CN102878558A - Swirling flow premixing type burner - Google Patents
Swirling flow premixing type burner Download PDFInfo
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- CN102878558A CN102878558A CN2012103384131A CN201210338413A CN102878558A CN 102878558 A CN102878558 A CN 102878558A CN 2012103384131 A CN2012103384131 A CN 2012103384131A CN 201210338413 A CN201210338413 A CN 201210338413A CN 102878558 A CN102878558 A CN 102878558A
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- hole
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- swirl
- cylindrical hole
- gas
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- 238000002485 combustion reaction Methods 0.000 claims abstract description 20
- 239000011449 brick Substances 0.000 claims abstract 23
- 238000002347 injection Methods 0.000 claims description 7
- 239000007924 injection Substances 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 54
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 18
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 12
- 238000006243 chemical reaction Methods 0.000 description 10
- 229910021529 ammonia Inorganic materials 0.000 description 9
- 230000015572 biosynthetic process Effects 0.000 description 8
- 238000009792 diffusion process Methods 0.000 description 8
- 238000003786 synthesis reaction Methods 0.000 description 8
- 239000003245 coal Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 239000003034 coal gas Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 4
- 239000000567 combustion gas Substances 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 4
- 239000003546 flue gas Substances 0.000 description 4
- 239000000779 smoke Substances 0.000 description 4
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 230000036284 oxygen consumption Effects 0.000 description 3
- 230000001131 transforming effect Effects 0.000 description 3
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002737 fuel gas Substances 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 241000156948 Aphantopus hyperantus Species 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- AWAUBADRMJIRAK-UHFFFAOYSA-N azane;methane Chemical compound C.N AWAUBADRMJIRAK-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Images
Abstract
一种旋流预混式燃烧器，包括第一烧嘴砖、第二烧嘴砖、助燃风室、空气旋流器和燃气喷嘴，第一烧嘴砖上设置有中心孔，所述中心孔的上部段与第二烧嘴砖的外轮廓形状和尺寸相匹配，所述中心孔的下部段为上端孔径小于下端孔径的圆锥台形孔，第二烧嘴砖的中心部位设置有预混室，燃气喷嘴为旋流式喷嘴，由喷嘴体和与喷嘴体连接的进气管组成；所述第一烧嘴砖安装在炉体上，所述第二烧嘴砖安装在第一烧嘴砖中，所述空气旋流器位于第二烧嘴砖所设置的预混室的进口处，所述燃气喷嘴与空气旋流器相组合，其喷嘴体位于空气旋流器下方，所述助燃风室安装在炉体上。
A swirl premixed burner, comprising a first burner brick, a second burner brick, a combustion-supporting air chamber, an air swirler and a gas nozzle, the first burner brick is provided with a central hole, and the central hole The upper section of the second burner brick matches the shape and size of the outer contour, the lower section of the central hole is a truncated conical hole with an upper hole diameter smaller than the lower end hole diameter, and the center of the second burner brick is provided with a premixing chamber. The gas nozzle is a swirling nozzle, which consists of a nozzle body and an air inlet pipe connected to the nozzle body; the first burner brick is installed on the furnace body, and the second burner brick is installed in the first burner brick, The air cyclone is located at the entrance of the premixing chamber provided by the second burner brick, the gas nozzle is combined with the air cyclone, and its nozzle body is located under the air cyclone, and the combustion air chamber is installed on the furnace body.
Description
Technical field
The invention belongs to field of combustion technology, particularly a kind of efficiency energy saving burner that uses at industrial furnace (coal synthesis ammonia methane reborner, off-gas, flammable tail gas recycle stove etc.).
Background technology
Industrial furnace is high because of its operating temperature, and Fuel Consumption is large, often becomes the highest machining cell of plant energy consumption.The progress of Energy Saving for Industrial Furnace technology is mainly reflected in two aspects: the one, and flue gas waste heat recovery is as heat medium; The 2nd, the Optimizing Combustion process reduces exhaust smoke level.The former is accepted by industrial quarters, most industrial furnace is all supporting waste-heat recovery device.The latter not yet is subject to the attention of industry, and a lot of industrial furnaces is still continued to use backward combustion technology, and combustion-supporting air quantity is excessive, so that exhaust smoke level increases, causes the emission loss of a large amount of heat energy.Burning is a chemical reaction process, and the combustion-supporting air quantity according to the proportioning of reaction equation is determined is called theoretical air requirement, and corresponding exhaust gas volumn is called amount of theoretical flue gas.For making full combustion of fuel, reality feeds the air capacity of burner greater than theoretical air requirement, and general excessive 10 ~ 30%.Absorb furnace heat when excess air is passed through burner hearth, take corresponding heat during with fume emission out of and lose.Excess air is more, and exhaust smoke level is more, and heat-energy losses is larger.Combustion-supporting air quantity how much be that characteristic by burner determines, relevant with the structure of burner.How to reduce the combustion air consumption, improve the heating efficiency of industrial furnace, key is innovation burning theory, the structure of Optimizing Combustion device.The present invention is directed to the high present situation of domestic certain factory's coal synthesis ammonia conversion section energy consumption, developed a kind of efficient combustion technology, and successful Application has realized the energy-saving and cost-reducing of coal synthesis ammonia conversion process to the large scale industry process units.In fact, the problem that coal synthesis ammonia reburner burner exists is ubiquitous, and the present invention is applicable to the energy-saving combustion process of a large class industrial gas furnace.
The coal synthesis ammonia one-stage converter under 860 ℃ fire box temperature, is synthetic ammonia required hydrogen with the methane conversion in the coal gas take coal gas as fuel.In recent years, factory adopts pressure swing adsorption that coal gas is separated in order to improve resource utilization, and fine gas is used for making product ammonia, and weary gas causes fuel gases calorific value significantly to reduce as the reburner combustion gas.The structure of the original burner of reburner is seen Fig. 9, and gas injection injection air enters burner, burns while mix, and consists of the diffusion combustion pattern.The shortcoming of this burner is that combustion-supporting air quantity is large, and flame is longer.Along with the reduction of calorific value of gas, large quantity of air is taken away the burner hearth heat, causes the reburner bore temperature to reduce, and methane conversion descends, and secondary reformer pure oxygen consumption increases, and the energy consumption of methane conversion significantly rises.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of swirl-flow premixed formula burner is provided, to improve the efficient of combustion process.
Burner of the present invention is the combustion process by swirl-flow premixed combustion mode design.Namely making air and combustion gas carry out appropriateness before burning mixes, to shorten the transmission range of gas molecule in the combustion reaction process, improve the utilization ratio of oxidant, reduce the air intake, thereby fire box temperature is raise, and the thermal loss when reducing tail gas emptying.
Swirl-flow premixed formula burner of the present invention, comprise the first burner block, the second burner block, combustion-supporting air compartment, air cyclone and gas nozzle, be provided with centre bore on the first burner block, outer contour shape and the size of the upper segment of described centre bore and the second burner block are complementary, the lower section of described centre bore is that the aperture, upper end is less than the truncated cone hole in aperture, lower end, the centre of the second burner block is provided with swirl premixing chamber, gas nozzle is swirl jet, is comprised of with the gas inlet pipe that is connected with nozzle body nozzle body; Described the first burner block is installed on the body of heater, described the second burner block is installed in the first burner block, described air cyclone is positioned at the import department of the set swirl premixing chamber of the second burner block, described gas nozzle and air cyclone are combined, its nozzle body is positioned at the air cyclone below, and described combustion-supporting air compartment is installed on the body of heater.
In the above-mentioned swirl-flow premixed formula burner, air cyclone is made of central tube and swirl vane, and swirl vane is at least six, and each swirl vane is installed on the central tube at a distance of equal angles, and with the angle γ of the center line of central tube be 20 ° ~ 40 °.The left surface of described swirl vane, right flank, upper side, downside, middle side are the plane, and its leading flank, trailing flank reach and the joint face of central tube is cambered surface.
In the swirl-flow premixed formula burner of the present invention, the nozzle body of gas nozzle is the assembly of the frustum of a cone cylindrical shell of the cylinder of concentricity line and lower end closed, described cylinder is used for being connected with gas inlet pipe, be provided with at least one circle gas jet orifice around its center line on the described frustum of a cone cylindrical shell, the center line of each gas jet orifice is space line, its orientation is: set up rectangular coordinate system in space take the intersection point M of the center line of gas jet orifice and frustum of a cone barrel outer surface as initial point, the z axle of described rectangular coordinate system in space was the plumb line of initial point, in this rectangular coordinate system, the center line MP of described gas jet orifice and the angle α of z axle are: 120 °＜α＜150 °, the center line of described gas jet orifice on horizontal plane projection line MN and the angle of y axle be: 15 °＜＜45 °.The number of turns of the gas jet orifice that arranges on the frustum of a cone cylindrical shell and the quantity of gas jet orifice and aperture are determined according to the gas flow that employed combustion furnace requires.Cylinder preferably is threaded with the connected mode of air inlet pipe, is provided with the thread segment that is connected with gas inlet pipe at described cylinder inwall.
In the swirl-flow premixed formula burner of the present invention, the set swirl premixing chamber of the second burner block is the cylindrical hole of concentricity line and the assembly in truncated cone hole, the truncated cone hole is positioned under the cylindrical hole, the aperture of its upper end is identical with the aperture of cylindrical hole, and the aperture of its lower end is less than the aperture of cylindrical hole.The preferred following ratio of the size in cylindrical hole, truncated cone hole: the height H of cylindrical hole
2The height H in ﹕ truncated cone hole
1=2.5～3.5 ﹕ 1; The aperture of cylindrical hole
1The aperture of lower end, ﹕ truncated cone hole
2=1.3～1.5 ﹕ 1.
Use swirl-flow premixed formula burner of the present invention, coal gas with certain speed after the ejection of the gas jet orifice of gas nozzle, in set swirl-flow premixed indoor along the counter rotation campaign of the second burner block, air enters set swirl-flow premixed indoor equally along the counter rotation campaign of the second burner block during by air cyclone under the guiding of swirl vane, in equidirectional rotatablely moving, two kinds of gases mix in swirl-flow premixed indoor realization, and mist is from the outlet ejection of swirl premixing chamber and burn.
The present invention has following beneficial effect:
1, use burner of the present invention, efficiency of combustion is high, and flame is shorter, and straight and strong, flame is reddish yellow, and is shinny, no color differnece.
2, use burner of the present invention, the air excess amount of industrial furnace is less, and exhaust smoke level reduces, and heat loss due to exhaust gas reduces, and than using existing diffusion flame burner to reduce air capacity 20%, fire box temperature raises 10%, saves combustion gas 8%.
3, use burner of the present invention, the burner hearth high-temperature region enlarges, and high-temperature flue gas is given full play at whole heating surface and added thermal effect, significantly improves the heat-transfer character of industrial furnace, and rate of heat transfer improves.
Description of drawings
Fig. 1 is the structural representation of swirl-flow premixed formula burner of the present invention;
Fig. 2 is the structural representation of the second burner block and set swirl premixing chamber;
Fig. 3 is the structural representation of air cyclone;
Fig. 4 is the schematic diagram of the swirl vane in the air cyclone;
Fig. 5 is the installation position schematic diagram of swirl vane on central tube;
Fig. 6 is the structural representation of nozzle body;
Fig. 7 is the three-dimensional cutaway view of nozzle body shown in Figure 6;
Fig. 8 is the orientation diagram of gas jet orifice center line;
Fig. 9 is the structural representation of existing diffusion flame burner.
Among the figure, 1-air cyclone (1-1: central tube, 1-2: swirl vane, 1-2-1: left surface, 1-2-2: right flank, 1-2-3: upper side, 1-2-4: downside, 1-2-5: middle side, 1-2-6: leading flank, 1-2-7: trailing flank, the joint face of 1-2-8 and central tube), 2-gas nozzle, 3-swirl premixing chamber, the 4-the second burner block, the 5-the first burner block, 6-combustion-supporting air compartment, 7-body of heater, 8-cylinder, 9-frustum of a cone cylindrical shell, 10-thread segment, 11-gas jet orifice, 12-gas jet orifice center line MP, the intersection point of the center line of M-gas jet orifice and frustum of a cone barrel outer surface (initial point of rectangular coordinate system in space).
The specific embodiment
Also by reference to the accompanying drawings swirl-flow premixed formula burner of the present invention is described further below by embodiment.
Embodiment
In the present embodiment, the structure of swirl-flow premixed burner is made of the first burner block 5, the second burner block 4, combustion-supporting air compartment 6, air cyclone 1 and gas nozzle 2 as shown in Figure 1; The shape of the second burner block 4 and structure are as shown in Figure 2, its outer contour shape is cylindrical, its centre is provided with swirl premixing chamber 3, described swirl premixing chamber 3 is the cylindrical hole of concentricity line and the assembly in truncated cone hole, the truncated cone hole is positioned under the cylindrical hole, the height H of cylindrical hole
2The height H in ﹕ truncated cone hole
1=3 ﹕ 1; The aperture of cylindrical hole
1The aperture of lower end, ﹕ truncated cone hole
2=1.4 ﹕ 1; The shape of the first burner 5 and the structure as shown in Figure 1, its outer contour shape is cylindrical, outer contour shape and the size of the upper segment of its centre bore and the second burner 4 are complementary, the lower section of its centre bore is that the aperture, upper end is less than the truncated cone hole in aperture, lower end; Gas nozzle 2 is swirl jet, formed by nozzle body and the gas inlet pipe that is threaded with nozzle body, the shape of described nozzle body and structure are such as Fig. 6, shown in Figure 7, assembly for the frustum of a cone cylindrical shell 9 of the cylinder 8 of concentricity line and lower end closed, described cylinder 8 is used for being connected with gas inlet pipe, its inwall is provided with the thread segment 10 that is connected with gas inlet pipe, be provided with two circle gas jet orifices 11 around its center line on the described frustum of a cone cylindrical shell 9, wherein, 20 spray orifices are arranged on the great circle, 16 spray orifices are arranged on the ringlet, these holes evenly distribute on around two circumference of frustum of a cone cylindrical shell center line, the aperture of each gas jet orifice is identical, be 9 mm, the center line of each gas jet orifice is the space line (see figure 8), its orientation is: set up rectangular coordinate system in space take the intersection point M of the center line of gas jet orifice and frustum of a cone cylindrical shell 9 outer surfaces as initial point, the z axle of described rectangular coordinate system in space was the plumb line of initial point, in this rectangular coordinate system, the center line MP of described gas jet orifice and the angle α of z axle are 135 °, the center line of described gas jet orifice on horizontal plane projection line MN and the angle of y axle be 30 °; The shape of air cyclone 1 and structure are as shown in Figure 3, consisted of by central tube 1-1 and swirl vane 1-2, described central tube 1-1 is pipe, the shape of described swirl vane 1-2 as shown in Figure 4, its left surface 1-2-1, right flank 1-2-2, upper side 1-2-3, downside 1-2-4, middle side 1-2-5 are the plane, its leading flank 1-2-6, trailing flank 1-2-7 reach and the joint face 1-2-8 of central tube is cambered surface, swirl vane is eight, each swirl vane is installed on the central tube at a distance of equal angles, and with the angle γ of the center line of central tube be 30 ° of (see figure 5)s;
The installation site of each member and combination be as shown in Figure 1: the first burner block 5 is installed on the body of heater 7, the second burner block 4 is installed in the first burner block, air cyclone 1 is positioned at the import department of the set swirl premixing chamber of the second burner block 4, its central tube is sleeved on the air inlet pipe of gas nozzle 2 tops, the nozzle body of gas nozzle 2 adopts with described air inlet pipe and is threaded, be positioned at air cyclone 1 below, combustion-supporting air compartment 6 is installed on the body of heater, and the first burner block 5 and the second burner block 4 are enclosed in its chamber, and the inlet end of the air inlet pipe of gas nozzle 2 is positioned at outside the combustion-supporting air compartment.
Application examples
China factory 300,000 t/a coal synthesis ammonia one-stage converters use diffusion flame burner (structure is seen Fig. 9), can be to 450,000 t/a through transforming expansion, owing to adopt pressure swing adsorption that coal gas is separated, with fine gas for the synthesis of ammonia, weary gas is as the one-stage converter combustion gas, and fuel gases calorific value is by the 3300kcal/Nm before transforming
3Be down to 2200 kcal/Nm
3Cause the one-stage converter fire box temperature to reduce (860 ℃ of design temperatures, actual temperature is less than 800 ℃), the process gas outlet temperature descends, and (design temperature is 730 ℃, actual temperature is less than 700 ℃), methane conversion decline (one-stage converter outlet methane concentration is elevated to 17% by 6% before transforming); The pure oxygen consumption of secondary reformer increases, and the emptying heat loss increases (exhaust gas temperature is increased to 220 ℃ from 200 ℃), and the conversion process energy consumption significantly increases.
Test with the diffusion flame burner that the burner of embodiment 1 described structure is replaced in the above-mentioned coal synthesis ammonia device, result of the test shows:
(1) burner of the present invention is compared with existing diffusion flame burner, and the length of flame shortens, and about 1.5 m, flame rigidity is good, and is straight and strong; Existing diffusion flame burner flame length is 2 ~ 2.5 m, and flame is not straight and unstable.
(2) burner flame color of the present invention is reddish yellow, and is shinny, the burner opening no color differnece, and combustion position is with the air capacity sensitive; Existing diffusion flame burner flame color is blue, and burner opening has aberration and dimness, and combustion position changes insensitive with air capacity.
(3) heat-transfer character of one-stage converter is significantly improved, and the high-temperature region enlarges, and high-temperature flue gas is given full play at whole heating surface and added thermal effect, and rate of heat transfer obviously improves.
(4) one-stage converter fire box temperature and process gas outlet temperature all reach designing requirement, and methane conversion improves 1%, and secondary reformer pure oxygen consumption reduces by 300 Nm
3/ h, exhaust gas temperature reduces by 20 ℃, increases hydrazine yield and reaches 5600t/a.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210338413.1A CN102878558B (en) | 2012-09-13 | 2012-09-13 | Swirling flow premixing type burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210338413.1A CN102878558B (en) | 2012-09-13 | 2012-09-13 | Swirling flow premixing type burner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102878558A true CN102878558A (en) | 2013-01-16 |
| CN102878558B CN102878558B (en) | 2015-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210338413.1A Expired - Fee Related CN102878558B (en) | 2012-09-13 | 2012-09-13 | Swirling flow premixing type burner |
Country Status (1)
| Country | Link |
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| CN (1) | CN102878558B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103900083A (en) * | 2014-04-21 | 2014-07-02 | 佘万强 | Fuel gas burner used for glass melting furnace |
| CN106152131A (en) * | 2015-04-27 | 2016-11-23 | 鞍钢股份有限公司 | A kind of experimental furnace burner |
| CN110777265A (en) * | 2019-12-02 | 2020-02-11 | 江西铜业股份有限公司 | Concentrate nozzle of cyclone diffusion type flash furnace |
| CN112240547A (en) * | 2019-07-16 | 2021-01-19 | 宁波方太厨具有限公司 | Kitchen range ejector |
| CN112555830A (en) * | 2020-12-25 | 2021-03-26 | 华帝股份有限公司 | Gas nozzle, combustor and gas cooker using same |
| CN112762445A (en) * | 2021-01-19 | 2021-05-07 | 河北安然通用设备有限公司 | Premixing burner |
| CN112815311A (en) * | 2021-02-03 | 2021-05-18 | 浙江南方锅炉有限公司 | Hollow conical swirling flame low-nitrogen gas burner |
| CN114321920A (en) * | 2020-09-29 | 2022-04-12 | 新疆天运化工有限公司 | Novel reformer nozzle |
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| JPH10160123A (en) * | 1996-11-29 | 1998-06-19 | Sanyo Electric Co Ltd | Initial mixing type planar flame burner |
| CN2285419Y (en) * | 1996-06-25 | 1998-07-01 | 冶金工业部重庆钢铁设计研究院 | Low nitrogen oxide flame-adjustable burner |
| JP2003269704A (en) * | 2002-03-14 | 2003-09-25 | Osaka Gas Co Ltd | Premixed combustion burner |
| CN201944851U (en) * | 2011-01-28 | 2011-08-24 | 鞍山普贝达科技有限公司 | Double-cyclone oxygen-enriched flat-flame burner |
| CN202852814U (en) * | 2012-09-13 | 2013-04-03 | 四川大学 | Rotational flow premix type combustor |
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2012
- 2012-09-13 CN CN201210338413.1A patent/CN102878558B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2285419Y (en) * | 1996-06-25 | 1998-07-01 | 冶金工业部重庆钢铁设计研究院 | Low nitrogen oxide flame-adjustable burner |
| JPH10160123A (en) * | 1996-11-29 | 1998-06-19 | Sanyo Electric Co Ltd | Initial mixing type planar flame burner |
| JP2003269704A (en) * | 2002-03-14 | 2003-09-25 | Osaka Gas Co Ltd | Premixed combustion burner |
| CN201944851U (en) * | 2011-01-28 | 2011-08-24 | 鞍山普贝达科技有限公司 | Double-cyclone oxygen-enriched flat-flame burner |
| CN202852814U (en) * | 2012-09-13 | 2013-04-03 | 四川大学 | Rotational flow premix type combustor |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103900083A (en) * | 2014-04-21 | 2014-07-02 | 佘万强 | Fuel gas burner used for glass melting furnace |
| CN106152131A (en) * | 2015-04-27 | 2016-11-23 | 鞍钢股份有限公司 | A kind of experimental furnace burner |
| CN112240547A (en) * | 2019-07-16 | 2021-01-19 | 宁波方太厨具有限公司 | Kitchen range ejector |
| CN110777265A (en) * | 2019-12-02 | 2020-02-11 | 江西铜业股份有限公司 | Concentrate nozzle of cyclone diffusion type flash furnace |
| CN110777265B (en) * | 2019-12-02 | 2024-02-20 | 江西铜业股份有限公司 | Concentrate nozzle of cyclone diffusion type flash furnace |
| CN114321920A (en) * | 2020-09-29 | 2022-04-12 | 新疆天运化工有限公司 | Novel reformer nozzle |
| CN112555830A (en) * | 2020-12-25 | 2021-03-26 | 华帝股份有限公司 | Gas nozzle, combustor and gas cooker using same |
| CN112762445A (en) * | 2021-01-19 | 2021-05-07 | 河北安然通用设备有限公司 | Premixing burner |
| CN112762445B (en) * | 2021-01-19 | 2021-10-15 | 河北安然通用设备有限公司 | Premixing burner |
| CN112815311A (en) * | 2021-02-03 | 2021-05-18 | 浙江南方锅炉有限公司 | Hollow conical swirling flame low-nitrogen gas burner |
| CN112815311B (en) * | 2021-02-03 | 2022-05-13 | 浙江南方锅炉有限公司 | Hollow conical swirling flame low-nitrogen gas burner |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102878558B (en) | 2015-04-08 |
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