CN203177179U - Oxygen-enriched burner capable of quickly increasing temperature of burner head - Google Patents
Oxygen-enriched burner capable of quickly increasing temperature of burner head Download PDFInfo
- Publication number
- CN203177179U CN203177179U CN2013201470679U CN201320147067U CN203177179U CN 203177179 U CN203177179 U CN 203177179U CN 2013201470679 U CN2013201470679 U CN 2013201470679U CN 201320147067 U CN201320147067 U CN 201320147067U CN 203177179 U CN203177179 U CN 203177179U
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- oxygen
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- gas
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- combustion
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 107
- 239000001301 oxygen Substances 0.000 title claims abstract description 107
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 107
- 239000007789 gas Substances 0.000 claims abstract description 39
- 238000002485 combustion reaction Methods 0.000 claims abstract description 36
- 230000008602 contraction Effects 0.000 claims abstract description 8
- 239000011449 brick Substances 0.000 claims 2
- 244000144985 peep Species 0.000 claims 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 abstract description 7
- 239000003034 coal gas Substances 0.000 description 32
- 229910000831 Steel Inorganic materials 0.000 description 13
- 239000010959 steel Substances 0.000 description 13
- 238000005096 rolling process Methods 0.000 description 10
- 239000007921 spray Substances 0.000 description 10
- 238000002791 soaking Methods 0.000 description 9
- 238000010438 heat treatment Methods 0.000 description 7
- 230000002093 peripheral effect Effects 0.000 description 5
- 210000000689 upper leg Anatomy 0.000 description 5
- 230000000505 pernicious effect Effects 0.000 description 4
- 239000000446 fuel Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000001131 transforming effect Effects 0.000 description 2
- 241000357293 Leptobrama muelleri Species 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 229940038504 oxygen 100 % Drugs 0.000 description 1
- 229940063821 oxygen 21 % Drugs 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000002277 temperature effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
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Classifications
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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
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- Gas Burners (AREA)
Abstract
本实用新型提供一种快速提高炉头温度的富氧烧嘴，富氧烧嘴由氧气导管、煤气导管、空气导管三层套管组成，氧气导管位于烧嘴中心最里层，位于煤气导管内部，氧气导管前端为收缩结构喷口，煤气导管布置在氧气导管外层，煤气导管前端为收缩口结构，煤气喷口为一环缝结构，助燃空气导管布置在烧嘴最外层，即煤气导管的外层，本实用新型采用纯氧与助燃空气分两路供入的结构，氧气导管布置在煤气导管内部，纯氧喷入炉内，利用氧气的较高压力动量带动煤气，将混合气体以较高的速度喷入炉子中心，提高燃烧强度，避免了煤气与氧气燃烧高温集中区，提高了炉温均匀性，而且减少了有害气体的生成量。
The utility model provides an oxygen-enriched burner for rapidly increasing the temperature of the furnace head. The oxygen-enriched burner is composed of three layers of sleeves: an oxygen conduit, a gas conduit, and an air conduit. The oxygen conduit is located in the innermost layer of the center of the burner and inside the gas conduit. , the front end of the oxygen conduit is a contraction structure nozzle, the gas conduit is arranged on the outer layer of the oxygen conduit, the front end of the gas conduit is a shrinkage port structure, the gas nozzle is a circular seam structure, and the combustion air conduit is arranged on the outermost layer of the burner, that is, outside the gas conduit Layer, the utility model adopts the structure that pure oxygen and combustion-supporting air are supplied in two ways, the oxygen conduit is arranged inside the gas conduit, pure oxygen is injected into the furnace, and the high pressure momentum of oxygen is used to drive the gas to drive the mixed gas at a high The speed is sprayed into the center of the furnace to increase the combustion intensity, avoid the high temperature concentration area of gas and oxygen combustion, improve the uniformity of furnace temperature, and reduce the generation of harmful gases.
Description
Technical field
The utility model belongs to heater for rolling steel oxygen-enriched combusting field, is particularly suitable for large-scale heavy slab heater for rolling steel back to be rolled slab intensification oxygen enrichment burner.
Background technology
Heater for rolling steel needs to improve fast furnace temperature in the later stage to be rolled, recovers rolling line production as early as possible.Thermic load die-offs during to be rolled because in the stove, in fact burner fire door seam place tends to suck cold air, to the 1st ~ 2 steel surface temperature, four jiaos of temperature effect maximums particularly, be that restriction recovers rolling key point, the 1st ~ 2 block of steel billet that is positioned at burner can only be returned in the time of many, wasted the energy and material.Adopt conventional burner (air-breathing of oxygen content 21%), end flue temperature improves slower, needs the estimation roll change repair time to estimate the heating-up time in advance.
The patent No. is 92241883.7 utility model patents, disclosed is " furnace head structure of heating furnace ", proposes at the furnace roof near discharge end several flame-change burners to be housed, and is adjusted to flat flame or spherical flame during ordinary production, the rotation thermal current of ejection forms air curtain, stops cold air to suck in the stove; Rolling mill fault with updraft or spherical flame, can will treat that strip plate is warming up to the steel temperature of coming out of the stove rapidly after removing.This is a kind ofly to adopt different burner flame profiles to control the method that steel billet is rapidly heated.
The patent No. is 98252197.9 utility model patents, and disclosed is " high oxygen-enriched burner ", is evenly equipped with the structure of oxygen spout on the burner with on the equidistant same circumference in fuel nozzle ports outer ring.The cartridge periphery is equipped with annular pressure stabilizing cavity between oxygen spout and the oxygen supply pipe.The Oxygen Flow thigh with fuel mix before suck an amount of furnace gas, effectively reduce flame temperature, increased flame kinetic energy, temperature is even in the stove.
In " the metallurgical energy " Vol.30 No.4 " experimental study and the technical Analysis of application oxygen-enriched combusting on the heater for rolling steel " in 2011 literary composition, the characteristics of the multi-form oxygen-enriched burner of in industrial furnace, using have been analyzed.Affirmed that oxygen-enriched burner improves the clear superiority of furnace temperature, fuel saving.
Therefore, for solving the back to be rolled heating furnace problem that is rapidly heated, utilize the abundant oxygen resource of metallurgical works, can improve the principle of flame temperature according to oxygen-enriched combusting, be the oxygen enrichment burner at the conventional burner of heating furnace burner transformation, study rational oxygen enrichment nozzle structure, can reach the purpose that burner is rapidly heated.
Summary of the invention
The purpose of this utility model is to utilize metallurgical works mesohigh oxygen momentum, pure oxygen is arranged in the burner innermost layer, coal gas is in the intermediate layer of burner, combustion air is in outermost, oxygen improves burner and sprays kinetic energy to be higher than the speed ejection of coal gas, increases the combustion intensity of coal gas, realize back to be rolled raising soaking zone furnace temperature fast, recover the target that rolling line is produced as early as possible.
The utility model provides a kind of oxygen enrichment burner arrangement that can improve end flue temperature fast, its characteristics are, the oxygen enrichment burner is by oxygen catheter, gas-pipe line, three layers of sleeve pipe of air conduit are formed, the oxygen enrichment burner is by oxygen catheter, gas-pipe line, three layers of sleeve pipe of air conduit are formed, oxygen catheter is positioned at innermost layer, burner center, be positioned at gas-pipe line inside, the oxygen catheter front end is the contraction structure spout, gas-pipe line is arranged in the oxygen catheter skin, the gas-pipe line front end is the contraction mouth structure, gas port is a circumferential weld structure, the combustion air conduit is arranged in the burner outermost layer, be the skin of gas-pipe line, the front end of combustion air conduit is installed in the guiding device of burner block, is furnished with 6 ~ 10 air ports on the guiding device.
Concrete structure of the present utility model has, and the oxygen catheter end at burner center is equipped with peep-hole.
Concrete structure of the present utility model has, and 6 ~ 10 air ports that are furnished with on the described guiding device are for circular, is evenly distributed on the circumference with the burner centres, and the air port center line becomes 10 ~ 30 ° inside angle with the burner center line.
Because the oxygen pressure height that metallurgical engineering is carried utilizes oxygen than the burner high characteristics of gas pressure, oxygen is arranged in the burner central core, both in gas-pipe line inside.The purpose of this structure is that the oxygen of working as elevated pressures sprays in the stove, produce higher moving head, the Oxygen Flow band that sprays in the stove can be elongated, oxygen concentration is not concentrated in both burner roots of stove side like this, the Oxygen Flow of fair speed can also drive peripheral gas velocity simultaneously, thereby the mixed combustion of coal gas and oxygen can not form the high temperature concentration zones at the burner root, so both can make furnace temperature even, reduced simultaneously because the growing amount of the NOx pernicious gas that high temperature forms; The oxygen catheter end is equipped with peep-hole, can observe gas-fired state in the stove;
For improving the coal gas spouting velocity, the gas-pipe line front end is the contraction mouth structure.The consideration burner organizes high-concentration oxygen to carry out oxygen-enriched combusting, has improved the concentration that combustible component contacts with high oxygen in the coal gas, has strengthened efficiency of combustion, reduced exhaust gas volumn simultaneously, improved furnace temperature, can save the gas consumption amount, gas passage need dwindle in the original structure burner.Therefore, oxygen catheter is arranged in the gas-pipe line, has both dwindled original gas passage area, and coal gas becomes the ejection of circumferential weld shape by an an original real stream burst shape ejection simultaneously, increase the contact area of oxygen in coal gas and center oxygen and the peripheral air, be conducive to completing combustion.
Coal gas is peripheral to be combustion air (containing oxygen 21%) spout, quantity is 6 ~ 10, be evenly arranged on the circumference with the burner centres, make the combustion air ejection back a plurality of a fluid streams of formation and coal gas carry out mixed combustion in the periphery, strengthened mixability, guaranteed the completing combustion of coal gas, the coefficient of excess of burner can reduce, and excess oxygen reduces in the stove.
Characteristics of the present utility model are: oxygen and air are not to be pre-mixed together during oxygen-enriched combusting, but divide two passages to feed; Oxygen catheter is arranged in gas-pipe line inside, puts gas-pipe line and is arranged in the second layer, and the combustion air conduit is arranged in outermost layer.According to the principle that oxygen-enriched combusting can be saved coal gas, original conventional burner gas passage sectional area need dwindle, and therefore oxygen catheter is arranged in original gas-pipe line, has dwindled coal gas and has flowed out area, guarantees the spouting velocity of coal gas; In addition, consider that oxygen-enriched combusting coal gas mixes with bigger oxygen concentration, has accelerated burning, the characteristics that flame will shorten, and Large-scale Heater needs the stove center to keep temperature even, therefore, after certain oxygen enrichment percentage calculating, pure oxygen (containing oxygen 100%) spout is arranged in gas port inside, utilize the pressure more than needed of oxygen to spray from the burner center, form a pure oxygen stream thigh, take oxygen concentration to the stove center, form long uniform temperature interval.Avoid forming the high temperature concentration zones at burner root coal gas and the violent mixed combustion of oxygen, improved temperature uniformity, reduced the formation of NOx pernicious gas simultaneously.Take off fire for avoiding the Oxygen Flow excessive velocities to cause, oxygen spout periphery is the coal gas annular jet, forms coal gas annular stream thigh, has accelerated the mixed combustion speed of coal gas and oxygen, has stablized burning.The oxygen catheter latter end is equipped with peep-hole, can observe burner flame burning state.
The beneficial effects of the utility model are: the structure that adopts pure oxygen and combustion air to divide two-way to feed, oxygen catheter is arranged in gas-pipe line inside, pure oxygen sprays in the stove, utilize the elevated pressures momentum of oxygen to drive coal gas, mist is sprayed into the stove center with higher speed, improve combustion intensity, avoided coal gas and oxygen combustion high temperature concentration zones, improve temperature uniformity, and reduced the growing amount of NOx pernicious gas.Coal gas sprays in the stove with the circumferential weld form, has improved combustion efficiency, plays the smooth combustion effect simultaneously.Combustion air sprays into a plurality of rill thighs in the periphery, is conducive to the completing combustion of burner, can improve end flue temperature fast.The utility model is fit to various metallurgical furnace kilns, ladle baking.
Description of drawings
Fig. 1 is the front view of the utility model burner,
Fig. 2 is the right view of guiding device in the burner block.
Among the figure: 1 burner block, 2 oxygen catheters, 3 oxygen spouts, 4 flame peep-holes, 5 gas-pipe lines, 6 coal gas circumferential weld spouts, 7 air conduits, 8 guiding devices, 9 air porous spouts.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is elaborated:
As shown in the figure, the utility model oxygen enrichment burner is installed in the burner block 1, the oxygen enrichment burner is made up of oxygen catheter 2, gas-pipe line 5,7 three layers of sleeve pipe of air conduit, oxygen catheter 2 is positioned at innermost layer, burner center, be positioned at gas-pipe line inside, the oxygen catheter front end is contraction structure spout 3, gas-pipe line 5 is arranged in the oxygen catheter skin, the gas-pipe line front end is the contraction mouth structure, gas port 6 is a circumferential weld structure, combustion air conduit 7 is arranged in the burner outermost layer, i.e. the skin of gas-pipe line, and the front end of combustion air conduit is installed in the guiding device 8 of burner block 1.Be furnished with 6 ~ 10 air ports 9 on the guiding device, combustion-supporting air flow is by 6 ~ 10 on the guiding device round spout 9 ejections, and 6 ~ 10 air ports are circular, be evenly distributed on the circumference with the burner centres, the circular spout center line of combustion air becomes 10 ° ~ 30 ° inside angle with the burner center line.
Because the oxygen pressure height that metallurgical engineering is carried, utilize oxygen than the burner high characteristics of gas pressure, oxygen is arranged in the burner center, be positioned at the coal gas internal layer, the oxygen of elevated pressures sprays in the stove like this, produce higher moving head, the Oxygen Flow band that sprays in the stove can be elongated, make oxygen concentration not be concentrated in both burner roots of stove side, the Oxygen Flow of fair speed can also drive peripheral gas velocity simultaneously, thereby the mixed combustion of coal gas and oxygen can not form the high temperature concentration zones at the burner root, so both can make furnace temperature even, reduced simultaneously because the growing amount of the NOx pernicious gas that high temperature forms; The oxygen catheter end at burner center is equipped with peep-hole 4, can observe stove internal combustion state.
Gas-pipe line 5 is arranged in the second layer of burner, and for improving the coal gas spouting velocity, the gas-pipe line front end is the contraction mouth structure.The consideration burner organizes high-concentration oxygen to carry out oxygen-enriched combusting, has improved the concentration that combustible component contacts with high oxygen in the coal gas, has strengthened efficiency of combustion, reduced exhaust gas volumn simultaneously, improved furnace temperature, can save the gas consumption amount, gas passage need dwindle in the original structure burner.Oxygen catheter is arranged in the gas-pipe line, making gas port 6 is a circumferential weld structure, both played the effect that the gas passage sectional area guarantees the original spouting velocity of coal gas simultaneously of dwindling, and coal gas goes out to become the ejection of circumferential weld shape by an an original real stream burst spray shape, increase the contact area of oxygen in coal gas and center oxygen and the peripheral air, be conducive to completing combustion.
Because the supravasal air port center line of combustion air becomes 10 ~ 30 ° inside angle with the burner center line, the stream thigh that combustion air ejection back forms a plurality of band certain angles mixes with coal gas, strengthened mixability, guaranteed the completing combustion of coal gas, the coefficient of excess of burner can reduce, and excess oxygen reduces in the stove.Transforming the utility model burner as with certain steel mill's first pair of burner of slab heating furnace soaking zone is example, and air port center line and burner center line angle are 15 °.When stopping rolling 20min, the soaking zone furnace temperature descends 20 ℃, and steel billet temperature descends 20 ℃.After the end to be rolled, soaking zone adopts this burner to carry out oxygen-enriched combusting, and than adopting whole air to burn, the soaking zone furnace temperature can improve about 470 ℃, and steel billet temperature can be brought up to 1200 ℃ of requirement fast in 5min, shortened 50% heat time heating time.
Transforming the utility model burner as with certain steel mill's first pair of burner of slab heating furnace soaking zone in addition is example, and air port center line and burner center line angle are 15 °.When stopping rolling 60min, the soaking zone furnace temperature descends 50 ℃, and steel billet temperature descends 50 ℃.Soaking zone adopts oxygen enrichment burner of the present utility model, and the soaking zone furnace temperature can improve about 300 ℃, and steel billet temperature can be brought up to 1200 ℃ of requirement fast in 8min, shortened 60% heat time heating time.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201470679U CN203177179U (en) | 2013-03-27 | 2013-03-27 | Oxygen-enriched burner capable of quickly increasing temperature of burner head |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201470679U CN203177179U (en) | 2013-03-27 | 2013-03-27 | Oxygen-enriched burner capable of quickly increasing temperature of burner head |
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| CN203177179U true CN203177179U (en) | 2013-09-04 |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103528059A (en) * | 2013-11-12 | 2014-01-22 | 哈尔滨前程科技发展有限公司 | Multifunction substep high-oxygen combustor for industrial furnace |
| CN104266188A (en) * | 2014-10-16 | 2015-01-07 | 陈维汉 | Gas oxygen-enriched supporting premixed swirl-flow combustion device |
| CN104832921A (en) * | 2015-04-15 | 2015-08-12 | 安徽诚铭热能技术有限公司 | Sleeve type dual-guiding burner nozzle |
| CN105778952A (en) * | 2016-03-16 | 2016-07-20 | 烟台大学 | Coal gas denitrification device and method of adjusting coal gas components |
| CN106090914A (en) * | 2016-06-01 | 2016-11-09 | 天津中油锐思技术开发有限责任公司 | Combustion nozzle and injection method thereof |
| CN106402859A (en) * | 2016-10-26 | 2017-02-15 | 上海安可科技股份有限公司 | Pure-oxygen combustor |
| CN107355786A (en) * | 2017-09-04 | 2017-11-17 | 唐山纳川富氧节能技术开发有限公司 | The more level air-distributions of industrial combustion gas kiln are oxygen-enriched with burning burner special |
| CN107923614A (en) * | 2015-09-14 | 2018-04-17 | 大阳日酸株式会社 | Oxygen burner and the operation method of oxygen burner |
| CN108061301A (en) * | 2018-01-23 | 2018-05-22 | 上海云汇环保科技有限公司 | A kind of novel steel ladle baking burner |
| CN108393475A (en) * | 2018-02-08 | 2018-08-14 | 王研 | Bag apparatus and its application method are baked in a kind of polyoxy intelligent temperature control |
| CN109506237A (en) * | 2018-12-04 | 2019-03-22 | 重庆燃控科技有限公司 | A kind of oxygen enriching pure oxygen three uses burner |
| CN111256108A (en) * | 2020-03-17 | 2020-06-09 | 山东钧辰清洁能源科技有限公司 | Novel oxygen-enriched combustion device for gas boiler and installation method and process thereof |
| CN112857054A (en) * | 2020-12-25 | 2021-05-28 | 林和军 | Metallurgical stove multilayer reinforced tuyere |
| CN112944344A (en) * | 2021-02-09 | 2021-06-11 | 鞍钢股份有限公司 | Oxygen jet flow multistage dispersion combustion roaster |
| CN113154382A (en) * | 2021-04-14 | 2021-07-23 | 鞍钢股份有限公司 | Low-NOx combustor and using method thereof |
| CN114535554A (en) * | 2022-02-22 | 2022-05-27 | 重庆燃控科技有限公司 | Multi-fuel oxygen-enriched steel ladle baking system |
-
2013
- 2013-03-27 CN CN2013201470679U patent/CN203177179U/en not_active Expired - Fee Related
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103528059A (en) * | 2013-11-12 | 2014-01-22 | 哈尔滨前程科技发展有限公司 | Multifunction substep high-oxygen combustor for industrial furnace |
| CN104266188A (en) * | 2014-10-16 | 2015-01-07 | 陈维汉 | Gas oxygen-enriched supporting premixed swirl-flow combustion device |
| CN104266188B (en) * | 2014-10-16 | 2016-07-06 | 陈维汉 | Gas oxygen-enriched combustion-supporting premixed swirl combustion device |
| CN104832921A (en) * | 2015-04-15 | 2015-08-12 | 安徽诚铭热能技术有限公司 | Sleeve type dual-guiding burner nozzle |
| CN107923614B (en) * | 2015-09-14 | 2019-04-26 | 大阳日酸株式会社 | Oxygen burner and operation method of oxygen burner |
| CN107923614A (en) * | 2015-09-14 | 2018-04-17 | 大阳日酸株式会社 | Oxygen burner and the operation method of oxygen burner |
| US10422525B2 (en) | 2015-09-14 | 2019-09-24 | Taiyo Nippon Sanso Corporation | Oxygen burner and operation method for oxygen burner |
| CN105778952A (en) * | 2016-03-16 | 2016-07-20 | 烟台大学 | Coal gas denitrification device and method of adjusting coal gas components |
| CN106090914A (en) * | 2016-06-01 | 2016-11-09 | 天津中油锐思技术开发有限责任公司 | Combustion nozzle and injection method thereof |
| CN106090914B (en) * | 2016-06-01 | 2018-05-18 | 中油锐思技术开发有限责任公司 | Combustion nozzle and injection method thereof |
| CN106402859A (en) * | 2016-10-26 | 2017-02-15 | 上海安可科技股份有限公司 | Pure-oxygen combustor |
| CN107355786A (en) * | 2017-09-04 | 2017-11-17 | 唐山纳川富氧节能技术开发有限公司 | The more level air-distributions of industrial combustion gas kiln are oxygen-enriched with burning burner special |
| CN108061301A (en) * | 2018-01-23 | 2018-05-22 | 上海云汇环保科技有限公司 | A kind of novel steel ladle baking burner |
| CN108393475A (en) * | 2018-02-08 | 2018-08-14 | 王研 | Bag apparatus and its application method are baked in a kind of polyoxy intelligent temperature control |
| CN109506237A (en) * | 2018-12-04 | 2019-03-22 | 重庆燃控科技有限公司 | A kind of oxygen enriching pure oxygen three uses burner |
| CN111256108A (en) * | 2020-03-17 | 2020-06-09 | 山东钧辰清洁能源科技有限公司 | Novel oxygen-enriched combustion device for gas boiler and installation method and process thereof |
| CN112857054A (en) * | 2020-12-25 | 2021-05-28 | 林和军 | Metallurgical stove multilayer reinforced tuyere |
| CN112944344A (en) * | 2021-02-09 | 2021-06-11 | 鞍钢股份有限公司 | Oxygen jet flow multistage dispersion combustion roaster |
| CN113154382A (en) * | 2021-04-14 | 2021-07-23 | 鞍钢股份有限公司 | Low-NOx combustor and using method thereof |
| CN113154382B (en) * | 2021-04-14 | 2023-01-17 | 鞍钢股份有限公司 | A kind of low NOx burner and using method |
| CN114535554A (en) * | 2022-02-22 | 2022-05-27 | 重庆燃控科技有限公司 | Multi-fuel oxygen-enriched steel ladle baking system |
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