CN108534138B - Graded low NOx straight flame burner - Google Patents
Graded low NOx straight flame burner Download PDFInfo
- Publication number
- CN108534138B CN108534138B CN201810353166.XA CN201810353166A CN108534138B CN 108534138 B CN108534138 B CN 108534138B CN 201810353166 A CN201810353166 A CN 201810353166A CN 108534138 B CN108534138 B CN 108534138B
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- flame
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- 239000007789 gas Substances 0.000 claims abstract description 46
- 238000002485 combustion reaction Methods 0.000 claims abstract description 42
- 238000001514 detection method Methods 0.000 claims abstract description 8
- 239000002737 fuel gas Substances 0.000 claims abstract description 5
- 208000008918 voyeurism Diseases 0.000 claims abstract description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 6
- 239000001301 oxygen Substances 0.000 claims description 6
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims 3
- 238000010438 heat treatment Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000009841 combustion method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- 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
- 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
-
- 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
-
- 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
- F23D14/70—Baffles or like flow-disturbing devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2207/00—Ignition devices associated with burner
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Abstract
The invention relates to a grading low NOx direct flame burner, and belongs to the technical field of fuel gas burners. At present, most of straight flame burners adopt a primary mixed combustion structure, the flame temperature is high, the content of NOx in combustion products is high, and the environment is polluted greatly, but the flame rigidity of most of burners with low NOx emission is poor at present. The invention comprises an end cover, a shell, a burner core, a gas pipe, an air guiding device, a burner block, an ignition electrode and a flame detection device, wherein the end cover is provided with a gas interface and a peeping hole, the shell comprises an air interface and an air circulation cavity, the air interface is communicated with the air circulation cavity, the ignition electrode and the flame detection device are both arranged on the end cover, the end cover is arranged on one side of the shell, the burner block is arranged on the other side of the shell, the air guiding device is arranged in the air circulation cavity, the air guiding device is positioned between the shell and the burner block, the burner core is arranged in the air guiding device, and the end cover is connected with the burner core through the gas pipe.
Description
Technical Field
The invention relates to a grading low NOx direct flame burner, and belongs to the technical field of fuel gas burners. The method is applicable to industrial kilns in industries of steel, nonferrous, machinery, ceramics and the like, in particular to an air preheating heat treatment furnace.
Background
At present, most of straight flame burners adopt a primary mixed combustion structure, the flame temperature is high, the content of NOx in combustion products is high, and the environment is greatly polluted, but the flame rigidity of most of burners with low NOx emission is poor, the structure is complex, and the popularization and the application of the burners in industrial furnaces are affected.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides the graded low-NOx direct-flame burner which is reasonable in structural design, reduces the oxygen content in the center of flame, reduces the flame temperature, inhibits the generation of NOx, reduces the NOx content in combustion products, ensures that the flame temperature distribution is more uniform and improves the heating quality through multistage mixed combustion.
The invention solves the problems by adopting the following technical scheme: the hierarchical low NOx straight flame nozzle is characterized in that: including end cover, casing, nozzle core, gas pipe, air guiding device, burner block, ignition electrode and flame detection device, be provided with gas interface and peeping hole on the end cover, the casing includes air interface and air circulation cavity, air interface and air circulation cavity intercommunication, ignition electrode and flame detection device all install on the end cover, the one side at the casing is installed to the end cover, the opposite side at the casing is installed to the burner block, air guiding device installs in the air circulation cavity, and air guiding device is located between casing and the nozzle block, the nozzle core is installed in air guiding device, the end cover passes through the gas pipe with the nozzle core and is connected.
Further, the nozzle core includes current limiting baffle, turn-ups, fan ring groove breach, lateral wall round hole, terminal surface round hole, center round hole, connecting plate and nozzle core body, the turn-ups sets up in one side of nozzle core body, the connecting plate sets up the opposite side at the nozzle core body, fan ring groove breach sets up on the turn-ups, current limiting baffle and lateral wall round hole all set up on the lateral wall of nozzle core body, terminal surface round hole and center round hole all set up on the connecting plate, and center round hole is located the middle part of connecting plate.
Further, the gas pipe includes second grade gas spouting hole and multistage air distribution hole, second grade gas spouting hole and multistage air distribution hole all are provided with a plurality ofly along the circumference of gas pipe, the one end and the gas interface intercommunication of gas pipe, the other end of gas pipe, second grade gas spouting hole and multistage air distribution hole all are located the nozzle core body.
Further, the air guiding device comprises a circular plate, through holes and a sleeve, wherein the circular plate is arranged on the sleeve, the through holes are formed in the circular plate, the circular plate is arranged between the shell and the burner block, the burner core is arranged in the sleeve, and the number of the through holes is 1-2.
Further, the burner block includes plenum chamber, combustion chamber, a plurality of air branch flow hole and combustion chamber connector, the shape of plenum chamber is cylindric, the inside of combustion chamber is the cylinder cavity, a plurality of air branch flow holes all are provided with the tapering, the one end of combustion chamber and the one end of a plurality of air branch flow hole all communicate with the plenum chamber, the other end and the combustion chamber connector intercommunication of combustion chamber, the diameter of this one end of combustion chamber is greater than the diameter of this other end of combustion chamber, restriction baffle and connecting plate all are located the sleeve, the turn-ups is located the combustion chamber, the quantity of air branch flow hole is 2 ~ 8.
Further, the shape of the burner core body is a truncated cone, the inside of the burner core body is of a cavity structure, an included angle between a bus of the burner core body and the axis of the burner core body is theta, theta is more than or equal to 0 degree and less than or equal to 30 degrees, the number of the fan ring groove notches is n, n is more than or equal to 2, and n fan ring groove notches are all distributed along the circumferential direction of the burner core body.
Further, the number of the side wall round holes is 2-3, the number of the side wall round holes in each circle is an integer multiple of n, wherein an included angle between the axis of the side wall round hole in the first circle and the axis of the burner core body is alpha, 30 degrees is more than or equal to alpha and less than or equal to 90 degrees, included angles between the axes of the side wall round holes in the other circles and the axis of the burner core body are beta, 15 degrees is more than or equal to beta and less than or equal to 75 degrees, and the flow limiting baffle is arranged on the right side of the side wall round hole in the first circle.
Further, the number of the end face round holes is 2-3, the end face round holes comprise an outer end face round hole and an inner end face round hole, the axis of the outer end face round hole is parallel to the axis of the burner core body, an included angle between the axis of the inner end face round hole and the axis of the burner core body is gamma, and the deflection angle of the inner end face round hole along the anticlockwise direction is lambda, gamma is more than or equal to 0 degree and less than or equal to 20 degrees, lambda is more than or equal to 0 degree and less than or equal to 15 degrees.
Further, the height of the sleeve is h, and the distance between the inlet end of the sleeve and the connecting plate is x, wherein x is more than or equal to 0 and less than or equal to h/2.
Further, the combustion method of the graded low NOx direct flame burner is characterized in that: according to the graded low-NOx direct-flame burner, air and fuel gas are mixed and combusted for multiple times according to the proportion through the air guide device, the side wall round holes of the burner core and the air flow dividing holes of the burner block, so that the oxygen concentration is reduced in the center of a combustion flame, a reducing atmosphere is formed, the generation of NOx is restrained, the flame rigidity is improved, the flame temperature is reduced, the generation of NOx is reduced, and the low emission of the industrial burner is realized.
Compared with the prior art, the invention has the following advantages:
the device can reduce the oxygen content in the center of flame through multistage mixed combustion, reduce flame temperature, inhibit NOx from generating, reduce the NOx content in combustion products, the flame temperature distribution is more uniform, and the heating quality is improved.
Drawings
FIG. 1 is a schematic cross-sectional front view of a staged low NOx direct flame burner in accordance with an embodiment of the present invention.
FIG. 2 is a schematic right-side view of a burner core according to an embodiment of the present invention.
Fig. 3 is a schematic view of a cross-sectional front view of a burner core according to an embodiment of the present invention.
FIG. 4 is a schematic left-hand view of a burner core according to an embodiment of the present invention.
Fig. 5 is a schematic cross-sectional front view of an air guiding device according to an embodiment of the present invention.
Fig. 6 is a right-side view of an air guiding device according to an embodiment of the present invention.
In the figure: the burner comprises an end cover 1, a shell 2, a burner core 3, a gas pipe 4, an air guiding device 5, a burner block 6, an ignition electrode 7, a flame detection device 8, a gas interface 11, a peeping hole 12, an air interface 21, an air circulation cavity 22, a flow limiting baffle 31, a flanging 32, a fan ring groove notch 33, a side wall round hole 34, an end surface round hole 35, a central round hole 36, a connecting plate 37, a burner core body 38, a secondary gas jet hole 41, a multi-stage air distribution hole 42, a circular ring plate 51, a through hole 52, a sleeve 53, a gas collection chamber 61, a combustion chamber 62, an air diversion hole 63 and a combustion chamber connecting port 64.
Detailed Description
The present invention will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and not limited to the following examples.
Examples
Referring to fig. 1 to 6, it should be understood that the structures, proportions, sizes, etc. shown in the drawings attached to the present specification are shown only for the purpose of understanding and reading by those skilled in the art, and are not intended to limit the applicable limitations of the present invention, so that any structural modification, change in proportion, or adjustment of size does not have any technical significance, and all fall within the scope of the technical content of the present invention without affecting the efficacy and achievement of the present invention. In the present specification, the terms "upper", "lower", "left", "right", "middle" and "a" are used for descriptive purposes only and are not intended to limit the scope of the invention, but are also intended to be within the scope of the invention without any substantial modification to the technical content.
The grading low NOx direct flame burner in the embodiment comprises an end cover 1, a shell 2, a burner core 3, a gas pipe 4, an air guiding device 5, a burner block 6, an ignition electrode 7 and a flame detection device 8, wherein a gas interface 11 and a peeping hole 12 are formed in the end cover 1, the shell 2 comprises an air interface 21 and an air circulation cavity 22, the air interface 21 is communicated with the air circulation cavity 22, the ignition electrode 7 and the flame detection device 8 are both arranged on the end cover 1, the end cover 1 is arranged on one side of the shell 2, the burner block 6 is arranged on the other side of the shell 2, the air guiding device 5 is arranged in the air circulation cavity 22, the air guiding device 5 is positioned between the shell 2 and the burner block 6, the burner core 3 is arranged in the air guiding device 5, and the end cover 1 is connected with the burner core 3 through the gas pipe 4.
The burner core 3 in this embodiment includes a flow-limiting baffle 31, a flange 32, a fanning groove notch 33, a side wall round hole 34, an end face round hole 35, a center round hole 36, a connecting plate 37 and a burner core body 38, the flange 32 is disposed on one side of the burner core body 38, the connecting plate 37 is disposed on the other side of the burner core body 38, the fanning groove notch 33 is disposed on the flange 32, the flow-limiting baffle 31 and the side wall round hole 34 are disposed on the side wall of the burner core body 38, the end face round hole 35 and the center round hole 36 are disposed on the connecting plate 37, and the center round hole 36 is disposed in the middle of the connecting plate 37.
The gas pipe 4 in this embodiment includes a secondary gas jet hole 41 and a multi-stage air distribution hole 42, the secondary gas jet hole 41 and the multi-stage air distribution hole 42 are all provided with a plurality of along the circumference of the gas pipe 4, one end of the gas pipe 4 is communicated with the gas interface 11, and the other end of the gas pipe 4, the secondary gas jet hole 41 and the multi-stage air distribution hole 42 are all located in the burner core body 38.
The air guiding device 5 in this embodiment includes a circular plate 51, through holes 52 and a sleeve 53, the circular plate 51 is mounted on the sleeve 53, the through holes 52 are provided on the circular plate 51, the circular plate 51 is mounted between the housing 2 and the burner block 6, the burner core 3 is mounted in the sleeve 53, and the number of the through holes 52 is 1-2.
The burner block 6 in this embodiment includes a gas collection chamber 61, a combustion chamber 62, a plurality of air diversion holes 63 and a combustion chamber connection port 64, the gas collection chamber 61 is cylindrical in shape, the combustion chamber 62 is a cylindrical cavity, the plurality of air diversion holes 63 are all provided with taper, one end of the combustion chamber 62 and one end of the plurality of air diversion holes 63 are all communicated with the gas collection chamber 61, the other end of the combustion chamber 62 is communicated with the combustion chamber connection port 64, the diameter of the one end of the combustion chamber 62 is larger than the diameter of the other end of the combustion chamber 62, the flow limiting baffle 31 and the connecting plate 37 are both located in the sleeve 53, the flange 32 is located in the combustion chamber 62, and the number of the air diversion holes 63 is 2-8.
In the embodiment, the burner core body 38 is in a truncated cone shape, the inside of the burner core body 38 is in a cavity structure, an included angle between a bus of the burner core body 38 and an axis of the burner core body 38 is theta, theta is more than or equal to 0 degrees and less than or equal to 30 degrees, the number of the fan ring groove notches 33 is n, n is more than or equal to 2, and the n fan ring groove notches 33 are all distributed along the circumferential direction of the burner core body 38.
The number of the side wall round holes 34 in the embodiment is 2-3, the number of the side wall round holes 34 in each circle is an integer multiple of n, wherein an included angle between the axis of the first circle of side wall round holes and the axis of the burner core body 38 is alpha, 30 degrees is less than or equal to alpha is less than or equal to 90 degrees, included angles between the axes of the other circles of side wall round holes 34 and the axis of the burner core body 38 are beta, 15 degrees is less than or equal to beta is less than or equal to 75 degrees, and the flow limiting baffle plate 31 is arranged on the right side of the first circle of side wall round holes 34.
The number of the end face round holes 35 in the embodiment is 2-3, the end face round holes 35 comprise an outer end face round hole and an inner end face round hole, the axis of the outer end face round hole is parallel to the axis of the burner core body 38, an included angle between the axis of the inner end face round hole and the axis of the burner core body 38 is gamma, and the deflection angle of the inner end face round hole along the anticlockwise direction is lambda, gamma is more than or equal to 0 DEG and less than or equal to 20 DEG, and lambda is more than or equal to 0 DEG and less than or equal to 15 deg.
The height of the sleeve 53 in this embodiment is h, and the distance from the inlet end of the sleeve 53 to the connection plate 37 is x, 0.ltoreq.x.ltoreq.h/2.
According to the method for burning the graded low-NOx direct flame burner, air and fuel gas are mixed and burned for multiple times according to the proportion through the air guide device 5, the side wall round holes 34 of the burner core 3 and the air diversion holes 63 of the burner block 6, so that the oxygen concentration is reduced in the center of burning flame, reducing atmosphere is formed, NOx generation is restrained, flame rigidity is improved, flame temperature is reduced, NOx generation is reduced, and low emission of the industrial burner is realized.
The air circulation cavity 22 in this embodiment is provided with a heat insulating layer.
All of the azimuth descriptions in this embodiment are based on fig. 1.
The device can reduce the oxygen content in the center of flame through multistage mixed combustion, reduce flame temperature, inhibit NOx from generating, reduce the NOx content in combustion products, the flame temperature distribution is more uniform, and the heating quality is improved.
In addition, it should be noted that the specific embodiments described in the present specification may vary from part to part, from name to name, etc., and the above description in the present specification is merely illustrative of the structure of the present invention. All equivalent or simple changes of the structure, characteristics and principle according to the inventive concept are included in the protection scope of the present patent. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions in a similar manner without departing from the scope of the invention as defined in the accompanying claims.
Claims (5)
1. A staged low NOx direct flame burner characterized by: the gas burner comprises an end cover, a shell, a burner core, a gas pipe, an air guiding device, a burner block, an ignition electrode and a flame detection device, wherein a gas interface and a peeping hole are formed in the end cover;
the burner core comprises a flow limiting baffle, a flanging, a fan ring groove notch, a side wall round hole, an end face round hole, a central round hole, a connecting plate and a burner core body, wherein the flanging is arranged on one side of the burner core body, the connecting plate is arranged on the other side of the burner core body, the fan ring groove notch is arranged on the flanging, the flow limiting baffle and the side wall round hole are arranged on the side wall of the burner core body, the end face round hole and the central round hole are arranged on the connecting plate, and the central round hole is positioned in the middle of the connecting plate;
the gas pipe comprises a secondary gas spraying hole and a multi-stage air distribution hole, a plurality of secondary gas spraying holes and multi-stage air distribution holes are formed in the circumferential direction of the gas pipe, one end of the gas pipe is communicated with the gas interface, and the other end of the gas pipe, the secondary gas spraying holes and the multi-stage air distribution holes are all located in the burner core body;
the air guide device comprises a circular plate, through holes and a sleeve, wherein the circular plate is arranged on the sleeve, the through holes are formed in the circular plate, the circular plate is arranged between the shell and the burner block, the burner core is arranged in the sleeve, and the number of the through holes is 1-2 circles;
the burner block comprises a gas collection chamber, a combustion chamber, a plurality of air diversion holes and a combustion chamber connecting port, wherein the gas collection chamber is cylindrical, a cylindrical cavity is arranged in the combustion chamber, the air diversion holes are provided with conicity, one end of the combustion chamber and one end of the air diversion holes are communicated with the gas collection chamber, the other end of the combustion chamber is communicated with the combustion chamber connecting port, the diameter of one end of the combustion chamber is larger than the diameter of the other end of the combustion chamber, the flow limiting baffle plate and the connecting plate are both positioned in a sleeve, the flanging is positioned in the combustion chamber, and the number of the air diversion holes is 2-8;
the height of the sleeve is h, and the distance between the inlet end of the sleeve and the connecting plate is x, wherein x is more than or equal to 0 and less than or equal to h/2.
2. The staged low NOx direct flame burner of claim 1, wherein: the shape of the burner core body is in a truncated cone shape, the inside of the burner core body is in a cavity structure, an included angle between a bus of the burner core body and the axis of the burner core body is theta, theta is more than or equal to 0 degree and less than or equal to 30 degrees, the number of the fan ring grooves is n, n is more than or equal to 2, and n fan ring grooves are all distributed along the circumferential direction of the burner core body.
3. The staged low NOx direct flame burner of claim 2, wherein: the number of the side wall round holes is 2-3, the number of each circle of side wall round holes is an integer multiple of n, wherein an included angle between the axis of the first circle of side wall round holes and the axis of the burner core body is alpha, alpha is more than or equal to 30 degrees and less than or equal to 90 degrees, included angles between the axes of the other circles of side wall round holes and the axis of the burner core body are beta, beta is more than or equal to 15 degrees and less than or equal to 75 degrees, and the flow limiting baffle is arranged on the right side of the first circle of side wall round holes.
4. The staged low NOx direct flame burner of claim 1, wherein: the number of the end face round holes is 2-3, the end face round holes comprise an outer end face round hole and an inner end face round hole, the axis of the outer end face round hole is parallel to the axis of the burner core body, an included angle between the axis of the inner end face round hole and the axis of the burner core body is gamma, and the deflection angle of the inner end face round hole along the anticlockwise direction is lambda, gamma is more than or equal to 0 degree and less than or equal to 20 degrees, and lambda is more than or equal to 0 degree and less than or equal to 15 degrees.
5. A method of combustion of the staged low NOx direct flame burner of any of claims 1 to 4, characterized by: according to the graded low-NOx direct-flame burner, air and fuel gas are mixed and combusted for multiple times according to the proportion through the air guide device, the side wall round holes of the burner core and the air flow dividing holes of the burner block, so that the oxygen concentration is reduced in the center of a combustion flame, a reducing atmosphere is formed, the generation of NOx is restrained, the flame rigidity is improved, the flame temperature is reduced, the generation of NOx is reduced, and the low emission of the industrial burner is realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810353166.XA CN108534138B (en) | 2018-04-19 | 2018-04-19 | Graded low NOx straight flame burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810353166.XA CN108534138B (en) | 2018-04-19 | 2018-04-19 | Graded low NOx straight flame burner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108534138A CN108534138A (en) | 2018-09-14 |
| CN108534138B true CN108534138B (en) | 2024-02-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810353166.XA Active CN108534138B (en) | 2018-04-19 | 2018-04-19 | Graded low NOx straight flame burner |
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| CN (1) | CN108534138B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110864288A (en) * | 2019-11-22 | 2020-03-06 | 杭州中景科技有限公司 | Low NOx wide flat flame burner |
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| CN2481977Y (en) * | 2001-06-05 | 2002-03-13 | 彭六珠 | Gas gun |
| CN201242159Y (en) * | 2008-06-03 | 2009-05-20 | 天津阿尔法加热设备技术开发有限公司 | Anti-radiation combustor for large power high temperature heating and heat processing furnace |
| CN101634451A (en) * | 2008-07-21 | 2010-01-27 | 上海凌云瑞升燃烧设备有限公司 | Low NOx stepped and staged combustion device |
| CN202092129U (en) * | 2011-05-20 | 2011-12-28 | 中冶华天工程技术有限公司 | Gas burner |
| CN202598516U (en) * | 2012-05-29 | 2012-12-12 | 天华化工机械及自动化研究设计院 | Air classification gas burner for achieving low nitrogen oxide (NOx) discharge at bottom of cracking furnace |
| CN202927840U (en) * | 2012-11-08 | 2013-05-08 | 佛山市科皓燃烧设备制造有限公司 | Nozzle suitable for super-long radiant tube |
| CN205535799U (en) * | 2016-01-26 | 2016-08-31 | 佛山市科皓燃烧设备制造有限公司 | Low NOx of tertiary burning discharges nozzle |
| CN206094082U (en) * | 2016-09-28 | 2017-04-12 | 上海炬联热工装备有限公司 | Burner |
| CN207035120U (en) * | 2017-07-28 | 2018-02-23 | 佛山市科皓燃烧设备制造有限公司 | A kind of special low NOx burner of stainless steel annealing stove |
| CN208487613U (en) * | 2018-04-19 | 2019-02-12 | 杭州中景科技有限公司 | It is classified low NOx updraft burner |
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| CN108534138A (en) | 2018-09-14 |
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