CN203177179U - Oxygen enrichment burning nozzle capable of quickly improving temperature of furnace end - Google Patents
Oxygen enrichment burning nozzle capable of quickly improving temperature of furnace end Download PDFInfo
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- 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
- gas
- burner
- guide pipe
- oxygen enrichment
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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 provides an oxygen enrichment burning nozzle capable of quickly improving the temperature of a furnace end. The oxygen enrichment burning nozzle is composed of three sleeves, namely, an oxygen guide pipe, a gas guide pipe, and an air guide pipe. The oxygen guide pipe is located on the innermost layer of the center of the burning nozzle and located inside the gas guide pipe. The front end of the oxygen guide pipe is provided with a spray opening of a contraction structure. The gas guide pipe is arranged on the outer layer of the oxygen guide pipe. The front end of the gas guide pipe is of a contraction opening structure. A gas spray opening is of a ring ga structure. The combustion air guide pipe is arranged on the outermost layer of the burning nozzle, namely, the outer layer of the gas guide pipe. According to the oxygen enrichment burning nozzle, a structure that pure oxygen and combustion air are supplied from two paths is adopted, the oxygen guide pipe is arranged inside the gas guide pipe, the pure oxygen is sprayed into a furnace, relative high pressure momentum of the oxygen is used to drive gas, mixed gas is sprayed into the center of the furnace at relatively high speed, so that combustion strength is improved, a gas and oxygen combustion high-temperature centralized area is avoided, the evenness of the temperature of the furnace is improved, and generation amount of harmful gas is reduced.
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)
1. oxygen enrichment burner that improves fast end flue temperature, the oxygen enrichment burner is installed in the burner block (1), it is characterized in that, the oxygen enrichment burner is by oxygen catheter (2), gas-pipe line (5), (7) three layers of sleeve pipe of air conduit are formed, 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, be the skin of gas-pipe line, the front end of combustion air conduit is installed in the guiding device (8) of burner block (1).
2. the oxygen enrichment burner of a kind of quick raising end flue temperature according to claim 1 is characterized in that, the oxygen catheter end at burner center is equipped with peep-hole (4).
3. the oxygen enrichment burner of a kind of quick raising end flue temperature according to claim 1, it is characterized in that, be furnished with 6 ~ 10 air ports (9) on the described guiding device (8), air port (9) is circular, be evenly distributed on the circumference with the burner centres, the air port center line becomes 10 ° ~ 30 ° inside angle with the burner center line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201470679U CN203177179U (en) | 2013-03-27 | 2013-03-27 | Oxygen enrichment burning nozzle capable of quickly improving temperature of furnace end |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201470679U CN203177179U (en) | 2013-03-27 | 2013-03-27 | Oxygen enrichment burning nozzle capable of quickly improving temperature of furnace end |
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| CN203177179U true CN203177179U (en) | 2013-09-04 |
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| CN2013201470679U Expired - Fee Related CN203177179U (en) | 2013-03-27 | 2013-03-27 | Oxygen enrichment burning nozzle capable of quickly improving temperature of furnace end |
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Cited By (15)
| 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 | The method of operation of oxygen burner and 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 |
| 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 (20)
| 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 | The method of operation of oxygen burner and oxygen burner |
| CN107923614A (en) * | 2015-09-14 | 2018-04-17 | 大阳日酸株式会社 | The method of operation of oxygen burner and 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 |
| 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 | Low-NOx combustor 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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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130904 Termination date: 20200327 |
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| CF01 | Termination of patent right due to non-payment of annual fee |