CN204080004U - A kind of double-current field top burning type hot blast stove combustor - Google Patents
A kind of double-current field top burning type hot blast stove combustor Download PDFInfo
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- CN204080004U CN204080004U CN201420459179.2U CN201420459179U CN204080004U CN 204080004 U CN204080004 U CN 204080004U CN 201420459179 U CN201420459179 U CN 201420459179U CN 204080004 U CN204080004 U CN 204080004U
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- air
- coal gas
- bustle pipe
- headspace
- circuit
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Abstract
The utility model discloses a kind of double-current field top burning type hot blast stove combustor, comprise the burner body be made up of vault and cylindrical shell, vault inside is provided with headspace nozzle, and headspace nozzle is connected with headspace pipeline by adapter bonnet; Inner barrel is provided with air circuit and air jet orifices, and air circuit is communicated with annular air bustle pipe by air inlet stub, and air bustle pipe is positioned at cylindrical shell outside; Inner barrel is provided with coal gas circuit and coal gas spray orifice, and coal gas circuit is communicated with ring gas bustle pipe by gas entry short tube, and coal gas bustle pipe is positioned at cylindrical shell outside; Coal gas bustle pipe is between air bustle pipe and headspace pipeline.The two-layer coal gas spray orifice of the utility model forms the coal gas tubular vortex moved downward, arrive air jet orifices position after headspace nozzle injection air mixes with coal gas tubular vortex to mix further with air, ensure the abundant mixing of air and coal gas, coal gas, air separately at least 3 entrances enter circuit, make gas flow distribution even.
Description
Technical field
The utility model belongs to technical field of blast furnace ironmaking, relates to a kind of double-current field top burning type hot blast stove combustor.
Background technology
High wind-warm syndrome, Low investment, long lifetime are the essential characteristics of modern hotblast stove.Theoretical investigation and production practice show, adopt top combustion stove structure, can improve Thermal Efficiency of Hot Blast Stoves, reduce facility investment, extend lifetime of hot-air stove.
Top combustion stove is the most potential hotblast stove.The core technology of top combustion stove is burner, decides the life-span of top combustion stove.Also there are some problems in the domestic structure design aspect for top burning type hot blast stove combustor, the top combustion stove of various ways has appearred in the basis of using for reference Ka Lujinshi hotblast stove, and effect is uneven.
Ka Lujin hot-blast stove gas burner adopts turbulent burner, and the first premix of space gas is then in combustion chambers burn.But both close together, air destroys the rotational flow field of coal gas, and the flue gas causing premixed and preburning to produce hinders coal gas and air to mix further with non-coal gas and air blending, makes combustion conditions worsen.The high-temperature flue gas produced that simultaneously burns forms downward swirling two-phase flows in cone section combustion chamber, and under the action of the centrifugal, along wall area flow velocity is high, central region flow velocity is low for swirling eddy, causes that the rim pressure of air-flow is high and center pressure is low.Along with the increase of tangential velocity, swirl strength increases, and will produce recirculation zone by the heart in the gas flow.The generation of recirculation zone further enhancing the effect of gas and vapor permeation burning, and this is the key of Ka Lujin hotblast stove.But the velocity distribution that result also in section of combustion chamber is uneven, because flue gas enters the uneven difference causing heat transfer of speed of regenerator.
The top burning type hot blast stove combustor of irrotational flow, its flow field produced is unstable, can not be formed and stablize and the flow field structure of symmetry.After air-flow arrives regenerator vault from combustion chamber, enter vault spreader cone section, irrotational flow flow field cannot depend on the wall flowing of expansion because of air-flow, and normally middle part is the highest and circumferential low to enter the static pressure of boring section air-flow, and top pressure more can not Striking symmetry, therefore form segregation air-flow and be inevitable.Such flue gas enters regenerator, will inevitably reduce utilization ratio and the heat-transfer effect of checker brick.
Utility model content
The purpose of this utility model there are provided a kind of double-current field top burning type hot blast stove combustor, and this burner makes coal gas and air reach abundant mixing, perfect combustion.
The technical scheme that the utility model adopts is, a kind of double-current field top burning type hot blast stove combustor, comprising and forming vertical section by vault and cylindrical shell is inverted U-shaped burner body, vault inside is provided with headspace nozzle, headspace nozzle is positioned at the symmetry axis place of vault, the front end of headspace nozzle inside is provided with swirler, and headspace nozzle is connected with headspace pipeline by adapter bonnet;
Inner barrel is provided with air circuit and several air jet orifices, several air jet orifices are identical straight hole, each air jet orifices is all communicated with air circuit, and air circuit is communicated with the air bustle pipe of ring-type by air inlet stub, and air bustle pipe is positioned at cylindrical shell outside;
Inner barrel is provided with coal gas circuit and several coal gas spray orifices, several coal gas spray orifices are identical inclined hole, each coal gas spray orifice is all communicated with coal gas circuit, and coal gas circuit is communicated with the coal gas bustle pipe of ring-type by gas entry short tube, and coal gas bustle pipe is positioned at cylindrical shell outside;
Coal gas bustle pipe and air bustle pipe are all horizontally disposed with, and coal gas bustle pipe is between air bustle pipe and adapter bonnet, and air bustle pipe is communicated with air line with headspace pipeline, and coal gas bustle pipe is communicated with gas line.
Feature of the present utility model is also,
Air bustle pipe, air inlet stub, air circuit and each air jet orifices are all positioned at same level.
Several air jet orifices are evenly arranged along the radial direction of cylindrical shell.
Coal gas bustle pipe, gas entry short tube and coal gas circuit are all positioned at same level, and several coal gas spray orifices are divided into parallel two-layer up and down in the same way, and each coal gas spray orifice is all horizontally disposed with, several coal gas spray orifice staggered arrangement bilevel.
Gas entry short tube and air inlet stub at least even level arrange 3.
Headspace pipeline welds with the bigger diameter end of adapter bonnet, and headspace nozzle welds with the miner diameter end of adapter bonnet.
The beneficial effects of the utility model are: by being provided with two-layer coal gas spray orifice in burner body, air jet orifices and headspace nozzle, two-layer coal gas spray orifice is under the guide effect of mixing section wall, form the coal gas tubular vortex moved downward, headspace nozzle sprays the center of air to coal gas tubular vortex, air jet orifices place is together moved downward after tentatively mixing with coal gas tubular vortex, arrive air jet orifices position to mix further with air, the abundant mixing of air and coal gas can be ensured like this, ensure perfect combustion in combustion chamber, and the relatively uniform flow field of speed can be formed on heat storage.
Gas entry short tube and air inlet stub at least even level arrange 3, coal gas, air is made to have at least 3 entrances to enter circuit separately, make coal gas and air gas uniform flow distribution, air and coal gas can be made to be distributed to equably on air jet orifices and coal gas spray orifice, to make gas flow degree of uniformity more than ± 95%.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of double-current field of the utility model top burning type hot blast stove combustor;
Fig. 2 is the sectional view of Fig. 1;
Fig. 3 is the sectional view of A-A in Fig. 2;
Fig. 4 is the sectional view of B-B in Fig. 2.
In figure, 1. coal gas bustle pipe, 2. gas entry short tube, 3. coal gas circuit, 4. coal gas spray orifice, 5. air bustle pipe, 6. air inlet stub, 7. air circuit, 8. air jet orifices, 9. headspace pipeline, 10. headspace nozzle, 11. swirlers, 12. burner bodies, 13. air lines, 14. vaults, 15. cylindrical shells, 16. gas lines, 17. mixing sections, 18. combustion chambers, 19. adapter bonnets.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.
The utility model provides a kind of double-current field top burning type hot blast stove combustor, as depicted in figs. 1 and 2, comprising and forming vertical section by vault 14 and cylindrical shell 15 is inverted U-shaped burner body 12, vault 14 inside is provided with headspace nozzle 10, headspace nozzle 10 is positioned at the symmetry axis place of vault 14, the front end of headspace nozzle 10 inside is provided with swirler 11, and headspace pipeline 9 welds with the bigger diameter end of adapter bonnet 19, and headspace nozzle 10 welds with the miner diameter end of adapter bonnet 19.
Headspace pipeline 9 inside builds one deck heavy refractory brick by laying bricks or stones, and headspace nozzle 10 and swirler 11 all adopt heat-resisting superalloy to make;
Cylindrical shell 15 inside is provided with air circuit 7 and several air jet orifices 8, several air jet orifices 8 are identical straight hole, each air jet orifices 8 is all communicated with air circuit 7, and air circuit 7 is communicated with the air bustle pipe 5 of ring-type by air inlet stub 6, and it is outside that air bustle pipe 5 is positioned at cylindrical shell 15;
Cylindrical shell 15 inside is provided with coal gas circuit 3 and several coal gas spray orifices 4, several coal gas spray orifices 4 are identical inclined hole, each coal gas spray orifice 4 is all communicated with coal gas circuit 3, and coal gas circuit 3 is communicated with the coal gas bustle pipe 1 of ring-type by gas entry short tube 2, and it is outside that coal gas bustle pipe 1 is positioned at cylindrical shell 15;
Coal gas bustle pipe 1 and air bustle pipe 5 are all horizontally disposed with, and coal gas bustle pipe 1 is between air bustle pipe 5 and adapter bonnet 19, and air bustle pipe 5 is communicated with air line 13 with headspace pipeline 9, and coal gas bustle pipe 1 is communicated with gas line 16; Coal gas bustle pipe 1 and gas entry short tube 2 inside all build one deck refractory materials by laying bricks or stones;
Coal gas bustle pipe 1 and air bustle pipe 5 inside all build one deck heavy refractory brick by laying bricks or stones.
Mixing section 17 is that the internal space surrounded by burner body 12 is formed;
Combustion chamber 18 is that the truncated cone-shaped space surrounded by burner body 12 bottom refractory masonry is formed;
As shown in Figure 3, coal gas bustle pipe 1, gas entry short tube 2 and coal gas circuit 3 are all positioned at same level, several coal gas spray orifices 4 are identical inclined hole, several coal gas spray orifices 4 are divided into parallel two-layer up and down in the same way, each coal gas spray orifice 4 is all horizontally disposed with, several coal gas spray orifice 4 staggered arrangement bilevel; Gas entry short tube 2 at least even level arranges 3.
As shown in Figure 4, several air jet orifices 8 are evenly arranged along the radial direction of cylindrical shell 15, and air inlet stub 6 at least even level arranges 3; Air bustle pipe 5, air inlet stub 6, air circuit 7 and each air jet orifices 8 are all positioned at same level; Air bustle pipe 5 and air inlet stub 6 inside all build one deck refractory materials by laying bricks or stones;
The effect of component in the top burning type hot blast stove combustor of a kind of double-current field of the utility model:
Coal gas bustle pipe 1 connects gaspipe network by gas line 16, provides burning required coal gas.
Gas entry short tube 2 connects coal gas bustle pipe 1 and coal gas circuit 3, and air flow method in coal gas circuit 3 can be made even.
Coal gas circuit 3 distributes coal gas for several coal gas spray orifices 4.
Several coal gas spray orifices 4 are identical inclined hole, and several coal gas spray orifices 4 are divided into two-layer, and Gas Flow is divided into little plume by several coal gas spray orifices 4, and spray along certain angle, form swivel gas stream.
Air bustle pipe 5, by the external burner blower of air line 13, provides burning required air.
Air inlet stub 6 connects air bustle pipe 5 and air circuit 7, and air flow method in air circuit 7 can be made even.
Air circuit 7 is several air jet orifices 8 air distribution.
Air flow is slit into little plume by several air jet orifices 8, and with cylindrical shell 15 central shaft for intersection point sprays, with gas-fired.
Headspace nozzle 10: produce airstream, strengthen coal gas eddy flow center pressure, make burning cigarette can form the relatively uniform flow field of speed on heat storage.
Jet flow field stablized by swirler 11.
Mixing section 17 provides space for air and coal gas mix with primary combustion.
Combustion chamber 18 is air and coal gas primary combustion space.
The principle of work of a kind of double-current field of the utility model top burning type hot blast stove combustor is: coal gas enters coal gas bustle pipe 1 via gas line 16, coal gas circuit 3 is entered by three the gas entry short tubes 2 be connected, coal gas sprays into mixing section 17 along two-layer several coal gas spray orifices 4 equally distributed in coal gas circuit 3, under the guide effect of mixing section 17 wall, form the coal gas tubular vortex moved downward.
Combustion air is then divided into two portions to enter mixing section 17: the air that burner blower provides via air line 13 through reaching burner body 12.First part arrives vault 14 via headspace pipeline 9, headspace pipeline 9 is connected with headspace nozzle 10, the airstream that air produces finally by headspace nozzle 10, airstream is ejected into the center of coal gas tubular vortex, together moves downward after preliminary mixing.Another part enters air bustle pipe 5, air circuit 7 is entered by three air inlet stub 6 be connected, air in air circuit 7 on inwall several air jet orifices 8 equally distributed in the horizontal plane centered by the central shaft of cylindrical shell 15 radial direction spray into mixing section 17, to the central-injection of coal gas tubular vortex, the abundant mixing of air and coal gas can be ensured like this, the abundant mixing of air and coal gas enters combustion chamber 18 with cyclonic form, along wall moving region, combustion chamber 18 flow velocity is high, central region flow velocity is low under the action of the centrifugal for eddy flow, cause that the rim pressure of air-flow is high and center pressure is low.In combustion chamber 18, coal gas tubular vortex and airstream play complementary effect.Airstream rotational flow strengthening center pressure, makes combustion chamber 18 combustion flue gas enter the periphery upward pressure of heat storage and flow velocity is tending towards even; On the other hand coal gas tubular vortex reduces the intensity of airstream, avoid high-temperature flue gas and heat storage directly to contact and center pressure and flow higher than the problem of circumferential air-flow segregation.
A kind of double-current field top burning type hot blast stove combustor, by being provided with two-layer coal gas spray orifice 4 in burner body 12, air jet orifices 8 and headspace nozzle 10, two-layer coal gas spray orifice 4 is under the guide effect of mixing section 17 wall, form the coal gas tubular vortex moved downward, headspace nozzle 10 sprays the center of air to coal gas tubular vortex, air jet orifices 8 place is together moved downward after tentatively mixing with coal gas tubular vortex, arrive air jet orifices 8 position to mix further with air, the abundant mixing of air and coal gas can be ensured like this, ensure perfect combustion in combustion chamber 18, and the relatively uniform flow field of speed can be formed on heat storage.
Gas entry short tube 2 and air inlet stub 6 at least even level arrange 3, coal gas, air is made to have at least three entrances to enter circuit separately, make coal gas and air gas uniform flow distribution, air and coal gas can be made to be distributed to equably on air jet orifices 8 and coal gas spray orifice 4, to make gas flow degree of uniformity more than ± 95%.
Claims (6)
1. a double-current field top burning type hot blast stove combustor, it is characterized in that: comprising and forming vertical section by vault (14) and cylindrical shell (15) is inverted U-shaped burner body (12), vault (14) inside is provided with headspace nozzle (10), headspace nozzle (10) is positioned at the symmetry axis place of vault (14), the front end of headspace nozzle (10) inside is provided with swirler (11), and headspace nozzle (10) is connected with headspace pipeline (9) by adapter bonnet (19);
Described cylindrical shell (15) inside is provided with air circuit (7) and several air jet orifices (8), several air jet orifices (8) are identical straight hole, each air jet orifices (8) is all communicated with air circuit (7), air circuit (7) is communicated with the air bustle pipe (5) of ring-type by air inlet stub (6), and it is outside that air bustle pipe (5) is positioned at cylindrical shell (15);
Described cylindrical shell (15) inside is provided with coal gas circuit (3) and several coal gas spray orifices (4), several coal gas spray orifices (4) are identical inclined hole, each coal gas spray orifice (4) is all communicated with coal gas circuit (3), coal gas circuit (3) is communicated with the coal gas bustle pipe (1) of ring-type by gas entry short tube (2), and it is outside that coal gas bustle pipe (1) is positioned at cylindrical shell (15);
Described coal gas bustle pipe (1) and described air bustle pipe (5) are all horizontally disposed with, coal gas bustle pipe (1) is positioned between air bustle pipe (5) and adapter bonnet (19), described air bustle pipe (5) is communicated with air line (13) with headspace pipeline (9), and coal gas bustle pipe (1) is communicated with gas line (16).
2. one according to claim 1 double-current field top burning type hot blast stove combustor, is characterized in that: described air bustle pipe (5), air inlet stub (6), air circuit (7) and each air jet orifices (8) are all positioned at same level.
3. one according to claim 2 double-current field top burning type hot blast stove combustor, is characterized in that: described several air jet orifices (8) are evenly arranged along the radial direction of cylindrical shell (15).
4. one according to claim 3 double-current field top burning type hot blast stove combustor, it is characterized in that: described coal gas bustle pipe (1), gas entry short tube (2) and coal gas circuit (3) are all positioned at same level, several coal gas spray orifices (4) are divided into parallel two-layer up and down in the same way, each coal gas spray orifice (4) is all horizontally disposed with, several coal gas spray orifice (4) staggered arrangement bilevel.
5. one according to claim 4 double-current field top burning type hot blast stove combustor, is characterized in that: described gas entry short tube (2) and air inlet stub (6) at least even level arrange 3.
6. one according to claim 5 double-current field top burning type hot blast stove combustor, it is characterized in that: described headspace pipeline (9) is connected with the bigger diameter end of adapter bonnet (19), and headspace nozzle (10) is connected with the miner diameter end of adapter bonnet (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420459179.2U CN204080004U (en) | 2014-08-14 | 2014-08-14 | A kind of double-current field top burning type hot blast stove combustor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420459179.2U CN204080004U (en) | 2014-08-14 | 2014-08-14 | A kind of double-current field top burning type hot blast stove combustor |
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| Publication Number | Publication Date |
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| CN204080004U true CN204080004U (en) | 2015-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420459179.2U Expired - Fee Related CN204080004U (en) | 2014-08-14 | 2014-08-14 | A kind of double-current field top burning type hot blast stove combustor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105444171A (en) * | 2015-12-11 | 2016-03-30 | 陈维汉 | Top-combustion-adjustable cyclone type high-speed combusting device |
| CN108368999A (en) * | 2015-11-30 | 2018-08-03 | 保尔伍斯耐火工程有限责任公司 | Top combustion stove |
-
2014
- 2014-08-14 CN CN201420459179.2U patent/CN204080004U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108368999A (en) * | 2015-11-30 | 2018-08-03 | 保尔伍斯耐火工程有限责任公司 | Top combustion stove |
| CN108368999B (en) * | 2015-11-30 | 2020-07-28 | 保尔伍斯德国有限责任公司 | Top combustion furnace |
| TWI710645B (en) * | 2015-11-30 | 2020-11-21 | 德商保爾伍斯耐火材料與工程有限責任公司 | Burner assembly and top combustion hot blast stove using the same |
| US11142804B2 (en) | 2015-11-30 | 2021-10-12 | Paul Wurth Deutschland Gmbh | Top combustion stove |
| EP3384206B1 (en) * | 2015-11-30 | 2022-07-06 | Paul Wurth Deutschland GmbH | Top combustion stove |
| CN105444171A (en) * | 2015-12-11 | 2016-03-30 | 陈维汉 | Top-combustion-adjustable cyclone type high-speed combusting device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150107 Termination date: 20150814 |
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| EXPY | Termination of patent right or utility model |