CN206037015U - Low NOx's oxy -fuel combustion device - Google Patents
Low NOx's oxy -fuel combustion device Download PDFInfo
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- CN206037015U CN206037015U CN201620927751.2U CN201620927751U CN206037015U CN 206037015 U CN206037015 U CN 206037015U CN 201620927751 U CN201620927751 U CN 201620927751U CN 206037015 U CN206037015 U CN 206037015U
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- Prior art keywords
- oxygen
- fuel nozzle
- fuel
- spray pipe
- combustion 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Abstract
The utility model discloses a low NOx's oxy -fuel combustion device, this oxy -fuel combustion device includes: two at least or many fuel nozzles, the fuel nozzle is at the horizontal position interval arrangement, with the first oxygen spray tube of fuel nozzle one -to -one, first oxygen width of nozzle is greater than the diameter of fuel nozzle, spouts in the annulus that oxygen formed between fuel nozzle and first oxygen spray tube, be located fuel nozzle below level or peripheral two or many second oxygen spray tubes arranging, second oxygen spray tube interval arrangement, and one at least or two third oxygen spray tubes, third oxygen spray tube is located the left side and/or the right side of fuel nozzle and second oxygen spray tube. The utility model discloses an oxy -fuel combustion device can effectively improve combustion efficiency and burn -off rate, improves the flame emission rate, reduces the flame temperature, reduces NOx and discharges, reaches and reduces energy consumption and pollution, improves product quality, improves the purpose in kiln life -span.
Description
Technical field
This utility model is related to a kind of all-oxygen combustion device of the High-temp. kilns such as glass, non-ferrous metal metallurgy, iron and steel, especially
It is related to a kind of all-oxygen combustion device of low NOx.
Background technology
There is a large amount of thermal-flame kilns, thermal-flame kiln in the industries such as glass, non-ferrous metal metallurgy, iron and steel, boiler, petrochemical industry
Stove is as using various Fossil fuels, burning produces substantial amounts of pollutant.Natural gas is a kind of fuel of relative clean, with natural
Gas substitutes coal, heavy oil or other fuel, although can reduce to a certain extent SO2 and heavy metal, H2S, fluoride etc. other
The emission level of pollutant, but NOx emission concentration is still of a relatively high.NOx is the important dirt to form atmospheric pollution and haze
One of dye source, and the major pollutants of environment protection control.
During high-temp combustion, the generation of NOx has the mechanism of itself.Based on NOx formation mechenisms in combustion
Research, studies both at home and abroad, develops numerous low-NOx combustors, burner and combustion method.Such as patent CN201534816U
A kind of total oxygen spray gun of burning natural gas is disclosed, rectangular oxygen and natural gas hybrid channel is provided with, purity oxygen passage sets
Put in the lower section of oxygen and natural gas hybrid channel, form Flat-flame.The invention oxygen classification is limited, flame peak temperature
It is high, it is difficult to by NOx reduction.Patent CN102252324A discloses a kind of method of combusting fuel reburning low-nitrogen, mainly should
Used in boiler, the coal dust of conventional fineness is fired again from upper strata burner feeding stove using coal pulverizer and pulverized coal preparation system de-
Nitre, finally carries out after-flame using burnout degree (OFA), realizes the clean combustion method of coal-burning boiler bottom NOx.The patent realize with
Air is that the classification of oxidant multiple spot feeds, but main application and boiler, it is difficult to be applied to the industrial furnaces such as conventional glass, smelting
Kiln.Patent CN101381196 discloses a kind of fuel step adding apparatus of glass melter total oxygen combustion, arranges main fuel pipe, and
In the main fuel tank left and right sides, two secondary cartridges are set, the device can by adjust main burner and two pair cartridges it
Between the fuel quantity that uses, adjust length, the area coverage of flame.
Additionally, patent CN102635856A discloses a kind of petroleum coke powder full oxygen combustor, inner and outer pipes are included, oil
Coke powder is burnt with oxygen mix for fuel, is made coke powder fully burn, is improved coke powder utilization rate.And United States Patent (USP)
US005575637A discloses a kind of flat flame burner of suitable glass furnace, and oxygen and natural gas are in tubaeform premix combustion
Burning room carries out laminar flow, mixing and burning, forms flame coverage rate greatly, the bright natural gas all-oxygen combustion method of flame.
But above-mentioned patent makes oxygen flow out with roughly the same speed with natural gas, and coutroi velocity size, so as to laminar flow is presented, extends
The incorporation time of oxygen and natural gas, the control length of flame and brightness, reduce NOx emission concentration to a certain extent, do not have
The classification of oxygen and fuel is realized, NOx concentration is difficult to further reduce.
Utility model content
This utility model proposes a kind of low NOx, ultra-low NOx emission concentration for solving the problems referred to above of the prior art
All-oxygen combustion device, this utility model device are sprayed into by the classification by fuel and oxygen, formation becomes clear, radiance height,
Flame broad covered area, forms the burning of disperse formula in whole combustion space, significantly reduces existing all-oxygen combustion device and NOx emission is dense
Degree, improves brightness and improves Fire Radiation ability, reducing energy consumption, improves product quality, improves furnace service life.
For achieving the above object, this utility model is employed the following technical solutions：
One side of the present utility model is to provide a kind of all-oxygen combustion device of low NOx, including：
At least two or branched fuel nozzle, the fuel nozzle in horizontal level arranged for interval, to form fuel staging
Feed；
The first oxygen spray pipe one-to-one with the fuel nozzle, first oxygen spray pipe is with diameter greater than the fuel
The diameter of jet pipe, the annulus formed between fuel nozzle described in oxygen Jing and first oxygen spray pipe spray；
Positioned at two or branched second oxygen spray pipe that the fuel nozzle lower horizontal or periphery are arranged, second oxygen
Gas blowout pipe arranged for interval；And
At least one or two trioxid jet pipes, the trioxid jet pipe are located at the fuel nozzle and described the
The left side and/or right side of two oxygen spray pipes.
Further, when the trioxid jet pipe is only one, positioned at the fuel nozzle and second oxygen
The left side or right side of jet pipe, or when the trioxid jet pipe is two, positioned at the fuel nozzle and second oxygen
The left and right sides of gas blowout pipe；Additionally, the trioxid jet pipe can be for being located at the fuel nozzle and described more than both respectively
The left side of the second oxygen spray pipe and/or right positions.
During using this device, percentage that can be with suitable allocation oxygen between first, second and third jet pipe, and
The flow spray regime of fuel and/or oxygen, can effectively improve efficiency of combustion and burn-off rate, improve flameemi ivity, reduce fire
Flame temperature, reduces NOx emission, reduces energy consumption and pollution, improves product quality, improves the purpose of furnace service life.
Further, the fuel nozzle ports of the fuel nozzle be located at hot working face within, the fuel nozzle ports with it is described
Form fuel to be pre-mixed with the oxygen of first oxygen spray pipe, tentatively light a fire and the steady pre-burning fired between hot working face
Room, the length of the precombustion chamber is 1 to 10 times of the fuel nozzle ports diameter of the fuel nozzle, preferably 2-8 times；More preferably
4-6 times.
Further, the hot working face by high-temperature-resistant burner nozzle it is brick into.
Further, the fuel nozzle, the first oxygen spray pipe, the second oxygen spray pipe and trioxid jet pipe lay with
In the hot working face；The fuel nozzle is located in first oxygen spray pipe.
Further, the fuel spray of the fuel nozzle, the first oxygen spray pipe, the second oxygen spray pipe and trioxid jet pipe
Mouth is circular spout.
Further, the precombustion chamber is the vertical channel being vertically installed in the hot working face, or with certain angle
Degree is obliquely installed the ramp way in the hot working face.Specifically, positioned at the combustion of the burner centrage left and right sides
The precombustion chamber that material jet pipe and the first oxygen spray pipe are formed with hot working face can be vertical channel, or the precombustion chamber is in spray
Certain angle is spread in both sides near exit to the left and right respectively, ejects into autgmentability.
Further, second oxygen spray pipe is sprayed for second oxygen with fuel nozzle central axis distance
1 to 50 times of pipe diameter；It is preferred that 1 to 40 times；It is preferred that 1 to 30 times；More preferably 1 to 15 times.
Further, the horizontal range between second oxygen spray pipe is the 2-50 of the second oxygen spray pipe diameter
Times；Preferably 3-20 times.
Further, the spacing between the centrage of the trioxid jet pipe and the immediate fuel nozzle is institute
State fuel nozzle internal diameter 10-500 times；Preferably 20-300 times；Preferably 30-250 times；Preferably 50-200 times；Preferably
80-150 times；More preferably 100-120 times.
Further, it is equipped with the fuel nozzle, the first oxygen spray pipe, the second oxygen spray pipe and trioxid jet pipe
Flow-rate adjustment, distribution and/or switching device；Igniter is provided with the fuel nozzle ports of the fuel nozzle.
Further, the fuel nozzle, the first oxygen spray pipe, the second oxygen spray pipe or trioxid jet pipe is a diameter of
0.5-5mm；Preferably 0.5-3mm；More preferably 1-2mm.
3rd aspect of the present utility model be to provide a kind of all-oxygen combustion device of low NOx in iron and steel, chemical industry, have coloured gold
Application in category smelting, glass or other high-temperature industrial furnaces.
This utility model adopts above-mentioned technical proposal, compared with prior art, has the following technical effect that：
This utility model burner adopts the multiple spot classification of fuel and oxygen to feed, and adjusts each oxygen in actual use
Jet pipe feeds the allocation proportion of oxygen, realizes stable, clear flame, and fuel staging increased flame coverage rate, reduce flame
Peak temperature, it is ensured that the uniformity of flame；While flame is stablized, the high temperature analysis carbon of enhanced fuel strengthens fire to oxygen classification
The radiance of flame and penetration power, improve heating quality；The classification of oxygen feeds, and combustion space fuel nozzle ports are formed about local
Fuel enrichment area, oxygen jet burnt with fuel after being mixed with the combustion tail gas of combustion space again, substantially reduces combustion
The concentration of oxygen when burning reaction, so that reduce the discharge of NOx；This utility model can improve efficiency of combustion and burn-off rate, reduce
Energy consumption and pollution, improve product quality, improve furnace service life.
Description of the drawings
Fig. 1 is a kind of structural representation of the all-oxygen combustion device of low NOx of this utility model；
Fig. 2 is the section of fuel nozzle and the first oxygen spray pipe in a kind of all-oxygen combustion device of low NOx of this utility model
Schematic diagram；
Fig. 3 is arrangement of the fuel nozzle in hot working face in a kind of all-oxygen combustion device of low NOx of this utility model
Schematic diagram；
Fig. 4 is a kind of all-oxygen combustion device of low NOx of this utility model flame structure schematic diagram when in use；
Wherein, 1- fuel nozzles, 11- fuel inlets, 12- fuel channels, 13- fuel nozzle ports, the first oxygen spray pipes of 2-,
The first oxygen intakes of 21-, the first oxygen channels of 22-, 3- the second oxygen spray pipe the second oxygen intakes of 31-, the spray of the second oxygen of 32-
Mouthful, 4- trioxid jet pipes, 5- hot working faces, 6- precombustion chambers, 7- combustion flames.
Specific embodiment
This utility model is described in more detail below by specific embodiment, for a better understanding of this reality
With new, but following embodiments are not intended to limit this utility model scope.
As shown in figure 1, this utility model embodiment provides a kind of all-oxygen combustion device of low NOx, including：At least two
Or branched fuel nozzle 1, in horizontal level arranged for interval, to form fuel staging infeed, fuel nozzle 1 is same for fuel nozzle 1
Arranged for interval on one horizontal plane, to form bigger coverage rate in the horizontal plane, combustion flame broad covered area is heated more equal
Even, heating quality is high；With 1 one-to-one first oxygen spray pipe 2 of fuel nozzle, the first oxygen spray pipe 2 is with diameter greater than fuel spray
The diameter of pipe 1, the annulus formed between oxygen Jing fuel nozzles 1 and the first oxygen spray pipe 2 are sprayed into；Positioned at fuel nozzle 1
Lower section or periphery horizontally disposed two or branched second oxygen spray pipe 3,3 horizontal interval of the second oxygen spray pipe arrangement；And extremely
Few one or two trioxid jet pipes 4, trioxid jet pipe 4 are located at the left side of fuel nozzle 1 and the second oxygen spray pipe 3
And/or right side.When trioxid jet pipe 4 is only one, positioned at fuel nozzle 1 and the left side or the right side of the second oxygen spray pipe 3
Side, or when trioxid jet pipe 4 is two, positioned at fuel nozzle 1 and the left and right sides of the second oxygen spray pipe 3；Additionally, the 3rd
Oxygen spray pipe 4 can also be according to needs of production for more than both, respectively positioned at fuel nozzle 1 and the second oxygen spray pipe 3
Left side and/or right positions.
As shown in Fig. 2 in the burner fuel nozzle 1 fuel nozzle ports 11 positioned at by high-temperature-resistant burner nozzle it is brick into
Within hot working face 5, fuel is formed between fuel nozzle ports 13 and hot working face 5 with Jing the first oxygen intakes 21 and the first oxygen
The oxygen that gas passage 22 is sprayed into is pre-mixed, the precombustion chamber 6 of tentatively igniting and steady combustion, improves fuel temperature, promotes fuel-pyrolysis
With analysis carbon.1 to 10 times for 11 diameter of fuel nozzle ports of fuel nozzle 1 of the length (indentation distance) of the precombustion chamber 6, preferably 2-
8 times；More preferably 4-6 times.The fuel channel 12 of fuel nozzle 1 and fuel nozzle ports 13 are contracted within hot working face 5, a side
The high temperature erosion of face effective protection metal fuel spout and the chemical erosion of stove inner exhaust gas, extend the service life of jet pipe；
In addition, fuel nozzle 1 is contracted within the resistance to material of high temperature, the oxygen that can be fed with the first oxygen spray pipe 2 is pre-mixed, and makes part
Fuel advanced combustion in the resistance to material, keeps combustion flame 7 stable, while partially combusted fuel improves the temperature of fuel mixture
Degree, makes fuel carry out analysis carbon at high temperature, volatilizes carbon black particle, the brightness of the combustion flame 7 of raising and radiance.It is highlighted
Degree flame improves the penetration performance of combustion flame 7, reduces flame peak temperature, contributes to improving heating properties, reduces NOx
Concentration of emission.
As shown in figure 3, precombustion chamber 6 is the vertical channel being vertically installed in hot working face 5, as shown in Fig. 3-a, 3-c；
Or the ramp way being arranged in hot working face is inclined at an angle, as shown in Fig. 3-b.Specifically, positioned at burner
The fuel nozzle 1 of the centrage left and right sides and the first oxygen spray pipe 1 can be vertical with the precombustion chamber 6 that hot working face 5 is formed
Passage, or precombustion chamber the certain angle of both sides diffusion to the left and right is ejected into autgmentability respectively near the ejiction opening, such as pre-burning
Vertical line of the room in ejiction opening Yu hot working face is in 0-60 ° of angle, as shown in Fig. 3-b.
For the infeed rate of accurately control and regulation fuel and oxygen, the combustion rate of fuel is improved, in fuel nozzle 1, first
Flow-rate adjustment, distribution and/or switching device are equipped with oxygen spray pipe 2, the second oxygen spray pipe 3 and trioxid jet pipe 4；And
Igniter is provided with the fuel nozzle ports 11 of fuel nozzle 1.Additionally, with 1 one-to-one first oxygen spray pipe 2 of fuel nozzle
Oxygen intake is interconnected, and forms same oxygen intake, to simplify design.Fuel nozzle 1, the first oxygen spray pipe 2, the second oxygen
The fuel nozzle ports of gas blowout pipe 3 and trioxid jet pipe 4 are circular spout；Fuel nozzle 1, the first oxygen spray pipe 2, the spray of the second oxygen
A diameter of 0.5-5mm of pipe 3 and trioxid jet pipe 4；Preferably 0.7-3mm；More preferably 1-1.5mm.Second oxygen spray pipe 3
With 1 to 50 times that 1 central axis of fuel nozzle distance is 3 diameter of the second oxygen spray pipe；It is preferred that 1 to 40 times；It is preferred that 1 to 30
Times；More preferably 1 to 15 times, oxygen and fuel is first mixed with the tail gas of burning in whole kiln combustion space, reduce combustion
Oxygen concentration and fuel concentration during material burning, substantially reduces 7 temperature of combustion flame and NOx emission concentration.And, the second oxygen
Jet pipe 3 is arranged in the lower section of fuel nozzle 1, makes the integral combustion interval and high-temperature region of whole burner move down, more leans on
The material of nearly heating, away from the arch top of high temperature kiln, which enhances the efficiency of heating surface, while protecting arch top, extends the kiln longevity
Life.Horizontal range between second oxygen spray pipe 3 is 2-50 times of 3 diameter of the second oxygen spray pipe；Preferably 3-20 times；More preferably
For 8-15 times, 10-12 times is more preferably.
Wherein, the level interval between the centrage of trioxid jet pipe 4 and immediate fuel nozzle 1 is fuel nozzle
10-500 times of 1 internal diameter；Preferably 20-300 times；Preferably 30-250 times；Preferably 50-200 times；Preferably 80-150 times；
More preferably 100-120 times, oxygen and fuel is first mixed with the tail gas of burning in whole kiln combustion space, reduce combustion
Oxygen concentration and fuel concentration during material burning, then the disperse formula burning for not having obvious flame is formed in whole kiln space,
The temperature and NOx emission concentration of combustion flame 7 are reduced further.It is embodied as convenience, three times oxygen spout can be arranged
On independent refractory brick or furnace binding, and the implementation result of this patent is not affected.
The use principle of the all-oxygen combustion device of the low NOx of this utility model embodiment is：Supply in fuel nozzle 1 simultaneously
Enter fuel, oxygen is fed in the first oxygen spray pipe 2, the second oxygen spray pipe 3 and trioxid jet pipe 4；By adjusting the first oxygen
Oxygen and the infeed allocation proportion of fuel that gas blowout pipe 2, the second oxygen spray pipe 3 and trioxid jet pipe 4 feed；Or adjustment the
The position of one oxygen spray pipe 2, the second oxygen spray pipe 3 and trioxid jet pipe 4 so that fuel burns completely, realizes the low NOx of fuel
Or the discharge of ultralow NOx concentration, the all-oxygen combustion device of the low NOx 7 structure flame effect of combustion flame when in use, such as Fig. 4
It is shown.
Burner of the present utility model is fed by the multiple spot classification using fuel and oxygen, is adjusted in actual use
The oxygen allocation proportion that first, second, and third oxygen spray pipe 4 feeds, realizes stable, clear flame, and fuel staging increased
Flame coverage rate, reduces flame peak temperature, it is ensured that the uniformity of flame；Oxygen classification, can be effective while flame is stablized
The high temperature analysis carbon of enhanced fuel, strengthens flame radiation performance and penetration power, improves heating quality；The classification of oxygen feeds, combustion
Burn space fuel nozzle ports and be formed about the fuel enrichment area of local, oxygen jet mix with the combustion tail gas of combustion space after again
Burnt with fuel, the concentration of oxygen when substantially reducing combustion reaction, so that reduce the discharge of NOx；Implementing process
In, the position that 4 oxygen of trioxid jet pipe feeds can be adjusted；Meanwhile, can adjust first, second, and third oxygen spray pipe
The 4 oxygen proportion distribution for feeding, it is ensured that fuel burns completely, and realizes certain coefficient of excess.Can be widely applied to glass,
In non-ferrous metal metallurgy or other high temperature furnaces.
Above specific embodiment of the utility model is described in detail, but which has been intended only as example, this practicality is new
Type is not restricted to particular embodiments described above.To those skilled in the art, it is any that this utility model is carried out
Equivalent modifications and substitute also all among category of the present utility model.Therefore, without departing from spirit of the present utility model and model
Enclose lower made impartial conversion and change, should all cover in the range of this utility model.
Claims (10)
1. a kind of all-oxygen combustion device of low NOx, it is characterised in that include：
At least two or branched fuel nozzle, the fuel nozzle is in horizontal level arranged for interval；
The first oxygen spray pipe one-to-one with the fuel nozzle, first oxygen spray pipe is with diameter greater than the fuel nozzle
Diameter, the annulus that formed between fuel nozzle described in oxygen Jing and first oxygen spray pipe sprays；
Positioned at two or branched second oxygen spray pipe that the fuel nozzle lower horizontal or periphery are arranged, the second oxygen spray
Pipe arranged for interval；And
At least one or two trioxid jet pipes, the trioxid jet pipe are located at the fuel nozzle and second oxygen
The left side and/or right side of gas blowout pipe.
2. the all-oxygen combustion device of low NOx according to claim 1, it is characterised in that the fuel spray of the fuel nozzle
Mouth is located within hot working face, forms fuel and spray with first oxygen between the fuel nozzle ports and the hot working face
The oxygen of pipe is pre-mixed, the precombustion chamber of tentatively igniting and steady combustion, and the length of the precombustion chamber is the fuel of the fuel nozzle
1 to 10 times of nozzle diameter.
3. the all-oxygen combustion device of low NOx according to claim 2, it is characterised in that the precombustion chamber is for being vertically arranged
Vertical channel in the hot working face.
4. the all-oxygen combustion device of low NOx according to claim 2, it is characterised in that the precombustion chamber is at a certain angle
The ramp way being obliquely installed in the hot working face.
5. the all-oxygen combustion device of low NOx according to claim 1, it is characterised in that second oxygen spray pipe and institute
Fuel nozzle central axis are stated apart from 1 to 50 times for the second oxygen spray pipe diameter.
6. the all-oxygen combustion device of low NOx according to claim 1, it is characterised in that between second oxygen spray pipe
Horizontal range be 2-50 times of the second oxygen spray pipe diameter.
7. the all-oxygen combustion device of low NOx according to claim 1, it is characterised in that the trioxid jet pipe with most
Spacing between the centrage of the close fuel nozzle is 10-500 times of the fuel nozzle internal diameter.
8. the all-oxygen combustion device of low NOx according to claim 1, it is characterised in that the fuel nozzle, the first oxygen
Flow-rate adjustment, distribution and/or switching device are equipped with jet pipe, the second oxygen spray pipe and trioxid jet pipe.
9. the all-oxygen combustion device of low NOx according to claim 1, it is characterised in that with one a pair of the fuel nozzle
The oxygen intake of the first oxygen spray pipe answered is interconnected, and forms same oxygen intake.
10. the all-oxygen combustion device of low NOx according to claim 1, it is characterised in that the fuel nozzle, the first oxygen
A diameter of 0.5-5mm of gas blowout pipe, the second oxygen spray pipe or trioxid jet pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620927751.2U CN206037015U (en) | 2016-08-23 | 2016-08-23 | Low NOx's oxy -fuel combustion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620927751.2U CN206037015U (en) | 2016-08-23 | 2016-08-23 | Low NOx's oxy -fuel combustion device |
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| Publication Number | Publication Date |
|---|---|
| CN206037015U true CN206037015U (en) | 2017-03-22 |
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ID=58303672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201620927751.2U Active CN206037015U (en) | 2016-08-23 | 2016-08-23 | Low NOx's oxy -fuel combustion device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106090894A (en) * | 2016-08-23 | 2016-11-09 | 翼特新能源科技（上海）有限公司 | The all-oxygen combustion device of a kind of low NOx and combustion method thereof and application |
| TWI821937B (en) * | 2021-03-12 | 2023-11-11 | 美商氣體產品及化學品股份公司 | Furnaces and methods for smelting metal charges |
-
2016
- 2016-08-23 CN CN201620927751.2U patent/CN206037015U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106090894A (en) * | 2016-08-23 | 2016-11-09 | 翼特新能源科技（上海）有限公司 | The all-oxygen combustion device of a kind of low NOx and combustion method thereof and application |
| TWI821937B (en) * | 2021-03-12 | 2023-11-11 | 美商氣體產品及化學品股份公司 | Furnaces and methods for smelting metal charges |
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