CN202885517U - Sandwich heating aluminum melting furnace system - Google Patents
Sandwich heating aluminum melting furnace system Download PDFInfo
- Publication number
- CN202885517U CN202885517U CN 201220357580 CN201220357580U CN202885517U CN 202885517 U CN202885517 U CN 202885517U CN 201220357580 CN201220357580 CN 201220357580 CN 201220357580 U CN201220357580 U CN 201220357580U CN 202885517 U CN202885517 U CN 202885517U
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- Prior art keywords
- flue
- furnace
- combustion chamber
- aluminum melting
- molten aluminium
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- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 80
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 80
- 238000010438 heat treatment Methods 0.000 title claims abstract description 22
- 238000002844 melting Methods 0.000 title abstract description 11
- 230000008018 melting Effects 0.000 title abstract description 11
- 238000002485 combustion reaction Methods 0.000 claims abstract description 23
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000003546 flue gas Substances 0.000 claims abstract description 21
- 239000004411 aluminium Substances 0.000 claims description 67
- 239000000446 fuel Substances 0.000 claims description 10
- 239000000155 melt Substances 0.000 claims description 9
- 230000007246 mechanism Effects 0.000 claims description 8
- 239000002918 waste heat Substances 0.000 claims description 8
- 230000001939 inductive effect Effects 0.000 claims description 7
- 238000011084 recovery Methods 0.000 claims description 6
- 239000011449 brick Substances 0.000 claims description 4
- 239000002657 fibrous material Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 6
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 239000007921 spray Substances 0.000 abstract 1
- 239000003517 fume Substances 0.000 description 7
- 239000007788 liquid Substances 0.000 description 6
- 238000012544 monitoring process Methods 0.000 description 5
- 239000007789 gas Substances 0.000 description 4
- 239000003245 coal Substances 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 238000007499 fusion processing Methods 0.000 description 2
- 239000012943 hotmelt Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- IXSZQYVWNJNRAL-UHFFFAOYSA-N etoxazole Chemical compound CCOC1=CC(C(C)(C)C)=CC=C1C1N=C(C=2C(=CC=CC=2F)F)OC1 IXSZQYVWNJNRAL-UHFFFAOYSA-N 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000005453 pelletization Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
Abstract
The utility model discloses a sandwich heating aluminum melting furnace system which comprises a furnace body, a flue and a control device. A combustion chamber, an aluminum melting pool and a plurality of combustors are arranged inside the furnace body, the top portion of the combustion chamber is a sloping arch-shaped furnace top, and the spray nozzle of the combustion chamber is horizontally arranged and faces the inner side arc wall of the sloping arc-shaped furnace top. The flue is arranged below the aluminum melting pool and is communicated with the combustion chamber, and the flue is arranged below the aluminum melting pool. The sandwich heating aluminum melting furnace system directly utilizes high-temperature flue gas inside the flue as a heat source to heat the bottom portion of the aluminum melting pool, the sloping arch-shaped furnace top is matched, a flame rotating at high speed is formed inside a furnace, dead combustion corners and uneven heating of the aluminum melting pool are eliminated, sandwich even heating of the materials inside the aluminum melting pool is achieved, an added flue gate well controls the furnace pressure inside the furnace, a phenomenon that the flame is easy to eject is eliminated, the service life of a furnace gate is prolonged, and energy consumption is reduced.
Description
Technical field
The utility model relates to a kind of industrial furnace, refers more particularly to a kind of molten aluminium furnace system of Double-side Heating of realizing flue gas waste heat recovery.
Background technology
At present, domestic molten aluminium stove majority is Horizontal rectangular flame reverberatory furnace, and take fuel oil (diesel oil, heavy oil) as main, combustion gas (natural gas, coal gas) and fire coal are auxiliary.Be characterized in:
Stove shape: stove profile and molten bath are cuboid;
Structure: in combustion process, burned flame direct projection furnace charge, four jiaos in burner hearth become the dead angle, the furnace gas poor fluidity, and iron loss is larger, and temperature of aluminum liquid is inhomogeneous, and bottom temperature is lower;
Reinforced: all materials all add from stove gate, and mostly are hand stock, and workman's labour intensity is very large, and efficiency is very low;
Sealing: because uncontrollable furnace pressure makes fire door leakage fire leakage heat all around very serious, especially in the fusion process, burned flame constantly ejects around fire door, causes a large amount of heat-energy losses, and the energy consumption of stove is high, the fire door life-span is short, and production environment is abominable;
Fume emission: adopt directly discharging from kiln gas, exhaust temperature is higher, usually at 1000 ℃, heat-energy losses is very large, because molten aluminium stove has extremely strong corrosive power to metal after the mixture of its furnace gas and flue gas enters flue behind some flux of spreading, the covering agent in fusion process, particularly cold end corrosion is even more serious, causes very most medium-sized and small enterprises can't waste-heat recovery device be installed and direct unordered smoke evacuation is very large to ambient influnence.
China Patent No. be 201020188921.2, name is called a kind of utility model patent of molten aluminium stove, a kind of molten aluminium stove is disclosed, comprise body of heater and be arranged on charging fire door, burner, the exploration type thermocouple on this body of heater and add the aluminium liquid device, described body of heater is the circumcircle polygonized structure, and described charging fire door is positioned on the side wall of this body of heater; Above-mentioned molten aluminium stove comprises that also one is arranged on electromagnetism or the permanent magnetic stirrer on the body of heater inner chamber bottom surface, and this electromagnetism or permanent magnetic stirrer center line are positioned on the center of gravity line of described body of heater inner chamber, by the body of heater profile is designed to polygon, and on each side wall of body of heater reasonable disposition fire door burner, the exploration type temperature thermocouple, aluminium flowing-out mouth and flue gas discharge opening etc., when configuration electromagnetism or permanent magnetic stirrer work, can eliminate well and have the phenomenon that stirs the dead angle when stirring, but because aluminium liquid relies on electromagnetism or permanent magnetic stirrer to stir, mechanism's complexity and cost are higher, simultaneously, pressure in the stove is still uncontrollable, fume afterheat also can't reclaim, cause heat energy to lose in a large number, the life-span of fire door also shortens greatly.
The utility model content
The utility model mainly solves uncontrollable, the irretrievable technical problem of fume afterheat of common molten aluminium stove furnace pressure, and solving simultaneously the heating of aluminium liquid needs to adopt agitator to cause higher, the baroque technical problem of cost; Provide the abundant Mist heat recovering of a kind of energy, can be to molten aluminium pond Double-side Heating and the controlled molten aluminium furnace system of furnace pressure.
In order to solve the technical problem of above-mentioned existence, the utility model mainly is to adopt following technical proposals:
A kind of Double-side Heating of the present utility model melts the aluminium furnace system, comprise body of heater, flue and control device, the interior wall of described body of heater is made of refractory fireclay block, the exterior wall of body of heater is made of light fire brick, the body of heater side is provided with fire door, be provided with the combustion chamber in the body of heater, molten aluminium pond and some burners, described combustion chamber and described molten aluminium pond are setting up and down, it is characterized in that: the top of described combustion chamber is for partially encircleing furnace roof, consisted of by refractory fireclay block, described flue is located at the below in described molten aluminium pond and communicates with the combustion chamber, and flue is set directly at the below in molten aluminium pond, and the high-temperature flue gas in the flue adds the bottom in hot melt aluminium pond as thermal source, realize the Double-side Heating in molten aluminium pond, improved the slow defective of bottom, aluminium pond intensification that causes because of liquid aluminium heat-transfer capability degradation, cooperated the flame by inclined to one side arch furnace roof High Rotation Speed, the material that melts in the aluminium pond is fully heated, having a narrow range of temperature of aluminium liquid, fully effectively utilize fume afterheat, increase melting rate, improve output.
As preferably, described inclined to one side arch furnace roof encircles partially for circle, the nozzle of described burner is horizontally disposed with and over against the inside arc wall of inclined to one side arch furnace roof, furnace roof adopts partially arch design, the flame of burner ejection enters the combustion chamber along the tangent line of inclined to one side arch, by inclined to one side arch furnace roof flame is pressed to molten aluminium pond, forms flame High Rotation Speed in stove, eliminate the burning dead angle in molten aluminium pond and the inequality of being heated, thereby strengthened the convection heat transfer' heat-transfer by convection of flame and material and the radiant heat transfer of inclined to one side arch furnace roof.
As preferably, described flue inwall is provided with chamotte brick, built refractory concrete between the bottom of flue top and described molten aluminium stove, the exit of flue is provided with flue valve, and flue valve can be controlled the furnace pressure in the burner hearth, when furnace pressure is higher when flame is sprayed from fire door easily, can suitably increase the aperture of flue valve, improve the amount of drawing of flue gas, reduced the pressure in the stove, reduce the radiation loss of fire door.
As preferably, described flue is two, is symmetricly set on side by side the below in described molten aluminium pond, and the twin flue design has increased the heat exchange area of flue gas, makes the flue gas of high temperature and the abundant heat exchange in bottom in molten aluminium pond, thus the production capacity of raising stove.
As preferably, described molten aluminium furnace system also is provided with fume waste heat exchange device, described fume waste heat exchange device is connected with described flue valve, the flue gas of the lower temperature after cooling, can extract the preheating as material preheating or combustion air, the abundant after-heat in the recovered flue gas has alleviated the cost of follow-up flue gas dust collecting system simultaneously.
As preferably, described fire door is high aluminum fiber material fire door, has strengthened heat resistance and the impact resistant capability of fire door.
As preferably, described control device comprises mechanism for monitoring and governor motion, described mechanism for monitoring comprises the furnace temperature watch-dog, the furnace pressure watch-dog, the air output watch-dog, air inducing amount watch-dog, fuel nozzle amount watch-dog, described adjusting device comprises the fire door controller, the flue valve opening controller, the air output controller, the air inducing amount controller, the fuel nozzle amount controller, furnace temperature in the monitor control mechanism Real-Time Monitoring body of heater, furnace pressure, air output, the parameter of air inducing amount and fuel nozzle amount, and the corresponding controllers by governor motion, adjust fire door, flue valve aperture and air output, the flame amount, keep furnace pressure and furnace temperature in the molten aluminium stove, avoid flame from fire door ejection, energy-saving consumption-reducing.
The beneficial effects of the utility model are: directly utilize high-temperature flue gas in the flue to add the bottom in hot melt aluminium pond as thermal source, cooperate inclined to one side arch formula furnace roof, in stove, form the flame of High Rotation Speed, eliminate the burning dead angle in molten aluminium pond and the inequality of being heated, realized the double-faced uniform heating of material in the molten aluminium pond, and the flue valve of setting up, controlled well the furnace pressure in the burner hearth, eliminate flame easily from the phenomenon of fire door ejection, prolonged the service life of fire door, reduced energy consumption.
Description of drawings
Fig. 1 is a kind of generalized section of the present utility model.
Fig. 2 is the side-looking generalized section of Fig. 1.
1. bodies of heater among the figure, 2. flue, 3. interior wall, 4. exterior wall, 5. fire door, 6. combustion chamber, 7. molten aluminium pond, 8. burner, 9. inclined to one side arch furnace roof, 10. flue valve.
The specific embodiment
Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment: a kind of Double-side Heating of present embodiment melts the aluminium furnace system, as depicted in figs. 1 and 2, comprise body of heater 1, flue 2 and control device, the interior wall 3 of body of heater is made of refractory fireclay block, the exterior wall 4 of body of heater is made of light fire brick, the body of heater side is provided with high aluminum fiber material fire door 5, be provided with combustion chamber 6 in the body of heater, molten aluminium pond 7 and two burners 8, combustion chamber and molten aluminium pond are setting up and down, the top of combustion chamber is partially to encircle furnace roof 9, be made of refractory fireclay block, partially encircle furnace roof and be partially arch of 1/12 circle, the nozzle of burner is horizontally disposed with and over against the inside arc wall of inclined to one side arch furnace roof; Flue adopts the twin flue design, be arranged symmetrically in side by side molten aluminium pond under and communicate with the combustion chamber, the flue inwall is equipped with refractory fireclay block, between the bottom of flue top and molten aluminium stove, built refractory concrete, the exit of flue is designed with flue valve 10, and flue valve is externally connected with flue gas waste heat recovery apparatus; Control device comprises mechanism for monitoring and governor motion, mechanism for monitoring comprises furnace temperature watch-dog, furnace pressure watch-dog, air output watch-dog, air inducing amount watch-dog, fuel nozzle amount watch-dog, and adjusting device comprises fire door controller, flue valve opening controller, air output controller, air inducing amount controller, fuel nozzle amount controller.
When molten aluminium furnaceman does, the aluminium ingot raw material joins in the molten aluminium pond by fire door, the burner starting ignition, nozzle is to the combustion chamber jet flames, partially encircleing under the effect of furnace roof, flame presses down and presents convolution, molten aluminium pond is heated evenly, avoided the burning dead angle, but by control device adjusting furnace temperature and furnace pressure, air-fuel ratio, the temperature rising in molten aluminium pond is reached more than 1000 ℃, aluminium ingot begins fusing from top, simultaneously, discharge through being arranged on underground twin flue under air-introduced machine draft effect near 1000 ℃ high-temperature flue gas, the heat resistance concrete of fume afterheat by the flue top heats the bottom in molten aluminium pond in the mode of convection current and radiation, this moment, the heat-exchange surface temperature in flue and molten aluminium pond can reach the aluminium fusing point more than 660 ℃, the aluminium ingot in molten aluminium pond is subject to up and down two-sided heating, aluminium ingot intensification burn-off rate is accelerated, and flue gas is outwards discharged through chimney by dust pelletizing system by flue valve after the cooling, outside flue valve, also be connected with flue gas waste heat recovery apparatus, low temperature exhaust heat by the heat exchanger recovered flue gas is used for heating combustion air or produces hot water, alleviated the cost of follow-up flue gas dust collecting system, flue valve has been controlled the flow of flue gas, indirectly control furnace pressure, make furnace pressure reach designing requirement.
Calculate from economic angle, the every reduction by 1% of scaling loss, melting ton aluminium benefit is equivalent to about fuel savings oil 60kg, after measured, this system can save the about 25kg mark of coal consumption coal/hour, and in the reduction fuel consumption, also reduced the discharge capacity of various dusty gas.
More than explanation is not that the utility model has been done restriction; the utility model also is not limited only to giving an example of above-mentioned explanation; the variation that those skilled in the art make in essential scope of the present utility model, retrofit, increase or replace, all should be considered as protection domain of the present utility model.
Claims (7)
1. a Double-side Heating melts the aluminium furnace system, comprise body of heater (1), flue (2) and control device, the interior wall of described body of heater (3) is made of refractory fireclay block, the exterior wall of body of heater (4) is made of light fire brick, the body of heater side is provided with fire door (5), be provided with combustion chamber (6), molten aluminium pond (7) and some burners (8) in the body of heater, described combustion chamber and described molten aluminium pond are setting up and down, it is characterized in that: the top of described combustion chamber is for partially encircleing furnace roof (9), be made of refractory fireclay block, described flue is located at the below in described molten aluminium pond and communicates with the combustion chamber.
2. the molten aluminium furnace system of a kind of Double-side Heating according to claim 1 is characterized in that: described inclined to one side arch furnace roof (9) is circle arch partially, and the nozzle of described burner (8) is horizontally disposed with and over against the inside arc wall of inclined to one side arch furnace roof.
3. a kind of Double-side Heating according to claim 1 melts the aluminium furnace system, it is characterized in that: described flue (2) inwall is provided with refractory fireclay block, built refractory concrete between the bottom of flue top and described molten aluminium stove, the exit of flue is provided with flue valve (10).
4. according to claim 1 and 2 or the molten aluminium furnace system of 3 described a kind of Double-side Heatings, it is characterized in that: described flue (2) is two, is symmetricly set on side by side the below in described molten aluminium pond (7).
5. a kind of Double-side Heating according to claim 1 melts the aluminium furnace system, and it is characterized in that: described molten aluminium furnace system also is provided with flue gas waste heat recovery apparatus, and described flue gas waste heat recovery apparatus is connected with described flue valve (10).
6. a kind of Double-side Heating according to claim 1 melts the aluminium furnace system, and it is characterized in that: described fire door (5) is high aluminum fiber material fire door.
7. a kind of Double-side Heating according to claim 1 melts the aluminium furnace system, it is characterized in that: described control device comprises monitor control mechanism and governor motion, described monitor control mechanism comprises furnace temperature watch-dog, furnace pressure watch-dog, air output watch-dog, air inducing amount watch-dog, fuel nozzle amount watch-dog, and described governor motion comprises fire door controller, flue valve opening controller, air output controller, air inducing amount controller, fuel nozzle amount controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220357580 CN202885517U (en) | 2012-07-23 | 2012-07-23 | Sandwich heating aluminum melting furnace system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220357580 CN202885517U (en) | 2012-07-23 | 2012-07-23 | Sandwich heating aluminum melting furnace system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202885517U true CN202885517U (en) | 2013-04-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220357580 Expired - Fee Related CN202885517U (en) | 2012-07-23 | 2012-07-23 | Sandwich heating aluminum melting furnace system |
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| Country | Link |
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| CN (1) | CN202885517U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104567359A (en) * | 2014-12-31 | 2015-04-29 | 佛山市南海研明热能设备科技有限公司 | Infrared gas jet-flow aluminum bar heating furnace |
-
2012
- 2012-07-23 CN CN 201220357580 patent/CN202885517U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104567359A (en) * | 2014-12-31 | 2015-04-29 | 佛山市南海研明热能设备科技有限公司 | Infrared gas jet-flow aluminum bar heating furnace |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160902 Address after: 100084 No. 3, apartment 18, Tsinghua University, Beijing, Haidian District, 11 Patentee after: Li Wei Address before: Room 906, Huaxing century building, No. 317 Wan Tong Road, 310012, Hangzhou, Zhejiang, Xihu District Patentee before: ZHEJIANG DEQIAN ENERGY-SAVING TECHNOLOGY CO., LTD. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130417 Termination date: 20180723 |