Modular combustion device, combustion furnace and arrangement method of immersed burner

Abstract

The present application relates to a modular combustion device, a combustion furnace, and an arrangement method for an immersed burner, which is used in a combustion furnace, wherein the combustion device includes at least two burner unit modules; the burner unit module includes at least one combustion flame outlet, and the combustion flame outlet is provided with a fuel channel and a combustion medium channel. The present invention uses modular burner unit modules to construct the combustion device of the combustion furnace, and can configure different numbers of burner unit modules according to different power requirements. Therefore, the same combustion furnace can be configured with different numbers of burner unit modules to achieve rapid power adjustment, thereby making it possible to adapt the same combustion furnace to different application scenarios. By modularly designing the combustion device, the types of burner models can be reduced and the overall design of the combustion device can be simplified, thereby facilitating the configuration and adjustment of the combustion device according to different process requirements in actual use scenarios.

Description

Technical Field

[0001] The present application relates to the technical field of combustion devices and combustion furnaces, and in particular to an arrangement method of a modular combustion device, a combustion furnace and an immersed burner. Background Art

[0002] Combustion furnaces are commonly used in industrial melting equipment. With technological advancements, a growing number of new combustion methods are emerging. Submerged combustion is one of these methods. Because the burner is installed below the liquid surface, it allows for sufficient heat exchange with the heated material, resulting in higher thermal efficiency. However, existing technologies use furnaces with varying power specifications to meet varying combustion power requirements, resulting in high investment costs and limited equipment versatility. Summary of the Invention

[0003] In order to solve the above technical problems, the purpose of this application is to provide a modular combustion device, a combustion furnace and an arrangement method of an immersed burner to solve the problems existing in current combustion furnaces.

[0004] In order to achieve the above-mentioned purpose of the invention, the present invention provides a modular combustion device for use in a combustion furnace, wherein the combustion device includes at least two burner unit modules; the burner unit module includes at least one combustion flame nozzle, and the combustion flame nozzle is provided with a fuel channel and a combustion medium channel.

[0005] The present invention uses modular burner modules to construct the combustion device of the combustion furnace. Different numbers of burner modules can be configured according to different power requirements. Therefore, the same combustion furnace can be configured with different numbers of burner modules to achieve rapid power adjustment, thereby making it possible to adapt the same combustion furnace to different application scenarios. By modularizing the combustion device, the variety of burner models is reduced and the overall design of the combustion device is simplified, making it easier to configure and adjust the combustion device according to different process requirements in actual use scenarios.

[0006] Furthermore, the burner unit module is provided with a cooling medium circulation channel.

[0007] Furthermore, the burner unit module is provided with an expansion connection portion, and a plurality of burner unit modules are assembled into a combustion unit module through the expansion connection portion, and the modular combustion device includes at least one combustion unit module.

[0008] Furthermore, the modular combustion device also includes a replacement module, and the replacement module has the same expansion connection part as the burner unit module.

[0009] Furthermore, the expansion connection portion is provided with a sealing structure, and is also provided with a fuel channel connector and a combustion-supporting medium channel connector;

[0010] Alternatively, the expansion connection portion is provided with a sealing structure and a cooling medium channel connector;

[0011] Alternatively, the extended connection portion is provided with a sealing structure, and is further provided with a fuel channel connector, a combustion-supporting medium channel connector, and a cooling medium circulation channel connector.

[0012] The present invention also provides a combustion furnace comprising any one of the above-mentioned modular combustion devices.

[0013] Furthermore, the distance between the combustion nozzle and the inner wall of the combustion furnace is not less than 50 mm.

[0014] Furthermore, the combustion device is arranged below the liquid surface of the liquid formed by the melting of the processed material.

[0015] Furthermore, a plurality of burner unit modules are arranged in the combustion furnace, and grooves formed between the burner unit modules constitute guide flow channels for liquid formed by melting the processed material.

[0016] Furthermore, the number of burner unit modules installed per square meter of the installation area of the inner wall of the combustion furnace is 1 to 20, and each burner unit module is provided with 5 to 10 combustion flame ports.

[0017] The present invention also provides a method for arranging an immersed burner, wherein a combustion device with a combustion jet is arranged below the liquid surface of a liquid formed by melting the processed material.

[0018] Furthermore, the combustion device is any of the modular combustion devices described above, and a plurality of burner unit modules are arranged in the combustion furnace, and the grooves formed between the burner unit modules constitute guide flow channels for the liquid formed by the melt of the processed material.

[0019] Furthermore, the distance between the combustion nozzle and the inner wall of the combustion furnace is not less than 50 mm. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] To more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0021] Figure 1 This is a structural diagram of the combustion device and combustion furnace of the present application;

[0022] Figure 2 It is a schematic diagram of the burner unit module of the present application.

[0023] The reference numerals in the accompanying drawings are as follows:

[0024] Combustion unit module 11, burner unit module 111, combustion flame nozzle 1115, replacement module 112, combustion furnace body 3, furnace wall 31, feeding port 32, discharge port 33, cooling medium outlet 1116, fuel pipeline inlet 21, combustion medium pipeline inlet 23, cooling medium pipeline inlet 25, as well as fuel pipeline outlet 22, combustion medium pipeline outlet 24, cooling medium pipeline outlet 26. DETAILED DESCRIPTION

[0025] To make the purpose, technical solutions, and advantages of this application more clear, the technical solutions of this application will be clearly and completely described below in conjunction with the specific embodiments of this application and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0026] The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and should not be construed as limiting the present application.

[0027] like Figure 1 and Figure 2 As shown, the present application provides a modular combustion device for use in a combustion furnace, wherein the combustion device includes at least two burner unit modules 111; the burner unit module 111 includes at least one combustion flame vent 1115, and the combustion flame vent 1115 is provided with a fuel channel and a combustion medium channel. According to the power requirements and temperature distribution requirements, the burner unit modules 111 can be flexibly arranged, and the burner arrangement area in the combustion furnace can be set according to a matrix to provide a reserved installation interface adapted to the burner unit module. In this way, when the arrangement needs to be changed, no additional modification is required, and the burner unit module only needs to be assembled at the required position. The interface where the burner unit module does not need to be installed can be blocked with a replacement module 112. When necessary, the replacement module can be replaced with a burner unit module to simply and quickly complete the required power and temperature zone changes. Since the combustion device and combustion furnace designed in the present invention can be applied to the melting of solid materials, the burner is arranged below the plane of the molten liquid. Therefore, the burner needs to provide fuel and flame retardant medium at the same time, such as natural gas and air or oxygen, which are provided simultaneously through pipelines. After the mixture is ignited, sustainable combustion is achieved in the liquid.

[0028] The present invention uses modular burner modules to construct the combustion device of the combustion furnace. Different numbers of burner modules can be configured according to different power requirements. Therefore, the same combustion furnace can be configured with different numbers of burner modules to achieve rapid power adjustment, thereby making it possible to adapt the same combustion furnace to different application scenarios. By modularizing the combustion device, the variety of burner models is reduced and the overall design of the combustion device is simplified, making it easier to configure and adjust the combustion device according to different process requirements in actual use scenarios.

[0029] In some embodiments, the burner unit module 111 is provided with a cooling medium circulation channel. To protect the burner unit module from damage due to high temperatures, a cooling medium flow channel is provided or directly processed in the burner unit module. This flow channel is connected to an external cooling medium supply pipeline, continuously providing a cooling medium (e.g., cooling water or cooling oil) to cool the burner unit module, maintaining its temperature within a set range and ensuring safe operation of the burner.

[0030] In some embodiments, the burner unit module 111 is provided with an expansion connection portion, and multiple burner unit modules 111 are assembled into a combustion unit module 11 through the expansion connection portion. The modular combustion device includes at least one combustion unit module 11. The expansion connection portion can be a mutually nested structure, which can minimize the gaps between the burner unit modules and prevent the molten liquid from seeping into the gaps, causing scaling after cooling, making the burner unit modules difficult to bond, replace, and clean.

[0031] In some embodiments, the modular combustion device also includes a replacement module 112, and the replacement module 112 has the same extended connection part as the burner unit module 111. The replacement module can be made of high-temperature resistant material, or it can be made of the same material as the burner unit module 111. In this case, a cooling medium circulation channel is generally provided therein, and is connected through an external cooling medium supply pipeline to continuously provide cooling medium (such as cooling water or cooling oil) to cool the replacement module, maintain its temperature within a set range, and ensure its safe operation. The replacement module is not provided with a combustion nozzle, and is only used to fill the vacant position where the burner unit module is not required, and to block the installation interface on the combustion furnace. The size and shape of the replacement module are preferably consistent with the burner unit mold, which is convenient for overall consistency, coordination, and easy preparation, installation and replacement.

[0032] In some embodiments, the extended connection portion is provided with a sealing structure, and is also provided with a fuel channel connector and a combustion-supporting medium channel connector; in this way, multiple burner unit modules 111 can be connected in series to share a fuel inlet and a combustion-supporting medium inlet, greatly reducing the number of fuel and combustion-supporting medium delivery pipelines outside the combustion furnace, effectively reducing costs and optimizing equipment structure.

[0033] Alternatively, the extended connection portion is provided with a sealing structure and a cooling medium channel connector; in this way, multiple burner unit modules 111 can be connected in series to share a cooling medium inlet and a cooling medium outlet, greatly reducing the number of cooling medium delivery pipelines outside the combustion furnace, effectively reducing costs and optimizing equipment structure.

[0034] Alternatively, the expansion connection portion is provided with a sealing structure, a fuel channel connector, a combustion-supporting medium channel connector, and a cooling medium circulation channel connector, which can minimize costs and optimize the structure.

[0035] exist Figure 2 In the example, each burner unit module 111 is respectively provided with a fuel inlet, a combustion medium inlet and a cooling medium inlet at one end, and a fuel outlet, a combustion medium outlet and a cooling medium outlet 1116 at the other end. In order to connect two adjacent burner unit modules 111 in series, in this example, three U-shaped series pipe fittings 2 are used as a group. The series pipe fittings 2 have an inlet and an outlet, which correspond to the fuel pipeline inlet 21, the combustion medium pipeline inlet 23, the cooling medium pipeline inlet 25, and the fuel pipeline outlet 22 respectively in the figure. , combustion medium pipeline outlet 24, cooling medium pipeline outlet 26, fuel pipeline inlet 21, combustion medium pipeline inlet 23, cooling medium pipeline inlet 25 are respectively connected to the fuel outlet, a combustion medium outlet and a cooling medium outlet 1116 of the previous burner unit module 111, and fuel pipeline outlet 22, combustion medium pipeline outlet 24, cooling medium pipeline outlet 26 are respectively connected to the fuel inlet, a combustion medium inlet and a cooling medium inlet of the next burner unit module 111, thereby connecting multiple adjacent burner unit modules 111 in series. When a replacement module 112 needs to be inserted in the middle, the replacement module 112 is also provided with a fuel inlet, a combustion medium inlet and a cooling medium inlet at one end, and a fuel outlet, a combustion medium outlet and a cooling medium outlet at the other end. Corresponding circulation pipelines are processed in the replacement module entity. Compared with the burner unit module 111, the replacement module 112 is only an unprocessed combustion nozzle 1115. After such modular processing, the design of the pipeline can be optimized and the complexity of the pipeline can be reduced.

[0036] In other embodiments, a plurality of fuel pipeline inlets 21, combustion medium pipeline inlets 23, and cooling medium pipeline inlets 25 can be processed on a rectangular cross-section pipe, corresponding to the fuel inlet, one combustion medium inlet, and one cooling medium inlet of each burner unit module 111 respectively, and a plurality of cooling medium pipeline outlets 26 can be processed on another rectangular cross-section pipe, corresponding to the cooling medium outlet of each burner unit module 111 respectively. In other words, the cooling medium only passes through one burner unit module 111 before being merged into the exhaust pipeline to improve the cooling efficiency and cooling consistency. The burner unit module 111 does not need to further process the fuel outlet and the combustion medium outlet, and the supply relationship of the fuel and the combustion medium also adopts a parallel mode, which also helps to ensure the consistency and stability of the supply flow of each burner unit module 111.

[0037] The present invention also provides a combustion furnace comprising any one of the above-mentioned modular combustion devices.

[0038] In a specific implementation, the distance between the combustion nozzle 1115 and the inner wall of the combustion furnace is not less than 50 mm, so as to prevent the high temperature of the flame from damaging the fireplace body in the combustion furnace.

[0039] In order to improve the heat utilization efficiency, the combustion device is arranged below the liquid surface of the liquid formed by the melting of the processed material.

[0040] In some embodiments, a plurality of burner unit modules 111 are arranged in a combustion furnace, and the grooves formed between the burner unit modules 111 constitute a guide flow channel for the liquid formed by the melt of the processed material. The immersion combustion method is mainly used to heat glass or other metal materials with a high melting point. The liquid inside the combustion furnace is not easy to produce convection that conforms to the production process, and a part of the material that is not fully melted will flow out of the discharge port, causing quality problems in the product. This solution creatively generates different strong convections in the liquid in the combustion furnace through the installation arrangement of multiple burner unit modules, so that the heated liquid material is heated and melted more evenly.

[0041] Furthermore, the number of burner unit modules installed per square meter of the installation area of the inner wall of the combustion furnace is 1 to 20, and each burner unit module is provided with 5 to 10 combustion flame ports.

[0042] The present invention also provides a method for arranging an immersed burner, wherein a combustion device with a combustion jet is arranged below the liquid surface of a liquid formed by melting the processed material.

[0043] Furthermore, the combustion device is any of the modular combustion devices described above, and a plurality of burner unit modules are arranged in the combustion furnace, and the grooves formed between the burner unit modules constitute guide flow channels for the liquid formed by the melt of the processed material.

[0044] Furthermore, the distance between the combustion nozzle and the inner wall of the combustion furnace is not less than 50 mm.

[0045] In actual use, a single, relatively low-power burner is used as an independent burner unit module 111, and the number of independent burner unit modules 111 is selected and set according to different process requirements to form the entire combustion system. The number and position of the independent burner unit modules 111 can be adjusted accordingly according to different processes and requirements.

[0046] By increasing or decreasing the number of burner unit modules 111 , the maximum combustion power can be adjusted.

[0047] The independent low-power burner unit module 111 generally uses gaseous fuel, which includes but is not limited to natural gas, liquefied gas, hydrogen, propane, etc.; the combustion-supporting medium includes but is not limited to air and oxygen.

[0048] In an independent burner unit module 111, the number of combustion burners 1115 can be 1 to 20, preferably 5 to 10. A single or multiple combustion burners 1115 can be used, with the power of a single burner burner 1115 ranging from 5 to 50 kW, preferably 10 to 30 kW. The power of a single burner unit module 111 can range from 10 to 1000 kW, preferably 100 to 300 kW.

[0049] The number of burner unit modules 111 that can be installed on 1 square meter of the combustion furnace installation area is 1 to 20 (each burner unit module 111 includes 5 to 10 combustion nozzles 1115), and 5 to 10 burner unit modules 111 are preferred.

[0050] In the burner unit module 111, when the flame nozzle 1115 is installed, its flame spraying surface can be flush with, protruding from, or recessed from the furnace wall 31 surface (this furnace wall 31 surface includes but is not limited to the vertical surface of the furnace wall 31, and can also be the horizontal surface).

[0051] Each combustion unit module 11 can be installed with different numbers of burner unit modules 111 according to different process requirements, and the installation position of each burner unit module 111 can also be installed in different positions according to process requirements.

[0052] At the same time, the replacement module 112 can be removed and replaced with the burner unit module 111, which is conducive to adjusting the configuration of the combustion device and adjusting the combustion effect.

[0053] When the production power of the combustion furnace needs to be increased, it is only necessary to replace the replacement module 112 with a normal burner unit module 111 to increase the production power of the entire combustion furnace.

[0054] Figure 1 In the example, the combustion furnace includes a furnace wall 31, the combustion device is arranged on the furnace wall 31, the furnace wall 31 includes a furnace bottom surface, and the combustion device is arranged on the furnace bottom surface.

[0055] The installation position of the combustion device is below the liquid level of the heated liquid in the combustion furnace, which can be the bottom position of the combustion furnace or the side wall position of the combustion furnace, among which the bottom position is preferred.

[0056] The combustion nozzles 1115 in the burner module 111 must maintain a minimum safety distance from the nearest surface of the furnace wall 31 (this surface includes, but is not limited to, vertical surfaces of the furnace wall 31, and may also include horizontal surfaces such as the bottom) to prevent the emitted flame from eroding the furnace wall 31. This safety distance is related to the maximum power of the burner module 111 and the size of the water-cooling area of the burner module 111. The greater the power, the larger the flame, the larger the area affected by the flame, and the greater the distance from the furnace wall 31.

[0057] Generally, this safety distance is at least 50 mm.

[0058] A plurality of burner unit modules 111 can form a larger combustion unit module 11 , and the burner unit modules 111 within the same combustion unit module 11 can be combined together in parallel or in series through pipelines.

[0059] The burner unit module 111 can be used individually, or a plurality of burner unit modules 111 can be combined to form a large combustion unit module 11 for combined use.

[0060] Furthermore, the combustion unit module 11 further includes a flow controller, which is connected to the burner unit module 111 respectively and is used to control the flow of both the fuel and the auxiliary fuel in the burner unit module 111 .

[0061] Each burner unit module 111 can be equipped with a separate flow controller to control the flow of fuel and combustion-supporting medium; or a combustion unit module 11 can share a set of flow controllers to control the flow, thereby saving equipment costs.

[0062] Furthermore, the burner unit module 111 further includes two channels, a fuel channel and an auxiliary fuel channel, and the size ratio of the two channels matches the flow ratio of the fuel and the auxiliary fuel.

[0063] In actual use, the primary fuels used are gaseous natural gas, hydrogen, and liquefied petroleum gas, while auxiliary fuels are primarily oxygen or air. Currently, natural gas and oxygen are the primary fuels used. The flow ratio between the two is based on the chemical reaction's complete combustion ratio and is also adjusted based on the on-site furnace's process requirements.

[0064] In the combustion nozzle 1115 of the burner unit module 111, the size ratio of the fuel channel and the auxiliary fuel channel meets the flow ratio requirement between the two to achieve sufficient combustion.

[0065] Furthermore, the processing material includes at least one of the following: water, glass, basalt, metal and metal oxide.

[0066] Liquid substances are molten liquids of processing materials. Processing materials include substances that can be heated and melted at a certain temperature, including but not limited to water, glass, basalt, metals, metal oxides, etc. Among them, glass and rock, which have higher melting points, are the main heating targets.

[0067] It should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation method can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0068] The series of detailed descriptions listed above are only specific descriptions of the feasible implementation methods of this application and are not intended to limit the scope of protection of this application. Any equivalent implementation methods or changes that do not deviate from the technical spirit of this application should be included in the scope of protection of this application.

Claims

1. A modular combustion device for use in a combustion furnace, characterized in that: The combustion device comprises at least two burner unit modules; the burner unit module comprises at least one combustion flame blasting port, and the combustion flame blasting port is provided with a fuel channel and a combustion medium channel; The burner unit module is provided with an expansion connection portion, and a plurality of burner unit modules are assembled into a combustion unit module through the expansion connection portion. The modular combustion device includes at least one combustion unit module; The expansion connection portion is provided with a sealing structure, a fuel channel connector and a combustion-supporting medium channel connector; Alternatively, the expansion connection portion is provided with a sealing structure and a cooling medium channel connector; Alternatively, the expanded connection portion is provided with a sealing structure, and is further provided with a fuel channel connector, a combustion-supporting medium channel connector, and a cooling medium circulation channel connector.

2. The modular combustion device according to claim 1, characterized in that The burner unit module is provided with a cooling medium circulation channel.

3. The modular combustion device according to claim 2, characterized in that The modular combustion device further comprises a supplementary module, wherein the supplementary module has the same extended connection portion as the burner unit module.

4. A combustion furnace, characterized in that: A modular combustion device comprising any one of claims 1 to 3.

5. The combustion furnace according to claim 4, characterized in that The distance between the combustion nozzle and the inner wall of the combustion furnace is not less than 50 mm.

6. The combustion furnace according to claim 4, characterized in that The combustion device is arranged below the liquid surface of the liquid formed by melting the processed material.

7. The combustion furnace according to claim 4, characterized in that A plurality of burner unit modules are arranged in the combustion furnace, and grooves formed between the burner unit modules constitute guide flow channels for liquid formed by melting the processed material.

8. The combustion furnace according to claim 7, characterized in that The number of burner unit modules installed on each square meter of the installation area of the inner wall of the combustion furnace is 1 to 20, and each burner unit module is provided with 5 to 10 combustion flame ports.

9. A method for arranging an immersed burner, characterized in that: A combustion device with a combustion nozzle is arranged below the liquid surface of the liquid formed by the melted material being processed; the combustion device is a modular combustion device as described in any one of claims 1 to 3, and a plurality of burner unit modules are arranged in the combustion furnace, and the grooves formed between the burner unit modules constitute a guide flow channel for the liquid formed by the melted material being processed.

10. The method for arranging an immersed burner according to claim 9, characterized in that: The distance between the combustion nozzle and the inner wall of the combustion furnace is not less than 50 mm.

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