CN203628653U - Oxygen-enriched burner - Google Patents
Oxygen-enriched burner Download PDFInfo
- Publication number
- CN203628653U CN203628653U CN201320443030.0U CN201320443030U CN203628653U CN 203628653 U CN203628653 U CN 203628653U CN 201320443030 U CN201320443030 U CN 201320443030U CN 203628653 U CN203628653 U CN 203628653U
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- Prior art keywords
- oxygen
- burner
- exhaust gas
- airduct
- combustion chamber
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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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Abstract
An oxygen-enriched burner comprises an air air-supply pipe (1), a gas inlet pipe (2) and a burner housing (3). The gas inlet pipe (2) is connected with a gas nozzle (4) configured to penetrate through the burner housing (3). The oxygen-enriched burner also comprises an oxygen air-supply pipe (5). The tail end of the oxygen air-supply pipe (5) is provided with an oxygen nozzle (6). The oxygen nozzle (6) is arranged in the gas nozzle (4). The oxygen-enriched burner is simple in structure, low in cost, small in amount of fume during usage, less in exhaust fume heat loss, high in fuel utilization rate, and convenient to use, mount and maintain, and is capable of lowering the oxidation and burning loss rates of steel billets effectively and improving the heating quality of billets.
Description
Technical field
The utility model relates to the efficient burning equipment technical field that industrial furnace is used, and relates in particular to a kind of oxygen enrichment burner.
Background technology
The domestic gas burner for industrial furnace adopts the sleeve type structure of air parcel combustion gas mostly at present, combustion gas is sprayed by the steel pipe at center, combustion air passes through at peripheral sleeve pipe, under the turning effort of cyclone, form with swirling eddy sprays into burner hearth, the two,, in the burning of burner hearth inner edge mixing limit, forms cylindrical or flaring revolving body flame, belongs to typical non-premixed combustion flame.Flame inside is take fuel as main reducing atmosphere, and outside is take combustion products such as air, carbon dioxide, steam as main oxidizing atmosphere.
This burner exists following not enough: while 1, use, exhaust gas volumn is larger, causes heat loss due to exhaust gas larger, and fuel availability is lower; 2, for the low calorie fuels such as blast furnace gas, when existing burner combustion, because theoretical temperature combustion is too low, cannot adopt conventional combustion mode, must adopt heat accumulating type or the pre-heated combustion technology of heat exchanger, virtually increase the cost of investment of combustion system; 3, blank is surrounded by this oxidizing atmosphere all the time in heating process, causes blank oxidization burning loss serious; 4, degree of sprawling is shorter in the horizontal direction for the revolving body flame forming in use procedure, cause high-temperature region to concentrate on less region, perpendicular projection area on heated blank is little, RADIATION ANGLE COEFFICIENT is lower, both affected the heating effect of blank, also very easily form district of localized hyperthermia, and the existence in district of localized hyperthermia, give the generation of the thermal NO condition of providing convenience, cause the amount of nitrogen oxides in combustion product higher, very easily cause environmental pollution.
In addition, the common employing of oxygen enrichment burner of the prior art is set up oxygen rifle and is carried out the mode of pure oxygen winding-up below burner, thereby reaches the effect of oxygen-enriched combusting, but the growing amount of the burner nitrogen oxide of this kind of structure and combustion adjuvant infeed amount are restive.
Utility model content
The technical problems to be solved in the utility model be to provide a kind of simple in structure, with low cost, exhaust gas volumn is little while using, heat loss due to exhaust gas is few, fuel availability is high, can eliminate the oxygen enrichment burner in flame localized hyperthermia district while burning.
For solving the problems of the technologies described above, the utility model adopts following technical scheme:
A kind of oxygen enrichment burner, comprise that air is for airduct, combustion gas inlet pipe and burner shell, on combustion gas inlet pipe, be connected with exhaust gas nozzle, exhaust gas nozzle interts in burner shell, this oxygen enrichment burner also comprises that oxygen is for airduct, be provided with oxygen spray pipe at oxygen for the end of airduct, oxygen spray pipe is located in exhaust gas nozzle.Like this, in use, owing to there being passing into of oxygen, improve the oxygen content in combustion air, reduce the content of nitrogen, effectively raise theoretical temperature combustion, and make flame inside form fuel-rich regions, in this region, there is pyrolysis and generate a large amount of macromolecule hydrocarbon compounds in fuel, in increasing flame brightness, reduce flame temperature, can effectively eliminate the district of localized hyperthermia in flame, regulate infeed amount by control connection oxygen for valve opening on airduct, flame rigidity is good, shape is easy to control, in combustion product, nitrogen oxide emission reduces greatly, greatly reduce heat loss due to exhaust gas, improve fuel availability.
Oxygen spray pipe and exhaust gas nozzle coaxially arrange, and have facilitated like this manufacture of the present utility model, installation and maintenance, in use, are difficult for occurring Biased flow phenomenon.
Be provided with burner block at burner shell end, be provided with interior combustion chamber in burner block, the point diameter of interior combustion chamber is greater than its rear end diameter, and the end of oxygen spray pipe and exhaust gas nozzle is located at the front end of interior combustion chamber.
On exhaust gas nozzle, be arranged with movable wind duct and fixing airduct, one end of movable wind duct is narrow tube, be set on exhaust gas nozzle, the other end is large diameter pipe, be set on fixing airduct, on the lap of movable wind duct and fixing airduct, be respectively equipped with the first air port and the second air port, on movable wind duct, be provided with active ring and retainer plate, rotate active ring and can adjust the coincidence area in two air ports, be provided with the first cyclone and the second cyclone at the end of fixing airduct and exhaust gas nozzle in respectively.In the utility model, interior combustion chamber adopts undergauge channel-type structure, in the front end cross dimensions of combustion chamber be greater than its rear end cross dimensions, fuel in interior combustion chamber after primary combustion, to spray into burner hearth with higher speed, improved flame jet velocity and the length of flame.
In burner block, be provided with secondary air channel, secondary air channel is parallel to interior combustion chamber and in the side away from heated object, in interior combustion chamber, there is the combustion product after primary combustion in fuel, the auxiliary air that enters burner hearth and secondary air channel infeed by interior combustion product channels burns, make like this flame front of blank to be weak reducing atmosphere, can effectively reduce the oxidization burning loss rate of steel billet, blank heating quality is greatly improved.
Described secondary air channel and interior combustion product channels are strip.
In burner block, be provided with circulating flue gas passage, circulating flue gas passage is communicated with interior combustion chamber, and secondary air channel is distributed in the both sides of interior combustion chamber, and circulating flue gas passage is strip.By adopting flue gas recirculation backflow cooling technology to reduce the temperature of flame; effectively avoided flame root local temperature too high, make inner combustion chamber's flue gas be reducing atmosphere; the protection burner block life-span, greatly reduce the discharge capacity of the pollutants such as nitrogen oxide.In the utility model, secondary air channel, circulating flue gas passage and interior combustion chamber are all arranged to strip, can make like this burner flame flow is in use flat, the parallel burner hearth that sprays into, cover blank surface, RADIATION ANGLE COEFFICIENT is large, can effectively improve the radiant heat transfer effect of blank, has improved the thermal efficiency.
Compared with prior art, the utility model technology has the following advantages:
1, the utility model simple in structure, with low cost, use time exhaust gas volumn little, heat loss due to exhaust gas is few, fuel availability is high.The common employing of oxygen enrichment burner of the prior art is set up oxygen rifle and is carried out the mode of pure oxygen winding-up below burner, thereby reaches the effect of oxygen-enriched combusting, but the growing amount of the burner nitrogen oxide of this kind of structure and combustion adjuvant infeed amount are restive, and in the utility model, by setting up oxygen for airduct and oxygen spray pipe in existing burner, and oxygen spray pipe is located in exhaust gas nozzle, simple in structure, with low cost, in use, owing to there being passing into of oxygen, improve the oxygen content in combustion air, reduce the content of nitrogen, effectively raise theoretical temperature combustion, and make flame inside form fuel-rich regions, in this region, there is pyrolysis and generate a large amount of macromolecule hydrocarbon compounds in fuel, in increasing flame brightness, reduce flame temperature, can effectively eliminate the district of localized hyperthermia in flame, regulate infeed amount by control connection oxygen for valve opening on airduct, flame rigidity is good, shape is easy to control, in combustion product, nitrogen oxide emission reduces greatly, greatly reduce heat loss due to exhaust gas, improve fuel availability.
2, the utility model manufacture, installation, use are all convenient.In the utility model, oxygen spray pipe and exhaust gas nozzle are coaxially arranged, manufacture of the present utility model, installation and maintenance are facilitated like this, in use, be difficult for occurring Biased flow phenomenon, in improving flame rigidity, avoid oxygen spray pipe, exhaust gas nozzle, interior combustion chamber because directly contacting with flame defects such as causing its shortening in service life.
3, the utility model can improve flame jet velocity and the length of flame.In the utility model, interior combustion chamber adopts undergauge channel-type structure, in the front end cross dimensions of combustion chamber be greater than its rear end cross dimensions, fuel in interior combustion chamber after primary combustion, to spray into burner hearth with higher speed, improved flame jet velocity and the length of flame.
4, the utility model can effectively reduce oxidization burning loss, the raising blank heating quality of steel billet.In the utility model, in burner block, be provided with secondary air channel, and this passage is positioned at the side away from blank in internal combustion burning chamber, making like this secondary air channel is blank away from heated object all the time, make the flame front of blank to be weak reducing atmosphere, can effectively reduce the oxidization burning loss rate of steel billet, blank heating quality is greatly improved.
5, the service life of the utility model energy prolonging combustion device brick and reduction nitrogen oxide emission.In the utility model; in burner block, be provided with circulating flue gas passage; circulating flue gas passage is communicated with interior combustion chamber and burner hearth; by adopting flue gas recirculation backflow cooling technology to reduce the temperature of flame; effectively avoided flame root local temperature too high, make inner combustion chamber's flue gas be reducing atmosphere; the protection burner block life-span, greatly reduce the discharge capacity of the pollutants such as nitrogen oxide.
6, the utility model can improve the thermal efficiency.In the utility model, secondary air channel, circulating flue gas passage and interior combustion chamber are all strip, can make like this burner flame flow is in use flat, the parallel burner hearth that sprays into, cover blank surface, RADIATION ANGLE COEFFICIENT is large, can effectively improve the radiant heat transfer effect of blank, has improved the thermal efficiency.
7, the utility model is easy to operate.In the utility model, by be arranged with movable wind duct and fixing airduct on exhaust gas nozzle, on the lap of movable wind duct and fixing airduct, be respectively equipped with the first air port and the second air port, on movable wind duct, be provided with active ring and retainer plate, adjust the coincidence area in two air ports by rotating active ring, thereby reach the first and second combustion air ratio of adjustment, to reach better combustion efficiency, operate very convenient.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
Fig. 1 is the structural representation of the utility model oxygen enrichment burner.
Fig. 2 is the A-A cutaway view of Fig. 1.
In above figure, have: 1 air is for airduct, 2 combustion gas inlet pipes, 3 burner shells, 4 exhaust gas nozzles, 5 oxygen are for airduct, 6 oxygen spray pipes, 7 burner block, 8 interior combustion chambers, 9 secondary air channels, 10 circulating flue gas passages, 11 movable wind ducts, 12 fixing airducts, 13 first air ports, 14 second air ports, 15 active rings, 16 retainer plates, 17 first cyclones, 18 second cyclones, 19 special-shaped flanges, 20 burner shell steel plates, 21 dog screws, 22 spouts, 23 interior combustion product channels.
The specific embodiment
embodiment 1
(with reference to Fig. 1) a kind of oxygen enrichment burner, comprise that air is for airduct 1, combustion gas inlet pipe 2 and burner shell 3, on combustion gas inlet pipe 2, be connected with exhaust gas nozzle 4, exhaust gas nozzle 4 interts in burner shell 3, this oxygen enrichment burner also comprises that oxygen is for airduct 5, be provided with oxygen spray pipe 6 at oxygen for the end of airduct 5, oxygen spray pipe 6 is located in exhaust gas nozzle 4, oxygen spray pipe 6 and exhaust gas nozzle 4 coaxially arrange, air is connected with stokehold air supply line by flange for airduct 2 with oxygen for airduct 1, and combustion gas inlet pipe 3 is connected with stokehold steam line by flange.
Be provided with burner block 7 at burner shell 3 ends, in burner block 7, be provided with interior combustion chamber 8, the point diameter of interior combustion chamber 8 is greater than its rear end diameter, the end of oxygen spray pipe 6 and exhaust gas nozzle 4 is located at the front end of interior combustion chamber 8, on described exhaust gas nozzle 4, be arranged with movable wind duct 11 and fixing airduct 12, one end of movable wind duct 11 is narrow tube, be set on exhaust gas nozzle 4, the other end is large diameter pipe, be set on fixing airduct 12, one end of fixing airduct 12 is fixed on burner shell steel plate 20 by special-shaped flange 19, on the lap of movable wind duct 11 and fixing airduct 12, be respectively equipped with the first air port 13 and the second air port 14, on movable wind duct 11, be provided with active ring 15 and retainer plate 16, in retainer plate 16, be provided with dog screw 21, be used for geocoded activity airduct 11, in actual mechanical process, rotate active ring 15 and can adjust the coincidence area in two air ports, be provided with the first cyclone 17 and the second cyclone 18 at the end of fixing airduct 12 and exhaust gas nozzle 4 in respectively.In burner block 7, be provided with secondary air channel 9, what secondary air channel 9 was positioned at combustion chamber 8 is a side of blank away from heated object, and (with reference to Fig. 2) described secondary air channel 9 is strip; In burner block 7, be provided with circulating flue gas path 10, circulating flue gas path 10 is communicated with interior combustion chamber 8, and secondary air channel 9 is distributed in the both sides of interior combustion chamber 8, and circulating flue gas path 10 and interior combustion chamber 8 are all strip.
In the present embodiment, oxygen enrichment burner is mounted in heated object top conduct " upper burner " use, its course of work is as follows: secondary air channel 9 is positioned at away from blank side, combustion gas enters burner by combustion gas inlet pipe 2, and combustion air supplies airduct 1 and oxygen to enter burner for airduct 5 by air.Air is for the combustion air of airduct 1, a part is by the first air port 13 on fixing airduct 12 and movable wind duct 11 and the intersection between the second air port 14, enter the inner chamber of fixing airduct 12 and movable wind duct 11, this part air and form the primary air of burner from the oxygen of oxygen spray pipe 6, after turning effort by the first cyclone 17 and the second cyclone 18, together with the combustion gas spraying with spout 22 with the form of rotating flow, spray into interior combustion chamber 8, in interior combustion chamber, 8 there is imperfect combustion.Air directly sprays into burner hearth for the secondary combustion-supporting air of airduct 1 through strip secondary air channel 9, the imperfect combustion product that this part secondary combustion-supporting air sprays with interior combustion product channels 23 and circulating flue gas path 10 entrainment the flue gas of coming in to be mixed again, and in burner hearth, completes whole combustion process.Wherein the ratio of first and second combustion air regulates by the first air port 13 on adjustment movable wind duct 11 and fixing airduct 12, the coincidence area between the second air port 14, be connected to valve opening on oxygen spray pipe 6 and regulate the supply ratio of oxygen by adjusting, control the concentration of oxygen in combustion air.
embodiment 2
In the present embodiment oxygen enrichment burner be mounted in heated object issue as " lower burner " use, version is identical with embodiment 1 with the course of work, when installation by the oxygen enrichment burner Rotate 180 shown in Fig. 1 ° or by secondary air channel 9 and circulating flue gas path 10 reversing of position.
Claims (2)
1. an oxygen enrichment burner, comprise that air is for airduct (1), combustion gas inlet pipe (2) and burner shell (3), on combustion gas inlet pipe (2), be connected with exhaust gas nozzle (4), exhaust gas nozzle (4) interts in burner shell (3), it is characterized in that: this oxygen enrichment burner also comprises that oxygen is for airduct (5), be provided with oxygen spray pipe (6) at oxygen for the end of airduct (5), oxygen spray pipe (6) is located in exhaust gas nozzle (4), oxygen spray pipe (6) and exhaust gas nozzle (4) coaxially arrange, be provided with burner block (7) at burner shell (3) end, in burner block (7), be provided with interior combustion chamber (8), the point diameter of interior combustion chamber (8) is greater than its rear end diameter, and the end of oxygen spray pipe (6) and exhaust gas nozzle (4) is located at the front end of interior combustion chamber (8), on described exhaust gas nozzle (4), be arranged with movable wind duct (11) and fixing airduct (12), one end of movable wind duct (11) is narrow tube, be set on exhaust gas nozzle (4), the other end is large diameter pipe, be set on fixing airduct (12), on the lap of movable wind duct (11) and fixing airduct (12), be respectively equipped with the first air port (13) and the second air port (14), on movable wind duct (11), be provided with active ring (15) and retainer plate (16), rotate active ring (15) and can adjust the coincidence area in two air ports, be provided with the first cyclone (17) and the second cyclone (18) at the end of fixing airduct (12) and exhaust gas nozzle (4) in respectively, in burner block (7), be provided with secondary air channel (9), secondary air channel (9) is parallel to interior combustion chamber (8) and in the side away from heated object, there is the combustion product after primary combustion in fuel, the auxiliary air that enters burner hearth and secondary air channel (9) infeed by interior combustion product channels (23) burns in interior combustion chamber (8), described secondary air channel (9) and interior combustion product channels (23) are strip, in burner block (7), be provided with circulating flue gas passage (10), circulating flue gas passage (10) is communicated with interior combustion chamber (8), and secondary air channel (9) is distributed in the both sides of interior combustion chamber (8).
2. oxygen enrichment burner according to claim 1, is characterized in that: circulating flue gas passage (10) is strip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320443030.0U CN203628653U (en) | 2013-07-24 | 2013-07-24 | Oxygen-enriched burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320443030.0U CN203628653U (en) | 2013-07-24 | 2013-07-24 | Oxygen-enriched burner |
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| Publication Number | Publication Date |
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| CN203628653U true CN203628653U (en) | 2014-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320443030.0U Expired - Lifetime CN203628653U (en) | 2013-07-24 | 2013-07-24 | Oxygen-enriched burner |
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| Country | Link |
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| CN (1) | CN203628653U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103398379A (en) * | 2013-07-24 | 2013-11-20 | 中冶华天工程技术有限公司 | Oxygen-enriched burner |
| CN106838901A (en) * | 2017-02-27 | 2017-06-13 | 海湾环境科技（北京）股份有限公司 | Burner |
| CN109611843A (en) * | 2018-12-18 | 2019-04-12 | 东北大学 | A kind of adjustable biological fuel gas burner of the length of flame and its application method |
| CN109611844A (en) * | 2018-12-18 | 2019-04-12 | 东北大学 | A kind of fractional combustion natural gas combustion nozzle and its application method |
| CN113091061A (en) * | 2021-05-06 | 2021-07-09 | 北京神科博斯热能工程技术有限公司 | High-efficient industry low NOx burner |
-
2013
- 2013-07-24 CN CN201320443030.0U patent/CN203628653U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103398379A (en) * | 2013-07-24 | 2013-11-20 | 中冶华天工程技术有限公司 | Oxygen-enriched burner |
| CN106838901A (en) * | 2017-02-27 | 2017-06-13 | 海湾环境科技（北京）股份有限公司 | Burner |
| CN106838901B (en) * | 2017-02-27 | 2023-09-01 | 海湾环境科技（北京）股份有限公司 | Burner with a burner body |
| CN109611843A (en) * | 2018-12-18 | 2019-04-12 | 东北大学 | A kind of adjustable biological fuel gas burner of the length of flame and its application method |
| CN109611844A (en) * | 2018-12-18 | 2019-04-12 | 东北大学 | A kind of fractional combustion natural gas combustion nozzle and its application method |
| CN113091061A (en) * | 2021-05-06 | 2021-07-09 | 北京神科博斯热能工程技术有限公司 | High-efficient industry low NOx burner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151223 Address after: Jianye District of Nanjing City, Jiangsu province 210019 the Fuchun River Street No. 18 Patentee after: NANJING INDUSTRIAL FURNACE Co.,Ltd. HTC Address before: 243000 No. 25, Hunan Road, Anhui, Ma'anshan Patentee before: HUATIAN ENGINEERING & TECHNOLOGY CORPORATION, MCC |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20161207 Address after: 243005 Hunan West Road, Anhui, China, No. 699, No. Patentee after: HUATIAN ENGINEERING & TECHNOLOGY CORPORATION, MCC Address before: Jianye District of Nanjing City, Jiangsu province 210019 the Fuchun River Street No. 18 Patentee before: NANJING INDUSTRIAL FURNACE Co.,Ltd. HTC |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140604 |