Heat insulation sealing device and fixed bed
By combining the insulation layer, substrate, and insulation nails, the problems of cumbersome operation and unstable structure of the insulation device for the ignition port of the fixed bed are solved, achieving simple and effective sealing and improved stability.
Patent Information
- Application Number
- CN202522036865.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-23
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2035-09-23
AI Technical Summary
Existing heat insulation devices for fixed bed ignition ports have problems such as cumbersome operation, easy cracking of refractory mortar leading to smoke spread, and unstable equipment structure.
It adopts a combination structure of heat insulation layer, base plate and heat insulation nail. The heat insulation layer is fixed to the base plate by heat insulation nail to form an integral structure. The ignition port can be inserted or removed. The combination of multi-layer sub-heat insulation layer and steel strip enhances the sealing effect.
It achieves simple operation, effective sealing and enhanced structural stability of the fixed bed, reduces heat leakage and extends equipment life.
Smart Images
Figure CN223535046U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of pyrolysis gasification furnace technology, and in particular to a heat-insulating sealing device and a fixed bed. Background Technology
[0002] Currently, the insulation of the ignition port of a fixed bed is usually achieved by laying refractory bricks at the ignition port, with gaps between the refractory bricks. Refractory mortar is then applied to these gaps. However, the bricklaying and mortar application for sealing are cumbersome and inconvenient. Furthermore, cracking of the mortar after prolonged sealing can cause smoke to spread into the room. In addition, the refractory bricks used for the ignition port are quite heavy, and long-term use can cause stress fatigue on the weld seams of the equipment below the pipe, which is detrimental to the stability of the equipment structure. Utility Model Content
[0003] This application aims to at least partially solve one of the technical problems in the related art, and the main technical solutions adopted in this application include:
[0004] In a first aspect, this application provides a heat-insulating sealing device for sealing the ignition port of a fixed bed, comprising a heat-insulating layer, a substrate, and heat-insulating nails. Along the thickness direction of the substrate, the substrate has a first side and a second side disposed opposite to each other. The heat-insulating nails are disposed on the first side and pass through the heat-insulating layer.
[0005] The heat insulation and sealing device proposed in this application embodiment has one end of the heat insulation nail connected to the first side of the substrate, and the other end of the heat insulation nail extending away from the substrate along the thickness direction of the substrate. The heat insulation nail passes through the heat insulation layer to connect and fix the heat insulation layer to the substrate, so that the heat insulation layer, the substrate and the heat insulation nail form an integral structure. It can be inserted into the ignition port of the fixed bed as a whole or removed from the ignition port. Its structure is simple and the whole operation is simple and convenient.
[0006] Optionally, the heat insulation layer includes multiple sub-heat insulation layers, which are stacked along the thickness direction of the substrate.
[0007] In the above scheme, each sub-insulation layer provides a certain thermal resistance, which increases the total thermal resistance that needs to be overcome for heat to transfer from the high-temperature side to the low-temperature side, thereby improving the thermal insulation performance of the insulation layer.
[0008] Optionally, along the thickness direction of the substrate, the projection of the substrate falls within the projection of the heat insulation layer.
[0009] In the above scheme, the outer diameter of the heat insulation layer is larger than the outer diameter of the substrate, so that the heat insulation layer is compressed inside the ignition port, thereby forming a seal inside the ignition port and reducing heat leakage.
[0010] Optionally, the insulation layer includes at least one of rock wool layer, glass fiber layer, aluminum silicate layer, and aerogel composite layer.
[0011] In the above solution, the insulation layer is made of lightweight material, making it easy to handle.
[0012] Optionally, there are multiple insulation nails, which are spaced apart on the first side and extend in a direction away from the second side.
[0013] In the above solution, multiple insulation nails form multi-point support on the insulation layer, reducing the warping, bulging or collapse of the insulation layer, improving the stability of the insulation layer structure, and thus improving the insulation and sealing effect.
[0014] Optionally, along the thickness direction of the substrate, the insulation nail has a first end and a second end disposed opposite to each other, the first end being connected to the substrate, and the cross-sectional area of the insulation nail gradually decreasing from the first end to the second end.
[0015] In the above scheme, the cross-sectional area of the insulation nail gradually decreases from the first end to the second end, making the insulation nail conical in shape, which plays a self-guiding role and facilitates insertion and fixing of the insulation layer.
[0016] Optionally, the thermal insulation sealing device further includes a steel strip surrounding the thermal insulation layer.
[0017] In the above scheme, the steel strip is wrapped around the outer periphery of the insulation layer to tighten the insulation layer, improve the fixing effect of the insulation layer, and reduce the risk of the insulation layer falling off.
[0018] Optionally, there are multiple steel strips arranged sequentially along the thickness direction of the substrate.
[0019] In the above scheme, multiple steel strips can be spaced apart or connected to each other in sequence to improve the fastening effect of the insulation layer.
[0020] Optionally, the heat-insulating sealing device also includes a handle, which is located on the second side, and the handles are arranged in pairs.
[0021] In the above scheme, a handle is provided on the second side of the substrate to facilitate inserting or removing the heat insulation sealing device from the ignition port.
[0022] Secondly, this application also provides a fixed bed, including a furnace body and the heat insulation and sealing device described in any of the above embodiments, wherein the furnace body has an ignition port; the heat insulation and sealing device is detachably disposed at the ignition port.
[0023] The fixed bed in this embodiment includes the heat insulation and sealing device described in any of the above embodiments, and has the beneficial effects of the heat insulation and sealing device described in any of the above embodiments. Attached Figure Description
[0024] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0025] Figure 1 This is a schematic diagram of the thermal insulation and sealing device of this application;
[0026] Figure 2 This is a schematic diagram of the structure of the substrate and insulation nail in the heat insulation and sealing device of this application;
[0027] Figure 3 This is a schematic diagram of the thermal insulation and sealing device of this application;
[0028] Figure 4 This is a schematic diagram of the fixed bed in this application.
[0029] [Explanation of Labels in the Attached Image]
[0030] 1. Insulation layer;
[0031] 2. Substrate; 21. First side surface; 22. Second side surface;
[0032] 3. Insulation nail; 31. First end; 32. Second end;
[0033] 4. Steel strip;
[0034] 5. Handle;
[0035] 101. Furnace body; 102. Ignition port; 103. Support frame; 104. Feed port; 105. Ash and slag collection structure; 106. Pyrolysis gas exhaust port; 107. Water seal structure; 108. Gas path switching device; 109. Jacket;
[0036] X represents the thickness direction of the substrate. Detailed Implementation
[0037] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0038] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.
[0039] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.
[0040] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0041] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.
[0042] In this application, "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).
[0043] Following oil and gas, methanol is hailed as the "most ideal" renewable clean fuel. Furthermore, methanol is also a hydrogen carrier, enabling hydrogen-methanol-hydrogen conversion, providing a new solution to the storage and transportation challenges that have long plagued the hydrogen energy industry. Biomass-to-methanol production is one of the pathways to produce green methanol. Biomass gasification is a crucial step in biomass-to-methanol production. Biomass gasification refers to the process of incomplete combustion of biomass feedstock under certain temperature conditions, by controlling the oxygen supply, ultimately converting it into combustible gases with CO, H2, and CH4 as its main components.
[0044] Commonly used gasifiers for biomass gasification include fixed-bed gasification furnaces, fluidized-bed gasification furnaces, and entrained gasification furnaces. Currently, the insulation of the ignition port of a fixed-bed gasifier usually involves laying refractory bricks at the ignition port, with gaps between the refractory bricks. Refractory mortar is then applied to these gaps. However, the bricklaying and mortar application for sealing are cumbersome and inconvenient. Furthermore, cracking of the mortar after prolonged sealing can cause flue gas to spread into the room. Additionally, the refractory bricks laid at the ignition port are quite heavy, and long-term use can cause stress fatigue on the weld seams of the equipment below the pipe, which is detrimental to the stability of the equipment structure.
[0045] Therefore, there is a need for a heat insulation and sealing device that is simple in structure, easy to operate, and has good heat insulation and sealing performance, which can improve the convenience of installation and maintenance and enhance the stability of the fixed bed.
[0046] Firstly, reference Figures 1 to 3 This application provides a heat insulation sealing device for sealing the ignition port 102 of a fixed bed. It includes a heat insulation layer 1, a substrate 2, and a heat insulation nail 3. Along the thickness direction X of the substrate 2, the substrate 2 has a first side 21 and a second side 22 disposed opposite to each other. The heat insulation nail 3 is disposed on the first side 21 and passes through the heat insulation layer 1 to fix the heat insulation layer 1 to the substrate 2.
[0047] One end of the insulation nail 3 is connected to the first side surface 21 of the substrate 2, and the other end of the insulation nail 3 extends away from the substrate 2 along the thickness direction X of the substrate 2. The insulation nail 3 passes through the heat insulation layer 1 to connect and fix the heat insulation layer 1 to the substrate 2, so that the heat insulation layer 1, the substrate 2, and the insulation nail 3 are constructed as a whole. The whole formed by the heat insulation layer 1, the substrate 2, and the insulation nail 3 can be inserted into the ignition port 102 to seal the ignition port 102, thereby achieving sealing and heat insulation of the ignition port 102. The connection method between the insulation nail 3 and the substrate 2 can be welding. The substrate 2 can be a carbon steel plate or a stainless steel plate, depending on the operating conditions of the fixed bed.
[0048] In other words, the heat insulation nail 3 in this application constructs the heat insulation layer 1 and the substrate 2 into an integral structure, which can be inserted into the ignition port 102 of the fixed bed or removed from the ignition port 102. Its structure is simple and the whole operation is simple and convenient.
[0049] Optionally, the insulation layer 1 includes multiple sub-insulation layers stacked along the thickness direction X of the substrate 2. Each sub-insulation layer provides a certain thermal resistance, increasing the total thermal resistance that needs to be overcome for heat to transfer from the high-temperature side to the low-temperature side, thereby improving the insulation performance of the insulation layer 1.
[0050] Optionally, along the thickness direction X of the substrate 2, the projection of the substrate 2 falls within the projection of the heat insulation layer 1. The outer diameter of the heat insulation layer 1 is larger than the outer diameter of the substrate 2, and the outer diameter of the heat insulation layer 1 is larger than the inner diameter of the ignition port 102, so that the heat insulation layer 1 is compressed within the ignition port 102, thereby forming a seal within the ignition port 102 and reducing heat leakage.
[0051] For example, the outer diameter of the heat insulation layer 1 is 1mm-2mm larger than the outer diameter of the substrate 2, and the outer diameter of the heat insulation layer 1 is 1mm-3mm larger than the inner diameter of the ignition port 102. When the heat insulation sealing device is placed on the ignition port 102, the heat insulation layer 1 is compressed and squeezed into a structure similar to an O-ring, which achieves the effect of annular sealing.
[0052] Optionally, the insulation layer 1 includes at least one of a rock wool layer, a glass fiber layer, an aluminum silicate layer, and an aerogel composite layer. The rock wool layer is made of rock wool, the glass fiber layer is made of glass fiber, the aluminum silicate layer is made of aluminum silicate, and the aerogel composite layer is made of aerogel composite material. The insulation layer 1 is lightweight and easy to handle. Furthermore, because the resulting insulation and sealing device is lightweight, it has minimal impact on the structure of the fixed bed even after prolonged use, thus improving the structural stability of the fixed bed. The insulation layer 1 can be one or more of the following: rock wool, glass fiber, aluminum silicate, and aerogel composite material. For example, one layer of insulation may be made of rock wool, another layer of glass fiber, and another layer of aluminum carbonate. Multiple layers of insulation can be stacked with any material, as long as they can seal and insulate the ignition port 102. The aluminum silicate may be zirconium-containing aluminum silicate.
[0053] In this embodiment, the sub-insulation layer adopts a non-woven structure, such as needle-punched blanket. Needle-punched blanket is easy to obtain and can be cut into a shape that matches the ignition port, such as a circle, as needed. It is also easy to replace later. The failed insulation layer is removed, and the new sub-insulation layer is fixed by inserting insulation nails in a stacked manner until the desired thickness is achieved (the thickness is set according to actual needs, for example, the thickness is controlled between 20cm and 30cm).
[0054] Optionally, refer to Figure 2Multiple insulating nails 3 are spaced apart on the first side 21 and extend away from the second side 22. These multiple insulating nails 3 fix the insulation layer 1 to the substrate 2, forming multi-point support on the insulation layer 1. This reduces warping, bulging, or collapse of the insulation layer 1, improving the stability of the insulation layer 1 structure and thus enhancing the insulation and sealing effects.
[0055] For example, multiple insulation nails 3 are evenly distributed on the substrate 2, and the multiple insulation nails 3 form a uniform and stable constraint on the insulation layer 1, reducing the deformation, delamination, peeling and collapse of the insulation layer 1, and improving the structural stability and safety reliability of the insulation sealing device.
[0056] Optionally, refer to Figure 2 Along the thickness direction X of the substrate 2, the insulation nail 3 has a first end 31 and a second end 32 disposed opposite to each other. The first end 31 is connected to the substrate 2, and the cross-sectional area of the insulation nail 3 gradually decreases from the first end 31 to the second end 32. It should be noted that the cross-section of the insulation nail 3 is a cross-section along the thickness direction X of the substrate 2. The gradual decrease in cross-sectional area from the first end 31 to the second end 32 makes the insulation nail 3 conical in shape, which serves as a self-guiding mechanism, facilitating insertion and fixation of the insulation layer 1.
[0057] Optionally, refer to Figures 1 to 3 The heat insulation sealing device also includes a steel strip 4, which surrounds the heat insulation layer 1. The steel strip 4 surrounds the outer circumference of the heat insulation layer 1 to tighten the heat insulation layer 1, improve the fixing effect of the heat insulation layer 1, and reduce the risk of the heat insulation layer 1 falling off. The steel strip 4 can be carbon steel, alloy steel, or stainless steel, such as 1Cr18Ni9Ti austenitic stainless steel.
[0058] Optionally, refer to Figures 1 to 3 There are multiple steel strips 4 arranged sequentially along the thickness direction X of the substrate 2. The multiple steel strips 4 can be spaced apart or connected to each other in sequence, as long as the fastening effect of the heat insulation layer 1 can be improved.
[0059] Optionally, refer to Figures 1 to 3 The heat insulation sealing device also includes a handle 5, which is located on the second side 22. The handle 5 is provided on the second side 22 of the substrate 2 to facilitate inserting or removing the heat insulation sealing device from the ignition port 102. Exemplarily, the handles 5 may be provided in pairs to facilitate inserting or removing the heat insulation sealing device. The handles 5 may be formed by bending round steel.
[0060] The heat insulation sealing device also includes a pressure plate or hook (not shown in the figure), which is welded to the side of the heat insulation nail 3 away from the substrate 2 to press the heat insulation layer 1 against the substrate 2, further reducing the shedding of the heat insulation layer 1.
[0061] Secondly, refer to Figure 4 This application also provides a fixed bed, which includes a furnace body 101 and the heat insulation and sealing device described in any of the above embodiments. The furnace body 101 has an ignition port 102; the heat insulation and sealing device is detachably disposed at the ignition port 102.
[0062] For example, the fixed bed includes a furnace body 101, a support frame 103 supporting the furnace body 101, a feeding port 104 above the furnace body 101, an ash collection structure 105 below the furnace body 101, a pyrolysis gas exhaust port 106, a water seal structure 107, a gas path switching device 108, and a jacket 109 for absorbing heat from the furnace body 101. The curing furnace is used for biomass pyrolysis to produce pyrolysis gas, the main components of which are CO, H2, CO2, methane, etc. The pyrolysis gas is discharged from the pyrolysis gas exhaust port 106, and then flows in the direction indicated by the arrow to the gas path switching device 108. The gas can be selected to flow upward or downward. When flowing downward, it passes through the water seal structure 107, which removes tar from the pyrolysis gas and lowers its temperature. The curing oven has a jacketed structure of 109. Soft water is filled in the jacketed structure. When the curing oven is running, the heat of the oven body 101 is transferred to the water in the jacketed structure 109, thereby heating the water into saturated steam and discharging it.
[0063] The heat insulation layer 1 in this application has good heat insulation performance and can effectively isolate the temperature inside the furnace body 101. When the heat insulation sealing device is placed at the ignition port 102, the cover plate at the ignition port 102 is covered, so that the temperature of the cover plate of the ignition port 102 is lower than 50°C. Since the outer diameter of the heat insulation layer 1 is larger than the outer diameter of the ignition port 102, the heat insulation layer 1 will be compressed, thereby achieving a sealing effect. Since the cover plate is provided with a high-temperature mica gasket, double protection is provided to reduce the risk of leakage. The entire installation and disassembly process is simple and convenient to operate, and the heat insulation layer 1 material is lightweight, which is more conducive to operation.
[0064] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0065] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to interchangeably. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments.
[0066] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.
[0067] Although embodiments of this application have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of this application, and such modifications and variations all fall within the scope defined by the appended claims.
Claims
1. A heat-insulating sealing device for sealing the ignition port (102) of a fixed bed, characterized in that, include: Insulation layer (1); A substrate (2), along the thickness direction (X) of the substrate (2), the substrate (2) has a first side surface (21) and a second side surface (22) disposed opposite to each other; and Insulation nail (3), the insulation nail (3) is provided on the first side (21), the insulation nail (3) passes through the insulation layer (1).
2. The heat insulation and sealing device according to claim 1, characterized in that, The heat insulation layer (1) includes multiple sub-heat insulation layers, which are stacked along the thickness direction (X) of the substrate (2).
3. The heat-insulating sealing device according to claim 1 or 2, characterized in that, Along the thickness direction (X) of the substrate (2), the projection of the substrate (2) falls within the projection of the heat insulation layer (1).
4. The heat-insulating sealing device according to claim 1 or 2, characterized in that, The heat insulation layer (1) includes at least one of rock wool layer, glass fiber layer, aluminum silicate layer, and aerogel composite layer.
5. The heat insulation and sealing device according to claim 1, characterized in that, There are multiple heat-insulating nails (3), which are spaced apart on the first side (21) and extend in a direction away from the second side (22).
6. The heat-insulating sealing device according to claim 5, characterized in that, Along the thickness direction (X) of the substrate (2), the heat-insulating nail (3) has a first end (31) and a second end (32) disposed opposite to each other. The first end (31) is connected to the substrate (2). From the first end (31) to the second end (32), the cross-sectional area of the heat-insulating nail (3) gradually decreases.
7. The heat insulation and sealing device according to claim 1, characterized in that, It also includes a steel strip (4) which surrounds the insulation layer (1).
8. The heat-insulating sealing device according to claim 7, characterized in that, There are multiple steel strips (4), which are arranged sequentially along the thickness direction (X) of the substrate (2).
9. The heat-insulating sealing device according to claim 1, characterized in that, It also includes a handle (5), which is located on the second side (22), and the handles (5) are arranged in pairs.
10. A fixed bed, characterized in that, include: Furnace body (101), wherein the furnace body (101) has an ignition port (102); as well as The heat insulation sealing device according to any one of claims 1 to 9, wherein the heat insulation sealing device is detachably disposed at the ignition port (102).