Industrial furnace and furnace wall plate lining structure thereof

Abstract

The utility model relates to the technical field of thermal equipment, and discloses an industrial furnace and a furnace wall plate lining structure, the furnace wall plate lining structure comprises a furnace wall plate, a lining and a plurality of anchoring nails, the anchoring nails are used for connecting the lining and the furnace wall plate, and the inner surface of the furnace wall plate and the outer surfaces of the anchoring nails are provided with ceramic protective layers. And the ceramic protective layer is formed by spraying a ceramic coating. The inner surface of the furnace wall plate and the outer surface of the anchoring nail are provided with the ceramic protection layers formed through spraying, and compared with dew point corrosion prevention paint needing to be coated for multiple times, the construction amount is effectively reduced, and the construction period is shortened; meanwhile, the ceramic protective layer can form a compact anti-corrosion protective layer on the inner surface of the furnace wall plate and the outer surface of the anchoring nail, the high-temperature stability and the oxidation resistance are good, and the service life of the lining structure can be prolonged.

Description

Technical Field

[0001] This utility model relates to the field of thermal equipment technology, and more specifically, to a furnace wall panel lining structure. Furthermore, this utility model also provides an industrial furnace including the aforementioned furnace wall panel lining structure. Background Technology

[0002] To ensure the normal operation of the heat exchange process within the furnace and to protect the furnace walls and internal structure, industrial furnaces typically have a lining structure. This lining is usually fixed to the inner surface of the furnace walls by anchor bolts. Since the anchor bolts are mostly made of metal and are highly conductive, they usually require the application of an anti-dew-point corrosion coating to protect both the anchor bolts and the furnace walls. This reduces the thermal conductivity of the anchor bolts, thereby minimizing the erosion caused by the high-temperature environment and extending the service life of both the anchor bolts and the lining.

[0003] In existing technologies, to meet insulation requirements, the anti-dew-point corrosion coating on the anchor nails and furnace wall panels needs to be applied 2-3 mm thick. However, due to the viscous nature of the anti-dew-point corrosion coating, multiple applications are often required to achieve the required thickness, resulting in low coating efficiency. Furthermore, the spacing between anchor nails on the furnace wall panels is typically small, further reducing the coating efficiency of the anti-dew-point corrosion coating and easily leading to uneven application, thus affecting the insulation effect of the furnace wall panel lining structure.

[0004] In conclusion, developing a lining structure that is easy to construct and provides good thermal insulation is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide a furnace wall panel lining structure, in which a spray-formed ceramic protective layer is provided on the inner surface of the furnace wall panel and the outer surface of the anchoring nails. This reduces the amount of construction work and shortens the construction period. Furthermore, the ceramic protective layer has good stability and corrosion resistance, which helps to extend the service life of the lining structure.

[0006] In addition, this utility model also provides an industrial furnace including the above-mentioned furnace wall panel lining structure.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A furnace wall panel lining structure includes a furnace wall panel, a lining, and a plurality of anchoring studs. The anchoring studs are used to connect the lining and the furnace wall panel. The inner surface of the furnace wall panel and the outer surface of the anchoring studs are provided with a ceramic protective layer, which is formed by spraying ceramic coating.

[0009] Preferably, the thickness of the ceramic protective layer on the inner surface of the furnace wall panel is the same as the thickness of the ceramic protective layer on the outer surface of the anchor pin.

[0010] Preferably, the ceramic protective layer on the inner surface of the furnace wall panel and the ceramic protective layer on the outer surface of the anchor nail are integrally sprayed and formed.

[0011] Preferably, the ceramic protective layer includes an oxidation furnace ceramic protective layer or a silicon carbide ceramic protective layer.

[0012] Preferably, the anchoring studs are welded vertically to the inner surface of the furnace wall panel, and the anchoring studs are evenly distributed along the extension direction of the lining.

[0013] Preferably, an anchoring connector is pre-embedded in the lining, the anchoring connector has a threaded hole, and the anchoring nail is threadedly connected to the anchoring connector.

[0014] Preferably, the anchoring studs include V-shaped anchoring studs, the lining includes a castable lining, the small end of the V-shaped anchoring studs is connected to the inner surface of the furnace wall plate, and the large end of the V-shaped anchoring studs is inserted into the castable lining.

[0015] Preferably, both oblique insertion portions at the large end of the V-shaped anchor are provided with bent sections, which are used to increase the contact area between the V-shaped anchor and the castable lining.

[0016] Preferably, the two oblique insertion portions of the V-shaped anchor are connected by a horizontal connecting portion, the horizontal connecting portion being parallel to the inner surface of the furnace wall panel, and the bent sections at both ends of the V-shaped anchor being parallel to the inner surface of the furnace wall panel.

[0017] An industrial furnace, comprising the furnace wall panel lining structure described in any of the preceding claims.

[0018] The furnace wall panel lining structure provided by this utility model has a spray-formed ceramic protective layer on the inner surface of the furnace wall panel and the outer surface of the anchor nail. Compared with anti-dew point corrosion coatings that require multiple applications, it effectively reduces the amount of construction work and shortens the construction cycle.

[0019] Meanwhile, the ceramic protective layer can form a dense anti-corrosion protective layer on the inner surface of the furnace wall panel and the outer surface of the anchor nail, and has good high-temperature stability and anti-oxidation performance, which is conducive to extending the service life of the lining structure.

[0020] In addition, this utility model also provides an industrial furnace including the above-mentioned furnace wall panel lining structure. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of a specific embodiment of the furnace wall panel lining structure provided by this utility model.

[0023] Figure 1 middle:

[0024] 1-Furnace wall panel; 2-Anchoring nail; 3-Liner; 4-Ceramic protective layer. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] The core of this utility model is to provide a furnace wall panel lining structure, in which a spray-formed ceramic protective layer is provided on both the inner surface of the furnace wall panel and the outer surface of the anchor nails. This reduces the amount of construction work and shortens the construction period. Furthermore, the ceramic protective layer has good stability and corrosion resistance, which helps to extend the service life of the lining structure.

[0027] In addition, this utility model also provides an industrial furnace including the above-mentioned furnace wall panel lining structure.

[0028] The furnace wall panel lining structure provided by this utility model includes a furnace wall panel 1, a lining 3 and a plurality of anchor nails 2. The anchor nails 2 are used to connect the lining 3 and the furnace wall panel 1. The inner surface of the furnace wall panel 1 and the outer surface of the anchor nails 2 are provided with a ceramic protective layer 4, which is formed by spraying ceramic coating.

[0029] Please refer to Figure 1 One end of the anchor nail 2 is welded to the inner surface of the furnace wall plate 1, and the other end of the anchor nail 2 is connected to the lining 3 by means of plug-in or threaded connection; the ceramic protective layer 4 is provided on the inner surface of the furnace wall plate 1 and the outer surface of the anchor nail 2 to reduce the thermal stress and corrosion of the furnace wall plate 1 and the anchor nail 2 under high temperature and harsh environment, thereby extending the service life of the lining structure.

[0030] The ceramic protective layer 4 is formed by spraying ceramic coatings, such as alumina ceramic coatings, silicon carbide ceramic coatings, composite ceramic coatings, etc. The specific material of the ceramic protective layer 4 can be determined according to actual production needs, such as the design working temperature of the industrial furnace, to ensure that the ceramic protective layer 4 has sufficient thermal insulation and corrosion resistance.

[0031] Taking into account factors such as performance and cost, a ceramic protective layer 4 is usually set, including an alumina ceramic protective layer or a silicon carbide ceramic protective layer.

[0032] The thickness of the ceramic protective layer 4 on the inner surface of the furnace wall panel 1 can be the same as or different from the thickness of the ceramic protective layer 4 on the outer surface of the anchor nail 2. In order to facilitate the spraying and forming of the ceramic protective layer 4, the thickness of the ceramic protective layer 4 on the inner surface of the furnace wall panel 1 is usually set to be the same as the thickness of the ceramic protective layer 4 on the outer surface of the anchor nail 2.

[0033] During assembly, the anchor nails 2 are first fixed to the inner surface of the furnace wall panel 1. Then, the ceramic coating is evenly applied to the inner surface of the furnace wall panel 1 and the outer surface of the anchor nails 2 using a spraying device. The coating is then dried and cured to form a ceramic protective layer 4. Finally, the anchor nails 2 and the lining 3 are connected to complete the lining structure of the industrial furnace.

[0034] Of course, before connecting the anchor nail 2 to the furnace wall panel 1, the inner surface of the furnace wall panel 1 and the outer periphery of the anchor nail 2 can be sprayed to form a ceramic protective layer 4. However, it should be noted that when the anchor nail 2 is connected to the furnace wall panel 1, there is a certain risk of the ceramic protective layer 4 being scratched, which may affect the heat preservation effect of the ceramic protective layer 4. Even if the ceramic protective layer 4 has been sprayed before the anchor nail 2 is connected to the furnace wall panel 1, it still needs to be sprayed again after the connection.

[0035] Preferably, in order to simplify the construction process, the ceramic protective layer 4 on the inner surface of the furnace wall panel 1 and the ceramic protective layer 4 on the outer surface of the anchor nail 2 can be sprayed together, which reduces the amount of construction work and helps to ensure the spraying quality at the connection between the anchor nail 2 and the furnace wall panel 1.

[0036] In this embodiment, the inner surface of the furnace wall panel 1 and the outer surface of the anchor nail 2 are both provided with a spray-formed ceramic protective layer 4, which effectively reduces the amount of construction work and shortens the construction cycle compared to anti-dew point corrosion coatings that require multiple applications.

[0037] Meanwhile, the ceramic protective layer 4 can form a dense anti-corrosion protective layer on the inner surface of the furnace wall panel 1 and the outer surface of the anchor nail 2, and has good high-temperature stability and anti-oxidation performance, which is conducive to extending the service life of the lining structure.

[0038] In addition, the ceramic protective layer 4 has high strength and provides a certain degree of protection for the anchor nail 2. The material grade of the anchor nail 2 can be reduced as appropriate to save costs.

[0039] Based on the above embodiments, the distribution of anchor nails 2 is defined. Anchor nails 2 are vertically welded to the inner surface of furnace wall panel 1, and anchor nails 2 are evenly distributed along the extension direction of lining 3.

[0040] The material and size of the anchor nail 2 can be determined according to the actual production needs, such as the size of the furnace wall panel 1 of the industrial furnace, so that the anchor nail 2 can stably and reliably fix the lining 3 to the inner surface of the furnace wall panel 1.

[0041] The anchor bolts 2 are evenly distributed along the extension direction of the lining 3. The extension direction here includes the circumferential direction and the axial direction of the lining 3. The circumferential spacing and axial spacing of the anchor bolts 2 are determined according to the actual production needs, such as the design connection strength requirements of the lining 3, and will not be elaborated here.

[0042] In this embodiment, the anchor nail 2 is vertically welded to the inner surface of the furnace wall panel 1, which is simple to connect and has high connection strength. It does not damage the surface structure of the furnace wall panel 1, which is beneficial to extending the service life of the furnace wall panel 1 and improving the thermal insulation performance of the lining structure.

[0043] Based on the above embodiments, the structure of the lining 3 is defined by the connection method between the anchor nail 2 and the lining 3. The lining 3 mainly includes castable linings cast on site and precast linings.

[0044] When the lining 3 is a pre-formed lining 3, an anchoring connector is embedded in the lining 3. The anchoring connector is provided with a threaded hole, and the anchoring nail 2 is threadedly connected to the anchoring connector. Alternatively, the anchoring connector is provided with a pin hole, and the anchoring nail 2 is pin-connected to the anchoring connector. In this way, the anchoring nail 2 and the lining 3 are connected, and the lining 3 is fixed to the inner surface of the furnace wall panel 1 by the anchoring nail 2.

[0045] At this time, the shape of the anchor pin 2 is not complicated, and it is usually set as a regular fastening screw.

[0046] When the lining 3 is a castable lining, the shape of the anchor 2 has little impact on the connection difficulty between the anchor 2 and the lining 3. The small end of the V-shaped anchor can be connected to the inner surface of the furnace wall plate 1, and the large end of the V-shaped anchor can be inserted into the castable lining. In order to increase the contact area between the V-shaped anchor and the lining 3 through the inclined insertion part of the V-shaped anchor relative to the inner surface of the furnace wall plate 1, the connection stability and reliability of the anchor 2 and the lining 3 are enhanced.

[0047] The length of the V-shaped anchor insert into the lining of the cast-in-place material, as well as the angle of the V-shaped opening of the V-shaped anchor, can be determined according to actual production needs, such as the thickness of the lining 3, and will not be elaborated here.

[0048] Preferably, both oblique insertion portions of the V-shaped anchor pin are provided with bent sections. The bent sections are used to increase the contact area between the V-shaped anchor pin and the castable lining, so as to further enhance the connection stability between the anchor pin 2 and the lining 3, thereby fixing the lining 3 more stably and reliably to the inner surface of the furnace wall plate 1.

[0049] The angle between the aforementioned bent section and the oblique insertion part of the V-shaped anchor is not limited, but it is preferable to set the bent sections at both ends of the V-shaped anchor to be parallel to the inner surface of the furnace wall plate 1.

[0050] In addition, to facilitate the welding connection between the V-shaped anchor and the inner surface of the furnace wall panel 1, the oblique insertion parts at both ends of the V-shaped anchor are usually connected by a horizontal connecting part. The horizontal connecting part is parallel to the inner surface of the furnace wall panel 1, so as to ensure the contact area between the V-shaped anchor and the inner surface of the furnace wall panel 1. This not only facilitates the welding connection between the V-shaped anchor and the furnace wall panel 1, but also ensures the welding quality between the V-shaped anchor and the furnace wall panel 1.

[0051] In addition to the furnace wall panel lining structure described above, this utility model also provides an industrial furnace including the furnace wall panel lining structure disclosed in the above embodiments. For the structure of other parts of the industrial furnace, please refer to the prior art, which will not be repeated here.

[0052] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0053] The industrial furnace and furnace wall lining structure provided by this utility model have been described in detail above. Specific examples have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A furnace wall panel lining structure, comprising a furnace wall panel (1), a lining (3), and a plurality of anchor bolts (2), wherein the anchor bolts (2) are used to connect the lining (3) and the furnace wall panel (1), characterized in that, The inner surface of the furnace wall panel (1) and the outer surface of the anchor nail (2) are both provided with a ceramic protective layer (4), which is formed by spraying ceramic coating.

2. The furnace wall panel lining structure according to claim 1, characterized in that, The thickness of the ceramic protective layer (4) on the inner surface of the furnace wall panel (1) is the same as the thickness of the ceramic protective layer (4) on the outer surface of the anchor nail (2).

3. The furnace wall panel lining structure according to claim 2, characterized in that, The ceramic protective layer (4) on the inner surface of the furnace wall panel (1) and the ceramic protective layer (4) on the outer surface of the anchor nail (2) are integrally sprayed and formed.

4. The furnace wall panel lining structure according to any one of claims 1-3, characterized in that, The ceramic protective layer (4) includes an oxidation furnace ceramic protective layer or a silicon carbide ceramic protective layer.

5. The furnace wall panel lining structure according to any one of claims 1-3, characterized in that, The anchoring nails (2) are vertically welded to the inner surface of the furnace wall plate (1), and the anchoring nails (2) are evenly distributed along the extension direction of the lining (3).

6. The furnace wall panel lining structure according to claim 5, characterized in that, An anchoring connector is pre-embedded in the lining (3), the anchoring connector is provided with a threaded hole, and the anchoring nail (2) is threadedly connected to the anchoring connector.

7. The furnace wall panel lining structure according to claim 6, characterized in that, The anchor (2) includes a V-shaped anchor, the lining (3) includes a castable lining, the small end of the V-shaped anchor is connected to the inner surface of the furnace wall plate (1), and the large end of the V-shaped anchor is inserted into the castable lining.

8. The furnace wall panel lining structure according to claim 7, characterized in that, Both of the two oblique insertion portions at the large end of the V-shaped anchor are provided with bent sections, which are used to increase the contact area between the V-shaped anchor and the cast lining.

9. The furnace wall panel lining structure according to claim 8, characterized in that, The two oblique insertion portions of the V-shaped anchor are connected by a horizontal connecting portion, which is parallel to the inner surface of the furnace wall panel (1), and the bent sections at both ends of the V-shaped anchor are parallel to the inner surface of the furnace wall panel (1).

10. An industrial furnace, characterized in that, Includes the furnace wall panel lining structure as described in any one of claims 1-9.

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