CN106838901B - Burner with a burner body - Google Patents
Burner with a burner body Download PDFInfo
- Publication number
- CN106838901B CN106838901B CN201710108531.6A CN201710108531A CN106838901B CN 106838901 B CN106838901 B CN 106838901B CN 201710108531 A CN201710108531 A CN 201710108531A CN 106838901 B CN106838901 B CN 106838901B
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- CN
- China
- Prior art keywords
- combustion
- gas
- flue gas
- gas channel
- burner
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C9/00—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber
- F23C9/06—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber for completing combustion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/48—Nozzles
- F23D14/58—Nozzles characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/62—Mixing devices; Mixing tubes
Abstract
Disclosed is a burner comprising a combustion-supporting gas passage; a first gas passage located inside the combustion gas passage; and a flue gas channel positioned at the periphery of the combustion-supporting gas channel, wherein at least part of the periphery of the flue gas channel is provided with radiation blocks, so that the temperature of the flue gas passing through the flue gas channel is increased. The radiation block has higher blackness, and when the burner works, the flue gas passing through the flue gas channel is heated by the radiation block, the temperature is improved, and then the flue gas is sprayed into the combustion area to be mixed with combustion-supporting gas and fuel gas to participate in combustion.
Description
Technical Field
The present invention relates to the field of industrial burners, and more particularly to a burner.
Background
The industrial burner is a device for mixing and spraying fuel and combustion-supporting gas in a certain mode to make the fuel burn and release heat, and can be used for heating industrial furnaces, boilers and other devices.
In order to realize low nitrogen emission, the existing burner adopts the technologies of staged combustion, lean combustion premixing, flue gas recirculation and the like. The flue gas recirculation technology is to extract a part of low-temperature flue gas to be directly or mixed with combustion-supporting gas and then sent into a combustion zone, so that the flame temperature is reduced, and meanwhile, the regional oxygen concentration is reduced, thereby obviously reducing the emission concentration of nitrogen oxides. However, the flame stability is lowered due to the decrease of the flame temperature and the oxygen concentration, and the increase of carbon monoxide also causes a problem of lowering the combustion efficiency.
Disclosure of Invention
In view of the above problems, it is an object of the present invention to provide a burner for alleviating the problem of reduced combustion efficiency when introducing flue gas.
According to the present invention there is provided a burner comprising: a combustion-supporting gas passage; a first gas passage located inside the combustion gas passage; and a flue gas channel positioned at the periphery of the combustion-supporting gas channel, wherein at least part of the periphery of the flue gas channel is provided with radiation blocks, so that the temperature of the flue gas passing through the flue gas channel is increased.
Preferably, the combustion-supporting gas channel, the first gas channel and one end of the flue gas channel facing the combustion zone are respectively provided with a combustion-supporting gas outlet, a first gas outlet and a flue gas outlet.
Preferably, the blackness of the radiation block is above 0.6 at a temperature above 1000 ℃.
Preferably, the radiating block is disposed at the periphery of the flue gas outlet.
Preferably, the radiating mass has a thickness of 200 to 300 mm.
Preferably, the radiation block is also provided at least at part of the periphery of the combustion-supporting gas passage, so that the temperature of the combustion-supporting gas passing through the combustion-supporting gas passage is increased.
Preferably, the flue gas outlet of the flue gas channel is annular and is arranged with the central axis of the combustion-supporting gas channel as the center.
Preferably, the flue gas channel comprises a flow guiding section positioned at the upstream of the flue gas outlet, and the flow guiding section gathers the flue gas towards the central axis of the combustion-supporting gas channel.
Preferably, the burner further comprises: and the second fuel gas channel is positioned at the periphery of the combustion-supporting gas channel, and one end of the second fuel gas channel facing the combustion area is provided with a plurality of second fuel gas outlets.
Preferably, the plurality of second gas outlets are located in the flue gas channel and are uniformly and symmetrically distributed with the central axis of the combustion-supporting gas channel as the center.
Preferably, the first gas outlet is located within the combustion gas channel and on a central axis of the combustion gas channel.
Preferably, the burner further comprises: and the swirl disk is positioned at the periphery of the first gas outlet of the first gas channel, and the combustion-supporting gas is sprayed out through the swirl disk in a swirling manner.
Preferably, a gap is arranged between the edge of the cyclone disk and the inner wall of the combustion-supporting gas channel, and the combustion-supporting gas is directly sprayed out through the gap.
According to the burner disclosed by the invention, the radiation blocks are arranged on at least part of the periphery of the flue gas channel, the radiation blocks have higher blackness, when the burner works, the flue gas passing through the flue gas channel is heated by the radiation blocks, the temperature of the flue gas is increased and then is sprayed into a combustion area to be mixed with combustion-supporting gas and fuel gas and participate in combustion, and more flue gas can be mixed in the combustion process due to the increase of the temperature of the flue gas, so that the burner can realize lower emission of nitrogen oxides in a combustion environment with lower oxygen concentration after introducing recycled flue gas, and meanwhile, the ignition and combustion still have higher stability.
The burner may further comprise a second gas passage located at the periphery of the combustion gas passage, wherein a plurality of second gas outlets of the second gas passage are located in the flue gas passage and are uniformly and symmetrically distributed with the central axis of the combustion gas passage as the center. The burner may further comprise a swirl disk located at the periphery of the first gas outlet of said first gas channel. On the one hand, combustion-supporting gas is sprayed out through the rotational flow of the rotational flow disk and is mixed with fuel gas sprayed out from the first fuel gas outlet on the central shaft of the combustion-supporting gas channel for combustion, so that primary stable combustion is formed; on the other hand, the fuel gas sprayed out of the plurality of second fuel gas outlets uniformly distributed around the combustion-supporting gas channel is mixed with the heated flue gas sprayed out of the flue gas outlets and the combustion-supporting gas sprayed out of the combustion-supporting gas outlets for combustion, so that secondary stable combustion is formed. Through the grading stable combustion mode, the combustion efficiency is improved, and meanwhile, the lower emission of nitrogen oxides is realized.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent from the following description of embodiments of the present invention with reference to the accompanying drawings, in which:
FIG. 1 illustrates a top view of a combustor in accordance with an embodiment of the present invention.
FIG. 2 illustrates a cross-sectional view of a combustor in accordance with an embodiment of the present invention.
Detailed Description
The invention will be described in more detail below with reference to the accompanying drawings. For clarity, the various features of the drawings are not drawn to scale. Furthermore, some well-known portions may not be shown. Numerous specific details are set forth in the following description, but as will be appreciated by those skilled in the art, the invention may be practiced without such specific details.
It will be understood that when a layer, an area, or a structure is described as being "on" or "over" another layer, another area, it can be referred to as being directly on the other layer, another area, or another layer or area can be included between the layer and the other layer, another area. And if the component is turned over, that layer, one region, will be "under" or "beneath" the other layer, another region.
Fig. 1 and 2 show a top view and a cross-sectional view, respectively, of a burner according to an embodiment of the present invention, wherein the AA line in fig. 1 shows a cut-out position of the cross-sectional view, the burner being usable for heating industrial furnaces, boilers waiting for heating devices, comprising a combustion gas channel 110, a first gas channel 120 and a flue gas channel 130, the first gas channel 120 being located inside the combustion gas channel 110, the flue gas channel 130 being located at the periphery of the combustion gas channel 110, wherein at least part of the periphery of the flue gas channel 130 is provided with radiation blocks 150, such that the temperature of the flue gas passing through the flue gas channel 130 is increased.
The combustion-supporting gas channel 110 comprises a combustion-supporting gas inlet 111 and a combustion-supporting gas outlet 112, wherein the combustion-supporting gas inlet 111 is positioned at the side surface of the combustion-supporting gas channel, and the combustion-supporting gas outlet 112 is arranged at the end of the combustion-supporting gas channel 110 facing the combustion zone. The combustion-supporting gas is, for example, air, and combustion-supporting air can be generated by a gas conveying device such as a fan, and enters the combustion-supporting gas channel 110 through the combustion-supporting gas inlet 112, and then is sprayed to the combustion area through the combustion-supporting gas outlet 112 to be mixed with the fuel gas for combustion.
The first gas channel comprises a first gas inlet 121 and a first gas outlet 122, wherein the first gas inlet 121 is located at the side surface of the first gas inlet, and the first gas outlet 122 is arranged at the end of the first gas channel 120 facing the combustion zone. The fuel gas is, for example, natural gas, and enters the first fuel gas channel 120 through the first fuel gas inlet 122, and then is sprayed out to the combustion area through the first fuel gas outlet 122 to be mixed with the combustion-supporting gas to participate in combustion.
In this embodiment, the combustion-supporting gas outlet 112 is substantially circular, the first gas outlet 122 is located in the combustion-supporting gas channel 110 and is close to the combustion-supporting gas outlet 112, and the first gas channel 120 and the first gas outlet 122 are located on the central axis of the combustion-supporting gas channel 110.
The burner may further include a swirl disk 160 disposed at the periphery of the first gas outlet 122 of the first gas passage 120 such that the combustion gas is swirl-ejected to the combustion zone after passing through the swirl disk 122. Further, the outer diameter of the swirl disk 160 may be smaller than the inner diameter of the combustion gas channel 110 such that a gap 170 is provided between the edge of the swirl disk 160 and the inner wall of the combustion gas channel 110. In this embodiment, a part of the combustion-supporting gas in the combustion-supporting gas channel 110 is swirl-sprayed through the swirl disk 122, and another part is direct-current sprayed through the gap 170.
According to the burner provided by the invention, fuel gas is sprayed to the combustion area from the first fuel gas outlet 122 positioned on the central shaft of the fuel gas channel 110, at least part of the fuel gas is sprayed to the combustion area through the rotational flow disc 160 around the fuel gas outlet 122, and the fuel gas are mixed with each other and simultaneously form a low-pressure area through rotational flow in the area near the central shaft of the fuel gas channel 110, so that the flue gas provided by the flue gas channel 130 around the fuel gas channel 110 can be sucked for backflow, the stability of flame is ensured, and the primary stable combustion is formed.
The flue gas channel 130 comprises a flue gas inlet 131 and a flue gas outlet 132, wherein the flue gas inlet 131 is located at the side surface of the flue gas inlet, and the flue gas outlet 132 is arranged at the end of the flue gas channel 130 facing the combustion zone. The flue gas enters the flue gas channel 130 through the flue gas inlet 131, and is sprayed out to the combustion area through the flue gas outlet 132 to be mixed with the auxiliary fuel gas and the fuel gas for combustion.
As shown in fig. 1, the flue gas outlet 132 of the flue gas channel 130 in this embodiment is annular and is disposed centering on the central axis of the combustion-supporting gas channel 110.
As shown in fig. 2, further, the flue gas channel 130 includes a flow guiding section 133 located upstream of the flue gas outlet 132, and the flow guiding section 133 gathers the flue gas in the flue gas channel 130 toward the central axis of the combustion-supporting gas channel 110, so that the flue gas can be mixed with the combustion-supporting gas and the fuel gas more stably and efficiently after being sprayed from the flue gas outlet 132.
The burner may further include a second gas passage 140 located at the periphery of the combustion gas passage 110, and the second gas passage 140 may be provided at opposite ends thereof with a second gas inlet 141 and a second gas outlet 142, respectively, wherein the second gas outlet 142 is located at an end of the second gas passage 140 facing the combustion zone. The second gas passages 140 may have a plurality of second gas outlets 142, and in this embodiment, the second gas passages 140 are a plurality, and each second gas passage 140 includes a second gas inlet 141 and a second gas outlet 142. Preferably, the plurality of second gas passages 140 extend into the flue gas passage 130 partially, and the plurality of second gas outlets 142 are located in the flue gas passage 130 and are uniformly and symmetrically distributed with the central axis of the combustion-supporting gas passage 110 as the center.
According to the burner of the present invention, the fuel gas can enter the combustion zone through the second fuel gas channel 140 to form the second stable combustion in addition to the first stable combustion through the first fuel gas channel 120. The fuel gas can be sprayed to the combustion area through the plurality of second fuel gas outlets 112, and is mixed with the flue gas sprayed from the flue gas outlet 132 and the combustion-supporting gas sprayed from the combustion-supporting gas outlet 112 for combustion, and because the plurality of second fuel gas outlets 112 are uniformly distributed around the combustion-supporting gas channel 110, the annular flue gas outlet 132 is also arranged with the central axis of the combustion-supporting gas channel 110 as the center, and meanwhile, the flue gas and the fuel gas sprayed from the second fuel gas outlet 142 are all close to the central axis of the combustion-supporting gas channel 110 by the diversion section 133 included in the flue gas channel 130, so that the flue gas and the fuel gas sprayed from the second fuel gas outlet 112 can uniformly reach the area near the central axis of the combustion-supporting gas channel 110, and are more uniformly mixed with the combustion-supporting gas for combustion, thereby forming secondary stable combustion. Through the mode of the grading stable combustion, the combustion efficiency is higher when the burner works, the flue gas utilization is more sufficient, and the emission of nitrogen oxides can be effectively reduced.
The radiant mass 150 may be made of a refractory material having a relatively high degree of blackness, preferably the radiant mass 150 has a blackness of 0.6 or more, for example, 0.6 to 0.88, at a temperature of 1000 ℃ or more, and the high blackness radiant mass can rapidly raise the temperature of the flue gas passing through the flue gas channel 130 to reduce the effect of cold flue gas on combustion stability. In this embodiment, the radiant mass 150 is disposed at the periphery of the flue gas channel 130 at the flue gas outlet 132. A section of the flue gas channel 130 proximate the flue gas outlet 132 may be formed directly on the radiant block 150, which may be 200 to 300 millimeters thick.
Further, the radiation blocks 150 are also provided at least at part of the periphery of the combustion-supporting gas channel, so that the temperature of the combustion-supporting gas passing through the combustion-supporting gas channel 110 can be increased. In this embodiment, the radiation blocks 150 disposed corresponding to the combustion-supporting gas channels 110 are located at the periphery of the combustion-supporting gas outlets 112, and are connected to the radiation blocks 150 disposed at the periphery of the flue gas channels 130.
According to the burner disclosed by the invention, the radiation blocks 150 are arranged on at least part of the periphery of the flue gas channel 130, the radiation blocks 150 can transfer heat through radiation, when the burner works, the flue gas passing through the flue gas channel 130 is heated by the radiation blocks 150, the temperature of the flue gas is increased and then is sprayed into a combustion area to be mixed with combustion-supporting gas and fuel gas and participate in combustion, and due to the increase of the temperature of the flue gas, the burner can blend more flue gas in the combustion process and still keep high stability of ignition and combustion, so that the burner realizes lower emission of nitrogen oxides in a combustion environment with lower oxygen concentration after introducing more recycled flue gas. The radiation blocks 150 are also arranged on at least part of the periphery of the combustion-supporting gas channel 110, so that the temperature of the combustion-supporting gas passing through the combustion-supporting gas channel 110 can be increased, the air quantity of the combustion-supporting gas can be increased on the premise of ensuring flame stability, and the power and combustion efficiency of the burner are improved.
The burner may further include a pilot lamp 180, where the pilot lamp 180 is located in the combustion air channel 110 and extends axially along the combustion air channel 110, and an ignition device for igniting may be disposed at an end of the pilot lamp 180 near the first gas outlet 122, where, of course, the pilot lamp 180 may further include a flame detection device and so on. In addition, the burner may further include a bracket 190 located in the combustion gas channel 110, the flue gas channel 130, and other desired positions to provide support for a portion of the structure in the burner, for example, in this embodiment, the first gas channel 120 and the pilot lamp 180 are fixed to the inner wall of the combustion gas channel 110 by the bracket 190.
According to the invention, by means of grading stable combustion and increasing the radiation blocks with higher blackness, the influence of low-temperature flue gas introduced by the burner on flame temperature is reduced, the introduced amount of flue gas and the air quantity of combustion-supporting gas in the combustion process can be increased while temperature combustion is ensured, so that the carbon monoxide generation amount is reduced to even zero, the combustion efficiency is improved, and less emission of nitrogen oxides is realized.
It should be noted that in this document relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Embodiments in accordance with the present invention, as described above, are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention and various modifications as are suited to the particular use contemplated. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (9)
1. A burner, comprising:
a combustion-supporting gas passage;
a first gas passage located inside the combustion gas passage;
the second fuel gas channel is positioned at the periphery of the combustion-supporting gas channel, and one end of the second fuel gas channel facing the combustion area is provided with a plurality of second fuel gas outlets; and
a flue gas channel positioned at the periphery of the combustion-supporting gas channel,
wherein, at least part of the periphery of the flue gas channel is provided with radiation blocks, so that the temperature of the flue gas passing through the flue gas channel is increased;
the combustion-supporting gas channel, the first gas channel and one end of the flue gas channel facing the combustion zone are respectively provided with a combustion-supporting gas outlet, a first gas outlet and a flue gas outlet;
the flue gas outlet of the flue gas channel is annular and is arranged by taking the central shaft of the combustion-supporting gas channel as the center;
the plurality of second gas outlets are positioned in the flue gas channel and are uniformly and symmetrically distributed by taking the central axis of the combustion-supporting gas channel as the center.
2. The burner of claim 1, wherein the radiant mass has a blackness of 0.6 or more at temperatures above 1000 ℃.
3. The burner of claim 2, wherein the radiant mass is disposed at a perimeter of the flue gas outlet.
4. The burner of claim 2, wherein the radiant mass has a thickness of 200 to 300 millimeters.
5. The burner of claim 1, wherein at least a portion of the perimeter of the combustion air passage is also provided with the radiant mass such that the temperature of the combustion air passing through the combustion air passage is increased.
6. The burner of claim 1 wherein said flue gas channel includes a deflector section upstream of said flue gas outlet, said deflector section converging said flue gas toward a central axis of said combustion gas channel.
7. The burner of claim 1 wherein said first gas outlet is located within said combustion gas passage and on a central axis of said combustion gas passage.
8. The burner of claim 7, further comprising:
and the swirl disk is positioned at the periphery of the first gas outlet of the first gas channel, and the combustion-supporting gas is sprayed out through the swirl disk in a swirling manner.
9. The burner of claim 8 wherein a gap is provided between the edge of the swirl disk and the inner wall of the combustion air passage through which the combustion air is also discharged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710108531.6A CN106838901B (en) | 2017-02-27 | 2017-02-27 | Burner with a burner body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710108531.6A CN106838901B (en) | 2017-02-27 | 2017-02-27 | Burner with a burner body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106838901A CN106838901A (en) | 2017-06-13 |
| CN106838901B true CN106838901B (en) | 2023-09-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710108531.6A Active CN106838901B (en) | 2017-02-27 | 2017-02-27 | Burner with a burner body |
Country Status (1)
| Country | Link |
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| CN (1) | CN106838901B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109340741B (en) * | 2018-10-10 | 2020-01-07 | 武汉理工大学 | Flue gas heating device for pipeline |
| CN109556135A (en) * | 2018-11-30 | 2019-04-02 | 山东交通学院 | A kind of gas nozzle for gas engine |
| CN110375300A (en) * | 2019-06-28 | 2019-10-25 | 浙江先创能源科技股份有限公司 | A kind of burner of low-nitrogen oxide discharging |
| CN110454777A (en) * | 2019-06-28 | 2019-11-15 | 浙江先创能源科技股份有限公司 | A kind of combustion gas stratified combustion boiler, control system and method |
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| JPH10169929A (en) * | 1996-12-05 | 1998-06-26 | Tokyo Gas Co Ltd | Oxygen enriched combustion burner |
| CN1442629A (en) * | 2002-03-04 | 2003-09-17 | 中外炉工业株式会社 | Single end heat storage type radiation pipe burner device and its burning method |
| CN201363728Y (en) * | 2009-03-06 | 2009-12-16 | 苏和 | Air jet flow self-preheating burner nozzle |
| CN101666502A (en) * | 2009-10-29 | 2010-03-10 | 北京科技大学 | Heat exchanger in self-preheating burner |
| 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 |
| CN203628653U (en) * | 2013-07-24 | 2014-06-04 | 中冶华天工程技术有限公司 | Oxygen-enriched burner |
| CN207065565U (en) * | 2017-02-27 | 2018-03-02 | 海湾环境科技（北京）股份有限公司 | Burner |
| CN110469851A (en) * | 2019-09-11 | 2019-11-19 | 向顺华 | A kind of low nitrogen non-oxidation burner of self-preheating type flue gas self-circulation type |
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2017
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Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH10169929A (en) * | 1996-12-05 | 1998-06-26 | Tokyo Gas Co Ltd | Oxygen enriched combustion burner |
| CN1442629A (en) * | 2002-03-04 | 2003-09-17 | 中外炉工业株式会社 | Single end heat storage type radiation pipe burner device and its burning method |
| CN201363728Y (en) * | 2009-03-06 | 2009-12-16 | 苏和 | Air jet flow self-preheating burner nozzle |
| CN101666502A (en) * | 2009-10-29 | 2010-03-10 | 北京科技大学 | Heat exchanger in self-preheating burner |
| CN203628653U (en) * | 2013-07-24 | 2014-06-04 | 中冶华天工程技术有限公司 | Oxygen-enriched burner |
| 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 |
| CN207065565U (en) * | 2017-02-27 | 2018-03-02 | 海湾环境科技（北京）股份有限公司 | Burner |
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| Publication number | Publication date |
|---|---|
| CN106838901A (en) | 2017-06-13 |
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