CN212408655U - Uniform distributor, combustor assembly and combustor - Google Patents

Abstract

The application provides a uniform distributor, combustor subassembly and combustor relates to the combustion technology field. The uniform distributor is provided with a plurality of first runners and a plurality of second runners, and a plurality of first runners are provided with the gas import, and a plurality of second runners are provided with combustion-supporting gas import. The burner assembly includes a first housing and an applicator. The first housing defines a combustion chamber. A plurality of first runners and a plurality of second runners of the uniform distributor are communicated with the combustion chamber. The uniform distributor can independently introduce the fuel gas and the preheated combustion-supporting gas into the combustion chamber respectively and then mix the fuel gas and the preheated combustion-supporting gas, so that the preheated combustion-supporting gas and the fuel gas are prevented from being mixed in advance to explode. Or the uniform distributor can respectively introduce the fuel gas and the preheated combustion-supporting gas into the uniform distributor, then carry out multi-strand small-amount mixing in the uniform distributor, and then enter the combustion chamber for further uniform mixing. The preheated combustion-supporting gas and fuel gas are combusted in the combustion chamber, and the preheating type porous medium combustion mode has the advantages of high heat efficiency, high safety, less pollutant emission and high utilization rate.

Description

Uniform distributor, combustor assembly and combustor

Technical Field

The application relates to the technical field of combustion, in particular to an equipartition ware, combustor subassembly and combustor.

Background

Traditional gas combustion ware is through free flame burning and provides convection heating and radiant heating of high temperature flue gas, and this kind of gas combustion mode makes near the temperature gradient of flame face big, and temperature distribution is extremely inhomogeneous, and the burning is unstable, leads to local high temperature and burning insufficient, and local high temperature causes a large amount of heating power nitrogen oxide's formation again, and the burning insufficient causes the formation of a large amount of carbon monoxide, and then leads to pollutant discharge not up to standard.

Aiming at the problems of free flame combustion, domestic and foreign scholars successively put forward the concept of porous medium combustion, the stability of the porous medium combustion flame is enhanced, the combustion rate is increased, the temperature distribution of a combustion area is uniform, the emission of combustion pollutants is reduced, and a series of porous medium combustion technologies and devices are formed.

However, the thermal efficiency and utilization of the existing porous medium burner are not high.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the application is to provide a uniform distributor, a burner assembly and a burner, which can improve the technical problem that the existing porous medium burner can not adopt preheated combustion-supporting gas to improve the heat efficiency and the utilization rate.

In a first aspect, an embodiment of the present application provides an equipartition device, which has a plurality of first runners and a plurality of second runners, and a plurality of first runners are provided with the gas import, and a plurality of second runners are provided with combustion-supporting gas import, and a plurality of first runners, a plurality of second runners all are used for communicating with the combustion chamber. In the implementation process, the uniform distributor can independently introduce the fuel gas and the preheated combustion-supporting gas into the combustion chamber respectively and then mix the fuel gas and the preheated combustion-supporting gas, so that the preheated combustion-supporting gas and the fuel gas are prevented from being mixed in advance and exploding. Or the uniform distributor can respectively introduce the fuel gas and the preheated combustion-supporting gas into the uniform distributor, then carry out multi-strand small-amount mixing in the uniform distributor, and then enter the combustion chamber for further uniform mixing.

Meanwhile, the plurality of first flow channels and the plurality of second flow channels can enable the fuel gas and the combustion-supporting gas to be uniformly distributed in the uniform distributor, the fuel gas and the combustion-supporting gas flow to the combustion chamber in a multi-strand form and then are fully contacted, and the fuel gas and the combustion-supporting gas are uniformly mixed and finally undergo combustion reaction in the combustion chamber.

In a possible embodiment, the plurality of second flow passages are in communication with the plurality of first flow passages, each of which is provided with an outlet for communication with the combustion chamber.

In the implementation process, the fuel gas enters the first flow channel from the fuel gas inlet, the combustion-supporting gas enters the second flow channel from the combustion-supporting gas inlet and then enters the first flow channel to be primarily mixed with the fuel gas, and finally, the primarily mixed fuel gas and the combustion-supporting gas enter the combustion chamber to perform combustion reaction.

In one possible embodiment, the plurality of first flow passages and the plurality of second flow passages are provided with outlets for communicating with the combustion chamber, respectively.

In the implementation process, the fuel gas enters the first flow channel from the fuel gas inlet and flows into the combustion chamber from the first flow channel, the combustion-supporting gas enters the second flow channel from the combustion-supporting gas inlet and flows into the combustion chamber from the second flow channel, and the combustion-supporting gas and the fuel gas are uniformly mixed after entering the combustion chamber and are subjected to combustion reaction in the combustion chamber.

In a possible embodiment, the first flow channels and the second flow channels are distributed alternately.

In the implementation process, the first flow passage and the second flow passage are alternately distributed, so that the fuel gas and the combustion-supporting gas can be quickly and uniformly mixed after entering the combustion chamber.

In one possible embodiment, the plurality of first flow passages have a smaller inner diameter in the direction of the combustion gas flow passage.

In the implementation process, after the inner diameter of the first flow channel along the flowing direction of the fuel gas is reduced, the flow resistance of the fuel gas is increased, so that the fuel gas enters the combustion chamber in a more uniform partial state, and a wider stable combustion state is realized.

In one possible embodiment, a plurality of first flow channels are disposed around a plurality of second flow channels.

In the implementation process, the structure of the uniform distributor is similar to that of the tube bundle heat exchanger, a plurality of second flow channels of the uniform distributor are equivalent to tube passes of the tube bundle heat exchanger, a plurality of first flow channels arranged around the second flow channels are equivalent to shell passes of the tube bundle heat exchanger, and the first flow channels and the second flow channels are mutually independent and can carry out heat exchange.

In a second aspect, embodiments of the present application provide a burner assembly, comprising: first casing and foretell equipartition ware, combustion chamber is injectd to first casing, and a plurality of first runners, a plurality of second runners all communicate with the combustion chamber.

In the implementation process, the uniform distributor respectively and independently introduces the fuel gas and the preheated combustion-supporting gas into the combustion chamber and then mixes the fuel gas and the preheated combustion-supporting gas, or the uniform distributor can introduce the fuel gas and the preheated combustion-supporting gas into the uniform distributor respectively and then carries out multi-strand small mixing in the uniform distributor and then enters the combustion chamber and then further mixes the mixture uniformly, and the preheated combustion-supporting gas and the fuel gas are combusted in the combustion chamber.

In one possible embodiment, a porous material is provided in the combustion chamber.

In the implementation process, the combustion-supporting gas and the fuel gas enter the combustion chamber and are uniformly mixed and then are combusted in the pores of the porous material in the combustion chamber.

In a third aspect, embodiments of the present application provide a burner that includes the burner assembly described above and a second housing.

The second shell is limited to form an air distribution chamber, the second shell is connected to the uniform distributor so that the air distribution chamber is communicated with the first flow channels or the second flow channels, and the fuel gas inlet or the combustion-supporting gas inlet is arranged outside the air distribution chamber.

In the implementation process, the gas distribution chamber is used for guiding the fuel gas or the combustion-supporting gas into the uniform distributor, and the rest gas directly enters the uniform distributor through an inlet outside the gas distribution chamber, so that the fuel gas and the combustion-supporting gas are respectively guided into the uniform distributor.

In one possible embodiment, a spoiler is provided in the air distribution chamber for flow guidance.

In the implementation process, the spoiler can improve the uniformity of the gas or the combustion-supporting gas in the gas distribution chamber in the circumferential distribution direction.

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 is a cross-sectional view of an applicator of an embodiment of the present application;

FIG. 2 is a front view of an applicator of an embodiment of the present application;

FIG. 3 is a cross-sectional view of a burner assembly according to an embodiment of the present application;

FIG. 4 is a cross-sectional view of a burner according to an embodiment of the present application;

FIG. 5 is a partial cross-sectional view of a combustor according to an embodiment of the present application;

FIG. 6 is a sectional view of a burner according to embodiment 2 of the present application;

FIG. 7 is a sectional view of a burner according to embodiment 3 of the present application;

FIG. 8 is a partial cross-sectional view of a burner according to embodiment 3 of the present application;

FIG. 9 is a sectional view of a burner according to embodiment 4 of the present application;

fig. 10 is a partial sectional view of a burner of embodiment 4 of the present application;

FIG. 11 is a sectional view of a burner according to embodiment 5 of the present application;

fig. 12 is a partial sectional view of a burner according to embodiment 5 of the present application.

Icon: 10-a burner assembly; 20-a burner; 100-a first housing; 101-a combustion chamber; 102-a gas inlet; 103-a flue gas outlet; 104-a porous material; 105-heat preservation and insulation layer; 200-a uniform distributor; 201-gas outlet; 202-gas inlet; 203-combustion-supporting gas inlet; 205-a first flow channel; 206-a second flow channel; 207-stacking ceramic balls; 208-a honeycomb panel; 209-gas outlet; 210-a combustion-supporting gas outlet; 211-alumina honeycomb ceramic plate; 212-silicon carbide ceramic foam; 213-gas inlet; 214-honeycomb ceramic cylinder; 215-a foamed ceramic cylinder; 300-a second housing; 301-air distribution chamber; 310-a spoiler; 400-air intake device.

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 present application, it should be noted that the terms "upper", "lower", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings or orientations or positional relationships conventionally found in use of products of the application, and are used only for convenience in describing the present application and for simplification of description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed 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 present application, it is also to be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; either mechanically or electrically. 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.

Referring to fig. 1 and 2, the present application provides a uniform distributor 200, which has a plurality of first flow channels 205 and a plurality of second flow channels 206, wherein the plurality of first flow channels 205 are provided with a fuel gas inlet 202, the plurality of second flow channels 206 are provided with an oxidant gas inlet 203, and the plurality of first flow channels 205 and the plurality of second flow channels 206 are both used for communicating with a combustion chamber 101.

The uniform distributor 200 can separately introduce the fuel gas and the preheated combustion-supporting gas into the combustion chamber 101 and then mix the fuel gas and the preheated combustion-supporting gas, so that the preheated combustion-supporting gas and the fuel gas are prevented from being mixed in advance and exploding. Or the uniform distributor 200 can introduce the fuel gas and the preheated combustion-supporting gas into the uniform distributor 200 respectively, and the fuel gas and the preheated combustion-supporting gas are mixed in the uniform distributor 200 in a small quantity and then enter the combustion chamber 101 for further uniform mixing. The preheated combustion-supporting gas and fuel gas are combusted in the pores of the porous material 104 of the combustion chamber 101, so that the preheated porous medium combustion is realized.

Meanwhile, the plurality of first flow channels 205 and the plurality of second flow channels 206 enable the fuel gas and the combustion-supporting gas to be uniformly distributed in the uniform distributor 200, the fuel gas and the combustion-supporting gas flow to the combustion chamber 101 in a multi-strand form and then fully contact with each other, and the fuel gas and the combustion-supporting gas are uniformly mixed and finally undergo a combustion reaction in the porous material 104.

Referring to FIG. 3, the present application provides a burner assembly 10 that includes a first housing 100 and an applicator 200.

The first housing 100 defines a combustion chamber 101 in which combustion occurs, and the combustion chamber 101 has a gas inlet 102 for introducing combustion gas and oxidant gas and a flue gas outlet 103 for discharging combusted gas in a direction of gas flow.

The first housing 100 is made of a heat-resistant alloy steel material including, but not limited to, 1Cr18Ni9Ti (321), 1Cr23Ni13(309), or 0Cr25Ni20 (310S).

The combustion chamber 101 is provided with a porous material 104, after the gas and the combustion-supporting gas enter the combustion chamber 101 from the gas inlet 102, the gas and the combustion-supporting gas are uniformly mixed in the porous material 104 and undergo a combustion reaction to form infrared radiation heating, and finally the combusted gas is discharged from the smoke outlet 103.

The porous material 104 arranged in the combustion chamber 101 in the direction from the gas inlet 102 to the flue gas outlet 103 comprises at least two. Wherein the pore size of the porous material 104 arranged close to the gas inlet 102 is smaller and the pore size of the porous material 104 arranged close to the flue gas outlet 103 is larger. The mixed gas of the fuel gas and the combustion-supporting gas firstly enters the porous material 104 with small pore diameter to be uniformly dispersed, and then enters the porous material 104 with large particle diameter to carry out combustion reaction, and flame is not easy to enter the porous material 104 with small particle diameter from the porous material 104 with large particle diameter, so that the back fire and deflagration of the burner assembly 10 are prevented, and the safety is high.

Optionally, two porous materials 104 are arranged in the combustion chamber 101 in the direction from the gas inlet 102 to the flue gas outlet 103. The pore diameter of the porous material 104 arranged close to the gas inlet 102 is 0.5-2 mm, and the volume of the porous material 104 accounts for 10-70% of the total volume of the porous material 104; the pore diameter of the porous material 104 arranged close to the flue gas outlet 103 is 2-6 mm, and the volume of the porous material 104 accounts for 10-70% of the total volume of the porous material 104.

The porous material 104 includes one or more of packed ceramic balls, foam structure materials, honeycomb structure materials, array structure materials, and random fiber structure materials.

In one embodiment of the present application, both the packed ceramic balls 207 and the honeycomb material may be disposed in the combustion chamber 101. In other embodiments of the present application, only one of the stacked ceramic balls 207, the foam structure material, the honeycomb structure material, the array structure material, or the random fiber structure material, or two of the stacked ceramic balls 207 and the honeycomb structure material, or two of the honeycomb structure material and the array structure material, or three of the stacked ceramic balls 207, the foam structure material, and the honeycomb structure material may be disposed in the combustion chamber 101.

It should be noted that, when the porous material 104 disposed near the gas inlet 102 is selected as the stacked ceramic balls 207, the diameter of the stacked ceramic balls 207 is 2-8 mm.

The porous material 104 includes alumina ceramic, zirconia ceramic, silicon carbide ceramic, iron-chromium-aluminum alloy, chromium-nickel alloy, tungsten alloy, or other high temperature resistant materials.

The inner wall portion of the first casing 100 is provided with a heat insulating layer 105.

The thermal insulating layer 105 is made of a thermal insulating material, which can reduce heat loss of the burner assembly 10 and improve thermal efficiency of the burner assembly 10.

The heat insulating material includes, but is not limited to, alumina fiber cotton, glass wool or rock wool.

The uniform distributor 200 has a gas outlet 201, the uniform distributor 200 is connected to the first casing 100 such that the gas outlet 201 is disposed at the gas inlet 102 of the combustion chamber 101, and the uniform distributor 200 is used for guiding the fuel gas and the combustion-supporting gas to enter the combustion chamber 101 for combustion reaction.

Referring to fig. 4, the present application further provides a burner 20 including the burner assembly 10 and a second housing 300.

The second housing 300 defines a gas distribution chamber 301, the second housing 300 is connected to the distributor 200 such that the gas distribution chamber 301 is communicated with the plurality of first flow passages 205 or the plurality of second flow passages 206, and the gas inlet 202 or the oxidant gas inlet 203 is disposed outside the gas distribution chamber 301.

Wherein, the air distribution chamber 301 is provided with a spoiler 310 for drainage, which is used for improving the uniformity of the gas or combustion-supporting gas in the air distribution chamber 301 along the inner circumference of the air distribution chamber 301.

The shape of the burner 20 is not limited in the present application, and may be a flat plate type, a cylindrical type, or a spherical type.

The combustor 20 of the present application is described in further detail below with reference to examples.

Example 1

Referring to fig. 4 and 5, the present embodiment provides a combustor 20, which includes an air inlet device 400, a second casing 300, a distributor 200, and a first casing 100.

The second housing 300 defines an air distribution chamber 301, and the air inlet device 400 is connected to one end of the second housing 300 such that the combustion-supporting gas or fuel gas is introduced into the air distribution chamber 301 from the air inlet device 400.

A spoiler 310 for drainage is provided in the air distribution chamber 301.

In the embodiment of the present application, the gas distribution chamber 301 is gradually expanded along the flowing direction of the combustion-supporting gas or the fuel gas, the spoiler 310 is disposed in the middle of the gas distribution chamber 301 along the direction perpendicular to the flowing direction of the combustion-supporting gas or the fuel gas, when the gas enters the gas distribution chamber 301, the gas is blocked by the spoiler 310 in the middle of the gas distribution chamber 301, and the gas is respectively diffused to the gap between the spoiler 310 and the second shell 300, so that the combustion-supporting gas or the fuel gas enters the gas distribution chamber 301 and then flows into the whole gas distribution chamber 301 along the side wall of the gas distribution chamber 301, so that the combustion-supporting gas or the fuel gas is uniformly distributed in the.

The first casing 100 defines a combustion chamber 101, and the other end of the second casing 300 is connected to one end of the applicator 200, and the other end of the applicator 200 is connected to the first casing 100. The combustion-supporting gas or fuel gas firstly enters the uniform distributor 200 from the gas distribution chamber 301, and then enters the combustion chamber 101 from the uniform distributor 200 to generate combustion reaction.

In the embodiment of the present application, the gas distribution chamber 301 is used for guiding the combustion-supporting gas to enter the uniform distributor 200 through the combustion-supporting gas inlet 203 of the uniform distributor 200, and the combustion gas enters the uniform distributor 200 from the combustion gas inlet 202 outside the gas distribution chamber 301, wherein the combustion gas inlet 202 is arranged on two sides of the uniform distributor 200.

The uniform distributor 200 has a plurality of first flow channels 205 and a plurality of second flow channels 206, the first flow channels 205 and the second flow channels 206 are respectively provided with a fuel gas inlet 202 and an oxidant gas inlet 203, and the plurality of second flow channels 206 are communicated with the plurality of first flow channels 205 and communicated with the combustion chamber 101 through the plurality of first flow channels 205.

The gas enters the first flow channel 205 from the gas inlet 202, the combustion-supporting gas enters the second flow channel 206 from the combustion-supporting gas inlet 203, then enters the first flow channel 205 to be primarily mixed with the gas in the first flow channel 205, and finally the primarily mixed gas and the combustion-supporting gas enter the porous material 104 of the combustion chamber 101 to perform combustion reaction. In fig. 4 and 5, solid arrows indicate the flow of combustion-supporting gas, and dashed arrows indicate the flow of combustion-supporting gas.

The side wall of the first casing 100 is provided with a thermal insulation layer 105 made of thermal insulation material, and the porous material 104 is arranged in the thermal insulation layer 105.

The combustion chamber 101 is sequentially provided with a stacking ceramic ball 207 with the diameter of 5mm and a honeycomb plate 208 with the pore diameter of 4-5 mm along the gas flowing direction, wherein the pore diameter of the stacking ceramic ball 207 is smaller than the quenching size of flame, so that the flame is prevented from backfiring and deflagrating.

The gas and the combustion-supporting gas primarily mixed by the uniform distributor 200 are further uniformly mixed by the stacking ceramic balls 207, and then enter the honeycomb plate 208 for combustion reaction.

In the present embodiment, the ends of the honeycomb panel 208 material and the ends of the thermal insulation layer 105 are aligned, i.e., the width of the cellular material 104 is equal to the thermal insulation layer 105.

An ignition electrode for ignition and a flame detection electrode for detecting flame are arranged outside the honeycomb plate 208. After the combustion gas and the combustion-supporting gas are guided to the combustion chamber 101 by the uniform distributor 200, the mixed gas partially overflows from the material of the honeycomb plate 208, at this time, ignition is performed by using an ignition electrode, the flame extends to the honeycomb plate 208, and the combustion reaction occurs in the honeycomb plate 208.

Example 2

Referring to fig. 6, the present embodiment provides a burner 20, which uses a porous material 104 with different structures in a combustion chamber 101 based on embodiment 1.

An alumina honeycomb ceramic plate 211 with the aperture of 1.5-2 mm and a silicon carbide foam ceramic 212 with the aperture of 4-5 mm are sequentially arranged in the combustion chamber 101 along the gas flowing direction, wherein the porosity of the silicon carbide foam ceramic 212 is 60%.

The gas and the combustion-supporting gas primarily mixed by the uniform distributor 200 are further uniformly mixed by the alumina honeycomb ceramic plate 211 and then enter the silicon carbide foam ceramic 212 for combustion reaction.

In the embodiment of the present application, the end of the thermal insulation layer 105 far exceeds the end of the silicon carbide ceramic foam 212, that is, the width of the thermal insulation layer 105 far exceeds the width of the porous material 104, the whole porous material 104 is disposed in the cavity formed by the thermal insulation layer 105, and part of the cavity outside is left unoccupied by the porous material 104 for thermal insulation. Above-mentioned structure can further reduce the thermal loss of burning, improves combustor 20's stability and combustion efficiency, reaches the effect of "super enthalpy" burning, is about to burn the heat that produces etc. and is used for heating the premixed gas of reaction zone upper reaches piece to make combustion reaction strengthen greatly, the temperature of burning flame surpasss adiabatic combustion temperature.

An ignition electrode for ignition and a flame detection electrode for detecting flame are arranged outside the silicon carbide foam ceramic 212 and on the inner wall of the heat insulation layer 105.

Example 3

Referring to fig. 7 and 8, the present embodiment provides a burner 20, which is based on embodiment 1 and has a different structure of a uniform distributor 200.

The uniform distributor 200 is provided with a plurality of mutually independent first flow passages 205 and a plurality of second flow passages 206 in the uniform distributor 200, the plurality of first flow passages 205 and the plurality of second flow passages 206 are respectively and independently communicated with the combustion chamber 101, namely, each first flow passage 205 is provided with a fuel gas inlet 202 and a fuel gas outlet 209, and each second flow passage 206 is provided with an oxidant gas inlet 203 and an oxidant gas outlet 210. And the plurality of first flow channels 205 and the plurality of second flow channels 206 are alternately distributed, so that the fuel gas and the combustion-supporting gas can be rapidly and uniformly mixed after entering the combustion chamber 101.

After the gas enters the first flow channel 205 from the lateral gas inlet 202 outside the gas distribution chamber 301, the inner diameter of the first flow channel 205 in the gas flowing direction becomes smaller, the flow resistance of the gas is increased, and the gas enters the combustion chamber 101 in a more uniform partial state, so that a wider range of stable combustion state is realized, wherein solid arrows in fig. 7 and 8 are combustion-supporting gas flow directions, and dotted arrows are gas flow directions.

Example 4

Referring to fig. 9 and 10, the present embodiment provides a burner 20, which is based on embodiment 2 and has a different structure of a distributor 200.

The structure of the uniform distributor 200 is similar to that of a tube bundle heat exchanger, the middle of the uniform distributor 200 is provided with a plurality of second flow channels 206 for transporting combustion-supporting gas, each second flow channel 206 is provided with a combustion-supporting gas inlet 203 and a combustion-supporting gas outlet 210, which is equivalent to the tube pass of the tube bundle heat exchanger, a plurality of first flow channels 205 for transporting fuel gas are arranged around the second flow channels 206, each first flow channel 205 is provided with a fuel gas inlet 202 and a fuel gas outlet 209, which is equivalent to the shell pass of the tube bundle heat exchanger, and the plurality of first flow channels 205 and the plurality of second flow channels 206 are respectively and independently communicated with the combustion chamber 101. Wherein each first flow channel 205 and each second flow channel 206 are independent of each other and can exchange heat.

After the gas enters the first flow channel 205 from the lateral gas inlet 202 outside the gas distribution chamber 301, the combustion-supporting gas enters the second flow channel 206 from the combustion-supporting gas inlet 203 through the gas distribution chamber 301, the heat exchange between the preheated combustion-supporting gas in the second flow channel 206 and the gas in the first flow channel 205 occurs, the waste heat of the combustion gas is fully recycled, the heat loss is reduced by adopting a mode of increasing the heat exchange area between the preheated air and the gas, so that the more sufficient combustion effect is realized, the heat efficiency of the combustor 20 is improved, the solid line arrow in fig. 9 and fig. 10 is the flow direction of the combustion-supporting gas, and the dotted line arrow is the flow direction of the gas.

Example 5

Referring to fig. 11 and 12, in an embodiment of the present invention, a burner 20 is provided, and the burner 20 is a gun-type structure and includes an air inlet device 400, a second housing 300, an equilizer 200 and a first housing 100.

The second housing 300 is a cylindrical structure extending from a first end to a second end, the second housing 300 defines an air distribution chamber 301, a side wall of the first end of the second housing 300 is provided with a gas inlet 213, and gas enters the air distribution chamber 301 from the gas inlet 213.

A spoiler 310 for drainage is provided in the air distribution chamber 301.

In the embodiment of the present application, a plurality of spoilers 310 are sequentially disposed on the inner wall of the second casing 300 at intervals, so as to improve the uniformity of the circumferential distribution of the fuel gas in the gas distribution chamber 301.

The applicator 200 is disposed about a second end of the second housing 300. The uniform distributor 200 has a plurality of first flow channels 205 and a plurality of second flow channels 206 therein, the plurality of first flow channels 205 and the plurality of second flow channels 206 are respectively and individually communicated with the combustion chamber 101, that is, each first flow channel 205 is provided with a gas inlet 202 and a gas outlet 209, and each second flow channel 206 is provided with an oxidant gas inlet 203 and an oxidant gas outlet 210. And the first flow channel 205 and the second flow channel 206 are alternately distributed, so that the fuel gas and the combustion-supporting gas can be quickly and uniformly mixed after entering the combustion chamber 101.

The gas distribution chamber 301 is communicated with the gas inlet 202 of the distributor 200 through the second end of the second housing 300, so that the gas in the gas distribution chamber 301 enters the plurality of first flow channels 205 of the distributor 200.

The air inlet device 400 is sleeved at the first end of the second housing 300, and the air inlet device 400 is communicated with the combustion-supporting air inlet 203 of the uniform distributor 200, so that the combustion-supporting air enters the second flow passage 206 of the uniform distributor 200.

The first casing 100 is disposed around the applicator 200, and the first casing 100 has a plurality of through-holes. The honeycomb ceramic cylinder 214 with a pore diameter of 2mm is supported by the first casing 100 and sleeved outside the first casing 100; a foamed ceramic cylinder 215 with a pore diameter of 5mm is sleeved outside the honeycomb ceramic cylinder 214. Wherein the honeycomb ceramic cylinders 214 and the ceramic foam cylinders 215 form the combustion chamber 101.

Have the gap between the outer wall of first casing 100 and equipartition ware 200, the gas enters into the gap through gas export 209, and combustion-supporting gas enters into the gap through combustion-supporting gas export 210, and gas and combustion-supporting gas can carry out preliminary mixing in the gap after entering into combustion chamber 101 through a plurality of through-holes of first casing 100 and carry out combustion reaction.

The fuel gas and the combustion-supporting gas are respectively transmitted from the inside to the outside along the radial direction of the burner 20, and respectively enter the gap through the diversion of the uniform distributor 200 to be primarily mixed, then enter the honeycomb ceramic cylinder 214 to be uniformly mixed, and finally carry out combustion reaction in the foam ceramic cylinder 215. In fig. 11 and 12, solid arrows indicate the flow of combustion-supporting gas, and dashed arrows indicate the flow of combustion-supporting gas.

The end of the uniform distributor 200 is provided with a heat insulation layer 105 made of heat insulation materials, the heat insulation layer 105 extends to the end of the honeycomb ceramic cylinder 214 and the end of the foam ceramic cylinder 215, and the heat insulation layer 105 plays a role in heat insulation and heat insulation, and simultaneously supports and fixes the honeycomb ceramic cylinder 214 and the foam ceramic cylinder 215 to prevent the honeycomb ceramic cylinder 214 and the foam ceramic cylinder 215 from moving in a dislocation way.

An ignition electrode for ignition and a flame detection electrode for detecting flame are arranged outside the foamed ceramic cylinder 215. After the combustion gas and the combustion-supporting gas are guided to the combustion chamber 101 by the uniform distributor 200, the mixed gas partially overflows from the foamed ceramic cylinder 215, at this time, an ignition electrode is used for ignition, the flame extends to the foamed ceramic cylinder 215, and a combustion reaction occurs in the foamed ceramic cylinder 215.

To sum up, this application embodiment provides an equipartition ware, combustor subassembly and combustor, it makes fire-retardant gas preheat to more than 400 ℃ through the waste heat of abundant retrieval and utilization burning flue gas to make preheated fire-retardant gas and gas enter into combustion chamber 101 respectively through equipartition ware 200, or introduce respectively gas and the combustion-supporting gas after preheating into equipartition ware 200 after the branch mixes in equipartition ware 200 and enter into combustion chamber 101, prevent that the combustion-supporting gas after preheating mixes in advance with the gas and explodes. Meanwhile, the preheated combustion-supporting gas and fuel gas are combusted in the pores of the porous material 104 of the combustion chamber 101, so that the preheated porous medium is combusted, and the combustion mode has the characteristics of high heat efficiency, high utilization rate, high safety and less pollutant emission.

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. The utility model provides a uniform distributor which characterized in that, the uniform distributor has a plurality of first runners and a plurality of second runner, a plurality of first runners are provided with the gas import, a plurality of second runners are provided with combustion-supporting gas import, a plurality of first runners, a plurality of second runners all are used for with the combustion chamber intercommunication.

2. A homogenizer according to claim 1, wherein the plurality of second flow channels communicate with the plurality of first flow channels, the plurality of first flow channels each being provided with an outlet for communication with a combustion chamber.

3. A homogenizer according to claim 1, wherein the plurality of first flow passages and the plurality of second flow passages are provided with outlets for communication with a combustion chamber, respectively.

4. A homogenizer according to claim 3, wherein the first flow channels and the second flow channels are alternately distributed.

5. A homogenizer according to claim 3, wherein the plurality of first flow channels have a decreasing inner diameter in the direction of the gas flow channel.

6. A homogenizer according to claim 3, wherein the plurality of first flow passages are disposed about the plurality of second flow passages.

7. A burner assembly, comprising: the homogenizer of any one of claims 1 to 6 and a first housing defining a combustion chamber, said first plurality of flow passages and said second plurality of flow passages each communicating with said combustion chamber.

8. The burner assembly of claim 7 wherein a porous material is disposed in the combustion chamber.

9. A burner, characterized in that it comprises:

the burner assembly of claim 7 or 8;

the second shell is connected with the uniform distributor so as to enable the gas distribution chamber to be communicated with the first flow channels or the second flow channels, and the fuel gas inlet or the combustion-supporting gas inlet is arranged outside the gas distribution chamber.

10. The burner of claim 9, wherein a spoiler is disposed in the plenum for channeling flow.

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