Reformer, heat-insulating sealing assembly thereof and shell of heat-insulating sealing assembly

Abstract

The utility model discloses a reformer, a heat insulation sealing assembly thereof and a shell of the assembly. The heat insulation sealing assembly comprises a shell body. The shell body is sealed in a furnace hole of a furnace wall in an extending mode, the shell body forms a penetrating-out channel for a furnace tube to penetrate out, the shell body forms an annular filling cavity which surrounds the penetrating-out channel and is filled with heat insulation sealing filler, and a heat insulation gap is formed between the extending-out portion of the shell body and the furnace wall. According to the converter, the heat-insulating sealing assembly thereof and the shell of the heat-insulating sealing assembly, the part, located outside the furnace wall, of the heat-insulating sealing assembly is difficult to lose efficacy.

Description

Technical Field

[0001] The present disclosure relates to the field of reforming furnaces, and in particular to a reforming furnace, a heat insulation sealing assembly thereof, and a shell of the assembly. Background Art

[0002] When the furnace tube of the reformer extends out of the top surface of the furnace wall of the reformer, the connection between the furnace tube and the furnace wall leaks, so a heat insulation sealing device is often provided at the connection between the furnace tube and the furnace wall. However, in the related art, the heat insulation sealing device of the furnace tube is provided above the furnace wall in a manner of directly contacting the top surface of the furnace wall. The heat insulation sealing device is easily deformed and displaced by thermal expansion due to the high temperature of the furnace wall, which makes the function of the heat insulation sealing device easily fail. Summary of the invention

[0003] One advantage of the present disclosure is to provide a reforming furnace, a heat-insulating sealing assembly thereof, and a shell of the assembly, which are conducive to making the portion of the heat-insulating sealing assembly located outside the furnace wall difficult to fail.

[0004] In order to achieve at least one of the above advantages of the present disclosure, the present disclosure provides a shell for thermal insulation and sealing of furnace tubes, comprising: a shell body, which extends out and is sealed in a furnace hole of a furnace wall to form an exit channel for the furnace tube to pass through, and forms an annular filling cavity surrounding the exit channel and for filling with thermal insulation and sealing filler, and a thermal insulation gap is formed between the protruding portion and the furnace wall.

[0005] According to one embodiment of the present disclosure, it also includes: a pressing piece, which is movably arranged in the shell body and is located between the covering part of the furnace tube covering the top of the shell body and the thermal insulation sealing filler; a fastener, which passes through the covering part and abuts against the pressing piece to enable the pressing piece to press the thermal insulation sealing filler.

[0006] According to an embodiment of the present disclosure, the pressing member forms a built-in hole for embedding the furnace tube.

[0007] According to one embodiment of the present disclosure, the shell body includes: a first sleeve, which extends out and seals the furnace hole of the furnace wall to form a first through hole and a first annular space formed around the outer peripheral side of the first through hole; a second sleeve, which forms a second through hole and a second annular space formed around the outer peripheral side of the second through hole; wherein, the second through hole is connected with the first through hole to form the outlet channel, the second annular space is connected with the first annular space to form the annular filling chamber, and the second sleeve is sleeved on the outside of the protruding part of the first sleeve to form the thermal insulation gap between the second sleeve and the furnace wall.

[0008] According to an embodiment of the present disclosure, the first sleeve and the second sleeve are detachably connected.

[0009] According to an embodiment of the present disclosure, the projection of the first annular space is located within the second annular space.

[0010] According to an embodiment of the present disclosure, the first sleeve forms a first connection portion extending in its radial direction, and the second sleeve forms a second connection portion extending in its radial direction and opposite to the first connection portion;

[0011] The shell for heat insulation and sealing of furnace tubes further comprises: a detachable part, which passes through the first connecting part and is detachably connected to the second connecting part.

[0012] According to an embodiment of the present disclosure, it further includes: a sealing member, which is sealed between the first connecting part and the second connecting part.

[0013] The present disclosure also provides a heat insulation sealing assembly, comprising: a shell for heat insulation sealing of a furnace tube as described above; and a heat insulation sealing filler filled in the annular filling cavity.

[0014] The present disclosure also provides a reforming furnace, comprising: a furnace body having a furnace wall; a furnace tube, which passes through the furnace wall and is arranged in the furnace body; and the above-mentioned heat insulation sealing assembly, which is used for heat insulation sealing the furnace tube.

[0015] Beneficial effects:

[0016] (1) The reforming furnace and its heat-insulating sealing assembly and the shell of the assembly disclosed in the present invention are conducive to making the portion of the heat-insulating sealing assembly located outside the furnace wall difficult to fail.

[0017] (2) The reformer and its heat-insulating sealing assembly and the shell of the assembly disclosed in the present invention can ensure the heat-insulating sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of the furnace tube of the embodiment of the present disclosure when it is insulated and sealed by the insulation sealing assembly.

[0019] Figure 2 yes Figure 1 Schematic diagram of the structure of the middle part.

[0020] Figure 3 yes Figure 1 Enlarged schematic diagram of part A.

[0021] 10. Shell body; 101. Exit channel; 1011. First through hole; 1012. Second through hole; 102. Annular filling cavity; 1021. First annular space; 1022. Second annular space; 103. Thermal insulation gap; 11. First sleeve; 111. First connecting portion; 12. Second sleeve; 121. Second connecting portion;

[0022] 20. Clamping piece; 201. Built-in hole;

[0023] 30. Fasteners;

[0024] 40. Detachable parts;

[0025] 50. Seals;

[0026] 800, thermal insulation sealing filler;

[0027] 91. furnace wall; 9101. furnace hole; 92. furnace tube; 921. cover part. DETAILED DESCRIPTION

[0028] The following description is used to disclose the present disclosure so that those skilled in the art can implement the present disclosure. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations. The basic principles of the present disclosure defined in the following description may be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the present disclosure.

[0029] Those skilled in the art should understand that, in the disclosure of the present invention, the orientation or position relationship indicated by the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.

[0030] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0031] In the present disclosure, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 can communicate with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0032] In the related art, when the furnace tube of the converter passes through the top surface of the furnace wall of the converter, a heat-insulating sealing device is provided at the connection between the furnace tube and the furnace wall, so as to ensure that the high-temperature flue gas and heat in the furnace body of the converter are difficult to leak out from the connection between the furnace tube and the furnace wall. And the heat-insulating sealing device is covered on the outside of the furnace tube in an open manner at the bottom and directly adheres to the top surface of the furnace wall. Since the temperature of the top surface of the furnace wall is relatively high, the heat-insulating sealing device adhered to the top surface of the furnace wall is easily deformed and displaced due to thermal expansion, so that the heat-insulating sealing device and the top surface of the furnace wall cannot maintain a tight fit, resulting in a gap between the heat-insulating sealing device and the top surface of the furnace wall that can be connected to the open port below the heat-insulating sealing device. As a result, the heat and high-temperature flue gas in the furnace body are easily conducted out through the gap, resulting in the failure of the heat-insulating sealing function of the heat-insulating sealing device.

[0033] In view of this, the present disclosure provides a shell for thermal insulation and sealing of a furnace tube. When the shell for thermal insulation and sealing of a furnace tube is applied to thermal insulation and sealing of a furnace tube, it is helpful to avoid failure of the thermal insulation and sealing assembly of the furnace tube.

[0034] Figure 1 Schematic diagram of the structure of the furnace tube of the embodiment of the present disclosure when the furnace tube is heat-insulated and sealed by the heat-insulating sealing assembly. Figure 1 The shell for heat insulation and sealing of furnace tubes includes a shell body 10. The shell body 10 extends out of the furnace wall 91 and is sealed in the furnace hole 9101 of the furnace wall 91. Optionally, the shell body 10 is connected to the furnace hole 9101 of the furnace wall 91 by sealing welding, so as to achieve a sealed connection of the shell body 10 in the furnace wall 91. However, it can be understood that the sealed connection method between the shell body 10 and the furnace wall 91 includes but is not limited to this, and can also be other methods.

[0035] Figure 2 yes Figure 1 Schematic diagram of the structure of the middle part. Figure 1 and Figure 2 The shell body 10 forms an outlet channel 101 for the furnace tube 92 to pass through, and an annular filling cavity 102 surrounding the outlet channel 101 and filled with the heat insulating sealing filler 800 is formed in the shell body 10 .

[0036] Therefore, when the furnace pipe 92 passes through the shell body 10 through the exit channel 101, the heat insulating sealing filler 800 in the annular filling cavity 102 will surround the furnace pipe 92 and play a role in sealing and heat insulation, thereby making it difficult for the furnace pipe 92 and the high-temperature flue gas and heat in the furnace body to be transferred to the external environment.

[0037] Optionally, the heat-insulating sealing filler 800 is a ceramic fiber filler. It is understandable that the ceramic fiber filler can be filled in the annular filling cavity 102 in a compacted state. Since the ceramic fibers are compacted, it is difficult for high-temperature flue gas to be conducted out through the compacted ceramic fibers, thereby playing a sealing role. At the same time, since the thermal conductivity of the ceramic fibers is low, it is also difficult for heat to be conducted out through the ceramic fibers, thereby enabling the compacted ceramic fibers to play a dual role of heat insulation and sealing. However, it is understandable that the types of the heat-insulating sealing filler 800 include but are not limited to these, and other fillers with low thermal conductivity and capable of being compacted to form a seal are also within the protection scope of the disclosed embodiments.

[0038] A heat insulating gap 103 is formed between the portion of the shell body 10 extending out of the furnace wall 91 and the furnace wall 91. As a result, the portion of the shell extending out of the furnace wall 91 can maintain a non-contact state with the top surface of the furnace wall 91 and can have a certain distance from the top surface of the furnace wall 91. Therefore, it is difficult for the heat from the top surface of the furnace wall 91 to be transferred to the portion of the shell body 10 extending out of the furnace wall 91 through the heat insulating gap 103, making it difficult for this portion to form a gap due to high temperature displacement and deformation. Therefore, the heat insulating sealing assembly having the above-mentioned shell body 10 and the heat insulating sealing filler 800 is difficult to fail.

[0039] Optionally, see Figure 1 and Figure 2 The shell body 10 includes a first sleeve 11 and a second sleeve 12. The first sleeve 11 extends out of the furnace wall 91 and is sealed in the furnace hole 9101 of the furnace wall 91. The first sleeve 11 forms a first through hole 1011 and a first annular space 1021 formed around the outer circumference of the first through hole 1011. The second sleeve 12 forms a second through hole 1012 and a second annular space 1022 formed around the outer circumference of the second through hole 1012. The second through hole 1012 is connected with the first through hole 1011 to form the outlet channel 101, and the second annular space 1022 is connected with the first annular space 1021 to form the annular filling chamber 102. The second sleeve 12 is sleeved on the outside of the extended portion of the first sleeve 11, and a heat insulation gap 103 is formed between the second sleeve 12 and the furnace wall 91.

[0040] Therefore, the portion of the shell body 10 located outside the furnace wall 91, especially the portion where the second sleeve 12 is located, is not in contact with the top surface of the furnace wall 91 and forms the thermal insulation gap 103. Therefore, the heat from the top surface of the furnace wall 91 is difficult to be transferred to the second sleeve 12, and the second sleeve 12 is also difficult to be deformed and invalidated due to the heat from the top surface of the furnace wall 91. Therefore, the heat and high-temperature flue gas from the furnace body are difficult to be transferred to the external environment.

[0041] Optionally, the projection of the first annular space 1021 is located within the projection of the second annular space 1022. Thus, the size of the first annular space 1021 is smaller than the size of the second annular space 1022. The portion of the shell body 10 away from the top surface of the furnace wall 91, i.e., the portion where the second sleeve 12 is located, can accommodate more heat-insulating sealing fillers 800, i.e., more heat-insulating sealing fillers are unlikely to fail due to the second sleeve 12 deforming to form a gap communicating with the interior, and the heat-insulating sealing effect can be ensured.

[0042] Optionally, the first sleeve 11 and the second sleeve 12 are detachably connected to facilitate disassembly and replacement.

[0043] Figure 3 yes Figure 1 See 1 and Figure 3 The first sleeve 11 forms a first connection portion 111 extending in the radial direction thereof, and the second sleeve 12 forms a second connection portion 121 extending in the radial direction thereof and opposite to the first connection portion 111. The housing for heat insulation and sealing of furnace tubes further comprises a detachable member 40. The detachable member 40 passes through the first connection portion 111 and is detachably connected to the second connection portion 121. Thus, a detachable connection is achieved between the first sleeve 11 and the second sleeve 12.

[0044] Optionally, the first connection portion 111 and the second connection portion 121 are both annularly surrounded outside the first sleeve 11. There are multiple detachable parts 40, and the multiple detachable parts 40 are arranged at intervals around the circumference of the first connection portion 111 and the second connection portion 121 to improve the fixing effect.

[0045] Optionally, the detachable member 40 is provided with threads on the outside, and the detachable member 40 passes through the first connecting portion 111 and is threadedly connected to the second connecting portion 121, thereby achieving a detachable connection.

[0046] In a specific example, the detachable member 40 is configured as a first bolt. The first connecting portion 111 is configured as a first flange welded to the first sleeve 11. The second connecting portion 121 is configured as a second flange welded to the second sleeve 12. A plurality of the first bolts are arranged at intervals around the circumference of the first flange and the second flange to fix the first flange and the second flange together. The manufacturing process of the above parts is mature and the cost is low.

[0047] Optionally, the shell for heat insulation and sealing of furnace tubes further comprises a seal 50. The seal 50 is sealed between the first connection portion 111 and the second connection portion 121. This arrangement can improve the sealing performance of the shell body 10 formed by connecting the first sleeve 11 and the second sleeve 12, making it difficult for high-temperature flue gas and heat to leak from the position where the seal 50 is located.

[0048] Optionally, the sealing member 50 may be a metal spiral wound gasket, which can achieve sealing by elastic or plastic deformation due to the compression of the first connecting portion 111 and the second connecting portion 121, has a mature manufacturing process, low cost, and can avoid sealing failure due to high temperature.

[0049] Optionally, see Figure 1 and Figure 2 The furnace tube 92 is radially outwardly formed with a covering portion 921 surrounding the outer peripheral side of the outlet channel 101, which is used to cover the top of the shell body 10. Specifically, the covering portion 921 is sealed and welded to the furnace tube 92. Thus, the furnace tube 92 can be sealed and connected to the covering portion 921.

[0050] The shell for heat insulation and sealing of furnace tubes further comprises a pressing member 20 and a fastener 30. The pressing member 20 is movably arranged in the shell body 10 and is located between the cover portion 921 and the heat insulation and sealing filler 800. The fastener 30 passes through the cover portion 921 and abuts against the pressing member 20, so that the pressing member 20 presses the heat insulation and sealing filler 800.

[0051] That is to say, after the thermal insulation sealing filler 800 is filled into the annular filling cavity 102 and preliminarily compacted, the fastener 30 drives the clamping member 20 to move toward the bottom wall of the annular filling cavity 102 in the shell body 10, so that the clamping member 20 further compacts the thermal insulation sealing filler 800, which is beneficial to ensure that the thermal insulation sealing filler 800 is fully compacted and the sealing effect of the thermal insulation sealing filler 800 is ensured.

[0052] Optionally, the fastener 30 is formed with threads on the outside, and the fastener 30 passes through the cover portion 921 to abut against the pressing member 20. Specifically, the fastener 30 is a single-head bolt, and the single-head bolt passes through the cover portion 921 to abut against the pressing member 20.

[0053] Therefore, when the thread of the fastener 30 is tightened, the extension length of the fastener 30 from the covering portion 921 will be longer. Then, driven by the fastener 30, the pressing member 20 will move a greater distance toward the bottom wall of the annular filling cavity 102, thereby making the thermal insulation sealing filler 800 more compacted.

[0054] Optionally, the pressing member 20 surrounds the outer peripheral side of the outlet channel 101. Specifically, the pressing member 20 is configured as a pressure ring. Thus, the pressing member 20 does not affect the outlet of the furnace tube 92, and the pressing member 20 can uniformly compact the heat-insulating sealing filler 800 surrounding the furnace tube 92.

[0055] Optionally, the covering portion 921 surrounds the outer circumference of the outlet channel 101. There are multiple fasteners 30, and the multiple fasteners 30 are arranged at intervals around the covering portion 921 and the pressing member 20 to improve the uniform compaction effect.

[0056] Specifically, the fastener 30 is configured as a second bolt. A plurality of the second bolts pass through the covering portion 921 and abut against the pressing member 20 along the circumferential direction of the pressing member 20 to drive the pressing member 20 to compact the heat insulating sealing filler 800.

[0057] See also Figure 1 and Figure 2 The present disclosure also provides a heat insulation sealing assembly, which includes the shell for heat insulation sealing of furnace tubes as described above and the heat insulation sealing filler 800. The heat insulation sealing filler 800 is filled in the annular filling cavity 102. Thus, the heat insulation sealing assembly can seal and insulate the furnace tube 92 when the furnace tube 92 extends out of the furnace wall 91, so that the high-temperature flue gas and heat in the furnace body are difficult to be transferred to the environment outside the furnace wall 91, and it is difficult to fail due to high temperature, and the working reliability is good.

[0058] The present disclosure also provides a reformer, which comprises a furnace body, a furnace tube 92 and the above-mentioned heat insulation sealing assembly. The furnace body has a furnace wall 91. The furnace tube 92 is inserted into the furnace body through the furnace wall 91. The heat insulation sealing assembly is used for heat insulation sealing the furnace tube 92.

[0059] When the converter is in operation, hydrocarbon-containing substances will be fed into the furnace body of the converter, and the furnace tube 92 of the converter will extend into the furnace body through the furnace wall 91 of the furnace body to feed the catalyst into the furnace body. Thus, under the catalysis of the catalyst and the action of high temperature, the hydrocarbon-containing substances will react to generate synthesis gas, for example, hydrogen and water vapor react under the action of the catalyst and high temperature to generate hydrogen and carbon monoxide. However, it can be understood that the gases that can be synthesized by the converter of the present disclosure include but are not limited to these, and this is only a simple example made for the convenience of understanding of those skilled in the art.

[0060] During the operation of the above-mentioned converter, since the above-mentioned thermal insulation sealing assembly is provided at the connection between the furnace tube 92 and the furnace wall 91, the high-temperature gas and heat generated during the operation of the converter are difficult to be conducted to the environment outside the furnace wall 91 through the connection between the furnace tube 92 and the furnace wall 91, thereby ensuring the smooth operation of the converter.

[0061] It should be understood by those skilled in the art that the embodiments of the present disclosure described above and shown in the accompanying drawings are only examples and do not limit the present disclosure. The advantages of the present disclosure have been fully and effectively realized. The functions and structural principles of the present disclosure have been demonstrated and explained in the embodiments, and the embodiments of the present disclosure may be deformed or modified in any way without departing from the principles.

Claims

1. A shell for heat insulation and sealing of furnace tubes, characterized in that: include: The shell body is extended and sealed in the furnace hole of the furnace wall to form an outlet channel for the furnace tube to pass through, and an annular filling cavity surrounding the outlet channel and filled with heat-insulating sealing filler is formed, and a heat-insulating gap is formed between the extended part and the furnace wall.

2. The shell for heat insulation and sealing of furnace tubes according to claim 1, characterized in that: Also includes: A pressing member is movably arranged in the shell body and is located between the covering portion of the furnace tube covering the top of the shell body and the heat-insulating sealing filler; A fastener passes through the covering portion and abuts against the pressing member so that the pressing member presses the heat-insulating sealing filler.

3. The shell for heat insulation and sealing of furnace tubes according to claim 2, characterized in that: The pressing member forms an inner hole for inner placement of the furnace tube.

4. The shell for heat insulation and sealing of furnace tubes according to claim 1, characterized in that: The shell body comprises: A first sleeve extending outwardly and sealing the furnace hole of the furnace wall to form a first through hole and a first annular space formed around the outer circumference of the first through hole; A second sleeve forms a second through hole and a second annular space formed around the outer circumference of the second through hole; wherein the second through hole is connected with the first through hole to form the outlet channel, the second annular space is connected with the first annular space to form the annular filling chamber, and the second sleeve is sleeved on the outside of the protruding part of the first sleeve to form the thermal insulation gap with the furnace wall.

5. The shell for heat insulation and sealing of furnace tubes according to claim 4, characterized in that: The first sleeve and the second sleeve are detachably connected.

6. The shell for heat insulation and sealing of furnace tubes according to claim 4, characterized in that: A projection of the first annular space is located within the second annular space.

7. The shell for heat insulation and sealing of furnace tubes according to claim 4, characterized in that: The first sleeve forms a first connecting portion extending in a radial direction thereof, and the second sleeve forms a second connecting portion extending in a radial direction thereof and opposite to the first connecting portion; The shell for heat insulation and sealing of furnace tubes further comprises: a detachable part, which passes through the first connecting part and is detachably connected to the second connecting part.

8. The shell for heat insulation and sealing of furnace tubes according to claim 7, characterized in that: Also includes: A sealing member is sealed between the first connecting portion and the second connecting portion.

9. A heat-insulating sealing assembly, characterized in that: include: A shell for heat insulating and sealing a furnace tube as claimed in any one of claims 1 to 8; and a heat insulating and sealing filler filled in the annular filling cavity.

10. A reforming furnace, characterized in that include: A furnace body having a furnace wall; A furnace pipe is arranged in the furnace body so as to pass through the furnace wall; The thermal insulation sealing assembly according to claim 9 is used for thermal insulation sealing of the furnace tube.

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