CN220771108U - Special ultralow nitrogen oxide combustor of top firing hydrogen - Google Patents
Special ultralow nitrogen oxide combustor of top firing hydrogen Download PDFInfo
- Publication number
- CN220771108U CN220771108U CN202322596516.4U CN202322596516U CN220771108U CN 220771108 U CN220771108 U CN 220771108U CN 202322596516 U CN202322596516 U CN 202322596516U CN 220771108 U CN220771108 U CN 220771108U
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- mixing chamber
- baffle
- pipe
- gas
- nitrogen oxide
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- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 title claims abstract description 87
- 239000001257 hydrogen Substances 0.000 title claims abstract description 21
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 21
- 238000010304 firing Methods 0.000 title claims abstract description 18
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims description 17
- 238000002156 mixing Methods 0.000 claims abstract description 52
- 238000002485 combustion reaction Methods 0.000 claims abstract description 39
- 239000007789 gas Substances 0.000 claims abstract description 33
- 238000003756 stirring Methods 0.000 claims abstract description 10
- 238000011084 recovery Methods 0.000 claims description 22
- 239000007921 spray Substances 0.000 claims description 11
- 150000002431 hydrogen Chemical class 0.000 claims description 3
- 238000004064 recycling Methods 0.000 abstract description 21
- 238000005192 partition Methods 0.000 abstract description 12
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 9
- 239000003546 flue gas Substances 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 7
- 239000002699 waste material Substances 0.000 abstract description 4
- 239000002737 fuel gas Substances 0.000 abstract description 3
- 125000004435 hydrogen atom Chemical class [H]* 0.000 abstract 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 12
- 239000003345 natural gas Substances 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 239000000446 fuel Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000779 smoke Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 238000010405 reoxidation reaction Methods 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
Abstract
The utility model discloses an ultralow nitrogen oxide combustor special for top firing hydrogen, which comprises a combustor body, an air blower and a recycling assembly, wherein a first partition plate and a second partition plate are fixedly connected to the inside of the combustor body respectively, and the first partition plate and the second partition plate divide the inside of the combustor body into a first mixing chamber, a second mixing chamber and an ignition chamber respectively. According to the utility model, the combustor is provided with the first mixing chamber for stirring and mixing the gas and the second mixing chamber for increasing the gas and air travelling path, so that the mixing effect of the fuel gas and the air is greatly increased, the thickness of a flame surface is reduced, the residence time of the flue gas in a high-temperature area is shortened, the generation amount of nitrogen oxides is reduced, and the combustion flue gas can be recycled through the recycling assembly consisting of the recycling ring, the annular groove, the recycling pipe and the small-sized circulating fan, so that the waste of resources is reduced, the heat capacity of the combustion flue gas is large, the combustion temperature is reduced, and the generation of nitrogen oxides can be further reduced.
Description
Technical Field
The utility model relates to the technical field of top firing hydrogen burners, in particular to an ultralow nitrogen oxide burner special for top firing hydrogen.
Background
At present, fossil energy hydrogen production is still a main source for obtaining hydrogen energy, and a top-firing type combustor is the most used type of hydrogen production combustor, and raw material natural gas, fuel natural gas and air are required to be mixed for combustion; nitrogen oxides produced by combustion of general fuels come mainly from two aspects: firstly, the oxidation of nitrogen in the air used for combustion (combustion air), and secondly, the thermal decomposition and reoxidation of the nitrides contained in the fuel during combustion, the former being the main source of nitrogen oxides in most combustion devices, we refer to such nitrogen oxides as "thermally reactive nitrogen oxides", so in order to reduce the production of nitrogen oxides, it is necessary to control the nitrogen oxidation that occurs during combustion of the combustion air.
The Chinese patent discloses a special ultralow nitrogen oxide burner for top firing hydrogen, the issued publication number is CN218972663U, and the issued patent skillfully arranges two groups of mutually independent fuel gas systems of PSA tail gas and natural gas on a burner for staged combustion to reduce the generation of nitrogen oxides; however, the actual effect of the comparison document is poor, and the utility model can simultaneously recycle and recycle the flue gas and reduce the residence time of the flue gas in a high temperature area so as to greatly reduce the generation of nitrogen oxides, and the effect is more superior.
Disclosure of Invention
The utility model aims to provide an ultralow nitrogen oxide burner special for top firing hydrogen, which solves the problems in the background technology.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
the utility model provides a special ultralow nitrogen oxide combustor of hydrogen is fired on top, includes combustor body, air fan and retrieves circulation subassembly, the inside of combustor body is fixedly connected with baffle one and baffle two respectively, baffle one and baffle two separate the inside of combustor body into mixing chamber one, mixing chamber two and ignition room respectively, the top intercommunication of mixing chamber one has the flange pipe, the inside of mixing chamber one is provided with the pivot, and the outer wall fixed mounting of mixing chamber one bottom has servo motor, the outer wall fixed mounting of pivot has a plurality of stirring leaf, the inside upper and lower side symmetry fixedly connected with baffle of mixing chamber two equal fixedly connected with of adjacent side of baffle a plurality of vortex swash plate, the inside of ignition room is provided with the gas and is responsible for, the gas is responsible for the intercommunication has a plurality of burning nozzle, and the end of gas to be responsible for installs a plurality of some igniters, retrieve circulation subassembly including retrieving ring and four retrieve the pipe, one side of retrieving the ring is provided with annular groove, every retrieve the inside of pipe and all install small-size circulation fan.
As a further scheme of the utility model: the burner body is connected with the air blower through a bolt, and the output end of the burner body is communicated with the first mixing chamber of the air blower.
As still further aspects of the utility model: the first baffle plate is provided with a through hole, the first mixing chamber is communicated with the second mixing chamber through the through hole, the two baffle plates form a Y-shaped channel, and the turbulence inclined plate forms an included angle of 60 degrees with the horizontal plane.
As still further aspects of the utility model: the one end of the gas main pipe far away from the combustion spray pipe penetrates through the second baffle plate and is positioned between the two baffle plates, the quantity of the combustion spray pipes is equal to that of the igniters, and each combustion spray pipe corresponds to each igniter one by one.
As still further aspects of the utility model: the recovery ring is fixedly arranged in the ignition chamber, the circle center of the recovery ring coincides with the center of the end head of the combustion spray pipe, the recovery pipe penetrates through the recovery ring and is communicated with the annular groove, and one end of the recovery pipe, which is far away from the recovery ring, is positioned in the first mixing chamber.
As still further aspects of the utility model: the air blower, the servo motor, the igniter and the small circulating fan are all externally connected with a power supply.
Compared with the prior art, the utility model has the beneficial effects that: according to the combustor, the mixing effect of fuel gas and air is greatly improved through the first mixing chamber for mixing and stirring the gas and the second mixing chamber for increasing the gas and air travelling path, the thickness of a flame surface is reduced, the residence time of smoke in a high-temperature area is shortened, so that the generation amount of nitrogen oxides is reduced, and the recycling assembly consisting of the recycling ring, the annular groove, the recycling pipe and the small-sized circulating fan can recycle combustion smoke, so that the waste of resources is reduced, the heat capacity of the combustion smoke is high, the combustion temperature is reduced, and the generation of nitrogen oxides can be further reduced.
Drawings
FIG. 1 is a schematic diagram of a top firing hydrogen specific ultra-low NOx burner.
Fig. 2 is a cross-sectional view of a burner body in a top-firing hydrogen-dedicated ultra-low nitrogen oxide burner.
FIG. 3 is a schematic diagram of the gas main and recovery cycle components of the top firing hydrogen specific ultra-low NOx burner.
The marks in the figure: 1. a burner body; 2. an air blower; 3. connecting a flange pipe; 4. a servo motor; 5. a combustion nozzle; 6. an igniter; 7. recycling the circular ring; 8. a first partition board; 9. a second partition board; 10. a first mixing chamber; 11. a second mixing chamber; 12. an ignition chamber; 13. a rotating shaft; 14. stirring the leaves; 15. a baffle; 16. turbulence sloping plates; 17. a through hole; 18. a gas main pipe; 19. a recovery pipe; 20. an annular groove.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-3, in the embodiment of the utility model, an ultralow nitrogen oxide combustor special for top firing hydrogen comprises a combustor body 1, an air blower 2 and a recycling assembly, wherein the combustor body 1 is connected with the air blower 2 through bolts, an output end of the combustor body 1 is communicated with a first mixing chamber 10 of the air blower 2, a first partition plate 8 and a second partition plate 9 are fixedly connected to the inside of the combustor body 1 respectively, the first partition plate 8 and the second partition plate 9 divide the inside of the combustor body 1 into a first mixing chamber 10, a second mixing chamber 11 and an ignition chamber 12 respectively, a connecting flange pipe 3 is communicated with the top of the first mixing chamber 10, a rotating shaft 13 is arranged in the first mixing chamber 10, a servo motor 4 is fixedly arranged on the outer wall of the bottom of the first mixing chamber 10, a plurality of stirring blades 14 are fixedly arranged on the outer wall of the rotating shaft 13, baffles 15 are symmetrically and fixedly connected to the upper side and lower side of the inside of the mixing chamber 11, a plurality of sloping plates 16 are fixedly connected to each other on the adjacent side of the two baffles 15, a gas main pipe 18 is arranged in the inside of the second ignition chamber 12, the gas main pipe 18 is communicated with a plurality of combustion main pipes 5, the gas main pipe 18 is provided with a plurality of igniters 6, the gas main pipe 6 is provided with a plurality of igniter circular ring-shaped main pipes 7 and a recycling fan 19, and a recycling circular main pipe 19 is provided with a plurality of circular power supply grooves 19 are respectively, and a recycling circular air blower is arranged on each circular main pipe is provided with a circular ring-shaped air recycling assembly, and a recycling device is provided with a small recycling device, and a recycling device is provided with a recycling device.
Referring to fig. 2, a through hole 17 is formed in the first partition 8, the first mixing chamber 10 is communicated with the second mixing chamber 11 through the through hole 17, two baffles 15 form a Y-shaped channel, and the turbulence inclined plate 16 forms an included angle of 60 degrees with the horizontal plane.
By controlling the stirring of the gas in the first mixing chamber 10, the mixing effect of the gas and the air is increased, and by the second mixing chamber 11, the travel distance of the gas mixture is increased, and the vertical movement track is increased, so that the mixing effect of the gas and the air is further increased.
Referring to fig. 1 and 3, one end of the main gas pipe 18, which is far away from the combustion nozzle 5, penetrates through the second partition plate 9 and is located between the two baffle plates 15, the number of the combustion nozzles 5 and the number of the igniters 6 are equal, and each combustion nozzle 5 corresponds to each igniter 6 one by one.
The gas mixture conveniently enters the combustion spray pipes 5 through the gas main pipe 18, and the gas sprayed out of each combustion spray pipe 5 is conveniently ignited.
Referring to fig. 2, the recovery ring 7 is fixedly installed inside the ignition chamber 12, the center of the recovery ring 7 coincides with the center of the ends of all the combustion nozzles 5, the recovery pipe 19 penetrates the recovery ring 7 and is communicated with the annular groove 20, and one end of the recovery pipe 19 away from the recovery ring 7 is located inside the first mixing chamber 10.
The recycling assembly consisting of the recycling ring 7, the annular groove 20, the recycling pipe 19 and the small-sized circulating fan can recycle the combustion flue gas, so that the energy waste is reduced, the heat capacity of the combustion flue gas is large, the combustion temperature is reduced, and the nitrogen oxides are reduced.
The working principle of the utility model is as follows: in the use process, firstly, raw material natural gas and fuel natural gas for hydrogen production are conveyed into a first mixing chamber 10 through a connecting flange pipe 3, an air blower 2 does work to convey external air into the first mixing chamber 10, a servo motor 4 does work to drive a rotating shaft 13 to rotate, the rotating shaft 13 drives a stirring blade 14 to rotate, gas stirring is carried out on the interior of the first mixing chamber 10, the natural gas and the air are fully mixed, the mixed gas enters a Y-shaped channel formed by two baffles 15 through a through hole 17, the travel path of the mixed gas is increased through a turbulent inclined plate 16, the vertical movement track path is increased, the mixing effect of the gas and the air is further increased, the thickness of a flame surface can be reduced, the residence time of the gas in the flame surface, namely a high temperature area is shortened under the condition of unchanged combustion load, so that the generation amount of nitrogen oxides is reduced, the mixed gas enters the interior of a combustion spray pipe 5 through a gas main pipe 18, and an igniter 6 works to ignite and burn; meanwhile, the small circulating fan does work to recycle part of combustion flue gas to the inside of the first mixing chamber 10 sequentially through the annular groove 20 and the recycling pipe 19, the heat capacity of the combustion flue gas is large, the combustion temperature is reduced, nitrogen oxides can be reduced, and the waste of resources is reduced.
Although the present utility model has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present utility model.
Claims (6)
1. The utility model provides a special ultralow nitrogen oxide combustor of top firing hydrogen, includes combustor body (1), air fan (2) and retrieves circulation subassembly, its characterized in that: the inside of combustor body (1) is fixedly connected with baffle one (8) and baffle two (9) respectively, baffle one (8) and baffle two (9) separate the inside of combustor body (1) into mixing chamber one (10), mixing chamber two (11) and ignition room (12) respectively, the top intercommunication of mixing chamber one (10) has flange pipe (3), the inside of mixing chamber one (10) is provided with pivot (13), and the outer wall fixed mounting of mixing chamber one (10) bottom has servo motor (4), the outer wall fixed mounting of pivot (13) has a plurality of stirring leaf (14), the inside upside symmetry fixedly connected with baffle (15) of mixing chamber two (11), two the adjacent side of baffle (15) is a plurality of vortex swash plate (16) all fixedly connected with, the inside of ignition room (12) is provided with gas main pipe (18), be responsible for (18) intercommunication has a plurality of burning (5), and gas (18) end installs a plurality of igniter (6), the outer wall fixed mounting of pivot (13) has a plurality of stirring leaf (14), the inside of mixing chamber two (11) is provided with annular ring (19) and is retrieved (7) and is retrieved and is responsible for annular (20) one side of pipe recovery groove (20), and a small circulating fan is arranged in each recovery pipe (19).
2. The ultra-low nitrogen oxide burner special for top firing hydrogen according to claim 1, wherein: the burner body (1) is connected with the air blower (2) through bolts, and the output end of the burner body (1) is communicated with a first mixing chamber (10) of the air blower (2).
3. The ultra-low nitrogen oxide burner special for top firing hydrogen according to claim 1, wherein: the baffle I (8) is provided with a through hole (17), the mixing chamber I (10) is communicated with the mixing chamber II (11) through the through hole (17), the two baffle plates (15) form a Y-shaped channel, and the turbulence inclined plate (16) forms an included angle of 60 degrees with the horizontal plane.
4. The ultra-low nitrogen oxide burner special for top firing hydrogen according to claim 1, wherein: one end of the gas main pipe (18) far away from the combustion spray pipe (5) penetrates through the second baffle plate (9) and is positioned between the two baffle plates (15), the quantity of the combustion spray pipes (5) and the quantity of the igniters (6) are equal, and each combustion spray pipe (5) corresponds to each igniter (6) one by one.
5. The ultra-low nitrogen oxide burner special for top firing hydrogen according to claim 1, wherein: the recovery ring (7) is fixedly arranged in the ignition chamber (12), the center of the recovery ring (7) coincides with the center of the end of the combustion spray pipe (5), the recovery pipe (19) penetrates through the recovery ring (7) and is communicated with the annular groove (20), and one end, far away from the recovery ring (7), of the recovery pipe (19) is positioned in the first mixing chamber (10).
6. The ultra-low nitrogen oxide burner special for top firing hydrogen according to claim 1, wherein: the air blower (2), the servo motor (4), the igniter (6) and the small circulating fan are externally connected with power supplies.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322596516.4U CN220771108U (en) | 2023-09-22 | 2023-09-22 | Special ultralow nitrogen oxide combustor of top firing hydrogen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322596516.4U CN220771108U (en) | 2023-09-22 | 2023-09-22 | Special ultralow nitrogen oxide combustor of top firing hydrogen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220771108U true CN220771108U (en) | 2024-04-12 |
Family
ID=90617298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322596516.4U Active CN220771108U (en) | 2023-09-22 | 2023-09-22 | Special ultralow nitrogen oxide combustor of top firing hydrogen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220771108U (en) |
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2023
- 2023-09-22 CN CN202322596516.4U patent/CN220771108U/en active Active
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