CN216408961U - Combustor and combustion device - Google Patents
Combustor and combustion device Download PDFInfo
- Publication number
- CN216408961U CN216408961U CN202123215257.3U CN202123215257U CN216408961U CN 216408961 U CN216408961 U CN 216408961U CN 202123215257 U CN202123215257 U CN 202123215257U CN 216408961 U CN216408961 U CN 216408961U
- Authority
- CN
- China
- Prior art keywords
- combustion
- gas
- assembly
- porous medium
- layer
- 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.)
- Active
Links
Images
Abstract
The application relates to the field of combustors, in particular to a combustor and a combustion device. The combustor comprises a mixed gas conveying pipe, a first combustion assembly, a shell, a fuel gas conveying pipe, a combustion-supporting gas conveying pipe and a second combustion assembly. The first combustion assembly and the second combustion assembly are both positioned in the shell, and the first combustion assembly comprises a porous medium combustion layer; the combustion-supporting gas conveying pipe and the fuel gas conveying pipe are both connected with the second combustion assembly; the second combustion assembly is positioned below the flue gas of the porous medium combustion layer, so that the flue gas of the porous medium combustion layer can flow through the second combustion assembly. The insufficiently combusted smoke after the porous medium combustion layer is guided by the shell to flow downwards to the area where the second combustion assembly is located for continuous combustion, so that the combustor has the advantages of sufficient combustion and uniform heat dissipation; in the combustion zone of the second combustion assembly, a local high pressure is created due to the elevated temperature of the air, causing the flue gases to be entrained and blended in the zone, further completing combustion while reducing the flame released.
Description
Technical Field
The application relates to the field of combustors, in particular to a combustor and a combustion device.
Background
Porous media combustion is a combustion mode in which porous media are added to a burner. The combustor added with the porous medium enables the temperature of a combustion area to tend to be uniform due to the existence of three heat exchange modes of convection, heat conduction and radiation, and keeps a relatively stable temperature gradient. The porous medium combustion has the advantages of high combustion rate, good combustion stability, good gas adaptability, low pollutant discharge in flue gas and the like.
But the porous medium combustion layer has the problem of insufficient combustion in the combustion process.
SUMMERY OF THE UTILITY MODEL
An object of the embodiment of the application is to provide a combustor and a combustion device, which aim to improve the problem that the existing combustor has insufficient combustion in the combustion process.
The application provides a combustor, combustor include gas mixture conveyer pipe, first combustion assembly, shell, gas conveyer pipe, combustion-supporting gas conveyer pipe and second combustion assembly. The mixed gas conveying pipe is used for conveying mixed gas of fuel gas and combustion-supporting gas; the first combustion assembly is positioned in the shell and comprises a porous medium combustion layer, and the porous medium combustion layer is connected with the mixed gas conveying pipe; the gas conveying pipe is used for conveying gas; the combustion-supporting gas conveying pipe is used for conveying combustion-supporting gas; a second combustion assembly located within the housing; the combustion-supporting gas conveying pipe and the fuel gas conveying pipe are both connected with the second combustion assembly; the second combustion assembly is positioned below the porous medium combustion layer, so that the smoke of the porous medium combustion layer can flow through the second combustion assembly.
After the mixed gas is combusted in the porous medium combustion layer, the mixed gas has the advantages of good combustion stability, good gas adaptability, uniform heat dissipation, low nitrogen oxide in smoke, less flame and the like; the flue gas after the combustion of the porous medium combustion layer contains insufficiently combusted gas, the gas flows downwards to the area where the second combustion assembly is located under the guidance of the shell, the raw material gas of the combustion area of the second combustion assembly is fuel gas and combustion-supporting gas, and the insufficiently combusted gas is more sufficiently combusted in the combustion area; in the combustion area of the second combustion assembly, the smoke in the first combustion area is heated again, local high pressure is formed due to the rising of the temperature of the air, the smoke is sucked and blended in the combustion area, and the released flame is reduced while the combustion is complete, so that the second combustion assembly has the characteristic of no flame or less flame.
In some embodiments of the present application, the first combustion assembly further comprises a porous plate, one end of the porous plate being in communication with the mixture delivery pipe and the other end being in communication with the porous medium combustion layer.
In some embodiments of the present application, the perforated plate has a cross-sectional area that is smaller than a cross-sectional area of the mixture-conveying pipe.
In some embodiments of the present application, the first combustion assembly further comprises an insulating shell, and the porous plate and the porous medium combustion layer are both located within the insulating shell.
In some embodiments of the present application, the aperture of the perforated plate is less than or equal to 1.2 mm.
In some embodiments of the present application, the burner further comprises a gas mixing chamber connected to the housing, and the gas mixture delivery pipe and the porous medium combustion layer are both in communication with the gas mixing chamber; and an air distribution plate is arranged in the air mixing chamber.
In some embodiments of the present application, the combustion-supporting gas delivery pipe is sleeved outside the gas delivery pipe;
the porous medium combustion layer surrounds the periphery of the combustion-supporting gas conveying pipe.
In some embodiments of the present application, the combustion gas delivery pipe is sleeved outside the combustion-supporting gas delivery pipe;
the porous medium combustion layer surrounds the periphery of the fuel gas conveying pipe.
In some embodiments of the present application, the combustor further comprises a sleeve; the second combustion assembly comprises a gas nozzle and a swirl plate; the swirl plate is arranged at the outlet of the gas delivery pipe, and the gas delivery pipe and the combustion-supporting gas delivery pipe are both connected with a gas spray head; the gas nozzle is positioned in the sleeve.
The application also provides a combustion device, which comprises an air supply assembly and the combustor connected with the air supply assembly.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
FIG. 1 illustrates a schematic structural view of a first perspective of a combustor provided by an embodiment of the present application;
FIG. 2 illustrates a schematic structural view of a second perspective of a combustor provided by embodiments of the present application;
FIG. 3 is a schematic structural diagram illustrating a third perspective view of a combustor provided by an embodiment of the present application;
FIG. 4 illustrates a cross-sectional view of a combustor along a first cross-section provided by an embodiment of the present application;
FIG. 5 illustrates a cross-sectional view of a burner taken along a second cross-section provided by an embodiment of the present application;
fig. 6 shows an enlarged view of a portion a in fig. 4.
Icon: 100-a burner; 110-a first combustion assembly; 111-heat preservation shell; 112-a porous media combustion layer; 113-a multi-well plate; 120-a second combustion assembly; 121-a gas burner; 122-a spinning disk; 123-an igniter; 130-mixed gas conveying pipe; 140-a housing; 141-flue gas outlet; 150-a gas delivery pipe; 160-combustion-supporting gas delivery pipe; 170-air mixing chamber; 171-gas distribution plate; 180-sleeve.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. 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 application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the embodiments of the present application, it is to be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like, refer to the orientation or positional relationship as shown in the drawings, or as conventionally placed in use of the product of the application, or as conventionally understood by those skilled in the art, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be considered as limiting the present application.
Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Examples
Fig. 1 shows a schematic structural view of a first view of a combustor 100 provided in an embodiment of the present application, fig. 2 shows a schematic structural view of a second view of the combustor 100 provided in an embodiment of the present application, fig. 3 shows a schematic structural view of a third view of the combustor 100 provided in an embodiment of the present application, fig. 4 shows a cross-sectional view of the combustor 100 provided in an embodiment of the present application along a first cross-section, and fig. 5 shows a cross-sectional view of the combustor 100 provided in an embodiment of the present application along a second cross-section. Referring to fig. 1-5, the present embodiment provides a burner 100; the burner 100 has two combustion assemblies, a first combustion assembly 110 and a second combustion assembly 120, and the first combustion assembly 110 and the second combustion assembly 120 are supplied with air using separate air supply assemblies.
Specifically, combustor 100 includes a first combustion assembly 110, a second combustion assembly 120, a mixture delivery tube 130, a housing 140, a fuel delivery tube 150, and an oxidant delivery tube 160. The mixed gas delivery pipe 130 is connected with the first combustion assembly 110, the fuel gas delivery pipe 150 and the combustion-supporting gas delivery pipe 160 are both connected with the second combustion assembly 120, and the first combustion assembly 110 and the second combustion assembly 120 are both positioned in the shell 140.
The mixed gas delivery pipe 130 is used for delivering mixed gas of fuel gas and combustion-supporting gas; the gas delivery pipe 150 is used for delivering gas; the combustion-supporting gas conveying pipe 160 is used for conveying combustion-supporting gas; in the present application, the combustion-supporting gas may be air, oxygen, etc., and the fuel gas may be natural gas, and it should be noted that, in the present application, the type of combustion-supporting gas and the type of fuel gas are not limited.
In the present application, the first combustion assembly 110 forms a combustion zone, and the second combustion assembly 120 forms a combustion zone; the flue gas combusted by the first combustion assembly 110 can be combusted again after passing through the combustion zone formed by the second combustion assembly 120.
Fig. 6 is an enlarged view of a portion a in fig. 4, and referring to fig. 1 to 6, the first combustion assembly 110 includes a heat-insulating case 111, a porous medium combustion layer 112, and a porous plate 113.
The porous medium combustion layer 112 is connected with the porous plate 113, and the heat preservation shell 111 is arranged around the porous medium combustion layer 112 and the porous plate 113; the mixed gas conveyed by the mixed gas conveying pipe 130 is divided into a plurality of gas flows by the porous plate 113 and then flows to the porous medium combustion layer 112 to be combusted after reaching the ignition point; after the combustible gas is combusted in the porous medium combustion layer 112, the flue gas is discharged along the inner wall of the casing 140 to the opening (flue gas outlet 141) of the casing 140. The main function of the insulating shell 111 is to prevent the heat of the porous medium combustion layer 112 and the porous plate 113 from being emitted from the side, so that the heat utilization rate can be improved. In the present embodiment, the porous medium combustion layer 112 has a substantially circular ring shape, and the combustion flames thereof have a ring-shaped distribution; the porous medium combustion layer 112 is a silicon carbide porous ceramic medium burner having excellent high temperature resistance. The porous plate 113 is made of alumina; in some embodiments of the present application, the aperture of the perforated plate 113 is less than or equal to 1.2mm, for example, the aperture may be 1.2mm, 1mm, 0.8mm, 0.6mm, and the like. The aperture of the perforated plate 113 is less than or equal to 1.2mm, which is less than the quenching diameter of natural gas combustion, so that the perforated plate 113 has an anti-backfire effect.
In the present embodiment, the porous plate 113 has a cross section in the direction perpendicular to the conveying direction of the mixture gas, and the sum of the hole areas of the aforementioned cross sections of the porous plate 113 is smaller than the cross-sectional area of the mixture gas conveying pipe 130; in other words, the sum of the areas of all holes of the cross section of the porous plate 113 in the direction perpendicular to the hole extending direction is smaller than the area of the cross section of the mixture transport pipe 130; since the sum of the areas of the holes of the porous plate 113 is smaller than the cross-sectional area of the mixture delivery pipe 130, the pressure rises after the gas enters the porous plate 113 from the mixture delivery pipe 130, so that the flow rate of the mixture entering each hole of the porous plate 113 can be kept consistent; thereby making the heat emitted from each portion of the porous medium combustion layer 112 more uniform.
The following examples are made with respect to parameters in use of the first combustion assembly 110 of the embodiments of the present application:
the flow rate of the mixed gas in the porous alumina plate 113 is greater than the combustion rate of the natural gas, and the flow rate of the mixed gas in the pores of the porous alumina plate 113 should be greater than 3m/s, for example, 5m/s, 6m/s, etc., so that the risk of tempering the porous alumina plate 113 can be further reduced.
The mixture in the mixture delivery pipe 130 has a high excess air ratio, and the excess air ratio of the mixture in the mixture delivery pipe 130 is 0.6 to 0.95, for example, 0.6, 0.7, 0.75, 0.8, 0.85, 0.9, 0.95, and the like. If the excess air coefficient is low, the combustion temperature in the porous medium combustion layer 112 is reduced, and the combustion atmosphere is a reducing atmosphere, so that the porous medium combustion layer 112 is oxidized, and the service life of the porous medium combustion layer is reduced; meanwhile, the combustion temperature is low, and the reducing atmosphere also causes higher emission of nitrogen oxides. The mixed gas with the excess air coefficient of 0.6-0.95 is selected, so that the problems can be effectively solved.
It should be noted that, the above examples are only given for the first combustion assembly 110, and the use thereof is not limited to the above parameters, and the specific parameters can be selected according to the use scenario.
It should be noted that in other embodiments of the present application, the material of the porous medium combustion layer 112 may also be other refractory materials, and is not limited to silicon carbide; the shape of the porous medium combustion layer 112 can also be set according to the use scene of the burner 100, and is not limited to the aforementioned ring shape; accordingly, the material of the porous plate 113 may be other material. The aperture of the perforated plate 113 may be larger than 1.2mm, for example, may be 3mm, 2mm, 1.5mm, and the like. The pore size of each well of the multi-well plate 113 may or may not be identical.
Further, in the present embodiment, in order to make the mixed gas entering the first combustion assembly 110 burn more fully, the burner 100 further includes a gas mixing chamber 170, an outlet of the mixed gas delivery pipe 130 is communicated with the gas mixing chamber 170, and the gas in the mixed gas delivery pipe 130 enters the gas mixing chamber 170 for temporary storage and remixing before entering the first combustion assembly 110; the gas mixing chamber 170 has an annular chamber and the perforated plate 113 is mounted at the outlet end of the gas mixing chamber 170 such that the output gas stream from the gas mixing chamber 170 enters the porous media combustion layer 112 through the perforated plate 113. The air mixing chamber 170 has the function of uniformly mixing air again, and the air mixing chamber 170 also has the function of temporarily storing the air-mixed air.
In this embodiment, in order to make the mixed gas flow entering the porous medium combustion layer 112 more uniform, a gas distribution plate 171 is disposed in the gas mixing chamber 170, the gas distribution plate 171 is located at the opening of the mixed gas delivery pipe 130, and the gas flow output by the mixed gas delivery pipe 130 is blocked by the gas distribution plate 171 and then fills the gas mixing chamber 170; it is possible to avoid a large local air flow into the porous medium combustion layer 112 due to a large air flow velocity, and to reduce the uniformity of heat radiated through the porous medium combustion layer 112.
It should be noted that, in some embodiments of the present application, the gas distribution plate 171 or the gas mixing chamber 170 may not be provided in the combustor 100. Further, the first combustion assembly 110 may not be provided with the porous plate 113 and the heat insulating case 111, and may be provided with only the porous medium combustion layer 112, with the mixture delivery pipe 130 directly connected to the porous medium combustion layer 112.
As mentioned above, the second combustion assembly 120 is positioned within the housing 140 along the direction of the flow of the flue gas of the porous media combustion layer 112, and the second combustion assembly 120 is positioned below the porous media combustion layer 112, so that the flue gas of the porous media combustion layer 112 can flow through the region where the second combustion assembly 120 is located.
The combustion-supporting gas delivery pipe 160 and the fuel gas delivery pipe 150 are both connected to the second combustion assembly 120, and the fuel gas output by the fuel gas delivery pipe 150 is combusted in the area where the second combustion assembly 120 is located under the combustion supporting of the combustion-supporting gas output by the combustion-supporting gas delivery pipe 160.
In this embodiment, the second combustion assembly 120 includes a gas nozzle 121, a swirl plate 122 and an igniter 123, and the combustion-supporting gas delivery pipe 160 and the gas delivery pipe 150 are connected to the gas nozzle 121. The swirl plate 122 is located at the outlet of the gas delivery pipe 150, and the igniter 123 is connected to the gas nozzle 121 to provide an ignition point for the gas nozzle. The swirl plate 122 has an effect of dispersing the gas output from the gas delivery pipe 150, so that the gas can be sufficiently combusted.
In this application, the burner 100 further includes a sleeve 180, the gas nozzle 121 is located in the sleeve 180, and the sleeve 180 has a function of gathering the gas output from the combustion-supporting gas delivery pipe 160 and the gas delivery pipe 150, so that the gas output from the two pipes can be sufficiently mixed and then combusted in the sleeve 180. The material of the sleeve 180 may be, for example, silicon carbide, and it is understood that in other embodiments of the present application, the material of the sleeve 180 may be other refractory materials.
It should be noted that in other embodiments of the present application, the swirl plate 122 may not be provided in the second combustion assembly 120, and accordingly, the igniter 123 is not necessary, and the igniter 123 may not be provided, and other ignition devices may be provided independently when the burner 100 is used.
In the present embodiment, the outer casing 140 has a circular truncated cone shape, the outer casing 140 has a flue gas outlet 141, and the second combustion assembly 120 is closer to the flue gas outlet 141 than to the porous medium combustion layer 112; the porous medium burner 112 must pass through the second combustion assembly 120 under the guidance of the inner wall of the casing 140.
In the embodiment, the porous medium burner 112 is annular, the porous medium combustion layer 112 is arranged around the inner circumferential wall of the casing 140, and the second combustion assembly 120 is located at the radially middle position of the casing 140; the porous medium gas burner 112 is arranged around the second combustion assembly 120 in a surrounding manner, and after the porous medium combustion layer 112 is combusted, incompletely combusted flue gas continues to be combusted after passing through the area where the second combustion assembly 120 is located; the smoke around the second combustion assembly 120 is combusted again, and the air is heated to form local high pressure to entrain and mix the smoke, so that the aim of further and fully combusting is fulfilled.
In the embodiment of the present application, the housing 140 may have other shapes, and may be disposed according to the usage scenario of the burner 100, for example, it may be disposed in a square shape, and the positional relationship between the porous medium gas burner 112 and the second combustion assembly 120 is not limited to the aforementioned porous medium gas burner 112 being disposed around the second combustion assembly 120, for example, they may be disposed side by side, and the like.
Referring to fig. 5 and fig. 6 again, in the present embodiment, in order to reduce the volume of the burner 100, it is avoided that it occupies a large space; the combustion-supporting gas delivery pipe 160 and the fuel gas delivery pipe 150 are connected in a sleeve manner; in this embodiment, the combustion-supporting air delivery pipe 160 and the fuel gas delivery pipe 150 are both circular pipes, the combustion-supporting air delivery pipe 160 is sleeved outside the fuel gas delivery pipe 150 and is communicated with the second combustion assembly 120, and the gas delivered by the combustion-supporting air delivery pipe 160 is combusted after contacting the position of the second combustion assembly 120. The porous medium burner 112 is disposed around the combustion-supporting gas delivery pipe 160.
In other embodiments of the present application, the fuel gas delivery pipe 150 may be disposed to cover the combustion-supporting gas delivery pipe 160; alternatively, the combustion-supporting gas delivery pipe 160 and the combustion-supporting gas delivery pipe 150 are separately provided, and both are connected to the second combustion assembly 120.
For example, in the embodiment where the second combustion assembly 120 is used, the natural gas is transported through the gas transport pipe 150, and the oxidant gas transport pipe 160 transports air, the excess air factor of the gas entering the second combustion assembly 120 can be between 1.3 and 2.0, for example, 1.3, 1.5, 1.8, 1.9, 2.0, etc. by adjusting the flow rate of air and natural gas. The excess air coefficient is 1.3-2.0, so that the combustion temperature of the second combustion assembly 120 can be reduced, and the generation amount of nitrogen oxides can be reduced.
It should be noted that the air excess factor of the gas entering the second combustion assembly 120 is only an example, and the second combustion assembly 120 of the present application is not limited to be only suitable for the air excess factor.
The combustor 100 provided by the embodiment of the application has at least the following advantages:
after the mixed gas is combusted in the porous medium combustion layer 112, the mixed gas has the advantages of good combustion stability, good gas adaptability, uniform heat dissipation, low nitrogen oxide in smoke, less flame and the like; the flue gas after the combustion of the porous medium combustion layer 112 contains insufficiently combusted gas, the gas is guided by the outer shell 140 to flow downwards to the area where the second combustion assembly 120 is located, the raw material gas of the combustion area of the second combustion assembly 120 is fuel gas and combustion-supporting gas, the insufficiently combusted gas is combusted more sufficiently in the combustion area, so that the combustor 100 has the advantages of sufficient combustion and uniform heat dissipation; in the combustion zone of the second combustion assembly 120, the flue gas in the first combustion zone is reheated, and a local high pressure is formed due to the increased temperature of the air, so that the flue gas in the housing 140 is entrained and mixed in the combustion zone of the second combustion assembly 120, and further the combustion is completed, and simultaneously the released flame is reduced, so that the combustion has the characteristic of no flame or less flame.
For the embodiment in which the first combustion assembly 110 is provided with the perforated plate 113 having a cross section with a smaller hole area than the cross section of the mixture delivery pipe 130, the pressure is increased after the gas enters the perforated plate 113 from the mixture delivery pipe 130, so that the flow rate of the mixture entering each hole of the perforated plate 113 can be kept uniform; thereby making the heat emitted from each portion of the porous medium combustion layer 112 more uniform.
For embodiments where the pore size of the perforated plate 113 is less than or equal to 1.2mm, the perforated plate 113 has an anti-backfire effect.
The present application further provides a combustion apparatus comprising a gas supply assembly and the burner 100 described above connected to the gas supply assembly.
The gas supply assembly is used for supplying gas required by the burner 100, such as combustion-supporting gas, fuel gas and mixed gas; in addition, the gas supply assembly may also be configured with a detector, such as a pressure sensor, a flow meter, or the like, for detecting the pressure or flow of the gas.
The present application provides a combustion apparatus having all the advantages of the burner 100 described above.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A burner, characterized in that it comprises:
a housing;
a mixed gas conveying pipe; the mixed gas conveying pipe is used for conveying mixed gas of fuel gas and combustion-supporting gas;
a first combustion assembly; the first combustion assembly comprises a porous medium combustion layer, the porous medium combustion layer is positioned in the shell, and the porous medium combustion layer is communicated with the mixed gas conveying pipe;
a gas delivery pipe; the gas conveying pipe is used for conveying gas;
a combustion-supporting gas delivery pipe; the combustion-supporting gas conveying pipe is used for conveying combustion-supporting gas; and
a second combustion assembly; the second combustion assembly is located within the housing; the combustion-supporting gas conveying pipe and the fuel gas conveying pipe are both connected with the second combustion assembly; the second combustion assembly is positioned below the porous medium combustion layer, so that the smoke of the porous medium combustion layer can flow through the second combustion assembly.
2. The burner of claim 1,
first combustion assembly still includes the perforated plate, perforated plate one end with gas mixture conveyer pipe intercommunication, the other end with porous medium burning layer intercommunication.
3. Burner according to claim 2, wherein the perforated plate has cross sections in a direction perpendicular to the direction of transport of the mixture, the sum of the hole areas of said cross sections being smaller than the cross section area of the mixture transport duct.
4. The burner of claim 2, wherein the first combustion assembly further comprises a thermal shell, and wherein the perforated plate and the porous media combustion layer are both located within the thermal shell.
5. The burner of claim 2, wherein the perforated plate has a pore size of less than or equal to 1.2 mm.
6. The burner according to any one of claims 1 to 5,
the combustor also comprises a gas mixing chamber connected with the shell, and the gas mixing conveying pipe and the porous medium combustion layer are communicated with the gas mixing chamber; and an air distribution plate is arranged in the air mixing chamber.
7. The burner according to any one of claims 1 to 5, wherein the combustion-supporting gas delivery pipe is sleeved outside the gas delivery pipe;
the porous medium combustion layer surrounds the periphery of the combustion-supporting gas conveying pipe.
8. The burner according to any one of claims 1 to 5, wherein the combustion gas delivery pipe is sleeved outside the combustion-supporting gas delivery pipe;
the porous medium combustion layer surrounds the periphery of the fuel gas conveying pipe.
9. The burner according to any one of claims 1 to 5,
the combustor further includes a sleeve; the second combustion assembly comprises a gas nozzle and a swirl plate; the swirl plate is arranged at the outlet of the gas delivery pipe, and the gas delivery pipe and the combustion-supporting gas delivery pipe are both connected with a gas spray head; the gas nozzle is positioned in the sleeve.
10. A combustion unit, characterized in that the combustion unit comprises a gas supply assembly and a burner according to any one of claims 1-9 connected to the gas supply assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123215257.3U CN216408961U (en) | 2021-12-17 | 2021-12-17 | Combustor and combustion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123215257.3U CN216408961U (en) | 2021-12-17 | 2021-12-17 | Combustor and combustion device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216408961U true CN216408961U (en) | 2022-04-29 |
Family
ID=81286057
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123215257.3U Active CN216408961U (en) | 2021-12-17 | 2021-12-17 | Combustor and combustion device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216408961U (en) |
-
2021
- 2021-12-17 CN CN202123215257.3U patent/CN216408961U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3460441B2 (en) | Combustion device and thermal equipment equipped with the combustion device | |
| US6145501A (en) | Low emission combustion system | |
| US11226094B2 (en) | Burners and methods for use thereof | |
| KR20180011555A (en) | Portable gas stove | |
| CN106104158B (en) | burner and fuel cell system | |
| CN114087609A (en) | Staged porous medium burner | |
| WO2014062503A1 (en) | Improved aerodynamic radiant wall burner tip | |
| US6059566A (en) | Burner apparatus | |
| CN216408961U (en) | Combustor and combustion device | |
| CN210511672U (en) | Novel low natural gas high-speed burner structure that discharges | |
| CN114110585A (en) | Combustor and combustion device | |
| CN218626829U (en) | Combustor and combustion system | |
| CN106439810B (en) | Combustor and gas heater who has it | |
| WO2022096021A1 (en) | Burner and applications thereof | |
| JP7305049B2 (en) | Combustion and heat exchange assemblies and SOFC systems | |
| CN112944340A (en) | Combustor and combustion equipment | |
| CN112664933A (en) | Burner and combustion furnace | |
| CN214064912U (en) | Burner and combustion furnace | |
| CN217635620U (en) | Combustion device | |
| CN217519854U (en) | A kind of burner | |
| KR200363754Y1 (en) | Gas Burner using Radiant Heat | |
| CN216591708U (en) | Instant mixing type combustor | |
| CN219976427U (en) | Burner and gas stove | |
| CN215001678U (en) | Secondary air supply structure of biomass particle furnace | |
| CN214425992U (en) | Combustor and combustion equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |