CN218379402U - Combustor with variable oxygen concentration - Google Patents
Combustor with variable oxygen concentration Download PDFInfo
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- CN218379402U CN218379402U CN202221921314.1U CN202221921314U CN218379402U CN 218379402 U CN218379402 U CN 218379402U CN 202221921314 U CN202221921314 U CN 202221921314U CN 218379402 U CN218379402 U CN 218379402U
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- 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
Abstract
The utility model discloses a burner with variable oxygen concentration, which comprises a burning head, a primary combustion-supporting component and a secondary combustion-supporting component, wherein the burning head is provided with a through hole, and one end of the burning head is fixed and communicated with a burning chamber; one ends of the primary air pipe, the primary oxygen pipe and the gas pipe are all embedded into the through holes; the combustion head is provided with a vent hole, the secondary air inlet box is fixed and communicated with the combustion head, the secondary oxygen inlet box is fixed and communicated with a secondary oxygen nozzle, and the secondary oxygen nozzle corresponds to and is communicated with the vent hole. The utility model discloses a set up combustion-supporting subassembly and the combustion-supporting subassembly of secondary once, this application is under the requirement to different temperature fields, through the mode and the adjustable oxygen concentration of staged combustion, makes the combustor operate with best economic mode all the time, and the fuel consumption is little and the thermal efficiency is high in the unit interval.
Description
Technical Field
The utility model relates to a combustor field, more specifically say so and relate to a combustor of variable oxygen concentration.
Background
The variable oxygen concentration combustion technology aims at the requirements of different temperature fields, and the combustion device is enabled to operate in an optimal economic mode all the time by proportioning combustion improvers with different oxygen concentrations, namely the proportioning of air and oxygen.
The existing burner has high fuel consumption and is not easy to reach the optimal thermal efficiency, the oxygen concentration can not be adjusted or the related structure for adjusting the oxygen concentration has reasonable design, and the generation of NOx can not be further reduced while the flame is kept stable.
Therefore, how to provide a variable oxygen concentration burner to overcome the above problems is a problem that needs to be solved by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention provides a burner with variable oxygen concentration.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a variable oxygen concentration burner, secured to a combustion chamber, comprising:
the combustion head is provided with a through hole penetrating through two end parts of the combustion head, one end of the combustion head is fixed with the combustion chamber, and the through hole is communicated with the inside of the combustion chamber;
the primary combustion-supporting assembly comprises a primary air pipe, a primary oxygen pipe and a fuel gas pipe which are sequentially sleeved together from outside to inside; one ends of the primary air pipe, the primary oxygen pipe and the fuel gas pipe are all embedded into the through hole, the other end of the fuel gas pipe is a fuel gas inlet, a gap between the primary air pipe and the primary oxygen pipe is a primary air inlet channel, and a gap between the primary oxygen pipe and the fuel gas pipe is a primary oxygen inlet channel;
the secondary combustion-supporting assembly comprises a secondary air inlet box and a secondary oxygen inlet box which are fixed together, a plurality of vent holes penetrating through two end parts of the combustion head are formed in the combustion head, the vent holes are communicated with the inside of the combustion chamber, the secondary air inlet box is fixed with the combustion head and communicated with the vent holes, a plurality of secondary oxygen nozzles are fixed on the secondary oxygen inlet box and communicated with the secondary oxygen inlet box, the secondary oxygen nozzles correspond to and are communicated with the vent holes after penetrating through the secondary air inlet box, a secondary air inlet is formed in the secondary air inlet box, and a secondary oxygen inlet is formed in the secondary oxygen inlet box.
Can know via foretell technical scheme, compare with prior art, the utility model discloses a variable oxygen concentration's combustor, the utility model discloses a set up combustion-supporting subassembly and the combustion-supporting subassembly of secondary once, this application is under the requirement to different temperature fields, and through hierarchical combustion mode, oxygen concentration is adjustable, makes the combustor operate with best economic mode all the time, and fuel consumption is little and the thermal efficiency is high in the unit interval.
Preferably, the combustion head is far away from one end of the gas pipe is provided with a groove in the middle, and the through hole corresponds to the bottom of the groove. Above-mentioned setting makes can carry out a burning earlier after the gas gets into the recess, then reentrant combustion chamber is inside to carry out abundant burning, improves the combustion efficiency of gas.
Preferably, the gas pipe the primary oxygen pipe and the tube length of primary air pipe reduces gradually, the primary air pipe with the primary oxygen pipe is kept away from the one end of burner head is all sealed, primary air inlet has been seted up on the pipe wall of primary air pipe, primary air inlet with primary air inlet channel intercommunication, primary oxygen inlet has been seted up on the pipe wall of primary oxygen pipe, primary oxygen inlet with primary oxygen inlet channel intercommunication. This arrangement facilitates the delivery of primary air and primary oxygen into the primary air intake passage and the primary oxygen intake passage, respectively.
Preferably, the combustion head is cylindrical, the hole center line of the vent hole is obliquely arranged relative to the shaft axis of the combustion head, and the vent holes are uniformly arranged along the circumferential direction of the combustion head. This setting ensures that secondary oxygen and secondary air can the even injection to the combustion chamber in, improves the postcombustion effect.
Preferably, still include the end plate, the end plate shutoff is in once the oxygen pipe with the gas pipe is close to the one end of through-hole, the end plate is seted up gas hole and a plurality of once oxygen hole on a circular slab and its face, and is a plurality of once the oxygen hole is followed the circumference of end plate is evenly arranged, the gas hole with the gas pipe position corresponds and communicates, and is a plurality of once the oxygen hole all with once oxygen inlet channel communicates. This setting is convenient for on the one hand to be fixed with the end connection of oxygen pipe and gas pipe, and on the other hand ensures that oxygen can evenly spray once.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic view of a variable oxygen concentration burner configuration;
FIG. 2 is a schematic cross-sectional view of a variable oxygen concentration combustor.
In the figure:
1 is a combustion head, 10 is a through hole, 11 is a vent hole, 12 is a groove, 2 is a primary air pipe, 20 is a primary air inlet, 3 is a primary oxygen pipe, 30 is a primary oxygen inlet, 4 is a fuel gas pipe, 5 is a secondary air inlet box, 50 is a secondary air inlet, 6 is a secondary oxygen inlet box, 60 is a secondary oxygen inlet, 7 is a secondary oxygen nozzle, 8 is an end plate, 80 is a fuel gas hole, and 81 is a primary oxygen hole.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be understood that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model discloses a combustor of variable oxygen concentration, the utility model discloses a combustion-supporting subassembly and secondary combustion-supporting subassembly are once set up, this application through hierarchical combustion mode under the requirement to different temperature fields, and oxygen concentration is adjustable, makes the combustor move with best economic mode all the time, and fuel consumption is little and the thermal efficiency is high in the unit interval to this combustor is at the in-process of burning, and the noise is low and flame can remain stable, the production of at utmost reduction NOx.
Examples
Referring to fig. 1-2, the present invention discloses a whole and partial structure schematic diagram of an embodiment of the present invention, specifically discloses a variable oxygen concentration burner, which is fixed with a combustion chamber, and comprises:
the burner head 1, the burner head 1 takes the form of cylinder and it is pressed and made by refractory earth, offer the through hole 10 to link up its both ends on the burner head 1, the cross section of the through hole 10 is round, one end of the burner head 1 is fixed with combustion chamber, the through hole 10 communicates with inside of combustion chamber;
the primary combustion-supporting assembly comprises a primary air pipe 2, a primary oxygen pipe 3 and a fuel gas pipe 4 which are sequentially sleeved together from outside to inside, and the sections of the primary air pipe 2, the primary oxygen pipe 3 and the fuel gas pipe 4 are all circular and are coaxially arranged;
one ends of a primary air pipe 2, a primary oxygen pipe 3 and a fuel gas pipe 4 are all embedded into the through hole 10, the other end of the fuel gas pipe 4 is a fuel gas inlet, an annular gap between the primary air pipe 2 and the primary oxygen pipe 3 is a primary air inlet channel, and an annular gap between the primary oxygen pipe 3 and the fuel gas pipe 4 is a primary oxygen inlet channel;
the secondary combustion-supporting assembly comprises a secondary air inlet box 5 and a secondary oxygen inlet box 6 which are fixed together, the secondary air inlet box 5 and the secondary oxygen inlet box 6 are both annular box bodies, and a primary air pipe 2 sequentially penetrates through the secondary air inlet box 5 and the secondary oxygen inlet box 6;
a plurality of vent holes 11 penetrating through two end parts of the combustion head 1 are formed in the combustion head 1, the cross section of each vent hole 11 is circular, the vent holes 11 are communicated with the inside of the combustion chamber, the secondary air inlet box 5 is coaxially fixed with the combustion head 1 and communicated with the vent holes 11, a plurality of secondary oxygen nozzles 7 are fixedly communicated on the secondary oxygen inlet box 6, the secondary oxygen nozzles 7 are the same as the vent holes 11 in number, the secondary oxygen nozzles 7 correspond to and are communicated with the vent holes 11 after penetrating through the secondary air inlet box 5, a secondary air inlet 50 is formed in the secondary air inlet box 5, and a secondary oxygen inlet 60 is formed in the secondary oxygen inlet box 6.
Further specifically, the one end that the gas pipe 4 was kept away from to combustion head 1 is seted up fluted 12 between two parties, and through-hole 10 corresponds with the tank bottom position of recess 12, can carry out a burning earlier after the gas gets into recess 12, then gets into the inside abundant burning that carries on of combustion chamber again.
Further specifically, the tube lengths of the gas tube 4, the primary oxygen tube 3 and the primary air tube 2 are gradually reduced, one ends of the primary air tube 2 and the primary oxygen tube 3, which are far away from the burner head 1, are all sealed, the primary air inlet 20 is formed in the tube wall of the primary air tube 2, the primary air inlet 20 is communicated with the primary air inlet channel, the primary oxygen inlet 30 is formed in the tube wall of the primary oxygen tube 3, and the primary oxygen inlet 30 is communicated with the primary oxygen inlet channel.
More specifically, the hole center lines of the vent holes 11 are arranged obliquely with respect to the shaft center line of the combustion head 1, and the plurality of vent holes 11 are arranged uniformly in the circumferential direction of the combustion head 1.
Further specifically, still include end plate 8, the shutoff of end plate 8 is in the one end that oxygen pipe 3 and gas pipe 4 are close to through-hole 10 once, and end plate 8 is a circular slab and has seted up gas hole 80 and a plurality of oxygen hole 81 on its face, and a plurality of oxygen hole 81 are evenly arranged along end plate 8's circumference once, and gas hole 80 corresponds and feeds through with gas pipe 4 positions, and a plurality of oxygen hole 81 all feed through with oxygen inlet channel once.
The combustor is at work: the maximum injection speed of the fuel gas when the fuel gas passes through the fuel gas hole 80 is 20m/s; the maximum injection speed of the primary oxygen when the primary oxygen passes through the primary oxygen hole 81 is not more than 60m/s; the maximum jetting speed of the primary air when the primary air is jetted out from the primary air inlet channel does not exceed 30m/s; the jet speed of the secondary oxygen passing through the secondary oxygen nozzle 7 is 20m/s; the jet speed of the secondary air sprayed from the vent hole 11 is not more than 40m/s;
the combustor is divided into the following combustion working conditions:
pure oxygen mode: when the fuel gas is combusted, only primary oxygen and secondary oxygen are supplied, wherein the proportion of the primary oxygen to the total oxygen is 15% -50%, the primary oxygen needs to be adjusted according to the size of a hearth, the flame temperature and the rigidity requirement, a certain amount of cooling air needs to be blown into a primary air inlet channel, a secondary air inlet box 5 and a secondary oxygen inlet box 6 under the working condition, the blowing pressure is larger than the pressure of a combustion chamber, and the purpose is to prevent the backflow of high-temperature flue gas;
air mode: when the fuel gas is combusted, only primary air and secondary air are supplied, wherein the proportion of the primary air in the total combustion air is not lower than 35 percent, and a certain amount of cooling air needs to be blown into the primary oxygen inlet channel, the secondary air inlet box 5 and the secondary oxygen inlet box 6 under the working condition for the same reason;
low oxygen concentration mode: when the fuel gas is combusted, primary air and secondary air are supplied, and the proportion of the primary air is not lower than 35%; only the primary oxygen is turned on and the secondary oxygen is turned off.
In the high oxygen concentration mode: when the fuel gas is combusted, primary oxygen, secondary oxygen, primary air and secondary air are all supplied, wherein the primary oxygen accounts for 15-30% of the total proportion; the proportion of the primary air in the total combustion air is not less than 50%.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (5)
1. A variable oxygen concentration burner secured to a combustion chamber, comprising:
the combustion head (1) is provided with a through hole (10) penetrating through two end parts of the combustion head (1), one end of the combustion head (1) is fixed with the combustion chamber, and the through hole (10) is communicated with the inside of the combustion chamber;
the primary combustion-supporting assembly comprises a primary air pipe (2), a primary oxygen pipe (3) and a gas pipe (4) which are sequentially sleeved together from outside to inside; one ends of the primary air pipe (2), the primary oxygen pipe (3) and the fuel gas pipe (4) are all embedded into the through hole (10), the other end of the fuel gas pipe (4) is a fuel gas inlet, a gap between the primary air pipe (2) and the primary oxygen pipe (3) is a primary air inlet channel, and a gap between the primary oxygen pipe (3) and the fuel gas pipe (4) is a primary oxygen inlet channel;
the secondary combustion-supporting assembly comprises a secondary air inlet box (5) and a secondary oxygen inlet box (6) which are fixed together, a plurality of vent holes (11) penetrating through two end portions of the combustion head (1) are formed in the combustion head (1), the vent holes (11) are communicated with the interior of the combustion chamber, the secondary air inlet box (5) is fixed with the combustion head (1) and communicated with the vent holes (11), a plurality of secondary oxygen nozzles (7) are fixed on the secondary oxygen inlet box (6) and communicated with the secondary oxygen inlet box, the secondary oxygen nozzles (7) penetrate through the secondary air inlet box (5) and correspond to and are communicated with the vent holes (11), a secondary air inlet (50) is formed in the secondary air inlet box (5), and a secondary oxygen inlet (60) is formed in the secondary oxygen inlet box (6).
2. The burner of claim 1, wherein the end of the burner head (1) away from the gas pipe (4) is centrally provided with a groove (12), and the through hole (10) corresponds to the bottom of the groove (12).
3. The burner with variable oxygen concentration according to claim 1, wherein the length of the gas pipe (4), the primary oxygen pipe (3) and the primary air pipe (2) is gradually reduced, the ends of the primary air pipe (2) and the primary oxygen pipe (3) far away from the burner head (1) are sealed, the wall of the primary air pipe (2) is provided with a primary air inlet (20), the primary air inlet (20) is communicated with the primary air inlet channel, the wall of the primary oxygen pipe (3) is provided with a primary oxygen inlet (30), and the primary oxygen inlet (30) is communicated with the primary oxygen inlet channel.
4. The burner of claim 1, wherein the burner head (1) is cylindrical, the hole center line of the vent hole (11) is obliquely arranged relative to the shaft axis of the burner head (1), and a plurality of vent holes (11) are uniformly arranged along the circumferential direction of the burner head (1).
5. The burner with variable oxygen concentration according to claim 1, further comprising an end plate (8), wherein the end plate (8) is sealed at one end of the primary oxygen pipe (3) and one end of the gas pipe (4) close to the through hole (10), the end plate (8) is a circular plate, and a gas hole (80) and a plurality of primary oxygen holes (81) are formed in the surface of the circular plate, the plurality of primary oxygen holes (81) are uniformly arranged along the circumferential direction of the end plate (8), the gas hole (80) corresponds to and communicates with the gas pipe (4), and the plurality of primary oxygen holes (81) are communicated with the primary oxygen inlet channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221921314.1U CN218379402U (en) | 2022-07-25 | 2022-07-25 | Combustor with variable oxygen concentration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221921314.1U CN218379402U (en) | 2022-07-25 | 2022-07-25 | Combustor with variable oxygen concentration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218379402U true CN218379402U (en) | 2023-01-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221921314.1U Active CN218379402U (en) | 2022-07-25 | 2022-07-25 | Combustor with variable oxygen concentration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218379402U (en) |
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2022
- 2022-07-25 CN CN202221921314.1U patent/CN218379402U/en active Active
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