed line, and auxiliary feed line one end is communicated with the burner bottom of top combustion chamber, and the other end is communicated with gaspipe line and/or nitrogen supply air line.
The utility model adopts the auxiliary feed line mode that arranges, both can provide combustion gas for top combustion chamber when burning stove, also can be when hotblast stove be in air-supply, send into low temperature nitrogen to the combustion chamber, prevent that the high-temperature gas that bottom of furnace body enters from raise the excessive temperature of burner, the temperature of stabilizing burner makes not reason high temperature difference effect and affect its work-ing life of burner.The utility model is simple in structure, and is reasonable in design, is easy to implement, and can prevent effectively that the burner excessive temperature from raising, and reduces production costs the work-ing life of prolonging combustion device, increases economic efficiency.
Description of drawings
Fig. 1 is that integrality master of the present utility model looks schematic diagram;
Fig. 2 be Fig. 1 partly cut open schematic diagram;
Fig. 3 be the A-A of Fig. 1 to cross-sectional schematic, mainly show the position relationship of circular line and air-supply duct, rest part omits;
In figure: 1-body of heater, 2-top combustion chamber, 3-burner, 4-coal gas supervisor, 5-circular line, 6-air-supply duct, the 7-inlet pipe, the combustion-supporting tracheae of 8-, 9-heating duct, the 10-nitrogen sparge tube, 11-vacuum breaker, 12-stopping valve, the 13-variable valve, 14-coal gas ring casing, 15-combustor, the 16-exhanst gas outlet, the 17-blast pipe.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described, but never in any form the utility model is limited, any conversion or replacement based on the utility model training centre is done all belong to protection domain of the present utility model.
As shown in Figure 1, 2, the utility model comprises body of heater 1, coal gas supervisor 4, blast pipe 8, heating duct 9, the interior burner 3 that arranges of the top combustion chamber 2 of body of heater 1; Described top combustion chamber 2 also is provided with auxiliary feed line, and auxiliary feed line one end is communicated with burner 3 bottoms 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, burner 3 bottoms that on it, uniform air-supply duct 6 is communicated with in top combustion chamber 2, and circular line 5 is communicated with gaspipe line by inlet pipe 7.
An air-supply duct 6 is set on described circular line 5 at least, and preferred 4 ~ 8 air-supply duct 6 are in order to be the even air feed of burner 3.
Described auxiliary feed line connects gaspipe line.To guarantee burning heater stage, coal gas being sent into combustion chamber 2 through auxiliary feed line, with combustion-supporting gas mixed firing, make the temperature of burner 3 maintain 500 ℃ of left and right.
Described gaspipe line is communicated with nitrogen sparge tube 10.So that after burning stove, utilize auxiliary feed line to be communicated with nitrogen sparge tube 10, namely when hotblast stove is in ventilation state, utilize auxiliary feed line that nitrogen is imported in top combustion chamber 2, the nitrogen dilution high-temperature gas for the combustion chamber cooling, makes the temperature-stable of burner 3 in 500 ℃ of left and right.
Between described gaspipe line and nitrogen sparge tube 10, variable valve 13 is set, to regulate the nitrogen gas supply amount.
Between described gaspipe line and nitrogen sparge tube 10, stopping valve 12 is set, sneaks into coal gas ring casing 14 to prevent nitrogen.Between described gaspipe line and coal gas supervisor 4, vacuum breaker 11 is set, seals 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.
The utility model principle of work and working process:
The utility model adopts the auxiliary feed line mode is set, and the one, can provide combustion gas for top combustion chamber 2 when burning stove, aid burning improves heating intensity, the Quick high combustor temperature; The 2nd, can be in when air-supply at hotblast stove, send into low temperature nitrogen to the combustion chamber, prevent that the high-temperature gas that bottom of furnace body enters from raise the excessive temperature of burner, the temperature of stabilizing burner 3 makes not reason high temperature difference effect and affect its work-ing life of burner 3.
Auxiliary feed line of the present utility model is ring structure, connects burner 3 bottoms by many uniform air-supply duct 6.During hot blast stove burning, coal gas, combustion air enter combustor 15, coal gas ring casing 14, and the nozzle by separately sprays into mixed firing in stove; Auxiliary feed line passes into burner 3 bottoms by air-supply duct 6 with coal gas, realizes stratified combustion, forms by " little torch ", to guarantee that burner 3 can maintain 500 ℃ of left and right.Enter the air-supply stage, coal gas, combustion air stop sending into, and the cold wind that the hotblast stove bottom is sent into is heated to 1280 ℃ of left and right through checker brick, discharge from the heating duct 9 of vault to be fed to blast furnace and to use; Simultaneously, heat energy also can seal in top combustion chamber 2, and the temperature of burner 3 can be lifted to 900 ℃ of left and right very soon.Damage for the not frequent excessively rising of the temperature of keeping burner 3, the utility model utilizes auxiliary feed line to pass into nitrogen after burning stove, utilizes low temperature nitrogen to lower the temperature for burner 3 and maintains 500 ℃ of left and right, helps to protect burner 3.
Claims (10)
1. the top combustion stove that can prevent effectively that the burner excessive temperature from raising, comprise 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; It is characterized in that: described top combustion chamber (2) also is provided with auxiliary feed line, and 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/or nitrogen pipeline.
2. the top combustion stove that can prevent effectively that the burner excessive temperature from raising according to claim 1, it is characterized in that: described auxiliary feed line arranges looping pipeline (5) around top combustion chamber (2), 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).
3. the top combustion stove that can prevent effectively that the burner excessive temperature from raising according to claim 2, is characterized in that: an air-supply duct (6) is set on described circular line (5) at least.
4. the according to claim 2 or 3 described top combustion stoves that can prevent effectively that the burner excessive temperature from raising, is characterized in that: 4 ~ 8 air-supply duct (6) are set on described circular line (5).
5. the top combustion stove that can prevent effectively that the burner excessive temperature from raising according to claim 1 and 2, is characterized in that: described auxiliary feed line connection gaspipe line.
6. the top combustion stove that can prevent effectively that the burner excessive temperature from raising according to claim 1, is characterized in that: described gaspipe line connection nitrogen sparge tube (10).
7. the top combustion stove that can prevent effectively that the burner excessive temperature from raising according to claim 6, is characterized in that: variable valve (13) is set between described gaspipe line and nitrogen sparge tube (10).
8. the top combustion stove that can prevent effectively that the burner excessive temperature from raising according to claim 6, is characterized in that: stopping valve (12) is set between described gaspipe line and nitrogen sparge tube (10).
9. the top combustion stove that can prevent effectively that the burner excessive temperature from raising according to claim 6, is characterized in that: between described gaspipe line and coal gas supervisor (4), vacuum breaker (11) is set.
10. the top combustion stove that can prevent effectively that the burner excessive temperature from raising according to claim 2, it 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 |
|---|---|---|---|
| CN 201220692781 CN202968587U (en) | 2012-12-15 | 2012-12-15 | Top combustion stove capable of effectively preventing temperature of combustor from rising excessively |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220692781 CN202968587U (en) | 2012-12-15 | 2012-12-15 | Top combustion stove capable of effectively preventing temperature of combustor from rising excessively |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202968587U true CN202968587U (en) | 2013-06-05 |
Family
ID=48509687
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220692781 Withdrawn - After Issue CN202968587U (en) | 2012-12-15 | 2012-12-15 | Top combustion stove capable of effectively preventing temperature of combustor from rising excessively |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202968587U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102978316A (en) * | 2012-12-15 | 2013-03-20 | 武钢集团昆明钢铁股份有限公司 | Top combustion stove capable of effectively preventing temperature of burner from excessively rising |
| CN103882172A (en) * | 2014-03-25 | 2014-06-25 | 济钢集团有限公司 | Blast furnace hot blast stove heat preservation device |
-
2012
- 2012-12-15 CN CN 201220692781 patent/CN202968587U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102978316A (en) * | 2012-12-15 | 2013-03-20 | 武钢集团昆明钢铁股份有限公司 | Top combustion stove capable of effectively preventing temperature of burner from excessively rising |
| CN102978316B (en) * | 2012-12-15 | 2015-02-04 | 武钢集团昆明钢铁股份有限公司 | Top combustion stove capable of effectively preventing temperature of burner from excessively rising |
| CN103882172A (en) * | 2014-03-25 | 2014-06-25 | 济钢集团有限公司 | Blast furnace hot blast stove heat preservation device |
| CN103882172B (en) * | 2014-03-25 | 2015-12-09 | 济钢集团有限公司 | A kind of blast funnace hot blast stove attemperator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130605 Effective date of abandoning: 20150204 |
|
| RGAV | Abandon patent right to avoid regrant |