CN202208738U - Multifunctional spraying device for primary smoke hood mouth of convertor - Google Patents
Multifunctional spraying device for primary smoke hood mouth of convertor Download PDFInfo
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- CN202208738U CN202208738U CN2011202297372U CN201120229737U CN202208738U CN 202208738 U CN202208738 U CN 202208738U CN 2011202297372 U CN2011202297372 U CN 2011202297372U CN 201120229737 U CN201120229737 U CN 201120229737U CN 202208738 U CN202208738 U CN 202208738U
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- converter
- flue gas
- gas
- water
- spray device
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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
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Abstract
The utility model provides a spraying device for a primary smoke hood mouth of a convertor. The spraying device is arranged on the smoke hood and comprises annular combination shower pipes, a water supply pipeline, an air supply pipeline, nozzles, a water supply control unit and an air supply control unit, wherein the annular combination shower pipes are arranged at the periphery of the smoke hood; one end of the water supply pipeline is connected with water source, and the other end of the water supply pipe is connected with the annular combination shower pipes; one end of the air supply pipeline is connected with air source, and the other end of the air supply pipeline is connected with the annular combination shower pipes; nozzles are arranged on the annular combination shower pipes; the water supply control unit is connected with the water supply pipe to control the water supply of the water supply pipe; and the air supply control unit is connected with the supply air pipe line to control the air supply of the air supply pipe. With the adoption of the spraying device, the collection efficiency of the smoke hood is improved; meanwhile, overmuch air can be prevented from being sucked, so that the content of CO in the coal gas is increased; and the phenomenon of water leakage, steel slag sticking and the like of the equipment can be reduced.
Description
Technical field
The utility model relates to metallurgy environment protection field, and specifically, the utility model relates to a kind of multifunctional spray device that is used for a flue gas petticoat pipe of converter mouth.
Background technology
Can produce the great amount of high-temperature ash-laden gas in the converter production process, these flue gases can not directly be discharged in the atmosphere.Method relatively more commonly used at present is to adopt the movable gas hood method to collect these flue gases, in the coal-gas recovering phase, adopts and falls the cover operation, lifts petticoat pipe in non-payback period.Yet how movable gas hood captures flue gas effectively, does not simultaneously suck too much air again in case non-return is received the reduction of CO content in the coal gas is a great problem during the converter gas dedusting is reclaimed always.Adopting the more satisfactory effect of movable gas hood operation is that rate of combustion is controlled between the 0.08-0.1; But this control is the comparison difficulty, and when controlling badly, rate of combustion can increase to 0.2-0.3; A large amount of air are inhaled into petticoat pipe, have increased flue-gas temperature and exhaust gas volumn.
For addressing this problem, can also adopt the nitrogen encapsulation technique, promptly at petticoat pipe mouth winding-up compressed nitrogen sealing petticoat pipe mouth.Though nitrogen envelope effect is more satisfactory, the nitrogen consumption is up to 15-20Nm
3/ t has increased cost greatly, so fewer at present employing nitrogen envelope method solves this problem.
In addition, work in the high ambient temperature because revolving furnace fume hood and fire door mechanical means are in very for a long time, and in the process of bessemerizing, also splash can occur, can cause phenomenons such as these equipment leak, steel bonding slag, increased the apparatus maintenance amount.
The utility model content
As stated, the purpose of the utility model is to provide a flue gas petticoat pipe of a kind of converter mouth spraying plant, improves the collection efficiency of petticoat pipe, prevents to suck too much air simultaneously, improves the content of CO in the coal gas.
According to above-mentioned purpose, the utility model provides a flue gas petticoat pipe of a kind of converter mouth spraying plant, and said spraying plant is arranged on the said flue gas petticoat pipe, and said spraying plant comprises:
Annular combination shower is arranged on the said petticoat pipe excircle;
Water-supply line, an end connects the water source, and the other end links to each other with said annular combination shower;
Supply air line, an end connects source of the gas, and the other end links to each other with said annular combination shower;
Nozzle is arranged on the said annular combination shower;
The water supply control unit links to each other with said water-supply line, is used to control the water supply of water-supply line; And
The air feed control unit links to each other with said supply air line, is used to control the air feed of supply air line.
In a flue gas petticoat pipe of above-mentioned converter mouth spraying plant, said annular combination shower has many groups, is arranged on the said petticoat pipe excircle with the concentric(al) circles form.
In a flue gas cover mouth of above-mentioned converter spraying plant, said nozzle is the two-fluid gas-atomizing nozzle.
In a flue gas cover mouth of above-mentioned converter spraying plant, said nozzle comprises blowing nozzle and pressure atomized fog jet.
In a flue gas cover mouth of above-mentioned converter spraying plant, the diameter of the atomizing particle of said two-fluid gas-atomizing nozzle water spray is at the 50-300 micron.
In a flue gas cover mouth of above-mentioned converter spraying plant, the diameter of the atomizing particle of said pressure atomized fog jet water spray is at the 50-300 micron.
In a flue gas cover mouth of above-mentioned converter spraying plant, said source of the gas is one of nitrogen, carbonic acid gas, compression flue gas or pressurized air or their combination.
In a flue gas cover mouth of above-mentioned converter spraying plant, the pressure of said source of the gas is the 0.3-0.5 MPa.
In a flue gas cover mouth of above-mentioned converter spraying plant, said source of the gas is a steam.
In a flue gas cover mouth of above-mentioned converter spraying plant, the pressure of said steam is the 0.5-0.8 MPa.
As stated,, improved the collection efficiency of petticoat pipe, prevented to suck too much air simultaneously, improved the content of CO in the coal gas owing on the converter gas cover, be provided with the spraying plant of the utility model.On the other hand, used the spraying plant of the utility model, can also reduce the drainage of equipment, phenomenons such as steel bonding slag.
Description of drawings
Fig. 1 shows the structural representation of a flue gas petticoat pipe of the converter mouth multifunctional spray device of the utility model.
Description of reference numerals
The 1--nozzle
2--annular combination shower
The 3A--water-supply line
The 3B--supply air line
The 5--feed opening
6--is petticoat pipe fixedly
The 7--movable gas hood
The 8--converter oxygen gun
The 9--converter
The 10--bottom blowing system
11A--water supply control unit
11B--air feed control unit
Embodiment
See also Fig. 1, converter oxygen gun 8 extend into the converter 9 from the converter mouth among Fig. 1, adopts the mode of top blast to be blown into oxygen to converter 9.The bottom of converter 9 is provided with bottom blowing system 10, and bottom blowing system 10 is blown into Ar/N in converter 9
2Fire door place in converter 9 is provided with movable gas hood 7, above movable gas hood 7, is provided with fixedly petticoat pipe 6, fixedly offers feed opening 5 on the petticoat pipe 6, has constituted to use petticoat pipe to collect the converter system of converter gas.
The utility model is set up a multifunctional spray device on the basis of this structure, comprising: annular combination shower 2 is arranged on the excircle of movable gas hood 7.Annular combination shower 2 can be provided with one group as required, and many groups (only showing one group structure among Fig. 1) also can be set.For many groups of annular combination showers, adopt with concentrically ringed arranged in form respectively on the excircle of movable gas hood 7.
The multifunctional spray device of the utility model also comprises water-supply line 3A and supply air line 3B, links to each other with annular combination shower 2 respectively, is used for to annular combination shower 2 water and gas being provided.The other end of water-supply line 3A and supply air line 3B then is connected water source and source of the gas (not shown) respectively.In an embodiment of the utility model, source of the gas can adopt one of nitrogen, carbonic acid gas, compression flue gas or pressurized air, also can be the combination of these sources of the gas, and the preferable value of the pressure of source of the gas is the 0.3-0.5 MPa.In another embodiment of the utility model, source of the gas can be selected steam, and preferably, its pressure preferred values is the 0.5-0.8 MPa.
On annular combination shower 2, be provided with nozzle 1.Nozzle 1 is used for the gas or the liquid ejection that flow in the annular combination shower 2.In an embodiment of the utility model, nozzle 1 can adopt the two-fluid gas-atomizing nozzle.In another embodiment of the utility model, nozzle 1 also can adopt the mode of blowing nozzle and pressure atomized fog jet combination.Blowing nozzle is used to spray gas, and pressure atomized fog jet is used to spray liquid.Preferably, the atomizing of a two-fluid gas-atomizing nozzle or pressure atomized fog jet ejection material diameter is in the scope of 50-300 micron.
See also Fig. 1 again, the multifunctional spray device of the utility model also comprises water supply control unit 11A and air feed control unit 11B.Water supply control unit 11A is connected on the water-supply line 3A, and its effect is the water supply of control water-supply line 3A.For example as required can be through being arranged on the valve open on the pipeline or closing water-supply line.Air feed control unit 11B is connected on the supply air line 3B, and its effect is the air feed of control supply air line 3B.For example as required can be through being arranged on the valve open on the pipeline or closing supply air line.
The principle of work of the spraying plant of the utility model is following: when after converter 9 is reinforced, forwarding the blowing position to and beginning down the oxygen rifle, open water-supply line 3A by water supply control unit 11A, make nozzle spray a small amount of water smoke, with cooling apparatus.Simultaneously, air feed control unit 11B opens supply air line 3B, makes nozzle ejection gas, produces gas curtain, to prevent sucking too much air in the petticoat pipe, helps improving carbon monoxide content in the flue gas like this, reclaims with the limit that realizes coal gas of converter.
After oxygen gun blowing for some time (approximate number minute), carbon begins oxidation, and malleation can appear in the petticoat pipe mouth smolders, at this moment; Can add the water yield of giant ejection through water supply control unit 11A control, the moment contraction of high-temperature flue gas volume is reduced; The flue gas of emerging is cooled off and shrinks,, also can remove most of dust simultaneously so that dust-removal system is collected; Just can adjust the final dusting system during the oxygen blast like this, reduce exhaust smoke level, have effects of energy saving and emission reduction.
As stated; In the utility model,, realized effectively: be the quick dry type transpiration cooling that malleation realizes flue gas when higher 1) in flue gas pressures through adopting the mode of the thin water smoke of spray; The flue gas volume systolic pressure is reduced, and reduce the secondary flue gas amount that the oxygen blast phase produces; 2) the too much air of then isolated suction when flue gas pressures is negative pressure is controlled at below 0.03 rate of combustion, reduces one time exhaust gas volumn, improves RECOVERY OF CONVERTER GAS amount and calorific value; 3) suitably cool off petticoat pipe and fire door equipment, minimizing is leaked; 4) reduce fire door steel bonding slag.
Claims (10)
1. a flue gas petticoat pipe of converter mouth multifunctional spray device, said spraying plant is arranged on the said flue gas petticoat pipe, it is characterized in that, and said spraying plant comprises:
Annular combination shower is arranged on the said petticoat pipe excircle;
Water-supply line, an end connects the water source, and the other end links to each other with said annular combination shower;
Supply air line, an end connects source of the gas, and the other end links to each other with said annular combination shower;
Nozzle is arranged on the said annular combination shower;
The water supply control unit links to each other with said water-supply line, is used to control the water supply of water-supply line; And
The air feed control unit links to each other with said supply air line, is used to control the air feed of supply air line.
2. a flue gas petticoat pipe of converter as claimed in claim 1 mouth multifunctional spray device is characterized in that, said annular combination shower has many groups, is arranged on the said petticoat pipe excircle with the concentric(al) circles form.
3. according to claim 1 or claim 2 a flue gas cover mouth of converter multifunctional spray device is characterized in that said nozzle is the two-fluid gas-atomizing nozzle.
4. according to claim 1 or claim 2 a flue gas cover mouth of converter multifunctional spray device is characterized in that said nozzle comprises blowing nozzle and pressure atomized fog jet.
5. a flue gas cover mouth of converter as claimed in claim 3 multifunctional spray device is characterized in that, the diameter of the atomizing particle of said two-fluid gas-atomizing nozzle water spray is at the 50-300 micron.
6. a flue gas cover mouth of converter as claimed in claim 4 multifunctional spray device is characterized in that, the diameter of the atomizing particle of said pressure atomized fog jet water spray is at the 50-300 micron.
7. according to claim 1 or claim 2 a flue gas cover mouth of converter multifunctional spray device is characterized in that, said source of the gas is one of nitrogen, carbonic acid gas, compression flue gas or pressurized air or their combination.
8. a flue gas cover mouth of converter as claimed in claim 7 multifunctional spray device is characterized in that the pressure of said source of the gas is the 0.3-0.5 MPa.
9. according to claim 1 or claim 2 a flue gas cover mouth of converter multifunctional spray device is characterized in that said source of the gas is a steam.
10. a gas hood mouth of converter as claimed in claim 9 multifunctional spray device is characterized in that the pressure of said steam is the 0.5-0.8 MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202297372U CN202208738U (en) | 2011-06-30 | 2011-06-30 | Multifunctional spraying device for primary smoke hood mouth of convertor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202297372U CN202208738U (en) | 2011-06-30 | 2011-06-30 | Multifunctional spraying device for primary smoke hood mouth of convertor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202208738U true CN202208738U (en) | 2012-05-02 |
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ID=45988290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202297372U Expired - Fee Related CN202208738U (en) | 2011-06-30 | 2011-06-30 | Multifunctional spraying device for primary smoke hood mouth of convertor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202208738U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113373276A (en) * | 2021-06-30 | 2021-09-10 | 德龙钢铁有限公司 | Smoke suppression device suitable for converter |
| CN114737009A (en) * | 2022-03-14 | 2022-07-12 | 河钢股份有限公司 | Method for controlling nitrogen content in converter gas |
| CN114951631A (en) * | 2022-05-07 | 2022-08-30 | 广东韶钢松山股份有限公司 | Ladle hot repair dust removal device and ladle hot repair dust removal method |
-
2011
- 2011-06-30 CN CN2011202297372U patent/CN202208738U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113373276A (en) * | 2021-06-30 | 2021-09-10 | 德龙钢铁有限公司 | Smoke suppression device suitable for converter |
| CN114737009A (en) * | 2022-03-14 | 2022-07-12 | 河钢股份有限公司 | Method for controlling nitrogen content in converter gas |
| CN114951631A (en) * | 2022-05-07 | 2022-08-30 | 广东韶钢松山股份有限公司 | Ladle hot repair dust removal device and ladle hot repair dust removal method |
| CN114951631B (en) * | 2022-05-07 | 2024-02-06 | 广东韶钢松山股份有限公司 | Ladle hot repair dust removal device and ladle hot repair dust removal method |
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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: 20120502 Termination date: 20200630 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |