CN111288448A - Ultralow nitrogen burner for oil field heating furnace - Google Patents
Ultralow nitrogen burner for oil field heating furnace Download PDFInfo
- Publication number
- CN111288448A CN111288448A CN202010199048.5A CN202010199048A CN111288448A CN 111288448 A CN111288448 A CN 111288448A CN 202010199048 A CN202010199048 A CN 202010199048A CN 111288448 A CN111288448 A CN 111288448A
- Authority
- CN
- China
- Prior art keywords
- heating furnace
- ultra
- low nitrogen
- nitrogen burner
- rotary vane
- Prior art date
- 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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Links
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 39
- 238000010438 heat treatment Methods 0.000 title claims abstract description 25
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 21
- 239000000945 filler Substances 0.000 claims abstract description 35
- 239000011148 porous material Substances 0.000 claims description 41
- 229910001220 stainless steel Inorganic materials 0.000 claims description 9
- 239000010935 stainless steel Substances 0.000 claims description 9
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 238000002485 combustion reaction Methods 0.000 abstract description 12
- 238000012423 maintenance Methods 0.000 abstract description 12
- 238000005496 tempering Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000005611 electricity Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 40
- 238000010304 firing Methods 0.000 description 7
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 239000000428 dust Substances 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
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
- F23D14/46—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
-
- 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
- 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
- F23D14/72—Safety devices, e.g. operative in case of failure of gas supply
- F23D14/82—Preventing flashback or blowback
Abstract
The invention discloses an ultra-low nitrogen burner for an oil field heating furnace, and belongs to the technical field of burners. The technical scheme is as follows: the utility model provides an ultra-low nitrogen combustor for oil field heating furnace, includes the fan, the urceolus that is linked together with the air outlet of fan, arranges in the urceolus, and with urceolus inner wall assorted porous filler, install in the outer port department of urceolus, the normal direction is parallel with the central line direction of urceolus rotary vane orifice plate, sets up in the outer port department of urceolus, is located the fire needle in the rotary vane orifice plate outside to and the display control unit who is connected with fan and fire needle electricity respectively. The invention has the beneficial effects that: the ultra-low nitrogen burner for the oil field heating furnace provided by the invention has the advantages of sufficient combustion, no blockage, no tempering, low maintenance cost, convenience in maintenance and long maintenance period.
Description
Technical Field
The invention relates to the technical field of burners, in particular to an ultralow-nitrogen burner for an oil field heating furnace.
Background
The low NOx burner or the low nitrogen oxide burner refers to a burner with low NOx emission in the fuel combustion process, and the low NOx burner can reduce the emission of nitrogen oxide in the combustion process. The burner is an important equipment of the industrial furnace, which ensures stable ignition combustion of fuel and complete combustion of fuel, and therefore, it is necessary to start with the burner in order to suppress the amount of NOx produced. The heating furnaces used in oil fields have a plurality of specifications and models, and the liquid quantity, the temperature, the working environment, the natural gas components and the pressure used by the heating furnaces of each well are different. At present, a low-nitrogen burner in the market is designed according to pipeline natural gas and a standard three-pass boiler, the structure of a gas heating furnace of an oil field is far from that of the standard three-pass boiler, the used gas source is complex, the oil field heating furnace is usually operated in the field, the environment is very severe, and the oil field heating furnace is often exposed to weather such as strong wind, dust and the like. The existing low-nitrogen burners have no experience in using oil field heating furnaces, and have no usable products formed.
How to solve the above technical problems is the subject of the present invention.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides the ultralow nitrogen burner for the oil field heating furnace, which has the advantages of sufficient combustion, no blockage, no tempering, low maintenance cost, convenience in maintenance and long maintenance period.
In order to achieve the purpose, the invention provides an ultra-low nitrogen burner for an oil field heating furnace, which comprises a fan, an outer cylinder communicated with an air outlet of the fan, a porous filler arranged in the outer cylinder and matched with the inner wall of the outer cylinder, a rotary vane pore plate arranged at the outer port of the outer cylinder and having a normal direction parallel to the central line direction of the outer cylinder, a firing needle arranged at the outer port of the outer cylinder and positioned outside the rotary vane pore plate, and a display control unit electrically connected with the fan and the firing needle respectively, wherein when the burner is used, premixed gas of combustible gas and air in a certain proportion is blown into the outer cylinder from an air inlet of the fan through the fan, the premixed gas is fully and uniformly mixed through the porous filler and the rotary vane pore plate in sequence and then is ignited and combusted through the firing needle, so that the low NOx combustion of the combustible gas is realized, thousands of small holes can better evenly distribute and mix gas, so that the combustion is more sufficient, the flame is shorter, the thickness is thinner, the color is more blue, meanwhile, the fan supplies air to better resist the strong wind weather and the dust, and the blockage and the tempering can not occur.
The invention is characterized in that the porous filler extends to the inner side of the rotary vane pore plate from the inner port of the outer cylinder and is close to the rotary vane pore plate, so that the filling length of the porous filler is ensured, and the stroke of the premixed gas in the porous filler is further ensured, so that the premixed gas can be uniformly mixed.
The invention is characterized in that the porous filler is provided with a plurality of layers of stainless steel honeycomb plates which are uniformly overlapped along the central line direction of the outer cylinder, the diameter of each layer of stainless steel honeycomb plate is matched with the inner diameter of the outer cylinder, the material is convenient to obtain, the assembly and disassembly are convenient, and the cleaning and maintenance are convenient.
The invention is characterized in that the holes of two adjacent layers of stainless steel honeycomb plates are communicated in a staggered way, so that the premixed gas can advance along a zigzag and winding channel when passing through the porous filler, the stroke of the premixed gas is increased, and the uniform mixing of the premixed gas is further ensured.
The invention is characterized in that the rotary vane pore plate comprises a plate body, a plurality of through holes which are uniformly arranged on the plate body and penetrate through the two side surfaces of the plate body, and a plurality of torsion blades which are uniformly arranged at the edge of the plate body along the circumferential direction, wherein under the action of a fan, premixed gas passes through the holes close to the center of the porous filler and then passes through the rotary vane pore plate along the axial direction of the outer cylinder through the through holes; after the premixed gas passes through holes close to the edge of the porous filler, namely, after the premixed gas passes through the holes at the positions of the porous filler corresponding to the twisting blades, the premixed gas passes through the rotating blade pore plate in a cyclone mode through the rotating blade, so that the mixed gas is facilitated to diffuse from the middle part with higher concentration to the edge part with lower concentration, the concentration of the mixed gas passing through the rotating blade pore plate is uniform, and the low-NOx full combustion of the gas is further ensured.
The specific characteristics of the invention are that the center normal of the plate body is coincident with the center line of the outer cylinder, so that the distance between the corresponding part of the twisted blade and the center line of the outer cylinder is the same, namely the position of the porous filler which passes through the rotary vane pore plate in a cyclone form is ensured to be the same as the distance between the center line of the outer cylinder and the position of the porous filler which passes through the rotary vane pore plate, and the concentration of the mixed gas passing through the rotary vane pore plate is further ensured.
The invention is characterized in that the rotary vane pore plate is arranged at the outer port of the outer cylinder through a connecting piece, and a certain gap is left between the multiple holes of the rotary vane pore plate and the porous filler while the connection strength of the rotary vane pore plate is verified, thereby ensuring the smooth air path.
The invention is characterized in that the connecting piece comprises a connecting ring matched with the inner wall of the outer barrel, a connecting bolt positioned at the center of the connecting ring and a plurality of connecting columns uniformly arranged between the connecting ring and the connecting bolt, the connecting ring is welded on the inner wall of the outer barrel, and the connecting bolt is provided with the rotary vane pore plate.
The invention is particularly characterized in that the inner side surface of the plate body is fixed on the connecting bolt, and preferably, the plate body is connected with the connecting bolt in a welding manner.
The anti-loosening connecting structure is characterized in that the connecting bolt is a bolt, a connecting hole penetrating through two side faces of the plate body is formed in the center of the plate body, a screw rod of the bolt penetrates through the connecting hole and is fixedly connected with the connecting hole through a nut matched with the bolt, and preferably, the number of the nuts is two, and the nuts are connected with the bolt in a loosening-preventing mode.
The invention is characterized in that a control box is arranged outside the display control unit and the fan, a box cover which is detachably connected is arranged at the top of the control box, so that the maintenance and inspection are convenient, and a display screen and a control button of the display control unit are arranged on the box cover.
A plurality of vent holes are formed in one side wall of the control box.
The fan is characterized in that a connecting cylinder is arranged between the air outlet of the fan and the outer cylinder, one end of the connecting cylinder is fixedly connected with the inner end part of the outer cylinder, the connecting cylinder is fixed on the control box, and the connecting cylinder is arranged, so that the outer cylinder is convenient to disassemble and assemble, and the maintenance cost is reduced.
The invention is also characterized in that the ratio of the diameter of the rotary vane pore plate to the inner diameter of the outer cylinder is set as 1: 1-1.5.
The invention is particularly characterized in that the area of the plate body on the rotary vane pore plate is 40-80%.
The present invention is also specifically characterized in that the pore diameter of the through-hole is larger than the pore diameter of the porous filler.
The invention is also characterized in that the torsion angle of the torsion blade is set to be 15-60 degrees.
According to a particular feature of the invention, the number of said blades is 12-18.
The invention has the beneficial effects that: the invention is provided with the fan to supply gas, and through the porous filler and thousands of small holes, gas can be better and uniformly distributed, so that the combustion is more sufficient, the flame is shorter, the thickness is thinner, the color is bluer, and meanwhile, the strong wind weather and dust thereof can be better resisted, and the blockage and the tempering can not occur; the porous filler is arranged into a plurality of layers of stainless steel honeycomb plates, so that materials are convenient to obtain, and the porous filler is convenient to disassemble and assemble and is convenient to clean and maintain; set up the spiral leaf orifice plate, help the gaseous edge portion diffusion that is lower from the higher middle part of concentration to concentration after the mixture to make the gas mixture concentration through the spiral leaf orifice plate even, further guarantee gaseous low NOx fully burns. In addition, the invention has simple structure, high operation efficiency and long maintenance period, and only needs to be respectively disassembled and flushed by water when cleaning and maintaining, thereby being very convenient and low in maintenance cost, and being suitable for popularization and application in oil fields.
Drawings
FIG. 1 is a schematic structural diagram of the present invention:
FIG. 2 is a schematic view of a portion A of FIG. 1;
FIG. 3 is a schematic view of the present invention in partial cross-section;
FIG. 4 is a schematic structural view of a rotary vane orifice plate according to the present invention;
fig. 5 is a schematic structural view of the connector of the present invention.
Wherein the reference numerals are: 1. an outer cylinder; 2. rotating a leaf pore plate; 2-1, a plate body; 2-2, through holes; 2-3, twisting the blade; 2-4, connecting holes; 3. a porous filler; 4. firing needles; 5. a connecting member; 5-1, connecting rings; 5-2, connecting columns; 5-3, connecting bolt; 6. a control box; 6-1, a box cover; 6-2, vent holes; 7. a display control unit; 8. a connecting cylinder; 9. and a nut.
Detailed Description
In order to clearly illustrate the technical features of the present solution, the present solution is explained below by way of specific embodiments.
Example 1
Referring to fig. 1 to 5, an embodiment of the present invention provides an ultra-low nitrogen burner for an oil field heating furnace, including a blower, an outer barrel 1 communicated with an air outlet of the blower, a porous filler 3 disposed in the outer barrel 1 and matched with an inner wall of the outer barrel 1, a vane orifice 2 installed at an outer port of the outer barrel 1 and having a normal direction parallel to a center line direction of the outer barrel 1, a firing pin 4 disposed at an outer port of the outer barrel 1 and located outside the vane orifice 2, and a display control unit 7 electrically connected to the blower and the firing pin 4, wherein when in use, a premixed gas of a certain proportion of combustible gas and air is blown into the outer barrel 1 from an air inlet of the blower through the blower, and the premixed gas is ignited and combusted by the firing pin 4 after being sufficiently and uniformly mixed by the porous filler 3 and the vane orifice 2 in sequence, so as to realize low NOx combustion of the combustible gas.
The display control unit 7 and the fan are externally provided with a control box 6, the top of the control box is provided with a box cover 6-1 which is detachably connected, so that maintenance and inspection are convenient, and a display screen and a control button of the display control unit 7 are arranged on the box cover 6-1.
One side wall of the control box 6 is provided with a plurality of vent holes 6-2.
A connecting cylinder 8 is arranged between an air outlet of the fan and the outer cylinder 1, one end of the connecting cylinder 8 is fixedly connected with the inner end part of the outer cylinder 1, and the connecting cylinder 8 is fixed on the control box 6.
The diameter ratio of the rotary vane pore plate 2 to the outer cylinder 1 is set as 1: 1-1.5.
The area of the plate body 2-1 on the rotary vane pore plate 2 is set to be 40-80%.
The pore diameter of the through-hole 2-2 is larger than that of the porous filler 3.
The twist angle of the twist blades 2-3 is set to 15-60 degrees.
The number of the twisting blades 2-3 is set to 12-18.
Example 2
Referring to fig. 3, the embodiment 1 is the same as the embodiment 1 except that: the porous filler 3 extends to the inner side of the rotary vane pore plate 2 from the inner port of the outer barrel 1 and is close to the rotary vane pore plate 2, so that the filling length of the porous filler 3 is ensured, and the stroke of the premixed gas in the porous filler 3 is further ensured, so that the premixed gas can be uniformly mixed.
Example 3
Referring to fig. 2 and 3, the embodiment 2 is the same as the embodiment 2 except that: the porous filler 3 is provided with a plurality of layers of stainless steel honeycomb plates which are uniformly overlapped along the central line direction of the outer barrel 1, the diameter of each layer of stainless steel honeycomb plate is matched with the inner diameter of the outer barrel 1, materials are convenient to obtain, and the manufacturing is convenient.
The holes of two adjacent layers of stainless steel honeycomb plates are communicated in a staggered manner, so that the premixed gas passes through the porous filler 3 and then moves along the zigzag passage, the stroke of the premixed gas is increased, and the uniform mixing of the premixed gas is further ensured.
Example 4
Referring to fig. 1, 2 and 4, the rest of the embodiment 1 is the same as that of embodiment 1, except that: the rotary vane pore plate 2 comprises a plate body 2-1, a plurality of through holes 2-2 which are uniformly formed in the plate body 2-1 and penetrate through the two side faces of the plate body, and a plurality of torsion blades 2-3 which are uniformly arranged at the edge of the plate body 2-1 along the circumferential direction, and under the action of a fan, premixed gas passes through a hole close to the center of the porous filler 3 and then passes through the rotary vane pore plate 2 along the axial direction of the outer barrel 1 through the through holes 2-2; after the premixed gas passes through holes close to the edge of the porous filler 3, namely, after the premixed gas passes through holes at the positions of the porous filler 3 corresponding to the twisting blades 2-3, the premixed gas passes through the rotating blade pore plate 2 in a cyclone mode through the rotating blade 2-3, so that the mixed gas is favorably diffused from the middle part with higher concentration to the edge part with lower concentration, the concentration of the mixed gas passing through the rotating blade pore plate 2 is uniform, and the low-NOx full combustion of the gas is further ensured.
The center normal of the plate body 2-1 is coincident with the center line of the outer cylinder 1, so that the distance between the corresponding part of the torsional blade 2-3 and the center line of the outer cylinder 1 is the same, namely the position of the porous filler 3 corresponding to the rotary vane pore plate 2 in a cyclone form is ensured to be the same as the distance between the center line of the outer cylinder 1, and the uniform concentration of the mixed gas passing through the rotary vane pore plate 2 is further ensured.
Example 5
Referring to fig. 1 and 2, the embodiment 4 is the same as the embodiment 4 except that: the rotary vane pore plate 2 is arranged at the outer port of the outer barrel 1 through the connecting piece 5, and when the connection strength of the rotary vane pore plate 2 is proved, a certain gap is left between the multiple holes of the rotary vane pore plate 2 and the porous filler 3, so that the air path is ensured to be smooth.
Example 6
Referring to fig. 5, the embodiment 5 is the same as the embodiment 5 except that: the connecting piece 5 comprises a connecting ring 5-1 matched with the inner wall of the outer barrel 1, a connecting bolt 5-3 positioned at the center of the connecting ring 5-1 and a plurality of connecting columns 5-2 uniformly arranged between the connecting ring 5-1 and the connecting bolt 5-3, the connecting ring 5-1 is welded on the inner wall of the outer barrel 1, and a rotary vane pore plate 2 is arranged on the connecting bolt 5-3.
Example 7
Referring to fig. 1, 2 and 5, the embodiment 6 is the same as the embodiment 6 except that: the connecting bolt 5-2 is set as a bolt, the center of the plate body 2-1 is provided with a connecting hole 2-4 penetrating through two side surfaces of the plate body, a screw rod of the bolt penetrates through the connecting hole 2-4 and is fixedly connected with the connecting hole through a nut 9 matched with the bolt, and preferably, the number of the nuts 9 is two and is connected with the bolt in a loosening prevention mode.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The ultra-low nitrogen burner for the oil field heating furnace is characterized by comprising a fan, an outer barrel (1) communicated with an air outlet of the fan, a porous filler (3) arranged in the outer barrel (1) and matched with the inner wall of the outer barrel (1), a rotary vane pore plate (2) arranged at the outer port of the outer barrel (1) and having a normal direction parallel to the central line direction of the outer barrel (1), a fire striking needle (4) arranged at the outer port of the outer barrel (1) and positioned outside the rotary vane pore plate (2), and a display control unit (7) respectively electrically connected with the fan and the fire striking needle (4).
2. The ultra-low nitrogen burner for the oil field heating furnace according to claim 1, wherein the porous filler (3) extends from the inner port of the outer cylinder (1) to the inner side of the rotary vane pore plate (2) near the rotary vane pore plate (2).
3. The ultra-low nitrogen burner for the oilfield heating furnace according to claim 1 or 2, wherein the porous filler (3) is provided with a plurality of layers of stainless steel honeycomb plates which are uniformly stacked along the direction of the center line of the outer cylinder (1).
4. The ultra-low nitrogen burner for the oil field heating furnace as claimed in claim 3, wherein the holes of the stainless steel honeycomb plate of two adjacent layers are communicated with each other in a staggered manner.
5. The ultra-low nitrogen burner for an oilfield heating furnace according to any one of claims 1 to 4, wherein the rotary vane orifice plate (2) comprises a plate body (2-1), a plurality of through holes (2-2) uniformly opened in the plate body (2-1) and penetrating both side surfaces thereof, and a plurality of twisted vanes (2-3) uniformly arranged at the edge of the plate body (2-1) in a circumferential direction.
6. The ultra-low nitrogen burner for an oilfield heating furnace according to claim 5, wherein a center normal line of the plate body (2-1) coincides with a center line of the outer cylinder (1).
7. The ultra-low nitrogen burner for the oil field heating furnace according to claim 5 or 6, wherein the rotary vane pore plate (2) is installed at the outer port of the outer cylinder (1) through a connecting piece (5).
8. The ultra-low nitrogen burner for an oilfield heating furnace according to claim 7, wherein the connection member (5) comprises a connection ring (5-1) fitted to an inner wall of the outer cylinder (1), a connection pin (5-3) located at a center of the connection ring (5-1), and a plurality of connection columns (5-2) uniformly arranged between the connection ring (5-1) and the connection pin (5-3).
9. The ultra-low nitrogen burner for an oilfield heating furnace according to claim 8, wherein the inner side surface of the plate body (2-1) is fixed to the connection bolt (5-3).
10. The ultra-low nitrogen burner for the oil field heating furnace of claim 8, characterized in that the connection bolt (5-2) is a bolt, the center of the plate body (2-1) is provided with a connection hole (2-4) penetrating through two side surfaces of the plate body, and the screw rod of the bolt penetrates through the connection hole (2-4) and is fixedly connected with the connection hole through a nut (9) matched with the bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010199048.5A CN111288448B (en) | 2020-03-20 | 2020-03-20 | Ultralow nitrogen burner for oil field heating furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010199048.5A CN111288448B (en) | 2020-03-20 | 2020-03-20 | Ultralow nitrogen burner for oil field heating furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111288448A true CN111288448A (en) | 2020-06-16 |
| CN111288448B CN111288448B (en) | 2022-03-29 |
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| CN202010199048.5A Expired - Fee Related CN111288448B (en) | 2020-03-20 | 2020-03-20 | Ultralow nitrogen burner for oil field heating furnace |
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| CN106168378A (en) * | 2016-07-11 | 2016-11-30 | 北京航空航天大学 | A kind of premix classification strong eddy flow low stain gas burner |
| CN106642103A (en) * | 2016-10-21 | 2017-05-10 | 浙江大学 | Porous medium burner for gas fuel |
| CN107676781A (en) * | 2017-05-17 | 2018-02-09 | 温岭市百然机械有限公司 | Pressure mixing structure applied to low nitrogen short flame burner |
| CN207179655U (en) * | 2017-08-30 | 2018-04-03 | 山西煜能科技开发有限公司 | A kind of methanol burner |
| EP3597998A2 (en) * | 2018-07-19 | 2020-01-22 | Brunswick Corporation | Forced-draft pre-mix burner device for a vehicle heater |
| CN108844068A (en) * | 2018-09-03 | 2018-11-20 | 哈尔滨电气股份有限公司 | A kind of full premix surface-type burner gas-air mixing machine |
| CN109611835A (en) * | 2019-01-08 | 2019-04-12 | 华侨大学 | A kind of reversed turbulent burner of multi-level gas |
| CN209893382U (en) * | 2019-01-10 | 2020-01-03 | 中科蓝创节能环保设备（天津）有限公司 | Multi-section metal fiber burner |
| CN109764333A (en) * | 2019-02-12 | 2019-05-17 | 扬州斯大锅炉有限公司 | The super low NO of internal combustion drum type brake |
| CN209893384U (en) * | 2019-03-04 | 2020-01-03 | 张崇春 | Explosion-proof tempering-resistant low-nitrogen combustion head with cyclone |
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