High-thermal-conductivity composite refractory brick assembly for hydrogen reformer lining

Abstract

The utility model discloses a high heat conduction composite refractory brick assembly for hydrogen production reformer lining relates to refractory material technical field. The utility model discloses a refractory brick, the high heat conduction mechanism is provided in the refractory brick, the refractory brick both sides all are provided with the mounting mechanism, the high heat conduction mechanism includes the hollow slot of setting in the refractory brick inside, the support plate of fixed connection in the hollow slot inside and the high heat conduction pipe of fixed connection in the hollow slot inside, the mounting mechanism includes the spacing rod of setting in the refractory brick one side. The utility model discloses through spiral high heat conduction pipe design, significantly prolongs the heat flow path and increases the contact area with the refractory brick base body, cooperates the high heat conduction characteristic of copper base composite material, realizes the heat rapid, even transmission to the reaction tube area, and this structure solves the problem of low efficiency of traditional linear heat conduction groove thoroughly, effectively eliminates the circumferential temperature difference of furnace tube, guarantees the catalytic reaction uniformity, and greatly improves the methane conversion efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of refractory material technology, and in particular relates to a high thermal conductivity composite refractory brick assembly for the lining of a hydrogen production converter. Background Technology

[0002] The hydrogen reformer is the core equipment for producing hydrogen through hydrocarbon steam reforming. Its function is to react hydrocarbons such as methane with water vapor to produce hydrogen and CO under high temperature and catalyst conditions. The furnace body is usually composed of a high-temperature resistant lining, a combustion system, and a reaction tube assembly. The role of refractory bricks is to quickly transfer heat from the combustion zone to the reaction tubes and improve temperature uniformity.

[0003] Traditional refractory bricks typically employ straight-line heat conduction grooves or homogeneous composite material designs. This structure presents a significant bottleneck in heat conduction efficiency. The heat flow path of straight-line heat conduction grooves is relatively short, and the contact area with the brick substrate is limited, resulting in the inability to transfer heat quickly and evenly. At the same time, the isotropic thermal conductivity of homogeneous composite materials is difficult to meet the complex heat flow distribution requirements within the conversion furnace. These problems collectively lead to a significant circumferential temperature difference in the furnace tubes, severely affecting the uniformity of the catalytic reaction and thus reducing methane conversion efficiency.

[0004] To address these issues, we provide high thermal conductivity composite refractory brick assemblies for hydrogen production converter linings. Utility Model Content

[0005] The purpose of this invention is to provide a high thermal conductivity composite refractory brick assembly for hydrogen production converter lining. Through the cooperation of the high thermal conductivity mechanism and the installation mechanism, it solves the problem that existing refractory bricks have a bottleneck in heat conduction efficiency, a short heat flow path in the straight heat conduction groove, and a limited contact area with the brick substrate, which leads to the inability to transfer heat quickly and evenly.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution.

[0007] This utility model relates to a high thermal conductivity composite refractory brick assembly for the lining of a hydrogen production converter, comprising a refractory brick, wherein a high thermal conductivity mechanism is provided inside the refractory brick, and an installation mechanism is provided on both sides of the refractory brick. The high thermal conductivity mechanism includes a hollow groove formed inside the refractory brick, a support plate fixedly connected inside the hollow groove, and a high thermal conductivity pipe fixedly connected inside the hollow groove. The installation mechanism includes a limiting rod provided on one side of the refractory brick, an assembly plate sleeved on the surface of the limiting rod, and a limiting block fixedly connected to one side of the assembly plate.

[0008] The present invention is further configured such that two support plates are fixedly connected to the inside of the hollow groove, and the two support plates are respectively fixedly connected to the top and bottom of the hollow groove cavity.

[0009] The present invention is further configured such that the support plate is composed of multiple hexagonal plates fixedly connected to each other, and the material of the support plate is mullite brick.

[0010] The present invention is further configured such that the high thermal conductivity pipe is spiral in shape and is disposed between the upper and lower support plates.

[0011] The present invention is further configured such that the high thermal conductivity pipe is hollow and the interior of the high thermal conductivity pipe is filled with a copper-based composite material.

[0012] The present invention is further configured such that limiting grooves adapted to the limiting rod are provided on both sides of the refractory brick, and assembly grooves adapted to the assembly plate are provided on both sides of the top and bottom of the refractory brick.

[0013] The present invention is further configured such that the top and bottom of the refractory brick are provided with limiting slots adapted to the limiting blocks, and the limiting blocks are fixedly connected to the top and bottom sides of the assembly plate in groups of four.

[0014] The present invention has the following beneficial effects.

[0015] 1. This utility model, through the design of a spiral high thermal conductivity tube, significantly extends the heat flow path and increases the contact area with the refractory brick matrix. Combined with the high thermal conductivity of copper-based composite materials, it enables rapid and uniform heat transfer to the reaction tube area. This structure completely solves the problem of low efficiency of traditional straight heat conduction grooves, effectively eliminates the circumferential temperature difference of the furnace tube, ensures the uniformity of the catalytic reaction, and greatly improves the methane conversion efficiency.

[0016] 2. This utility model uses a hexagonal honeycomb support plate made of mullite, which has excellent resistance to hydrogen permeation and thermal shock stability in high-temperature environments, providing double protection for high thermal conductivity pipes. Combined with the three-dimensional positioning structure of the installation mechanism, it achieves precise refractory brick laying and thermal expansion stress buffering, significantly enhancing the integrity of the lining and extending the service life of the equipment.

[0017] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0019] Figure 1 A three-dimensional view of a high thermal conductivity composite refractory brick assembly used for the lining of a hydrogen production converter.

[0020] Figure 2This is a front view of the refractory bricks in a high thermal conductivity composite refractory brick assembly used for lining a hydrogen production converter.

[0021] Figure 3 This is a structural diagram of the mounting mechanism in a high thermal conductivity composite refractory brick assembly for hydrogen production converter lining.

[0022] Figure 4 A top sectional view of the refractory bricks in a high thermal conductivity composite refractory brick assembly for hydrogen production converter lining.

[0023] In the attached diagram: 1. Refractory brick; 2. High thermal conductivity mechanism; 201. Hollow groove; 202. Support plate; 203. High thermal conductivity pipe; 3. Installation mechanism; 301. Limiting rod; 302. Assembly plate; 303. Limiting block; 4. Limiting groove; 5. Assembly groove; 6. Limiting slot. Detailed Implementation

[0024] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Example 1

[0026] Please see Figures 1-4 This utility model is a high thermal conductivity composite refractory brick assembly for the lining of a hydrogen production converter, including a refractory brick 1, a high thermal conductivity mechanism 2 inside the refractory brick 1, and an installation mechanism 3 on both sides of the refractory brick 1. The high thermal conductivity mechanism 2 includes a hollow groove 201 opened inside the refractory brick 1, a support plate 202 fixedly connected inside the hollow groove 201, and a high thermal conductivity pipe 203 fixedly connected inside the hollow groove 201. The installation mechanism 3 includes a limiting rod 301 set on one side of the refractory brick 1, an assembly plate 302 sleeved on the surface of the limiting rod 301, and a limiting block 303 fixedly connected to one side of the assembly plate 302.

[0027] Specifically: By setting up the high thermal conductivity mechanism 2, heat transfer efficiency is improved and thermal stability is ensured. The spiral high thermal conductivity pipe 203 accelerates the transfer of heat from the furnace to the reaction tube by extending the heat flow path and increasing the contact area with the refractory brick 1, solving the problem of low efficiency of traditional straight heat conduction grooves. The high thermal conductivity pipe 203 is filled with copper-based material, which significantly improves the thermal conductivity and achieves rapid heat uniformity. By setting up the installation mechanism 3, precise positioning and stable masonry are achieved. The limiting rod 301 and the limiting groove 4 cooperate to control the left and right position of the refractory brick 1 to prevent horizontal deviation. The assembly plate 302 and the assembly groove 5 cooperate to fit the adjacent bricks at the top / bottom to ensure vertical alignment. The limiting block 303 cooperates with the limiting slot 6. The four limiting blocks 303 are inserted into the slot to form a three-dimensional lock to prevent the bricks from shifting under thermal expansion. The high thermal conductivity mechanism 2 directly optimizes the heat conduction efficiency, while the installation mechanism 3 ensures the long-term stability of the lining, jointly solving the problems of "large circumferential temperature difference" and "thermal shock cracking" of traditional refractory brick 1.

[0028] Example 2

[0029] Please see Figures 1-4 Based on Embodiment 1, two support plates 202 are fixedly connected inside the hollow groove 201 in groups of two. The two support plates 202 are fixedly connected to the top and bottom of the inner cavity of the hollow groove 201, respectively. The support plates 202 are composed of multiple hexagonal plates fixedly connected to each other. The material of the support plates 202 is mullite brick. The high thermal conductivity pipe 203 is spiral in shape and is set between the upper and lower support plates 202. The high thermal conductivity pipe 203 is hollow and filled with copper-based composite material. The refractory brick 1 has limiting grooves 4 on both sides that are compatible with the limiting rod 301. The top and bottom sides of the refractory brick 1 have assembly grooves 5 that are compatible with the assembly plate 302. The top and bottom sides of the refractory brick 1 have limiting slots 6 that are compatible with the limiting block 303. The four limiting blocks 303 are fixedly connected to the top and bottom sides of the assembly plate 302 in groups of four.

[0030] Specifically: By setting two support plates 202, a support and protective layer is formed at the top and bottom of the hollow groove 201 to protect the internal high thermal conductivity pipe 203. The support plates 202 are formed by fixing hexagonal plates together. The hexagonal honeycomb support plates 202 suppress crack propagation by dispersing stress. Their low porosity blocks the hydrogen permeation path and can improve the thermal shock resistance and stability of the support plates 202. The mullite brick material support plates 202 have excellent hydrogen permeation resistance and strong stability in high temperature environments. The spiral high thermal conductivity pipe 203 has a longer spiral path and a larger contact area with the refractory brick 1, which can more effectively conduct heat. The filling of copper-based composite material can improve thermal conductivity. The limiting groove 4 limits the left and right position of the refractory brick 1 when installing it to prevent the refractory brick 1 from shifting left and right. The limiting slot 6, in conjunction with the assembly groove 5, limits the top and bottom refractory bricks 1.

[0031] The working principle of this utility model is as follows: The limiting rod 301 is fixed on the furnace body base of the hydrogen production converter as a vertical reference. The first layer of refractory bricks 1 is lowered along the limiting rod 301, so that the limiting rod 301 is embedded in the limiting groove 4 on the side of the brick body to constrain horizontal displacement. A high-temperature adhesive is applied to the surface of the first layer of refractory bricks 1. The assembly plate 302 is fitted into the limiting rod 301, and the limiting block 303 at its bottom is inserted into the limiting slot 6 at the top of the first layer of bricks to form a bottom lock. The second layer of refractory bricks 1 is laid, so that the limiting block 303 at the top of the lower layer assembly plate 302 is embedded into the limiting slot 6 at the bottom of the refractory brick 1 of this layer. At the same time, the assembly groove 5 on the side of this layer of bricks engages with the side of the assembly plate 302 to complete the vertical positioning. The above operation is repeated to build layer by layer, and finally an inner lining structure is formed by the limiting rod 301 running through the whole, the assembly plates 302 being connected in layers, and the limiting blocks 303 locking in a three-dimensional manner to resist thermal expansion stress.

[0032] Heat from the furnace is transferred to the spiral high thermal conductivity pipe 203 through the refractory brick 1 matrix. Its long path design increases the heat exchange area. The copper-based composite material inside the high thermal conductivity pipe 203 quickly absorbs heat and conducts it along the spiral tube axis to the reaction tube area, reducing the circumferential temperature difference. The top / bottom double-layer mullite support plate 202 forms a protective layer. The hexagonal honeycomb structure disperses thermal stress and prevents the high thermal conductivity pipe 203 from deforming. The mullite material blocks the penetration of high-temperature hydrogen gas and avoids the brick embrittlement. The limiting groove 4 and limiting slot 6 of the installation mechanism 3 allow micron-level thermal expansion displacement to prevent the lining from cracking. The layered design of the assembly plate 302 absorbs longitudinal expansion stress and maintains overall sealing.

[0033] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A high thermal conductivity composite refractory brick assembly for the lining of a hydrogen production converter, comprising refractory bricks (1), characterized in that: The refractory brick (1) is provided with a high thermal conductivity mechanism (2) inside, and the refractory brick (1) is provided with an installation mechanism (3) on both sides; The high thermal conductivity mechanism (2) includes a hollow groove (201) opened inside the refractory brick (1), a support plate (202) fixedly connected inside the hollow groove (201), and a high thermal conductivity pipe (203) fixedly connected inside the hollow groove (201). The installation mechanism (3) includes a limiting rod (301) disposed on one side of the refractory brick (1), an assembly plate (302) sleeved on the surface of the limiting rod (301), and a limiting block (303) fixedly connected to one side of the assembly plate (302).

2. The high thermal conductivity composite refractory brick assembly for the lining of a hydrogen production converter according to claim 1, characterized in that: The two support plates (202) are fixedly connected inside the hollow groove (201) in a group of two, and the two support plates (202) are respectively fixedly connected to the top and bottom of the inner cavity of the hollow groove (201).

3. The high thermal conductivity composite refractory brick assembly for the lining of a hydrogen production converter according to claim 1, characterized in that: The support plate (202) is composed of multiple hexagonal plates that are fixedly connected to each other, and the material of the support plate (202) is mullite brick.

4. The high thermal conductivity composite refractory brick assembly for hydrogen production converter lining according to claim 1, characterized in that: The high thermal conductivity pipe (203) is spiral in shape and is disposed between the upper and lower support plates (202).

5. The high thermal conductivity composite refractory brick assembly for the lining of a hydrogen production converter according to claim 1, characterized in that: The high thermal conductivity pipe (203) is hollow and is filled with copper-based composite material.

6. The high thermal conductivity composite refractory brick assembly for the lining of a hydrogen production converter according to claim 1, characterized in that: The refractory brick (1) has a limiting groove (4) on both sides that is compatible with the limiting rod (301), and the refractory brick (1) has an assembly groove (5) on both sides of the top and bottom that is compatible with the assembly plate (302).

7. The high thermal conductivity composite refractory brick assembly for hydrogen production converter lining according to claim 1, characterized in that: The refractory brick (1) has a limiting slot (6) at the top and bottom that is compatible with the limiting block (303). The limiting blocks (303) are fixedly connected to the top and bottom sides of the assembly plate (302) in groups of four.

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