Reaction furnace

Abstract

The utility model discloses a reaction furnace which comprises a furnace body shell, the first heat insulation layer is arranged on the inner circumferential side of the furnace body shell, the first heat insulation layer comprises a heat preservation layer and a hardened layer, and the hardened layer is located on the inner circumferential side of the heat preservation layer; and the heating wire is mounted on the first heat insulation layer. The reaction furnace disclosed by the embodiment of the utility model at least has the advantages of improving the structural strength and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to production equipment technical field especially is related to a reaction furnace. BACKGROUND

[0002] The reaction furnace in the prior art comprises a furnace body inner shell, a first heat insulation layer and a heating wire and the like structure, since the material of the first heat insulation layer is relatively soft, the first heat insulation layer may be deformed due to the inability to support sufficient weight, and at the same time, due to the material, it may be difficult to provide a stable basis to fix the heating wire, resulting in that the heating wire is not firmly installed. SUMMARY

[0003] The utility model discloses at least one of the technical problems in the prior art. To this end, one purpose of the utility model is to provide a reaction furnace, which has at least the advantages of improving structural strength.

[0004] To achieve the above-mentioned purpose, according to the embodiment of the utility model, a reaction furnace is provided, comprising: a furnace body outer shell; a first heat insulation layer, the first heat insulation layer is arranged on the inner circumferential side of the furnace body outer shell, the first heat insulation layer comprises a heat preservation layer and a hardening layer, the hardening layer is located on the inner circumferential side of the heat preservation layer; a heating wire, the heating wire is installed on the first heat insulation layer.

[0005] According to the reaction furnace of the embodiment of the utility model, the heat insulation layer of the first heat insulation layer provides good heat insulation performance, and at the same time, the flexibility and the shock resistance of the structure are also increased. The hardening layer is located on the inner circumferential side of the heat insulation layer, which increases the structural strength of the first heat insulation layer as a whole, effectively resists the pressure and temperature change inside the reaction furnace, and reduces the risk of rupture and heating wire deformation in the reaction furnace. The combination of the heat insulation layer and the hardening layer forms a whole, which improves the structural strength of the reaction furnace, so that it can run stably for a long time in a high-temperature working environment.

[0006] Therefore, according to the heat release reaction furnace of the embodiment of the utility model, at least the advantages of improving structural strength are provided.

[0007] According to some specific embodiments of the utility model, the heat preservation layer is an alumina fiber brick, and the hardening layer is a resin-alumina fiber composite layer.

[0008] According to some specific embodiments of the utility model, the hardening layer is a ceramic layer.

[0009] According to some specific embodiments of the utility model, the thickness of the hardening layer is greater than 2mm.

[0010] According to some specific embodiments of the present application, a plurality of grooves are formed on the side of the first thermal insulation layer facing the hardened layer, the plurality of grooves are arranged along the axial direction of the first thermal insulation layer and spaced along the circumferential direction of the first thermal insulation layer, and the heating wire is embedded in the first thermal insulation layer and exposed from the grooves.

[0011] According to some specific embodiments of the present application, a plurality of grooves are formed on the side of the first thermal insulation layer facing the hardened layer, the plurality of grooves are arranged along the axial direction of the first thermal insulation layer and spaced along the circumferential direction of the first thermal insulation layer, and the heating wire is embedded in the first thermal insulation layer and exposed from the grooves.

[0012] According to some specific embodiments of the present application, the heating wire comprises: an embedded portion in the interior of the first thermal insulation layer; and an exposed portion connected to the radially inner side of the embedded portion and located in the groove; wherein the cross-sectional area of the exposed portion is not less than 65% of the cross-sectional area of the heating wire.

[0013] According to some specific embodiments of the present application, further comprising: a heat radiation reflection layer arranged on the inner circumferential side of the first thermal insulation layer, the thickness of the heat radiation reflection layer is 0.5mm-3mm, and the heat radiation reflection layer reflects the heat infrared rays in the furnace body.

[0014] According to some specific embodiments of the present application, further comprising: a plurality of reinforcing rib plates connected to the inner circumferential surface of the first thermal insulation layer and spaced along the circumferential direction, and the plurality of reinforcing rib plates extend along the axial direction of the reaction furnace.

[0015] According to some specific embodiments of the present application, further comprising: a second thermal insulation layer located between the furnace body shell and the first thermal insulation layer along the radial direction.

[0016] The additional aspects and advantages of the present application will be partially given in the following description, partially will become obvious from the following description, or will be understood by the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0017] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

[0018] Figure 1 is a structural schematic view of a reaction furnace according to an embodiment of the present application;

[0019] Figure 2 is another structural schematic view of a reaction furnace according to an embodiment of the present application;

[0020] Figure 3is a side view of a reaction furnace according to an embodiment of the present application;

[0021] Figure 4 is Figure 3 a partial schematic view;

[0022] Figure 5 is a partial schematic view of a reaction furnace according to an embodiment of the present application.

[0023] Reference Signs:

[0024] reaction furnace 1, furnace body shell 100, first heat insulation layer 200, heating wire 300, heat radiation reflection layer 400,

[0025] reinforcing rib plate 500, second heat insulation layer 600, heat preservation layer 210, hardening layer 220, slot 201, embedded part 310,

[0026] exposed part 320. DETAILED DESCRIPTION

[0027] Embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0028] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0029] In the description of the present application, "first feature" and "second feature" can include one or more features.

[0030] In the description of the present application, the meaning of "multiple" is two or more, and the meaning of "several" is one or more.

[0031] A reaction furnace 1 according to an embodiment of the present application will be described below with reference to the drawings.

[0032] As Figures 1-5As shown, the reaction furnace 1 according to the embodiment of the present application comprises a furnace body shell 100, a first heat insulation layer 200 and a heating wire 300.

[0033] The first heat insulation layer 200 is arranged at the inner circumferential side of the furnace body shell 100, and the first heat insulation layer 200 comprises a heat preservation layer 210 and a hardened layer 220, and the hardened layer 220 is located at the inner circumferential side of the heat preservation layer 210. The heating wire 300 is installed on the first heat insulation layer 200.

[0034] For example, the shape of the reaction furnace 1 is cylindrical, the furnace body shell 100 is a metal piece, the heating wire 300 can be an electric heating wire, and the first heat insulation layer 200 is a loose heat insulation structure. The reaction furnace 1 can accommodate a quartz furnace tube, a process boat and the like to perform a process reaction. Among them, the heat conduction of the reaction furnace 1 mainly has three aspects, the first aspect is that the heat of the heating wire 300 is lost in the heat conduction to the furnace body shell 100, and the first heat insulation layer 200 plays a heat insulation role, thereby playing a heat preservation role. The second aspect is that the heat of the heating wire 300 is radiated to the quartz furnace tube inside, and the third aspect is that the heat of the heating wire 300 is lost in the convection conduction from the furnace door. The first heat insulation layer 200 of the present application has a hardened layer, which optimizes the heat transfer mode of the reaction furnace 1, reduces heat loss, and improves the heating efficiency of the inside of the reaction furnace 1.

[0035] According to the reaction furnace 1 of the embodiment of the present application, the heat insulation layer 210 of the first heat insulation layer 200 provides good heat insulation performance, and also increases the flexibility and shock resistance of the structure. The hardened layer 220 is located at the inner circumferential side of the heat insulation layer 210, which increases the overall structural strength of the first heat insulation layer 200, effectively resists the pressure and temperature changes inside the reaction furnace 1, and reduces the risk of cracking and deformation of the heating wire 300 inside the reaction furnace 1. The combination of the heat insulation layer 210 and the hardened layer 220 forms an integral whole, which improves the structural strength of the reaction furnace 1 and enables it to operate stably for a long time in a high-temperature working environment. At the same time, the heat insulation characteristics of the first heat insulation layer 200 help to reduce heat loss, reduce the temperature outside the reaction furnace 1, improve the safety of the working environment, and also avoid damage to the first heat insulation layer 200 when replacing the internal quartz furnace tube.

[0036] Therefore, according to the heat releasing reaction furnace 1 of the embodiment of the present application, it has the advantages of improving the structural strength, increasing the safety performance and improving the energy utilization rate.

[0037] In some specific embodiments of the present application, for example, Figure 3 and Figure 4As shown, the insulation layer is made of alumina fiber bricks, and the hardening layer 220 is a resin-alumina fiber composite layer. Alumina fiber bricks are a high-performance insulation material with low thermal conductivity, effectively reducing heat conduction and maintaining a high-temperature environment inside reactor 1, thereby improving thermal efficiency and maintaining the stability of the internal temperature of reactor 1. This material can withstand temperatures up to 1600°C, making it ideal for use as the insulation layer of reactor 1 to reduce heat loss. The hardening layer 220 can be a nano-prefabricated polymer composite resin material. Compared to traditional refractory bricks, the alumina fiber brick composite layer is lighter, helping to reduce the overall structural burden of reactor 1, simplifying the installation and maintenance process, and improving the operating efficiency of the equipment.

[0038] In some other specific embodiments of this utility model, the hardened layer 220 is a ceramic layer. The hardened layer 220 can be a ceramic layer with a thickness of 1mm to 5mm. Ceramic materials generally have excellent high-temperature resistance, capable of withstanding the high-temperature environment inside the reactor 1, thereby protecting the internal structure and other components from thermal damage. Ceramic materials also have low thermal conductivity, which can effectively reduce heat loss, improve thermal energy utilization efficiency, and help maintain a stable temperature inside the furnace.

[0039] In some specific embodiments of this utility model, such as Figure 3 and Figure 4 As shown, the thickness of the hardened layer 220 is greater than 2 mm. A thicker hardened layer 220 structure provides higher load-bearing capacity, reducing the risk of material breakage or deformation under high temperature and pressure conditions. For example, compared to a 5 mm thick hardened layer 220, a 2 mm thick hardened layer 220 is more effective at resisting changes in internal and external pressure, reducing damage caused by temperature and pressure fluctuations. Increasing the thickness of the hardened layer 220 also helps improve thermal stability; the thicker material can better resist thermal stress caused by temperature changes, which effectively increases the safety performance of the inner wall of reactor 1 and the heating wire 300 when reactor 1 experiences sudden temperature changes.

[0040] In some specific embodiments of this utility model, such as Figure 2 As shown, the first heat insulation layer 200 has multiple slots 201 on the side facing the hardened layer 220. These slots 201 surround the inner circumferential surface of the first heat insulation layer 200 and are spaced apart along its axial direction. The heating wire 300 is embedded within the first heat insulation layer 200 and protrudes from the slots. The multiple slots 201 are evenly arranged to form a fan-shaped surface, which in turn forms a complete arc on the inner circumferential surface of the first heat insulation layer 200. For example, the first heat insulation layer 200 is directly attached to the heating wire 300, thus forming an integral structure with strong structural integrity.

[0041] Furthermore, such asFigure 1 As shown in the drawings, the side of the first heat insulation layer 200 facing the hardening layer is configured with a plurality of grooves 201, the plurality of grooves 201 extend along the axial direction of the first heat insulation layer 200 and are arranged at intervals along the circumferential direction of the first heat insulation layer 200, and the heating wire 300 is embedded inside the first heat insulation layer 200 and exposed from the grooves 201. Among them, the grooves 201 can extend along the width direction of the first heat insulation layer 200, and the plurality of grooves 201 are arranged side by side in the length direction of the first heat insulation layer 200. For example, the first heat insulation layer 200 can also be directly attached to the heating wire 300, so that the first heat insulation layer 200 and the heating wire 300 form an integrated structure, and the structural integration is strong.

[0042] As can be understood, the heating wire 300 is exposed from the groove 201, which means that the heating wire 300 can be seen from the groove 201, and heat can be directly transmitted from the groove 201 to the inside of the furnace body, and it does not mean that the heating wire 300 protrudes out of the groove 201. Compared with the traditional heating wire completely embedded in the heat insulation material, this way can more quickly transmit heat to the inside of the reaction furnace 1, and shorten the heating time. The grooves 201 are arranged at intervals along the axial direction of the first heat insulation layer 200, so that the heating wire 300 is uniformly distributed inside the first heat insulation layer 200. In this way, the temperature of each area inside the reaction furnace 1 can be more uniform, avoiding the occurrence of local overheating or cold spots, and improving the uniformity and stability of heating.

[0043] In some specific embodiments of the present application, Figure 5 As shown in the drawings, the heating wire 300 includes an embedded part 310 and an exposed part 320. The embedded part 310 is inside the first heat insulation layer 200. The exposed part 320 is connected to the radially inner side of the embedded part 310 and is inside the groove 201. Among them, the cross-sectional area of the exposed part 320 is not less than 65% of the cross-sectional area of the heating wire 300.

[0044] By embedding part of the heating wire 300 inside the first heat insulation layer 200 and exposing another part in the groove 201, the contact area of the heating wire 300 with the internal environment of the reaction furnace 1 is increased. This allows more heat to be transmitted to the inside of the reaction furnace 1 in the form of radiation, thereby improving the heating efficiency. And the cross-sectional area of the exposed part 320 is not less than 65% of the cross-sectional area of the heating wire 300, which ensures that most of the heat can be effectively radiated. This increases the intensity of heat radiation, so that the inside of the reaction furnace 1 can quickly reach a uniform temperature distribution.

[0045] In some specific embodiments of the present application, Figure 3 and Figure 4 As shown in the drawings, the reaction furnace 1 further comprises a heat radiation reflection layer 400. The heat radiation reflection layer 400 is arranged on the inner circumferential side of the first heat insulation layer 200, and the thickness of the heat radiation reflection layer 400 is 0.5mm~3mm, which is used to reflect the heat infrared rays inside the furnace body.

[0046] For example, the thermal radiation reflection layer 400 can be a plating layer or a coating layer with high thermal radiation reflection performance. The thermal radiation reflection layer 400 can effectively reflect the thermal infrared rays inside the furnace 1, reducing the heat loss through the furnace wall and structural materials. This means that the reaction furnace 1 can better maintain the internal temperature, thereby reducing energy consumption and improving overall thermal efficiency. By reflecting the thermal infrared rays inside the furnace 1, the thermal radiation reflection layer 400 helps to form a uniform and persistent high-temperature environment inside the reaction furnace 1, promoting more efficient use of heat for the heating and reaction process of the material, thereby achieving an effect of improving the heat utilization rate by more than 5%.

[0047] When the thickness of the thermal radiation reflection layer 400 is in the range of 0.5mm~3mm, most of the thermal radiation can be effectively reflected, thereby reducing heat loss. For example, if the thickness of the thermal radiation reflection layer 400 is 1mm, it can reflect about 50%~60% of the incident thermal radiation, and if the thickness of the thermal radiation reflection layer 400 is 2mm, it can reflect about 70%~80% of the incident thermal radiation, greatly improving the heat insulation performance of the reaction furnace 1.

[0048] If the thickness of the thermal radiation reflection layer 400 of the reaction furnace 1 is 1.5mm, it can reflect about 65% of the incident thermal radiation while maintaining good structural stability in actual operation.

[0049] In some specific embodiments of the present application, as shown in Figure 3 and Figure 4 The reaction furnace 1 further comprises a plurality of reinforcing rib plates 500. The plurality of reinforcing rib plates 500 are connected to the inner circumferential surface of the first heat insulation layer 200 and are arranged in a circumferential direction. The plurality of reinforcing rib plates 500 extend along the axial direction of the reaction furnace 1. The reinforcing rib plate 500 forms a whole structure by connecting with the first heat insulation layer 200, increases the rigidity and stability of the furnace tube, so that it can withstand the pressure, weight and thermal expansion load in the furnace tube, helps to prevent the furnace tube from being broken or leaking due to deformation at high temperature, improves the reliability and safety of the reaction furnace 1.

[0050] Under high-temperature process conditions, the furnace tube will produce thermal expansion due to temperature changes. The presence of the reinforcing rib plate 500 can effectively disperse and withstand the stress generated by thermal expansion, reducing the deformation and damage of the furnace tube. This is very important to ensure the normal operation of the furnace tube and prolong its service life.

[0051] In some specific embodiments of the present application, as shown in Figure 3 and Figure 4As shown, the reaction furnace 1 also includes a second insulation layer 600. The second insulation layer 600 is located radially between the furnace body shell 100 and the first insulation layer 200. The second insulation layer 600 is aerogel, which is a medium insulation formed by a plurality of small holes. The second insulation layer 600 can significantly reduce heat loss by effectively preventing heat conduction from the inside of the reaction furnace 1 to the external environment. This helps to improve the energy utilization efficiency of the reaction furnace 1, reduce energy consumption, and thus improve the overall operating economy. The second insulation layer 600 has very good insulation effect due to its very small density, which can protect the reaction furnace 1 shell and the surrounding environment from high temperature, and prevent external equipment and personnel from being injured by contacting high-temperature surfaces. This improves the operating safety and avoids potential dangers.

[0052] By reducing heat loss, the second insulation layer helps the reaction furnace maintain stable internal temperature, ensuring the efficiency and consistency of the reaction process. Stable temperature control is crucial for the efficiency of chemical reactions, product quality, and equipment reliability.

[0053] Other configurations and operations according to embodiments of the present application are known to those of ordinary skill in the art and will not be described in detail here.

[0054] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example.

[0055] Although embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, replacements and variations of these embodiments can be made without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A reactor furnace characterized by, The application relates to a furnace body shell, a first heat insulation layer, a heating wire, and a heat radiation reflection layer. The first heat insulation layer is arranged on the inner circumferential side of the furnace body shell, and comprises a heat preservation layer and a hardening layer. The heat preservation layer is an alumina fiber brick, and the hardening layer is a resin-alumina fiber composite layer. The hardening layer is a ceramic layer.

2. The reactor of claim 1, wherein The thickness of the hardening layer is greater than 2 mm.

3. The reactor of claim 1, wherein The side of the first heat insulation layer facing the hardening layer is provided with a plurality of grooves, the grooves are arranged along the axial direction of the first heat insulation layer and are spaced apart along the circumferential direction of the first heat insulation layer, and the heating wire is embedded in the first heat insulation layer and exposed from the grooves.

4. The reactor of claim 1, wherein The side of the first heat insulation layer facing the hardening layer is provided with a plurality of grooves, the grooves are arranged along the axial direction of the first heat insulation layer and are spaced apart along the circumferential direction of the first heat insulation layer, and the heating wire is embedded in the first heat insulation layer and exposed from the grooves.

5. The reactor of claim 1, wherein The heating wire comprises an embedded part and an exposed part.

6. The reactor of claim 1, wherein The exposed part is connected to the radially inner side of the embedded part and is arranged in the groove.

7. The reactor according to claim 5 or 6, characterized in that The cross-sectional area of the exposed part is not less than 65% of the cross-sectional area of the heating wire. The application further relates to a heat radiation reflection layer arranged on the inner circumferential side of the first heat insulation layer, and the thickness of the heat radiation reflection layer is 0.5-3 mm. The application further relates to a plurality of reinforcing rib plates connected to the inner circumferential surface of the first heat insulation layer and arranged along the circumferential direction and extending along the axial direction of the reaction furnace. The application further relates to a second heat insulation layer arranged between the furnace body shell and the first heat insulation layer in the radial direction.

8. The reactor of claim 1, wherein ​ ​ 9. The reactor of claim 1, wherein ​ ​ 10. The reactor of claim 1, wherein ​ ​

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