Gasification burner heat pipe wall heat insulation shield
By setting up a heat pipe wall insulation shield outside the gasification burner and using phase change cooling technology, the problem of high temperature damage of the gasification burner is solved, extending its service life, and improving the operating stability of the gasification furnace.
Patent Information
- Application Number
- CN202422412564.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-09-30
AI Technical Summary
Existing gasification burners are susceptible to high temperature damage, which affects the long-term operation of the gasification furnace and the quality of the synthesis gas, resulting in economic losses.
A heat pipe wall insulation shield of the gasification burner is designed, including a cylinder, a connecting structure, a heat pipe wall screen and a cooling chamber. By setting a heat pipe wall screen outside the gasification burner and setting a cooling chamber in the middle or tail, the temperature of the heat pipe wall screen is reduced by using phase change cooling technology to reduce the absorption of radiant heat.
It significantly reduces the working temperature of the gasification burner, extends its service life, avoids high temperature damage, and improves the continuous operation capability of the gasification furnace.
Smart Images
Figure CN223176069U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of chemical equipment, and particularly relates to a heat-insulating shield for the heat pipe wall of a gasification burner. Background Art
[0002] The gasification burner is one of the core equipment of the gasifier, and its main function is to spray pulverized coal / coal slurry and gasifying agent into the gasifier for partial oxidation and reduction reactions. The structure and operating conditions of the burner directly affect the long-term operation of the gasifier, the quality of the syngas, and the carbon conversion rate.
[0003] The service life of the gasification burner is related to the continuous operation of the gasifier. The combustion flame temperature in the gasifier is very high, usually exceeding 1200°C, and the head of the gasification burner is often damaged due to high heat flux. The shutdown and maintenance of the gasifier caused by the damage of the gasification burner result in huge economic losses to production enterprises. Therefore, solving the problem of high-temperature damage of the burner has become a main aspect of extending the service life of the burner. Content of the Utility Model
[0004] Therefore, the technical problem to be solved by the utility model is to overcome the problem of high-temperature damage of the burner in the prior art, so as to provide a heat-insulating shield for the heat pipe wall of a gasification burner.
[0005] To solve the above technical problem, the utility model provides a heat-insulating shield for the heat pipe wall of a gasification burner, including: a cylinder body; a connection structure provided at the tail of the cylinder body, and the connection structure is used to connect the gasification burner; a heat pipe wall screen connected to the head of the cylinder body; and a cooling chamber provided in the middle or at the tail of the heat pipe wall screen.
[0006] Further, the heat pipe wall screen includes heat pipes and flat steel. There are multiple heat pipes, and the central axes of the multiple heat pipes are uniformly and vertically arranged on concentric circles. The flat steel is used to connect two adjacent heat pipes; a heating surface is provided at the head of the heat pipe wall screen, and the heating surface is a plane or a conical table surface.
[0007] Further, the heat pipe wall screen is welded to the head of the cylinder body.
[0008] Further, the diameter of the concentric circle formed by the central axis of the heat pipe wall screen is the same as the middle diameter of the cylinder body.
[0009] Further, the length of the cooling chamber is 1 / 3 - 1 / 2 of the length of the heat pipe wall screen.
[0010] Further, the cooling chamber has an inlet and an outlet, and the inlet and the outlet are located on both sides of the cylinder body.
[0011] Further, the cooling medium in the cooling chamber is water or heat-conducting oil.
[0012] Further, the cone angle between the conical table surface and the cylinder body is ≥ 60°.
[0013] Further, the gap between the hot wall tube screen and the gasification burner is ≤ 2 mm.
[0014] Further, the connection structure is a connecting flange.
[0015] The technical solution of the present utility model has the following advantages:
[0016] 1. The present utility model provides a heat-insulating shield for the hot wall tube of a gasification burner, including: a cylinder body; a connection structure provided at the tail of the cylinder body, and the connection structure is used to connect the gasification burner; a hot wall tube screen connected to the head of the cylinder body; and a cooling chamber provided in the middle or at the tail of the hot wall tube screen.
[0017] By providing a connection structure at the tail of the cylinder body, the connection between the cylinder body and the gasification burner can be realized by using the connection structure; at the same time, a hot wall tube screen is provided at the head of the cylinder body, and a cooling chamber is provided in the middle or at the tail of the hot wall tube screen, and the cooling chamber is used to cool the hot wall tube screen, and then cool the gasification burner.
[0018] The heat-insulating shield for the hot wall tube of the gasification burner has a simple structure, is adaptable to burners of different existing technologies, and is easy to assemble. By using the most direct way to reduce the working temperature of the burner, a heat-insulating shield for the hot wall tube is provided outside the gasification burner to reduce the radiant heat received by the shell of the gasification burner and solve the problem of high-temperature damage of the burner. At the same time, by using the phase change cooling technology, the working fluid of the hot wall tube screen vaporizes to absorb the high-throughput radiant heat received by the heat-insulating shield for the hot wall tube, significantly reducing the temperature of the heat-insulating shield for the hot wall tube and avoiding damage to the heat-insulating shield for the hot wall tube caused by high temperature, thus improving the service life of the heat-insulating shield for the hot wall tube.
[0019] 2. For the heat-insulating shield for the hot wall tube of the gasification burner provided by the present utility model, the hot wall tube screen is welded to the head of the cylinder body. In this way, the hot wall tube screen is welded to the cylinder body, increasing the connection strength and connection stiffness between the hot wall tube screen and the cylinder body, ensuring the stability of the connection between the hot wall tube screen and the cylinder body, and avoiding loosening and falling off.
[0020] 3. For the heat-insulating shield for the hot wall tube of the gasification burner provided by the present utility model, the length of the cooling chamber is 1 / 3 - 1 / 2 of the length of the hot wall tube screen. This setting method can ensure that the length of the cooling chamber is sufficient to radiate the entire length of the gasification burner, that is, effectively cool the gasification burner.
[0021] The utility model content is provided to introduce the selection of concepts in a simplified form, which will be further described in the following detailed implementation. The utility model content is not intended to identify the important features or essential features of the present disclosure, nor is it intended to limit the scope of the present disclosure. Brief Description of the Drawings
[0022] To more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0023] Figure 1 Structural schematic diagram of the first form of the heat insulation shield for the hot wall of the gasification burner provided by the present utility model;
[0024] Figure 2 Structural schematic diagram of the second form of the heat insulation shield for the hot wall of the gasification burner provided by the present utility model;
[0025] Figure 3 Structural schematic diagram of the connection between the first form of the heat insulation shield for the hot wall of the gasification burner provided by the present utility model and the gasification burner;
[0026] Figure 4 Structural schematic diagram of the connection between the second form of the heat insulation shield for the hot wall of the gasification burner provided by the present utility model and the gasification burner;
[0027] Figure 5 Structural schematic diagram of the heat pipe of the first form of the heat insulation shield for the hot wall of the gasification burner provided by the present utility model;
[0028] Figure 6 Structural schematic diagram of the heat pipe of the second form of the heat insulation shield for the hot wall of the gasification burner provided by the present utility model.
[0029] Explanation of reference numerals:
[0030] 1, cylinder body; 3, heating surface; 4, connection structure; 5, gasification burner; 6, hot wall screen; 7, inlet; 8, outlet; 9, heat pipe; 10, flat steel; 11, cooling chamber. Specific embodiments
[0031] In the following text, only some exemplary embodiments are briefly described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present disclosure. Therefore, the drawings and the description are considered to be exemplary in nature rather than restrictive.
[0032] In the description of the present disclosure, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present disclosure. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present disclosure, "a plurality" means two or more unless otherwise specifically defined.
[0033] In the description of the present disclosure, it should be noted that unless otherwise clearly specified and limited, the terms "mounted", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a connection that allows mutual communication; it can be directly connected, or indirectly connected through an intermediate medium, and can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.
[0034] In the present disclosure, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over", and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath", and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.
[0035] The following disclosure provides many different embodiments or examples for implementing different structures of the present disclosure. To simplify the disclosure of the present disclosure, components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present disclosure. In addition, the present disclosure may repeat reference numerals and / or reference letters in different examples. This repetition is for the purpose of simplification and clarity and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present disclosure provides examples of various specific processes and materials, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.
[0036] The preferred embodiments of the present disclosure are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only for the purpose of illustrating and explaining the present disclosure and are not used to limit the present disclosure.
[0037] Please refer to Figures 1 to 6 As shown, the present utility model provides a heat pipe wall heat insulation shield for a gasification burner, including: a cylinder body 1; a connection structure 4 provided at the tail of the cylinder body 1, and the connection structure 4 is used to connect a gasification burner 5; a heat pipe wall screen 6 connected to the head of the cylinder body 1; and a cooling chamber 11 provided in the middle or at the tail of the heat pipe wall screen 6.
[0038] By providing the connection structure 4 at the tail of the cylinder body 1, the connection between the cylinder body 1 and the gasification burner 5 can be realized by using the connection structure 4; at the same time, the heat pipe wall screen 6 is provided at the head of the cylinder body 1, and the cooling chamber 11 is provided in the middle or at the tail of the heat pipe wall screen 6, and the cooling chamber 11 is used to cool the heat pipe wall screen 6, thereby cooling the gasification burner 5.
[0039] This heat pipe wall heat insulation shield for a gasification burner has a simple structure, is adaptable to burners of different existing technologies, and is easy to assemble. By using the most direct way to reduce the working temperature of the burner, a heat pipe wall heat insulation shield is provided outside the gasification burner 5 to reduce the radiant heat received by the shell of the gasification burner 5 and solve the problem of high-temperature damage of the burner. At the same time, by using the phase change cooling technology, the working fluid of the heat pipe wall screen 6 vaporizes to absorb the high-flux radiant heat received by the heat pipe wall heat insulation shield, significantly reducing the temperature of the heat pipe wall heat insulation shield and avoiding damage to the heat pipe wall heat insulation shield caused by high temperature, thus improving the service life of the heat pipe wall heat insulation shield.
[0040] In some alternative embodiments, the heat pipe wall screen 6 includes heat pipes 9 and flat steels 10. There are multiple heat pipes 9, and the central axes of the multiple heat pipes 9 are uniformly and vertically arranged on concentric circles. The flat steels 10 are used to connect two adjacent heat pipes 9; a heating surface 3 is provided at the head of the heat pipe wall screen 6, and the heating surface 3 is a plane or a conical table surface.
[0041] Through the combined setting of the heat pipe 9 and the flat steel 10, that is, using the flat steel 10 to connect two adjacent heat pipes 9, thereby jointly forming the heat pipe wall screen 6.
[0042] Among them, the working temperature of the heat pipe wall insulation shield of the gasification burner is 600 - 1500 °C. The heating surface 3 has two forms. The first form is a plane, and the second form is a conical table surface.
[0043] In this embodiment, the heat pipe wall screen 6 is welded to the head of the cylinder body 1. In this way, the heat pipe wall screen 6 is welded to the cylinder body 1, increasing the connection strength and connection stiffness between the heat pipe wall screen 6 and the cylinder body 1, ensuring the stability of the connection between the heat pipe wall screen 6 and the cylinder body 1, and avoiding loosening and falling off.
[0044] Specifically, the diameter of the concentric circle formed by the central axis of the heat pipe wall screen 6 is the same as the median diameter of the cylinder body 1.
[0045] In this embodiment, the length of the cooling chamber 11 is 1 / 3 - 1 / 2 of the length of the heat pipe wall screen 6. This setting method can ensure that the length of the cooling chamber 11 is sufficient to radiate the entire length of the gasification burner 5, that is, effectively cool the gasification burner 5.
[0046] Among them, the cooling chamber 11 has an inlet 7 and an outlet 8, and the inlet 7 and the outlet 8 are located on both sides of the cylinder body 1.
[0047] Cooling liquid is provided in the cooling chamber 11. The cooling liquid enters from the inlet 7, cools the heat pipe wall screen 6, and then cools the gasification burner 5, and then flows out from the outlet 8.
[0048] Specifically, the cooling medium in the cooling chamber 11 is water or heat-conducting oil.
[0049] Among them, the conical angle between the conical table surface and the cylinder body 1 ≥ 60°. The setting of this angle can be determined according to the actual situation.
[0050] In this embodiment, the connection structure 4 is a connecting flange. The cylinder body 1 is nested outside the adapted gasification burner 5. The connection structure 4 is flange-connected to the gasification burner 5 and is installed on the wall of the gasification furnace through the gasification burner 5.
[0051] The inner contour of the cylinder body 1 fits the matching gasification burner 5, and the gap between the heat pipe wall screen 6 and the gasification burner 5 ≤ 2 mm.
[0052] Obviously, the above embodiments are merely examples given for clear illustration and not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or alterations can be made based on the above description. It is not necessary and impossible to exhaustively list all implementation manners here. And the obvious changes or alterations derived therefrom still fall within the protection scope of the present utility model creation.
Claims
1. A heat-insulating shield for the hot wall of a gasification burner, characterized in that, Comprising: A cylinder body (1); A connection structure (4), provided at the tail of the cylinder body (1), and the connection structure (4) is used to connect a gasification burner (5); A heat pipe wall screen (6), connected to the head of the cylinder body (1); A cooling chamber (11), provided in the middle or at the tail of the heat pipe wall screen (6).
2. The heat-insulating shield for the hot wall of the gasification burner nozzle according to claim 1, characterized in that, The heat pipe wall screen (6) includes heat pipes (9) and flat steel (10). There are multiple heat pipes (9), and the central axes of the multiple heat pipes (9) are uniformly arranged vertically on concentric circles. The flat steel (10) is used to connect two adjacent heat pipes (9); A heating surface (3) is provided at the head of the heat pipe wall screen (6), and the heating surface (3) is a plane or a frustum surface.
3. The heat-insulating shield for the hot wall of the gasification burner nozzle according to claim 1, characterized in that, The heat pipe wall screen (6) is welded to the head of the cylinder body (1).
4. A heat-insulating shield for the hot wall of a gasification burner nozzle according to any one of claims 1 to 3, characterized in that The diameter of the concentric circle formed by the central axis of the heat pipe wall screen (6) is the same as the middle diameter of the cylinder body (1).
5. The heat-insulating shield for the hot wall of a gasification burner nozzle according to claim 4, characterized in that, The length of the cooling chamber (11) is 1 / 3 - 1 / 2 of the length of the heat pipe wall screen (6).
6. The thermal insulation shield for the hot wall of a gasification burner nozzle according to claim 5, characterized in that, The cooling chamber (11) has an inlet (7) and an outlet (8), and the inlet (7) and the outlet (8) are located on both sides of the cylinder body (1).
7. The heat-insulating shield for the hot wall of a gasification burner nozzle according to claim 6, characterized in that, The cooling medium in the cooling chamber (11) is water or heat-conducting oil.
8. The heat-insulating shield for the hot wall of a gasification burner nozzle according to claim 2, characterized in that, The cone angle between the frustum surface and the cylinder body (1) ≥ 60°.
9. The heat-insulating shield for the hot wall of a gasification burner nozzle according to claim 1, characterized in that, The gap between the heat pipe wall screen (6) and the gasification burner (5) ≤ 2 mm.
10. The heat-insulating shield for the hot wall of the gasification burner nozzle according to claim 1, characterized in that, The connection structure (4) is a connection flange.