CN204770633U - Heat accumulation formula roaster high combustion rate burner - Google Patents
Heat accumulation formula roaster high combustion rate burner Download PDFInfo
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- CN204770633U CN204770633U CN201520463320.0U CN201520463320U CN204770633U CN 204770633 U CN204770633 U CN 204770633U CN 201520463320 U CN201520463320 U CN 201520463320U CN 204770633 U CN204770633 U CN 204770633U
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Abstract
The utility model relates to a heat accumulation formula roaster high combustion rate burner, including the nozzle shell, be provided with gas channel (8), combustion chamber (3) in the nozzle shell, lie in the heat accumulation portion of this combustion chamber one side and set up in coal gas pipeline (10) and the kong qi flue gas passageway (7) of nozzle shell one end, its characterized in that: gas channel (8) one side intercommunication has secondary air pipeline (9). Toasting of ladle, middle package, iron package and RH vacuum tank can be applied to to this nozzle. The utility model discloses in, coal gas in the combustion chamber with high temperature air burning, produce after the high -temperature flaming atmosphere from the high -speed blowout of nozzle export of necking down, flame is long and have a very strong rigidity, is reaching 30% or more in energy -conserving reduction environmental pollution and is satisfying the ladle and toast the length of flame and inflexible requirement.
Description
Technical field
The utility model relates to one and is applied to the heat-storage ladle roaster high combustion rate burners such as ladle, tundish, iron bag and RH vacuum tank, belongs to technical field of combustion equipment.
Background technology
The general principle of high combustion rate burner is that namely fuel realize burning completely in combustion chamber.Because combustion chamber is airtight, and keep enough normal pressures, make high-temperature combustion product with at a high speed ejection, thus enhance convection heat transfer' heat-transfer by convection, promote gas stream in the stove circulation, even note temperature.If increase the excess quantity of primary and secondary air, can also adjust the temperature of gas, make it the heating-up temperature close to workpiece, prevent workpiece burning, ensure heating quality, this burner is also known as high velocity temperature adjusting burner.
During iron and steel is produced, the equipment such as ladle and tundish needs to carry out toasting to produce minimum molten steel temperature drop when ensureing transhipment and accept molten steel.Heat-accumulating burner has significantly become the important composition parts of heat-storage ladle roaster due to its energy-saving effect.In existing practical application, heat-accumulating burner has following shortcoming: one is that heat storage adopts conventional ceramic heat storage mostly, accumulation of heat weak effect and frangible; Two is the short and poor rigidity of flame, causes bag end baking temperature low, toasts uneven; Three is that gas-fired is insufficient, and may produce district of localized hyperthermia and cause NO
xa large amount of generations; Four is that in heat-accumulation combustion process, frequent commutation easily produces detonation, gas port blocking during the coal gas using the impurity such as coke-stove gas more.These problems cause roaster accumulation of heat insufficient, high fume temperature, and the frangible need of heat storage are frequently changed, and in bake process, ladle or tundish upper and lower temperature difference greatly, toast uneven, produce a large amount of NO
x, contaminated environment.
Given this, the long and heat storage high-velocity burner of adequate rigidity of a kind of high speed, sufficient combustion, flame is necessary in fact to design.
Utility model content
In order to solve the problems of the technologies described above, the utility model provides a kind of high speed, sufficient combustion, flame long and the heat storage high-velocity burner of adequate rigidity.
In order to achieve the above object, the utility model adopts following technical scheme: a kind of heat-storage ladle roaster high combustion rate burner, comprise burner shell, be provided with in burner shell gas passage (8), combustion chamber (3), be positioned at this side, combustion chamber heat storage unit and be arranged at the gaspipe line (10) of burner shell one end and air exhaust gases passes (7); It is characterized in that: described gas passage (8) side is communicated with auxiliary air pipeline (9).
Preferably, the inner chamber passed through that gives gas in described gas passage (8) is spiral channel.
Preferably, the described heat storage unit heat storage plate (6) that comprises cellular heat storage (5) and contact with this heat storage.
Preferably, described burner shell is provided with the nozzle through with combustion chamber, and the outside bore of described nozzle is less than its bottom inner diameter.
Preferably, described outer wall of combustion chamber is provided with some gas ports through with gas passage (11), described gas port (11) at a certain angle with combustion chamber.
Preferably, fire-resistant floater guide block (4) is provided with between described combustion chamber and heat storage unit.
Preferably, castable refractory (2) is filled with between described burner shell and combustion chamber.
Preferably, described heat storage (5) is corundum-mullite honeycomb ceramics, and long is 100mm, and height is 100mm, and wide is 100mm, and through-hole diameter is 4mm.
Preferably, described heat storage plate (6) adopts high alumina ceramic material, and long is 100mm, and wide is 100mm, and thick is 12mm.
The beneficial effects of the utility model are as follows: gas passage adopts spiral channel, coal gas is dispersed into shallow bid under the promotion of auxiliary air can carry out premix with high temperature air better, ensure the Thorough combustion of coal gas, and reduce the generation in district of localized hyperthermia, decrease NO
xgeneration, reduce the pollution to environment.Employing heat storage combines with heat storage plate, increases heat storage capacity while reducing costs, and heat storage adopts corundum-mullite material, has heat storage capacity strong, feature that is convenient, intensity high long service life that heating surface is large, installation is changed.Arrange combustion chamber, coal gas and air be fully mixed combining combustion in combustion chamber, produces high-temperature atmosphere, and from the burner outlet ejection at a high speed of necking down, the long and adequate rigidity of flame, can toast the bottom of ladle and tundish better, make baking evenly.Adopting auxiliary air to wash away gas passage, while accelerating flow of gas, coal gas remaining in gas passage can be drained when commutating, while preventing detonation, prevent gas passage blocking.Simultaneously high-temperature flue gas is lowered the temperature to gas port by during combustion chamber, plays a protective role, and extends burner service life.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of another angle of the utility model.
Element numbers explanation
Burner shell 1
Castable refractory 2
Combustion chamber 3
Fire-resistant floater guide block 4
Heat storage 5
Heat storage plate 6
Air flue gas pipeline 7
Gas passage 8
Auxiliary air pipeline 9
Gaspipe line 10
Gas port 11
Burner mouth 12
Detailed description of the invention
Below by way of specific instantiation, embodiment of the present utility model is described, those skilled in the art the content disclosed by this description can understand other advantages of the present utility model and effect easily.The utility model can also be implemented or be applied by detailed description of the invention different in addition, and the every details in this description also can based on different viewpoints and application, carries out various modification or change not deviating under spirit of the present utility model.It should be noted that, when not conflicting, the feature in following examples and embodiment can combine mutually.
It should be noted that, the diagram provided in following examples only illustrates basic conception of the present utility model in a schematic way, then only the assembly relevant with the utility model is shown in graphic but not component count, shape and size when implementing according to reality is drawn, it is actual when implementing, and the kenel of each assembly, quantity and ratio can be a kind of change arbitrarily, and its assembly layout kenel also may be more complicated.
A kind of heat-storage ladle roaster high combustion rate burner, belongs to technical field of combustion equipment.This burner can be applicable to the baking of ladle, tundish, iron bag and RH vacuum tank.It comprises
Wherein, burner shell and outlet use refractory material to build, combustion chamber is reserved in burner bottom, fire-resistant floater guide block is installed on top, combustion chamber, and heat storage is put on fire-resistant floater guide block top, and heat storage plate is put on heat storage top, heat storage plate connects air, flue gas pipeline, air successively enters combustion chamber by heat storage plate and heat storage, and flue gas successively enters flue gas pipeline by heat storage and heat storage plate.Helical channel is left between heat storage and burner shell, channel upper side connecting secondary air, side connects coal gas, coal gas and auxiliary air are sprayed by this passage and carry out mixed combustion with the high temperature air of preheating from multiple shallow bid spout, can effectively promote that coal gas burns completely, increase coefficient of excess air during burning, reduce the generation in district of localized hyperthermia, reduce the generation of NOx, reduce environmental pollution.Coal gas in a combustion chamber with high-temperature air burning, from the burner outlet ejection at a high speed of necking down after producing thermal-flame atmosphere, flame is long and have very strong rigidity, reach more than 30% energy-conservation while reduce environmental pollution and meet the requirement of ladle baking to the length of flame and rigidity.
Concrete, refer to shown in Fig. 1.A kind of heat-storage ladle roaster high combustion rate burner, refractory material 2 is all used to build in burner shell 1 and outlet, combustion chamber 3 is reserved in burner bottom, fire-resistant floater guide block 4 is installed on top, combustion chamber, and heat storage 5 is put on fire-resistant floater guide block top, and heat storage plate 6 is put on heat storage top, heat storage plate 6 connects air after connecting heat storage 5, flue gas pipeline 7, air successively enters combustion chamber 3 by heat storage plate 6 and heat storage 5, and flue gas successively enters flue gas pipeline 7 by heat storage 5 and heat storage plate 6.Helical form gas passage 8 is left between heat storage 5 and burner shell 1, side, passage 8 top connecting secondary air pipe line 9, side connects gaspipe line 10, coal gas and auxiliary air are sprayed and high-temperature air burning from multiple shallow bid spout 11 by this passage, and flame is by burner outlet 12 ejection at a high speed of necking down.
Coal gas abundant premix burning in combustion chamber, produces high-temperature atmosphere.The heat storage 5 adopted is corundum-mullite honeycomb ceramics, and long is 100mm, and height is 100mm, and wide is 100mm, and through-hole diameter is 4mm.
Heat storage plate adopts high alumina ceramic material, and long is 100mm, and wide is 100mm, and thick is 12mm.
Auxiliary air pipeline 9 is set, introduces a small amount of cold air dilution coal gas, increase coefficient of excess, ensure coal gas Thorough combustion.
Coal gas is by multiple shallow bid spout 11 distributing and air mixed combustion, and spout is (acute angle) and combustion chamber at a certain angle.
Burner shell 1 adopts mullite pouring material to build, and forms combustion chamber 3 and the burner outlet 12 with necking down.
Remarkable result of the present utility model is:
Gas passage adopts spiral channel, and coal gas is dispersed into shallow bid under the promotion of auxiliary air can carry out premix with high temperature air better, ensures the Thorough combustion of coal gas, and reduces the generation in district of localized hyperthermia, decreases NO
xgeneration, reduce the pollution to environment.
Employing heat storage combines with heat storage plate, increases heat storage capacity while reducing costs, and heat storage adopts corundum-mullite material, has heat storage capacity strong, feature that is convenient, intensity high long service life that heating surface is large, installation is changed.
Arrange combustion chamber, coal gas and air be fully mixed combining combustion in combustion chamber, produces high-temperature atmosphere, and from the burner outlet ejection at a high speed of necking down, the long and adequate rigidity of flame, can toast the bottom of ladle and tundish better, make baking evenly.
Adopting auxiliary air to wash away gas passage, while accelerating flow of gas, coal gas remaining in gas passage can be drained when commutating, while preventing detonation, prevent gas passage blocking.Simultaneously high-temperature flue gas is lowered the temperature to gas port by during combustion chamber, plays a protective role, and extends burner service life.
Show castable refractory 2 in Fig. 2 and be cast in burner shell 1 inside, reserved coal gas and secondary-air passage 8 between castable 2 and burner shell 1, reserved combustion chamber 3 in castable refractory 2, bottom, combustion chamber arranges necking down jet hole 12, fire-resistant floater guide block 4 and heat storage 5 heat storage plate 6 are installed in top, it is strong that this heat-accumulating burner adopts the cellular heat storage of corundum-mullite material to have heat storage capacity, and accumulation of heat face is very big, long-lived advantage.After coal gas enters gas passage 8, be divided into shallow bid after being mixed into helical form gas passage with auxiliary air to spray from gas port 11, with the high temperature air after heat storage preheating in combustion chamber mixed combustion, produce high-temperature atmosphere, enter the burner outlet ejection at a high speed with necking down.Coal gas is divided into shallow bid and mixes with air in combustion chamber by this heat-accumulating burner, can accelerate coal gas and mix with air, increases efficiency of combustion, reduces district of localized hyperthermia, reduces NO
xgeneration.Then coal gas and air in a combustion chamber mixed combustion pass through the spout with necking down, and flame is accelerated, and can effectively increase the length of flame and rigidity.Relatively other these burners of heat-accumulating burner have long service life, heat storage capacity is good, flame is long and adequate rigidity, without advantages such as tempering detonation, energy-conserving and environment-protective.
Operation principle of the present utility model is as follows: when heat-accumulating burner is in fired state, air enters combustion chamber 3 after being preheated to 800 DEG C by top after heat storage plate 6 and heat storage 5, coal gas is then divided into shallow bid and enters combustion chamber 3 from gas port 11 ejection after gas passage 8 mixes with auxiliary air, with high temperature air mixed combustion, producing high-temperature atmosphere entered to be with the burner mouth 12 of necking down to spray, when heat-accumulating burner is in heat storage state, flue gas is discharged after heat storage 5 and heat storage plate 6, and temperature is reduced to less than 150 DEG C.Burner is alternately in burning and heat storage state.
In sum, the utility model effectively overcomes various shortcoming of the prior art and tool high industrial utilization.
Above-described embodiment is illustrative principle of the present utility model and effect thereof only, but not for limiting the utility model.Any person skilled in the art scholar all without prejudice under spirit of the present utility model and category, can modify above-described embodiment or changes.Therefore, such as have in art and usually know that the knowledgeable modifies or changes not departing from all equivalences completed under the spirit and technological thought that the utility model discloses, must be contained by claim of the present utility model.
Claims (9)
1. a heat-storage ladle roaster high combustion rate burner, comprise burner shell, be provided with in burner shell gas passage (8), combustion chamber (3), be positioned at this side, combustion chamber heat storage unit and be arranged at the gaspipe line (10) of burner shell one end and air exhaust gases passes (7); It is characterized in that: described gas passage (8) side is communicated with auxiliary air pipeline (9).
2. heat-storage ladle roaster high combustion rate burner according to claim 1, is characterized in that: the inner chamber passed through that gives gas in described gas passage (8) is spiral channel.
3. heat-storage ladle roaster high combustion rate burner according to claim 1, is characterized in that: the heat storage plate (6) that described heat storage unit comprises cellular heat storage (5) and contacts with this heat storage.
4. heat-storage ladle roaster high combustion rate burner according to claim 1, is characterized in that: described burner shell is provided with the burner mouth (12) through with combustion chamber, and the outside bore of described burner mouth is less than its bottom inner diameter.
5. heat-storage ladle roaster high combustion rate burner according to claim 1, it is characterized in that: described outer wall of combustion chamber is provided with some gas ports through with gas passage (11), described gas port (11) at a certain angle with combustion chamber.
6. heat-storage ladle roaster high combustion rate burner according to claim 1, is characterized in that: be provided with fire-resistant floater guide block (4) between described combustion chamber and heat storage unit.
7. heat-storage ladle roaster high combustion rate burner according to claim 1, is characterized in that: be filled with castable refractory (2) between described burner shell and combustion chamber.
8. heat-storage ladle roaster high combustion rate burner according to claim 3, is characterized in that: described heat storage (5) is corundum-mullite honeycomb ceramics, and long is 100mm, and height is 100mm, and wide is 100mm, and through-hole diameter is 4mm.
9. heat-storage ladle roaster high combustion rate burner according to claim 3, is characterized in that: described heat storage plate (6) adopts high alumina ceramic material, and long is 100mm, and wide is 100mm, and thick is 12mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520463320.0U CN204770633U (en) | 2015-07-01 | 2015-07-01 | Heat accumulation formula roaster high combustion rate burner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520463320.0U CN204770633U (en) | 2015-07-01 | 2015-07-01 | Heat accumulation formula roaster high combustion rate burner |
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| CN204770633U true CN204770633U (en) | 2015-11-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108526451A (en) * | 2017-03-02 | 2018-09-14 | 上海安可科技股份有限公司 | Double heat storage type baking of tundish device |
-
2015
- 2015-07-01 CN CN201520463320.0U patent/CN204770633U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108526451A (en) * | 2017-03-02 | 2018-09-14 | 上海安可科技股份有限公司 | Double heat storage type baking of tundish device |
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