CN204438825U - The smoke processing system of top blast stove - Google Patents
The smoke processing system of top blast stove Download PDFInfo
- Publication number
- CN204438825U CN204438825U CN201520050541.5U CN201520050541U CN204438825U CN 204438825 U CN204438825 U CN 204438825U CN 201520050541 U CN201520050541 U CN 201520050541U CN 204438825 U CN204438825 U CN 204438825U
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- CN
- China
- Prior art keywords
- flue
- top blast
- blast stove
- processing system
- waste heat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The utility model discloses a kind of smoke processing system of top blast stove, comprise top blast stove and waste heat boiler, the exhaust opening in top blast furnace roof portion is communicated with by flue with gas approach waste heat boiler being positioned at radiant section front end, described flue is the straight tube of oblique layout, the upside tube wall of flue is provided with fuel nozzle, and the spray material port of fuel nozzle is inserted in the tube chamber of flue.The utility model adopts oblique layout and the flue of Non-water-cooled wall construction, not only easy for installation, cost is low, and fuel nozzle is set at the upside tube wall of flue, in flue, fuel and oxygen is sprayed into like this by fuel nozzle, reduction-state composition oxidizing fire in high-temperature flue gas can be generated solid to return in top blast stove, thus reduce the generation of the flue dust adhesion problem of flue pipe wall.Compared with prior art, the security incident adopting this smoke processing system can directly avoid causing because of seepy question occurs, thus greatly improves the security of production.
Description
Technical field
The utility model relates to technical field of smelting, is specifically related to a kind of smoke processing system of top blast stove.
Background technology
At present, adopting top blast stove to carry out bath smelting is one of technology comparatively common in copper smelting by pyrometallurgy, the high-temperature flue gas produced in top blast stove melting concentrate process is generally discharge from the furnace roof of body of heater and introduced in waste heat boiler by flue to recycle, employing waste heat boiler can trap the part flue dust in high-temperature flue gas on the one hand, reduce the dustiness of flue gas, the calorific value of high-temperature flue gas can be adopted water to be heated into hot water or the steam of production on the other hand.
At present, two sections are mainly divided into: i.e. radiant section and convection section in the body of heater of copper metallurgy waste heat boiler, radiant section is mainly used for cooling high temperature flue gas, and the melt granules coagulating sedimentation in flue gas is got off, and the waste heat of convection section mainly in recovered flue gas, concrete, the burner hearth of radiant section is a larger cooling space, inboard wall of burner hearth is provided with water-cooling wall, and in the burner hearth of convection section, arrange convection bank, during use, all cold water is passed in the steel pipe of the water-cooling wall of radiant section and in the convection bank of convection section, high-temperature flue gas enters from the gas approach being positioned at radiant section front end, first through the burner hearth of radiant section, because high-temperature flue-gas is now high, therefore in the burner hearth process flowing through radiant section, radiant heat transfer is passed through with the heating surface of water-cooling wall, thus by the cool water heating in the steel pipe of water-cooling wall, such high-temperature flue gas is part flue dust in radiant section sedimentation, temperature is down to about 800 DEG C, flow through the burner hearth of convection section afterwards again and carry out convection heat transfer' heat-transfer by convection with the heating surface of convection bank, the low-temperature flue gas that the temperature finally produced is about about 200 DEG C is discharged from exhanst gas outlet.
In actual production, because the high-temperature flue-gas of discharging in top blast stove is up to 1200 DEG C, the temperature of flue gas is higher and in flamboyancy, therefore in order to fully increase the heat transfer space of high-temperature flue gas, extend the service life of waste heat boiler simultaneously, the scheme that current copper metallurgy enterprise adopts is: in limited space, the length of the flue 1 of the gas approach of the exhaust opening and waste heat boiler that connect top blast stove is improved, as shown in Figure 1, this flue 1 comprises three sections on the whole: flue gas ascent stage 1a, horizontal segment 1b and flue gas descending branch 1c, the high-temperature flue gas of namely discharging from the exhaust opening 2a of top blast stove 2 first upwards flows through the flue gas ascent stage 1a of flue 1, then proceed to horizontal segment 1b and carry out bottom horizontal flow sheet, flowed downward by flue gas descending branch 1c more afterwards, finally enter in the burner hearth of radiant section from the gas approach 3a of waste heat boiler 3.
The technological deficiency existed in above-mentioned prior art is: the arrangement of described flue 1 is too complicated, substantially increases the construction cost of equipment undoubtedly, and partial particulate thing in high-temperature flue gas very easily sedimentation be bonded on the inwall of flue, be difficult to remove.Simultaneously, rising pipeline section 1a many employings film water cold wall structure of current flue 1, to ensure the safety of equipment, continuous service, but this just makes rising pipeline section 1a once there is drainage, water wherein will flow directly in top blast stove 2 downwards along rising pipeline section 1a, not only cause the refractory material in stove impaired, and phenomenon of blasting after melt contacts in water and stove, thus cause security incident, moreover, after particle in high-temperature flue gas passes through the radiation heat transfer of the radiant section of waste heat boiler 3, coagulating sedimentation is on burner hearth bottom and water-cooling wall, bring difficulty not only to the cleaning work of postorder, and the thermal radiation effect greatly reduced between high-temperature flue gas and water-cooling wall.Therefore, how to reduce equipment manufacturing cost cost, ensure the stable recycling of copper metallurgy high-temperature flue gas, this is one of problem of always studying of technical staff.
Summary of the invention
The purpose of this utility model is to provide a kind of smoke processing system of safe and reliable to operation, top blast stove that cost is low.
For achieving the above object, the technical solution adopted in the utility model is: a kind of smoke processing system of top blast stove, comprise top blast stove and waste heat boiler, the exhaust opening in top blast furnace roof portion is communicated with by flue with gas approach waste heat boiler being positioned at radiant section front end, it is characterized in that: described flue is the straight tube of oblique layout, the upside tube wall of flue is provided with fuel nozzle, and the spray material port of fuel nozzle is inserted in the tube chamber of flue.
The beneficial effect adopting technique scheme to produce is: compared with the flue of the bending complexity of prior art, the utility model adopts the flue of the straight pipe type of oblique layout, so not only easy for installation, cost is low, and fuel nozzle is set on the upside tube wall of flue, like this for the flue that common steel tube material is made, although it is not water wall structure, but in flue, spray into fuel and oxygen by fuel nozzle, can by the CO in high-temperature flue gas, the reduction-state compositions such as S carry out the solids such as oxidizing fire generation sulfate and return in top blast stove, thus greatly reduce the generation of the flue dust adhesion problem of flue pipe wall, that is, compared with prior art, the flue that the utility model adopts eliminates the layout of water-cooling wall, so directly can avoid the generation causing security incident because of seepy question.Meanwhile, the utility model, by firing optimization high-temperature flue gas composition, also can greatly reduce the fume amount flowed in waste heat boiler, and then reduces the particle total amount of coagulating sedimentation on burner hearth bottom and water-cooling wall.
Accompanying drawing explanation
Fig. 1 is the arrangement figure of the flue of prior art;
Fig. 2 is structural representation of the present utility model;
Fig. 3 is that the A-A of Fig. 2 is to schematic diagram.
Detailed description of the invention
A kind of smoke processing system of top blast stove, comprise top blast stove 10 and waste heat boiler 20, the exhaust opening 11 at top blast stove 10 top is communicated with by flue 30 with the gas approach 21 waste heat boiler 20 being positioned at radiant section 20a front end, described flue 30 is the straight tube of oblique layout, the upside tube wall of flue 30 is provided with fuel nozzle 40, and the spray material port of fuel nozzle 40 is inserted in the tube chamber of flue 30.As Fig. 1, shown in 2, compared with the flue 1 of the bending complexity of prior art, the utility model adopts the flue 30 of the straight pipe type of oblique layout, so not only easy for installation, cost is low, and fuel nozzle 40 is set on the upside tube wall of flue 30, like this for the flue 30 that common steel tube material is made, although it is not water wall structure, but in flue 30, spray into fuel and oxygen by fuel nozzle 40, can by the CO in high-temperature flue gas, the reduction-state compositions such as S carry out oxidizing fire and generate sulfate, the solids such as tri-iron tetroxide return in top blast stove, thus greatly reduce the generation of the flue dust adhesion problem of the inwall of flue 30, that is, compared with prior art, the flue 30 that the utility model adopts eliminates the layout of water-cooling wall, so directly can avoid the generation causing security incident because of seepy question, thus substantially increase the security of production.Certainly, the fuel passed into and oxygen also can play certain burning removal effect for the adhesive being deposited on flue 30 inwall, simultaneously, also the composition of high-temperature flue gas effectively can be adjusted by oxidizing fire effect, thus greatly reduce the fume amount flowed in waste heat boiler 20, and then reduce the particle total amount of coagulating sedimentation on the burner hearth bottom and water-cooling wall 22 of the radiant section 20a of waste heat boiler 20.Preferably, on the upside tube wall of described flue 30, interval is furnished with 2-3 fuel nozzle 40, as shown in Figure 2, by the layout of multiple fuel nozzle 40, can have according to the bonding situation of the composition transfer of high-temperature flue gas and flue 30 inwall and select one or more fuel nozzle 40 to spray into fuel and oxygen in flue 30.
As further preferred version: the furnace wall of described waste heat boiler 20 is provided with the air nozzle 50 spraying into air in the burner hearth of radiant section 20a, as shown in Figure 2,3, by the air blowing effect of air nozzle 50, the flow direction of the high-temperature flue gas in the burner hearth of the radiant section of waste heat boiler 20 can be changed, increase the flowing velocity of high-temperature flue gas simultaneously, so can improve the radiant heat transfer effect of the water-cooling wall 22 in high-temperature flue gas and radiant section 20a, and then improve the heat recovery rate of high-temperature flue gas.
Actually add man-hour, described air nozzle 50 is arranged on waste heat boiler 20, near the furnace wall, both sides of radiant section 20a front end.The parts such as drum are furnished with for the top of the waste heat boiler of copper metallurgy outfit in prior art, therefore, air nozzle 50 is arranged on waste heat boiler 20 by the utility model, on the furnace wall, both sides of radiant section 20a front end, so both easy to process, the air sprayed in the burner hearth of radiant section 20a can be made again to mix with high-temperature flue gas wherein in a horizontal manner, and then improve the flowing velocity of high-temperature flue gas, preferably, 2-3 air nozzle 50 is furnished with near the Shang Jun interval, furnace wall, both sides of radiant section 20a front end, as shown in Figure 3, air nozzle 50 positioned opposite on the furnace wall, both sides near radiant section 20a front end, air is made to be carry out blowing from the both sides of high-temperature flue gas to it like this, so can improve thermal radiation effect further, consider that the furnace cavity of radiant section 20a is large, the utility model is preferably interval on every wing furnace wall of radiant section 20a and arranges 2-3 air nozzle 50.Certainly, the water-cooling wall 22 of prior art both can be arranged by multiple steel pipe 221 interval to form, also can be overall in tube panel shape, no matter be which kind of structure, when arranging air nozzle 50, all need the steel pipe 221 avoiding water-cooling wall 22, in other words the utility model be adjacent layout on water-cooling wall 22 in radiant section 20a two steel pipes 221 between gap location arrange for air nozzle 50.As shown in Figure 2, when the gap between two adjacent steel pipes 221 is less, directly two steel pipes 221 can be carried out local bending and process.
Claims (5)
1. the smoke processing system of a top blast stove, comprise top blast stove (10) and waste heat boiler (20), the exhaust opening (11) at top blast stove (10) top is communicated with by flue (30) with the gas approach (21) waste heat boiler (20) being positioned at radiant section (20a) front end, it is characterized in that: the straight tube that described flue (30) is oblique layout, the upside tube wall of flue (30) is provided with fuel nozzle (40), the spray material port of fuel nozzle (40) is inserted in the tube chamber of flue (30).
2. the smoke processing system of top blast stove according to claim 1, is characterized in that: the furnace wall of described waste heat boiler (20) is provided with the air nozzle (50) spraying into air in the burner hearth of radiant section (20a).
3. the smoke processing system of top blast stove according to claim 1 and 2, is characterized in that: on the upside tube wall of described flue (30), interval is furnished with 2-3 fuel nozzle (40).
4. the smoke processing system of top blast stove according to claim 2, is characterized in that: described air nozzle (50) is arranged on the furnace wall, both sides of upper, close radiant section (20a) front end of waste heat boiler (20).
5. the smoke processing system of top blast stove according to claim 4, is characterized in that: be furnished with 2-3 air nozzle (50) near the Shang Jun interval, furnace wall, both sides of radiant section (20a) front end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520050541.5U CN204438825U (en) | 2015-01-23 | 2015-01-23 | The smoke processing system of top blast stove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520050541.5U CN204438825U (en) | 2015-01-23 | 2015-01-23 | The smoke processing system of top blast stove |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204438825U true CN204438825U (en) | 2015-07-01 |
Family
ID=53606679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520050541.5U Withdrawn - After Issue CN204438825U (en) | 2015-01-23 | 2015-01-23 | The smoke processing system of top blast stove |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204438825U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104613783A (en) * | 2015-01-23 | 2015-05-13 | 铜陵有色金属集团股份有限公司金冠铜业分公司 | Flue gas treatment system for top-blowing furnace |
-
2015
- 2015-01-23 CN CN201520050541.5U patent/CN204438825U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104613783A (en) * | 2015-01-23 | 2015-05-13 | 铜陵有色金属集团股份有限公司金冠铜业分公司 | Flue gas treatment system for top-blowing furnace |
| CN104613783B (en) * | 2015-01-23 | 2017-03-15 | 铜陵有色金属集团股份有限公司金冠铜业分公司 | The smoke processing system of top blast stove |
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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: 20150701 Effective date of abandoning: 20171114 |
|
| AV01 | Patent right actively abandoned |