CN108800119A - A kind of smelting furnace undercurrent spray combustion device - Google Patents
A kind of smelting furnace undercurrent spray combustion device Download PDFInfo
- Publication number
- CN108800119A CN108800119A CN201810813411.0A CN201810813411A CN108800119A CN 108800119 A CN108800119 A CN 108800119A CN 201810813411 A CN201810813411 A CN 201810813411A CN 108800119 A CN108800119 A CN 108800119A
- Authority
- CN
- China
- Prior art keywords
- combustion
- nozzle head
- supporting gas
- undercurrent
- fuel
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D1/00—Burners for combustion of pulverulent fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/48—Nozzles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/72—Safety devices, e.g. operative in case of failure of gas supply
- F23D14/78—Cooling burner parts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D99/00—Subject matter not provided for in other groups of this subclass
- F27D99/0001—Heating elements or systems
- F27D99/0033—Heating elements or systems using burners
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
- F23D2900/21—Burners specially adapted for a particular use
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D99/00—Subject matter not provided for in other groups of this subclass
- F27D99/0001—Heating elements or systems
- F27D99/0033—Heating elements or systems using burners
- F27D2099/0036—Heating elements or systems using burners immersed in the charge
Abstract
The invention discloses a kind of smelting furnace undercurrent spray combustion device, including nozzle head, back seat and pipe fitting, nozzle head and the front and back connection of back seat；Nozzle head is equipped with fuel channel and combustion-supporting gas channel, it is additionally provided with water cooling pipe laying, back seat is equipped with the fuel channel with nozzle head fuel passage, it is additionally provided with the combustion-supporting gas distributor chamber being connected to combustion-supporting gas channel, pipe fitting is connected to the side wall of combustion-supporting gas distributor chamber, by pipe fitting to inputting combustion-supporting gas in combustion-supporting gas distributor chamber；In melt, fuel and combustion-supporting gas are spurted into inside melt simultaneously from nozzle head for nozzle head subduction, and vigorous combustion generates high temperature and energy vigorous agitation melt, accelerates chemical reaction.The present apparatus has the advantage for integrating combustion heat supplying fusing, melt agitation and Atmosphere Control, so smelting efficiency can be improved.Nozzle head carries water cooling pipe laying, is cooled down to nozzle head by water cycle, can lower the internal temperature of nozzle head significantly, to make the service life of nozzle head greatly prolong.
Description
Technical field
The invention belongs to Metal Melting field, specially a kind of smelting furnace undercurrent spray combustion device.
Background technology
During bath smelting, melt temperature is generally at 1000 DEG C or more.Melt may be single-phase melt, such as cigarette in stove
It is slag phase to change in stove.May also be multiphase melt, if lead reduction furnace is lead bullion and slag two-phase melt.Bath smelting at present
There are many type, these devices are referred to as spray gun for air feed and burner.
Spray gun is divided into two major classes, and one kind is can only to spray into air or oxygen-enriched air to melt, makes the beans being added in furnace charge
Burning, this kind of spray gun structure is fairly simple, is similar to the air nozzle structure of traditional blast furnace, and only one of which is relatively large in diameter logical
Road, drill rod, which can be inserted, in when blowing out prevents melt from flowing into, and gun head is equipped with water cooling pipe laying, service life at least 3 years with
On, the disadvantage is that fuel cannot be passed through to melt, smelting efficiency is low.It is another kind of in addition to air or oxygen-enriched air can be sprayed into melt
Outside, it can also be passed through fuel, this kind of device is made of spray gun and burner block, and spray gun is inserted into burner block.Spray gun is elongated by multilayer
Casing composition, length generally has 700~800mm, but the diameter of outermost layer casing only has 45-50mm, so the structure of spray gun
It is complicated.The disadvantage is that spray gun and burner block be without water-cooling apparatus, spray gun and the equal scaling loss of burner block are very serious when work, make
It it is only 2~6 months with the service life.It is frequently necessary to blowing out and replaces spray gun and burner block, thus lead to that the production cost increases, operating rate drop
It is low.
Invention content
Fuel and combustion-supporting gas can be sprayed into melt simultaneously the purpose of the present invention is to provide a kind of, improves melting effect
Rate, moreover it is possible to greatly prolong the undercurrent spray combustion device of service life.
This undercurrent spray combustion device provided by the invention, including nozzle head, back seat and pipe fitting, nozzle head and back seat
Front and back connection；Nozzle head is equipped with fuel channel and combustion-supporting gas channel, is additionally provided with water cooling pipe laying, and back seat is equipped with and nozzle head fuel
The fuel channel of channel connection, is additionally provided with the combustion-supporting gas distributor chamber being connected to combustion-supporting gas channel, pipe fitting is connected to combustion-supporting
The side wall of gas distributing chamber, by pipe fitting to inputting combustion-supporting gas in combustion-supporting gas distributor chamber；Nozzle head subduction in melt,
Fuel and combustion-supporting gas are spurted into inside melt simultaneously from nozzle head.
In a kind of embodiment of above-mentioned technical proposal, the nozzle head is cast by fine copper, and fuel channel is located at
The axial centre position of nozzle head, multiple combustion-supporting gas channels are parallel with fuel channel, are distributed in the periphery of fuel channel.
In a kind of embodiment of above-mentioned technical proposal, the water cooling pipe laying is copper pipe, is embedded in combustion-supporting gas in the shape of a spiral
The periphery in body channel.
In a kind of embodiment of above-mentioned technical proposal, the fuel channel of the nozzle head is lined with wear-resistant material body.
In a kind of embodiment of above-mentioned technical proposal, the wear-resistant material body is stainless steel tube or ceramic tube.
In a kind of embodiment of above-mentioned technical proposal, the back seat is made of stainless steel, and fuel channel is located at it
Axial centre position, combustion-supporting gas distributor chamber are located at the periphery of fuel channel, and the nearly nozzle tip of combustion-supporting gas distributor chamber has spray
Stomata, fumarole are connected to the combustion-supporting gas channel of nozzle head.
In a kind of embodiment of above-mentioned technical proposal, the pipe fitting is made of stainless steel, and it is combustion-supporting to be welded in back seat
In the mounting hole of gas distributing chamber side wall.
In a kind of embodiment of above-mentioned technical proposal, after the rear end face center position of the nozzle head has boss insertion
In groove at seat front end center position.
In a kind of embodiment of above-mentioned technical proposal, the rear end of the nozzle head and the front end of back seat pass through flange and spiral shell
It tethers and connects fastening, seal washer is equipped between the connecting end surface of the two.
In melt, fuel and combustion-supporting gas spurt into play inside melt from nozzle head simultaneously for the nozzle head subduction of the present apparatus
Strong burning generates high temperature, and the ore materials being continuously added in stove is made to melt rapidly.The kinetic energy of jet-stream wind makes melt generate simultaneously
Strong agitation, can reinforce the mass-and heat-transfer of melt, accelerate the progress of various chemical reactions.Simultaneously can by adjust combustion-supporting gas and
The ratio of fuel controls the required different atmosphere of smelting process in stove.In short, the present apparatus have collection combustion heat supplying fusing,
Melt stirs and Atmosphere Control is in the advantage of one, so smelting efficiency can be improved.Nozzle head carries water cooling pipe laying, passes through
Water cycle cools down nozzle head, can lower the internal temperature of nozzle head significantly, to make the service life of nozzle head significantly
Extend.
Description of the drawings
Fig. 1 is the schematic cross-sectional view of one embodiment of the invention.
Fig. 2 is the schematic top plan view of Fig. 1.
Fig. 3 is the left view schematic diagram of Fig. 1.
Fig. 4 is the A-A schematic diagrames in Fig. 1.
Specific implementation mode
In conjunction with Fig. 1 to Fig. 4 as can be seen that this smelting furnace undercurrent spray combustion device disclosed in the present embodiment, including
Nozzle head 1, back seat 2 and pipe fitting 3.
The nozzle head 1 of the present embodiment is cast by fine copper, and shape is cone, and its rear end is flange.
There is fuel channel 11 in the axial centre position of nozzle head 1, and multiple help is evenly equipped on the concentric circles of fuel channel periphery
Fire gas passage 12.The aperture in the present embodiment combustion-supporting gas channel 12 is less than the aperture of fuel channel 11.Although being shown in figure
Four combustion-supporting gas channels, but the particular number in combustion-supporting gas channel and pore size are gentle according to the tolerance of required combustion-supporting gas
Flow velocity degree, which calculates, to be determined.
The water cooling pipe laying 13 of nozzle head 1 is copper pipe, and water cooling pipe laying is spirally embedded in the periphery in combustion-supporting gas channel 11,
To increase the length of water cooling pipe laying, ensure water-cooled effect.Water cooling pipe laying 13 is embedded to when nozzle head 1 is cast, and is formed with nozzle head
One entirety.Figure it is seen that the inlet and outlet of water cooling pipe laying 13 are on the flange of 1 rear end of nozzle head.In use, water cooling
It is passed through cold water in pipe laying, is recycled by continuous water to reduce the temperature of nozzle head, so as to greatly prolong the use of nozzle head
Service life.
After nozzle head 1 is cast, it is necessary to require to carry out water pressure test detection according to the making of Copper Water Jacket, logical ball detection, interior peep
The multinomial technical quality detection such as microscopy survey, electronics carrying out flaw detection.
The back seat 2 of the present embodiment is made of stainless steel, is stepped cylindrical body, front end is flange.
There are fuel channel and combustion-supporting gas distributor chamber 21, fuel channel to be located at the axial centre of back seat, combustion-supporting gas in back seat
Body distributor chamber 21 is located at the front periphery of fuel channel.There is the fumarole 22 across flange in the front end of combustion-supporting gas distributor chamber 21.
The quantity and pore size of fumarole 22 are identical as the quantity in 1 combustion-supporting gas channel 12 of nozzle head and aperture.
The pipe fitting 3 of the present embodiment is made of stainless steel, and vertical welding is in the installation of 21 side wall of combustion-supporting gas distributor chamber
Kong Zhong.
It will be seen from figure 1 that longitudinal center line is arranged altogether before and after nozzle head 1 and back seat 2, pass through flange and spiral shell between the two
It tethers and connects fastening.In order to improve leakproofness, the center position of 1 rear end face of nozzle head has boss to be inserted into 2 front end face center of back seat
In groove at position, while seal washer also is set between the joint face of 2 the two of nozzle head 1 and back seat.
After nozzle head 1 and back seat 2 assemble, the fuel passage of the fuel channel and nozzle head 1 of back seat 2, back seat 2
Combustion-supporting gas distributor chamber is connected to by fumarole with the combustion-supporting gas channel of nozzle head 1.The fuel channel rear end of back seat 2 passes through method
Orchid connection fuel -supply pipe, the upper end of pipe fitting 3 passes through flanged joint combustion-supporting gas delivery pipe.
When the present apparatus works, powdered solid fuel (such as fine coal) had both may be used in fuel, can also use gaseous fuel (such as
Natural gas, coal gas, oil liquefied gas).
It, need to be in the fuel channel lining wear-resistant material body of nozzle head, to ensure nozzle head when using fine coal as fuel
Long service life.The present embodiment is using stainless steel tube or ceramic tube as wear-resistant material body.Using fine coal as fuel
When, it is conveyed by nitrogen, ensures safety.
Rich foster air or industrial pure oxygen can be used in combustion-supporting gas.
When the present apparatus works, outlet air flow velocity is preferably 200-300m/s, and gas pressure is preferably 0.1-0.5MPa, specifically
Air velocity and pressure need to be calculated according to melt resistance (melt height, viscosity, density etc.) to be determined.
The operation principle of the present apparatus is as follows：Nozzle head subduction is inside high-temperature fusant.It fuel with certain pressure and helps
Combustion gas body is spurted into from different channels with the high speed of 200-300m/s in high temperature (generally at 1000 DEG C or more) melt, and gas is in height
Warm lower volume expands rapidly 4-5 times, is bubbled diffusion in the melt.Fuel, which enters in melt, to burn rapidly, generate amount of heat and
CO2, CO gases.Simultaneously series of chemical (such as C+O occurs for improve that melt temperature makes newly to be added load melting2=CO2, C+1/
2O2=CO, CO2+ C=2CO, CO+MeO=Me+CO2).The kinetic energy of gas injection makes melt generate strong agitation, accelerates in melt
The mass-and heat-transfer in portion, to accelerate the various chemical reactions inside melt.By adjusting the ratio of oxygen and fuel, control in stove
The required different atmosphere of smelting process.Final effect is exactly to improve smelting efficiency.
Claims (9)
1. a kind of smelting furnace undercurrent spray combustion device, it is characterised in that：It includes nozzle head, back seat and pipe fitting, nozzle
Head and the front and back connection of back seat；Nozzle head is equipped with fuel channel and combustion-supporting gas channel, is additionally provided with water cooling pipe laying, and back seat is equipped with and spray
The fuel channel of mouth fuel passage, is additionally provided with the combustion-supporting gas distributor chamber being connected to combustion-supporting gas channel, and pipe fitting connects
It is connected to the side wall of combustion-supporting gas distributor chamber, by pipe fitting to inputting combustion-supporting gas in combustion-supporting gas distributor chamber；Nozzle head subduction
In melt, fuel and combustion-supporting gas are spurted into inside melt simultaneously from nozzle head.
2. smelting furnace as described in claim 1 undercurrent spray combustion device, it is characterised in that：The nozzle head is poured by fine copper
It casts, fuel channel is located at the axial centre position of nozzle head, and multiple combustion-supporting gas channels are parallel with fuel channel, uniformly distributed
In the periphery of fuel channel.
3. smelting furnace as claimed in claim 1 or 2 undercurrent spray combustion device, it is characterised in that：The water cooling pipe laying is
Copper pipe is embedded in the periphery in combustion-supporting gas channel in the shape of a spiral.
4. smelting furnace as claimed in claim 2 undercurrent spray combustion device, it is characterised in that：The fuel of the nozzle head is logical
Road is lined with wear-resistant material body.
5. smelting furnace as claimed in claim 4 undercurrent spray combustion device, it is characterised in that：The wear-resistant material body is not
Become rusty steel pipe or ceramic tube.
6. smelting furnace as claimed in claim 2 undercurrent spray combustion device, it is characterised in that：The back seat uses stainless steel
It makes, fuel channel is located at its axial centre position, and combustion-supporting gas distributor chamber is located at the periphery of fuel channel, combustion-supporting gas point
Nearly nozzle tip with room has fumarole, fumarole to be connected to the combustion-supporting gas channel of nozzle head.
7. smelting furnace as described in claim 1 or 6 undercurrent spray combustion device, it is characterised in that：The pipe fitting uses
Stainless steel makes, and is welded in the mounting hole of back seat combustion-supporting gas distributor chamber side wall.
8. smelting furnace as described in claim 1 undercurrent spray combustion device, it is characterised in that：The rear end face of the nozzle head
Center position has boss to be inserted into the groove at back seat front end center position.
9. smelting furnace as claimed in claim 8 undercurrent spray combustion device, it is characterised in that：The rear end of the nozzle head and
The front end of back seat is by flange and is bolted fastening, and seal washer is equipped between the connecting end surface of the two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810813411.0A CN108800119A (en) | 2018-07-23 | 2018-07-23 | A kind of smelting furnace undercurrent spray combustion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810813411.0A CN108800119A (en) | 2018-07-23 | 2018-07-23 | A kind of smelting furnace undercurrent spray combustion device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108800119A true CN108800119A (en) | 2018-11-13 |
Family
ID=64077642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810813411.0A Pending CN108800119A (en) | 2018-07-23 | 2018-07-23 | A kind of smelting furnace undercurrent spray combustion device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108800119A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111763833A (en) * | 2020-07-22 | 2020-10-13 | 包头华鼎铜业发展有限公司 | Oxygen-enriched bottom blowing converting furnace for converting liquid copper matte into copper |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB713230A (en) * | 1951-06-19 | 1954-08-04 | Hans Bolliger | Improvements in burners |
| FR1438494A (en) * | 1965-03-31 | 1966-05-13 | Soc Metallurgique Imphy | Burner for industrial furnace with fuel gas and oxygen |
| CN101382387A (en) * | 2008-10-22 | 2009-03-11 | 中国恩菲工程技术有限公司 | Spray gun of side-blown converter for smelting non-ferrous metal |
| CN202166057U (en) * | 2011-07-15 | 2012-03-14 | 马鞍山科达洁能股份有限公司 | Combustion nozzle and coal gasifier |
| CN103453525A (en) * | 2013-09-16 | 2013-12-18 | 广西有色再生金属有限公司 | Oxygen-enriched combustor |
| CN203517796U (en) * | 2013-09-16 | 2014-04-02 | 广西有色再生金属有限公司 | Oxygen-enriched combustor |
| CN203741387U (en) * | 2014-03-21 | 2014-07-30 | 长沙有色冶金设计研究院有限公司 | Multifunctional air nozzle device for oxygen-enriched side-blown smelting furnace |
| CN206648027U (en) * | 2017-03-15 | 2017-11-17 | 中国恩菲工程技术有限公司 | Fuel lance for submerged combustion bath smelting device |
| CN208595540U (en) * | 2018-07-23 | 2019-03-12 | 长沙有色冶金设计研究院有限公司 | A kind of undercurrent atomizer burner |
-
2018
- 2018-07-23 CN CN201810813411.0A patent/CN108800119A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB713230A (en) * | 1951-06-19 | 1954-08-04 | Hans Bolliger | Improvements in burners |
| FR1438494A (en) * | 1965-03-31 | 1966-05-13 | Soc Metallurgique Imphy | Burner for industrial furnace with fuel gas and oxygen |
| CN101382387A (en) * | 2008-10-22 | 2009-03-11 | 中国恩菲工程技术有限公司 | Spray gun of side-blown converter for smelting non-ferrous metal |
| CN202166057U (en) * | 2011-07-15 | 2012-03-14 | 马鞍山科达洁能股份有限公司 | Combustion nozzle and coal gasifier |
| CN103453525A (en) * | 2013-09-16 | 2013-12-18 | 广西有色再生金属有限公司 | Oxygen-enriched combustor |
| CN203517796U (en) * | 2013-09-16 | 2014-04-02 | 广西有色再生金属有限公司 | Oxygen-enriched combustor |
| CN203741387U (en) * | 2014-03-21 | 2014-07-30 | 长沙有色冶金设计研究院有限公司 | Multifunctional air nozzle device for oxygen-enriched side-blown smelting furnace |
| CN206648027U (en) * | 2017-03-15 | 2017-11-17 | 中国恩菲工程技术有限公司 | Fuel lance for submerged combustion bath smelting device |
| CN208595540U (en) * | 2018-07-23 | 2019-03-12 | 长沙有色冶金设计研究院有限公司 | A kind of undercurrent atomizer burner |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111763833A (en) * | 2020-07-22 | 2020-10-13 | 包头华鼎铜业发展有限公司 | Oxygen-enriched bottom blowing converting furnace for converting liquid copper matte into copper |
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