CN110566961A - Central flame-stabilizing combustion head for low-nitrogen combustor - Google Patents
Central flame-stabilizing combustion head for low-nitrogen combustor Download PDFInfo
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- CN110566961A CN110566961A CN201911036284.9A CN201911036284A CN110566961A CN 110566961 A CN110566961 A CN 110566961A CN 201911036284 A CN201911036284 A CN 201911036284A CN 110566961 A CN110566961 A CN 110566961A
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- flame
- air duct
- nozzle
- central
- air
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- 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
- F23C5/00—Disposition of burners with respect to the combustion chamber or to one another; Mounting of burners in combustion apparatus
- F23C5/08—Disposition of burners
- F23C5/32—Disposition of burners to obtain rotating flames, i.e. flames moving helically or spirally
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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
- F23D14/26—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid with provision for a retention flame
-
- 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
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C2202/00—Fluegas recirculation
- F23C2202/10—Premixing fluegas with fuel and combustion air
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Abstract
the invention discloses a central flame stabilizing combustion head for a low ~ nitrogen burner, which comprises an air duct, a gas pipe, a nozzle and a flame stabilizing disc, wherein the gas pipe, the nozzle and the flame stabilizing disc are arranged in an air supply channel in the air duct, a gap between the flame stabilizing disc and the air duct forms a primary air duct, a through hole is formed in the flame stabilizing disc to form a secondary air duct, the air supply amount of the primary air duct is far larger than that of the secondary air duct, the nozzle comprises a central nozzle and a plurality of outer nozzles, a primary air distribution hole facing the primary air duct and a secondary air distribution hole facing the secondary air duct are formed in the outer nozzles, a tertiary air distribution hole is formed in the central nozzle, the primary air distribution hole accounts for 80% ~ 90%, the secondary air distribution hole accounts for 3% ~ 8%, and the tertiary air distribution hole accounts for 3% ~ 8% of all gas sprayed out of the nozzle.
Description
Technical Field
The invention relates to the technical field of gas burners, in particular to a central flame stabilizing combustion head for a low-nitrogen burner.
Background
national environmental protection policy is becoming stricter and the requirement for boiler nitrogen oxide emission is becoming higher and higher. The nitrogen reduction means adopted by the low-nitrogen combustor in the current market comprises an FGR (flue gas Recirculation) technology and a premixed combustion technology, and has the inevitable defect while achieving the nitrogen reduction effect. For example, a burner using the FGR technology is prone to problems such as flue gas condensate corrosion and surge; the problems of low thermal efficiency and tempering risk caused by high oxygen content of flue gas easily occur by adopting a premixed combustion technology.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide the central flame stabilizing combustion head for the low-nitrogen combustor, which has high thermal efficiency, high safety and stable combustion.
the technical scheme is as follows:
a central flame stabilizing combustion head for a low-nitrogen burner comprises an air duct, a gas pipe and a nozzle, wherein the gas pipe and the nozzle are arranged in an air supply channel in the air duct, the gas pipe is connected with the nozzle, a flame stabilizing disc is arranged in the air duct and positioned at the tail end of the air supply channel, the nozzle comprises a central nozzle and a plurality of outer nozzles, the flame stabilizing disc is sleeved on the central nozzle, the outer nozzles are circumferentially and uniformly distributed on the edge of the flame stabilizing disc, the gas pipe comprises a gas main pipe directly connected with the central nozzle and a plurality of gas branch pipes used for connecting the gas main pipe with the outer nozzles, a gap is formed between the flame stabilizing disc and the air duct to form a primary air duct, a through hole is formed in the flame stabilizing disc to form a secondary air duct, the air supply quantity of the primary air duct is far larger than that of the secondary air duct, air distribution holes used for ejecting gas are formed in the outer side of the flame stabilizing disc, a primary air distribution hole facing the primary air duct and a secondary air distribution hole facing the secondary air distribution hole are formed in the central nozzle, the gas distribution holes ejected from the gas nozzle account for 90-8% of the primary air distribution holes, and the secondary air distribution holes for 90-8% of the secondary air distribution.
In a possible implementation manner, a movable adjustable air outlet is sleeved on the inner side of the tail end of the air duct, and the adjustable air outlet moves back and forth relative to the air duct so that the length of the air supply channel is adjustable.
In a possible implementation manner, a pull rod connected with the adjustable air outlet and used for adjusting the adjustable air outlet is further arranged inside the air duct.
in a possible implementation manner, the outlet of the adjustable air outlet is a straight opening or a reduced opening.
in one possible implementation mode, a plurality of spiral-flow sheets are radially and circumferentially and uniformly distributed on the flame stabilizing disc, a certain included angle is formed between each spiral-flow sheet and the corresponding flame stabilizing disc, so that a spiral-flow channel is formed, and the plurality of spiral-flow channels and the plurality of through holes formed in the disc surface of the flame stabilizing disc jointly form the secondary air duct.
in a possible implementation manner, the swirling flow channel further includes a long and narrow through hole formed in the disk surface of the flame stabilizing disk and corresponding to the swirling sheet.
in a possible implementation manner, a swirl flame isolation area is formed between every two swirl plates, and the outer nozzle is located at the outer edge of the swirl flame isolation area.
in a possible implementation mode, each outer nozzle is provided with 1 ~ 3 large holes serving as primary air distribution holes towards the direction of a primary air channel, a plurality of outer nozzles which are mutually spaced are respectively provided with 1 ~ 3 small holes serving as secondary air distribution holes towards the direction of a central nozzle, a plurality of air holes are uniformly distributed on the periphery of the central nozzle and staggered with the secondary air distribution holes in a circumferential angle to serve as tertiary air distribution holes, and the number of the tertiary air distribution holes is smaller than or equal to that of the outer nozzles.
in one possible implementation mode, the number of the gas branch pipes is 4 ~ 12, the aperture of the primary air distribution hole is 10 ~ 25mm, the aperture of the secondary air distribution hole is 3 ~ 10mm, and the aperture of the tertiary air distribution hole is 5 ~ 15 mm.
In one possible implementation, the gas main pipe and the air supply channel are coaxially arranged, and a plurality of gas branch pipes connected to the downstream of the gas main pipe are circumferentially and uniformly distributed by taking the gas main pipe as a center.
In one possible implementation manner, the flame formed by the combustion at the tail end of the combustion head sequentially comprises a flame stabilizing area, a main combustion area and a backflow area from the nozzle to the outside, wherein the main combustion area is formed by mixing and combusting gas supplied by a primary air distribution hole and combustion-supporting air coming out of a primary air duct and is diffusion combustion; the fuel gas supplied by the secondary air distribution hole and the combustion-supporting air from the secondary air duct are mixed with the transition plate and rotate to burn to form the stable flame area, and the stable flame area is oxygen-enriched combustion; the fuel gas supplied by the tertiary gas distribution hole is supplied to the center of the flame flow field and is burnt in the absence of oxygen; the far end of the center of the flame flow field forms a negative pressure backflow area.
in conclusion, the invention provides a central flame stabilizing combustion head for a low-nitrogen combustor, and by adopting the technical scheme, the invention has the following technical effects:
1. The smoke gas internal circulation technology (FIR) and the central flame stabilizing technology are comprehensively utilized, so that the combustion intensity and the combustion stability are ensured while the nitrogen is reduced;
2. By adjusting the adjustable air outlet, the length of the air supply channel can be adjusted to adjust the size and shape of the flame, so that the adjustable air supply channel is suitable for different boiler requirements.
Drawings
In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings used in the description of the embodiment will be briefly introduced below.
FIG. 1 is a cross-sectional view of a central flame-stabilized burner head for a low-nitrogen burner provided in accordance with an embodiment of the present invention;
FIG. 2 is a schematic diagram of the relative position of a gas distribution system and a flame stabilizing disk of a central flame stabilizing burner head for a low-nitrogen burner according to an embodiment of the invention;
FIG. 3 is a schematic view of a flow field of a flame formed by a central flame holding burner for a low nitrogen burner in accordance with an embodiment of the invention.
Detailed Description
in order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
the following will explain details by way of specific examples.
Referring to the structural diagrams shown in fig. 1 and 2, an embodiment of the present invention provides a central flame-stabilized burner head (hereinafter referred to as burner head) for a low-nitrogen burner.
the combustion head provided by the embodiment mainly comprises an air duct 1, a gas pipe 2, a pull rod 3, an adjustable air outlet 4, an outer nozzle 5, a flame stabilizing disc 6 and a central nozzle 7. The gas pipe 2 comprises a gas main pipe 2-0 and a plurality of gas branch pipes 2-1.
wherein, the gas main pipe 2-0 is positioned in an air supply channel formed in the air duct 1 and is coaxially arranged, the downstream of the gas main pipe is communicated with a plurality of, for example, 12 gas branch pipes 2-1 which are uniformly distributed in the circumferential direction, the tail end of the gas main pipe 2-0 is communicated with a central nozzle 7, and the gas branch pipes 2-1 are connected with an outer nozzle 5. The fuel distribution system which is positioned in the air supply channel and used for conveying and distributing fuel gas is formed by a main fuel gas pipe 2-0, a branch fuel gas pipe 2-1, an outer nozzle 5 and a central nozzle 7.
the movable adjustable air outlet 4 is sleeved on the inner side of the tail end of the air duct 1, and an air supply channel is formed inside the air duct 1 and the adjustable air outlet 4 and used for conveying and supplying combustion-supporting air. In the embodiment, the FIR technology is utilized, and the delivered combustion-supporting air can comprise air and flue gas generated by combustion of the combustor. The essence of the FIR technology is that the flue gas generated by combustion is reintroduced into a combustion area to realize the control of the concentration of oxides at the combustion temperature, thereby realizing the effects of reducing the emission of nitrogen oxides and saving energy.
Optionally, the adjustable air outlet 4 is connected to the pull rod 3, and a user can adjust the adjustable air outlet 4 to move relative to the air duct 1 by adjusting the pull rod 3, so as to change the length of the air supply channel.
Optionally, the outlet of the adjustable air outlet 4 is a throat, that is, the diameter is gradually reduced from inside to outside. Or the outlet of the adjustable air outlet can be a straight opening, namely the inner diameter and the outer diameter are consistent.
In this embodiment, the flame stabilizing disc 6 is disc-shaped, and is disposed at the downstream outlet of the air supply channel and is coaxial with the air supply channel. The flame stabilizing disc 6 comprises a disc surface 6-2, a disc edge 6-3 and a vortex sheet 6-1 arranged on the outer side of the disc surface 6-2, a large circular hole is formed in the center of the disc surface 6-2 and sleeved on a central nozzle 7, and a plurality of small through holes 6-4 are formed in the disc surface 6-2 and used as combustion-supporting air channels. A plurality of swirl vanes 6-1, for example 12 swirl vanes are uniformly distributed on the flame stabilizing disc 6 in a radial circumferential direction, and the swirl vanes 6-1 and the disc surface of the flame stabilizing disc 6 form a certain included angle to jointly form a swirl channel. Optionally, a long and narrow through hole 6-5 penetrating through the flame stabilizing disc 6 is further formed in the position, corresponding to the rotational flow sheet 6-1, on the flame stabilizing disc 6, and is used as a component of the rotational flow channel; the combustion-supporting air can pass through the long and narrow through hole 6-5, and the passing combustion-supporting air turns under the action of the vortex sheet 6-1 and flows in a rotating mode along the disc surface of the flame stabilizing disc 6.
In this embodiment, the gap between the flame stabilizing disc 6 and the adjustable air outlet 4 forms a primary air duct 9-1. The flame stabilizing disc 6 is provided with a plurality of small through holes 6-4 and a plurality of rotational flow channels which together form a secondary air duct 9-2.
in this embodiment, each outer nozzle 5 is provided with a plurality of adjacent large holes as primary air distribution holes 8-1 in the primary air duct direction, for example, each outer nozzle 5 is provided with 2 adjacent large holes in the primary air duct direction, and 24 large holes in total are the primary air distribution holes 8-1. A plurality of, for example, 2 small holes are respectively arranged on 6 outer nozzles 5 at intervals in the 12 outer nozzles towards the direction of a central nozzle 7 (namely the direction of a secondary air duct), and the total 12 small holes are used as secondary air distribution holes 8-2. It should be noted that the macro pores and the micro pores are relative sizes therebetween, that is, the pore diameter of the primary air distribution pores is larger than that of the secondary air distribution pores.
In this embodiment, a swirl flame isolation region is formed between every two adjacent swirl plates 6-1 on the flame stabilizing disc 6. The outer nozzle 5 penetrates through the disc edge 6-3 of the flame stabilizing disc 6 and is positioned at the outer edge of the swirl flame isolation area. The swirl flame isolation region has the function of relatively isolating gas injected inwards from the secondary gas distribution holes 8-2 on each outer nozzle 5, preventing high temperature caused by fire crossing generated by secondary gas distribution, and reducing the flame temperature to play a role of nitrogen reduction.
in this embodiment, a plurality of, for example, 6 air holes are uniformly distributed on the central nozzle 7 in the circumferential direction as the tertiary air distribution holes 8-3. The tertiary air distribution holes 8-3 are staggered with the secondary air distribution holes 8-2 which are arranged inwards on the outer nozzle 5 in the circumferential direction. The number of the tertiary air distribution holes 8-3 is less than or equal to the number of the outer nozzles 5. The tertiary air distribution holes 8-3 on the central nozzle 7 are positioned outside the flame stabilizing disc 6, or the flame stabilizing disc 6 is positioned upstream of the opening of the central nozzle 7.
further, in some embodiments,
each outer nozzle can be provided with 1 ~ 3 primary air distribution holes, preferably 2;
wherein each outer nozzle of a plurality of outer nozzles which are mutually spaced can be provided with 1 ~ 3 primary air distribution holes, preferably 2;
The central nozzle can be provided with a plurality of tertiary air distribution holes, the number of the tertiary air distribution holes is not more than that of the outer nozzles, and the preferred number of the tertiary air distribution holes is half of that of the outer nozzles;
the number of the gas branch pipes is 4 ~ 12, preferably 6 ~ 10;
the aperture of the primary air distribution hole is 10 ~ 25mm, preferably 12 ~ 18 mm;
the aperture of the secondary air distribution hole is 3 ~ 10mm, preferably 3 ~ 6 mm;
the aperture of the tertiary air distribution hole is 5 ~ 15mm, preferably 8 ~ 12 mm.
the central flame-stabilizing combustion head for the low-nitrogen combustor in the embodiment has the following working principle:
the fuel distribution system is internally provided with fuel gas, most of the fuel gas is supplied to the primary air channel from a primary air distribution hole (the volume accounts for 80- ~ 90%), a small part of the fuel gas is supplied to the secondary air channel from a secondary air distribution hole (the volume accounts for 3-8%), and a small part of the fuel gas (the volume accounts for about 3-8%) is supplied to the secondary air channel from a tertiary air distribution hole.
Referring to the schematic diagram of the flame flow field shown in fig. 3, the gas supplied from the primary gas distribution hole is mixed with the air from the primary air duct and burned to form a primary combustion area, which is diffusion combustion; the fuel gas from the secondary air distribution hole and the combustion-supporting air from the secondary air duct are mixed and rotate along the circle for combustion, and oxygen-enriched combustion is realized and a flame stabilizing area is formed; the fuel gas injected by the tertiary air distribution holes is supplied to the center of the flow field, and oxygen-deficient combustion is formed due to insufficient air supply in the area; the flame length of the oxygen-deficient combustion center provides a stable fire source for the main combustion area; the far end of the center of the flow field forms a negative pressure backflow area. The pull rod is pulled to drive the adjustable air outlet to move back and forth, and the air distribution ratio can be changed, so that the length and the thickness of flame can be adjusted.
The fuel gas is supplied by dividing the whole flow field into an inner ring, a middle ring and an outer ring to form staged combustion, which is an important means for reducing nitrogen. The inner ring is in lean oxygen combustion, the middle ring is in oxygen-enriched combustion, the outer ring is in diffusion combustion, the combustion deviates from the stoichiometric ratio, the combustion temperature is low, and the method is an important means for reducing nitrogen. Due to the blocking of the flame stabilizing disc, a negative pressure backflow area is formed at the far end of the center of the flow field, and smoke forms backflow in the area to form reducing atmosphere, so that the method is an important means for reducing nitrogen. Through the above means, the effect of nitrogen reduction is achieved.
In conclusion, the invention provides a central flame stabilizing combustion head for a low-nitrogen combustor, and by adopting the technical scheme, the invention has the following technical effects:
1. The smoke gas internal circulation technology (FIR) and the central flame stabilizing technology are comprehensively utilized, so that the combustion intensity and the combustion stability are ensured while the nitrogen is reduced;
2. The flame size and shape can be adjusted by adjusting the length of the combustion air duct, so that the flame burner is suitable for different boiler requirements.
in the above embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to the related descriptions of other embodiments.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; those of ordinary skill in the art will understand that: the technical solutions described in the above embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A central flame-stabilizing combustion head for a low-nitrogen burner comprises an air duct, a gas pipe and a nozzle which are arranged in an air supply channel inside the air duct, and is characterized in that,
A flame stabilizing disc positioned at the tail end of the air supply channel is arranged in the air duct, the nozzle comprises a central nozzle and a plurality of outer nozzles, the flame stabilizing disc is sleeved on the central nozzle, the outer nozzles are circumferentially and uniformly distributed on the edge of the flame stabilizing disc, and the gas pipe comprises a gas main pipe directly connected with the central nozzle and a plurality of gas branch pipes used for connecting the gas main pipe and the outer nozzles;
a gap is formed between the flame stabilizing disc and the air duct to form a primary air duct, a through hole is formed in the flame stabilizing disc to form a secondary air duct, and the air supply quantity of the primary air duct is far larger than that of the secondary air duct;
the central nozzle is provided with a third air distribution hole, the volume ratio of the primary air distribution hole is 80-90%, the volume ratio of the secondary air distribution hole is 3- ~ 8%, and the volume ratio of the third air distribution hole is 3- ~ 8% in all the fuel gas sprayed by the nozzle.
2. The central flame-stabilized burner head for a low-nitrogen burner according to claim 1,
The adjustable air outlet moves back and forth relative to the air cylinder, so that the length of the air supply channel is adjustable.
3. The central flame-stabilized burner head for a low-nitrogen burner according to claim 2,
And a pull rod which is connected with the adjustable air outlet and is used for adjusting the adjustable air outlet is also arranged in the air duct.
4. the central flame-stabilized burner head for a low-nitrogen burner according to claim 2,
The outlet of the adjustable air outlet is a straight opening or a contracted opening.
5. The central flame-stabilized burner head for a low-nitrogen burner according to claim 1,
The flame stabilizing disc is radially and circumferentially and uniformly provided with a plurality of spiral-flow sheets, the spiral-flow sheets and the flame stabilizing disc are in a certain included angle to form a spiral-flow channel, and the plurality of spiral-flow channels and a plurality of through holes formed in the disc surface of the flame stabilizing disc jointly form the secondary air duct.
6. The central flame-stabilized burner head for a low-nitrogen burner according to claim 5,
the rotational flow channel also comprises a long and narrow through hole which is arranged on the surface of the flame stabilizing disc and corresponds to the rotational flow sheet.
7. the central flame-stabilized burner head for a low-nitrogen burner according to claim 5,
A swirl flame isolation area is formed between every two swirl plates, and the outer nozzle is positioned at the outer edge of the swirl flame isolation area.
8. The central flame-stabilized burner head for a low-nitrogen burner according to claim 1,
each outer nozzle is provided with 1 ~ 3 large holes serving as primary air distribution holes towards the direction of a primary air duct, a plurality of outer nozzles which are mutually spaced are respectively provided with 1 ~ 3 small holes serving as secondary air distribution holes towards the direction of a central nozzle, a plurality of air holes are uniformly distributed on the periphery of the central nozzle and staggered with the secondary air distribution holes in a circumferential angle to serve as tertiary air distribution holes, and the number of the tertiary air distribution holes is smaller than or equal to that of the outer nozzles.
9. The central flame-stabilized burner head for a low-nitrogen burner according to claim 7,
the number of the gas branch pipes is 4 ~ 12;
the aperture of the primary air distribution hole is 10 ~ 25 mm;
the aperture of the secondary air distribution hole is 3 ~ 10 mm;
the aperture of the tertiary air distribution hole is 5 ~ 15 mm.
10. The central flame-stabilizing burner head for the low-nitrogen burner as claimed in any one of claims 1 to 9, wherein the flame formed by burning the tail end of the burner head comprises a flame-stabilizing zone, a main combustion zone and a backflow zone from the nozzle to the outside in sequence, wherein the gas supplied by the primary gas distribution hole is mixed with the combustion-supporting air from the primary air duct to be burned to form the main combustion zone, and the main combustion zone is diffusion combustion; the fuel gas supplied by the secondary air distribution hole and the combustion-supporting air from the secondary air duct are mixed with the transition plate and rotate to burn to form the stable flame area, and the stable flame area is oxygen-enriched combustion; the fuel gas supplied by the tertiary gas distribution hole is supplied to the center of the flame flow field and is burnt in the absence of oxygen; the far end of the center of the flame flow field forms a negative pressure backflow area.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911036284.9A CN110566961B (en) | 2019-10-29 | 2019-10-29 | Central flame-stabilizing combustion head for low-nitrogen combustor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911036284.9A CN110566961B (en) | 2019-10-29 | 2019-10-29 | Central flame-stabilizing combustion head for low-nitrogen combustor |
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| CN110566961A true CN110566961A (en) | 2019-12-13 |
| CN110566961B CN110566961B (en) | 2021-03-23 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111115577A (en) * | 2020-02-19 | 2020-05-08 | 李根钧 | Catalytic hydrogen production system and system for reducing nitrogen oxide by burning hydrogen |
| CN112066407A (en) * | 2020-09-11 | 2020-12-11 | 富士特锅炉(天津)有限公司 | Tangential diffusion coupling flue gas extrinsic cycle multi-element adjustable low-nitrogen combustion equipment |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04169708A (en) * | 1990-10-31 | 1992-06-17 | Corona Kk | Low-nox burner |
| CN201885230U (en) * | 2010-12-10 | 2011-06-29 | 上海诺特飞博燃烧设备有限公司 | Flue gas internal reflux homogeneous-combustion low-NOx (nitric oxide) combustor |
| CN202177102U (en) * | 2011-02-27 | 2012-03-28 | 江西中船航海仪器有限公司 | Power diffusion type gas spray gun |
| CN202361383U (en) * | 2011-12-06 | 2012-08-01 | 南京博纳能源环保科技有限公司 | Incinerator for sulfur-containing waste water acid-making system |
| CN108151019A (en) * | 2018-01-26 | 2018-06-12 | 北京水木星源环保科技有限公司 | A kind of burner |
| CN108954305A (en) * | 2018-08-15 | 2018-12-07 | 山东中科天健环保科技有限公司 | A kind of novel hierarchical burning low nitrogen oxide burner structure |
-
2019
- 2019-10-29 CN CN201911036284.9A patent/CN110566961B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04169708A (en) * | 1990-10-31 | 1992-06-17 | Corona Kk | Low-nox burner |
| CN201885230U (en) * | 2010-12-10 | 2011-06-29 | 上海诺特飞博燃烧设备有限公司 | Flue gas internal reflux homogeneous-combustion low-NOx (nitric oxide) combustor |
| CN202177102U (en) * | 2011-02-27 | 2012-03-28 | 江西中船航海仪器有限公司 | Power diffusion type gas spray gun |
| CN202361383U (en) * | 2011-12-06 | 2012-08-01 | 南京博纳能源环保科技有限公司 | Incinerator for sulfur-containing waste water acid-making system |
| CN108151019A (en) * | 2018-01-26 | 2018-06-12 | 北京水木星源环保科技有限公司 | A kind of burner |
| CN108954305A (en) * | 2018-08-15 | 2018-12-07 | 山东中科天健环保科技有限公司 | A kind of novel hierarchical burning low nitrogen oxide burner structure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111115577A (en) * | 2020-02-19 | 2020-05-08 | 李根钧 | Catalytic hydrogen production system and system for reducing nitrogen oxide by burning hydrogen |
| CN112066407A (en) * | 2020-09-11 | 2020-12-11 | 富士特锅炉(天津)有限公司 | Tangential diffusion coupling flue gas extrinsic cycle multi-element adjustable low-nitrogen combustion equipment |
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| Publication number | Publication date |
|---|---|
| CN110566961B (en) | 2021-03-23 |
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