Double-sided radiant heat carrier furnace

Abstract

The utility model relates to the technical field of heat carrier furnaces, and provides a double-sided radiant heat carrier furnace, which comprises a furnace body, burners and at least one furnace tube group, the furnace tube group is sheet-shaped, is perpendicular to the bottom surface of the furnace body and is arranged inside the furnace body, the burners are arranged on two sides of the furnace tube group in the direction of the positive vertical line of the furnace tube group, and the burners are arranged on the furnace tube group. The burner is used for burning to generate flue gas which is used for heating the furnace tube group. The heat carrier furnace solves the problem that an existing heat carrier furnace is not uniform in heat exchange, a plurality of furnace tube sets are arranged according to needs in the actual use process, operation hidden dangers caused by the fact that a plurality of devices are adopted are avoided, large-scale heat carrier furnace is achieved, and the heat carrier furnace is modularized through the plurality of furnace tube sets.

Description

Technical Field

[0001] The utility model relates to the technical field of heat carrier furnaces, in particular to a double-sided radiation heat carrier furnace. Background Art

[0002] Food, chemical, oil, textile, building materials, petroleum and other industries need to use intermediate heat carriers to heat materials to a certain temperature, conduct chemical reactions or enter subsequent process flows. The general heat carrier furnace is a cylindrical furnace with double or multi-layer closely packed spiral tube structure, which absorbs heat by radiation heat exchange between high-temperature flue gas and furnace tubes. The flue gas after radiation heat exchange enters the convection section, and conducts convection heat exchange with the furnace tube group in the convection section. After the temperature is reduced, it is discharged from the heating furnace. The gas in the tube group is heated and then led to the production process. The heat carrier furnace of this furnace structure has the advantages of simple structure and easy transportation, and is currently widely used in heat carrier furnaces in various industries.

[0003] However, with the scale and large-scale development of various industries, this type of furnace has gradually revealed its disadvantages. Due to the spiral tube structure of the cylindrical furnace, there is a limit on the maximum cross-sectional size of the transportation. After large-scale production, the length can only be increased, and the heat exchange in the furnace is uneven; a single unit has size limitations, and multiple units will greatly increase the user's operations and increase the risk of misoperation; the system of multiple units is complex, and the operations of each unit affect each other, which can easily cause unstable load.

[0004] In addition, due to the densely packed spiral tube structure, it is not friendly to maintenance operations and there is not enough space for furnace tube maintenance. Once the furnace tube is damaged, the heat carrier furnace body must be destroyed to repair the furnace tube. Utility Model Content

[0005] The utility model aims to solve at least one of the technical problems existing in the related art. To this end, the utility model provides a double-sided radiation heat carrier furnace to improve the heat exchange uniformity of the heat carrier furnace.

[0006] The utility model provides a double-sided radiation heat carrier furnace, which comprises: a furnace body, burners arranged in the furnace body, and at least one furnace tube group, wherein the furnace tube group is in a sheet shape and is perpendicular to the bottom surface of the furnace body; along the perpendicular direction of the furnace tube group, burners are arranged on both sides of the furnace tube group, the burners are used for burning to generate flue gas, and the flue gas is used for heating the furnace tube group.

[0007] According to a double-sided radiation heat carrier furnace provided by the utility model, the burner is arranged at the bottom of the furnace body, and a smoke outlet is arranged at the top of the furnace body, and the smoke outlet is used to discharge the smoke after heating the furnace tube group out of the furnace body. According to a double-sided radiation heat carrier furnace provided by the utility model, the double-sided radiation heat carrier furnace also includes a hanging support structure, which is installed on the top of the furnace body and fixedly connected to the furnace tube group.

[0008] According to a double-sided radiation heat carrier furnace provided by the utility model, the double-sided radiation heat carrier furnace also includes: an inlet header, an inlet distribution pipe, an outlet header and an outlet distribution pipe, the inlet distribution pipe connects the furnace tube group and the inlet header, and the outlet distribution pipe connects the furnace tube group and the outlet header.

[0009] According to a double-sided radiation heat carrier furnace provided by the utility model, a plurality of furnace tube groups are arranged in the furnace body, and each of the furnace tube groups corresponds to one inlet distribution pipe and one outlet distribution pipe.

[0010] According to a double-sided radiation heat carrier furnace provided by the utility model, the double-sided radiation heat carrier furnace also includes an outer shell, which covers the outer side of the furnace body, and the outer shell is fitted with the furnace body to fix the furnace body.

[0011] According to a double-sided radiation heat carrier furnace provided by the utility model, the double-sided radiation heat carrier furnace also includes a heat preservation structure, and heat preservation material is coated on the inner wall of the furnace body and / or on the outer wall of the furnace body.

[0012] The above one or more technical solutions in the embodiments of the utility model have at least one of the following technical effects:

[0013] The double-sided radiation heat carrier furnace provided by the utility model can make the double-sided radiation heating of the furnace tube group uniform by arranging at least one sheet furnace tube group and burners on both sides of the furnace tube group, thereby solving the problem of uneven heat exchange of the current heat carrier furnace. In actual use, multiple furnace tube groups are arranged as needed, avoiding the operation hidden dangers caused by using multiple equipment, thereby realizing the large-scale heat carrier furnace, and multiple furnace tube groups modularize the heat carrier furnace.

[0014] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a cross-sectional view of the double-sided radiation heat carrier furnace provided by the utility model.

[0017] Figure 2It is a partial enlarged view of the hanging support structure of the double-sided radiation heat carrier furnace provided by the utility model.

[0018] Figure 3 It is an enlarged view of the inlet header of the double-sided radiation heat carrier furnace provided by the utility model.

[0019] Figure 4 It is an enlarged view of the outlet header of the double-sided radiation heat carrier furnace provided by the utility model.

[0020] Reference numerals:

[0021] 1. Furnace body; 2. Burner; 3. Furnace tube group; 4. Suspension support structure; 5. Inlet header; 6. Inlet distribution pipe; 7. Outlet header; 8. Outlet distribution pipe; 9. Outer shell; 10. Insulation structure. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution in the utility model will be described clearly and completely below. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. The following embodiments are used to illustrate the utility model, but cannot be used to limit the scope of the utility model.

[0023] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0024] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" 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 or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0025] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. 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 utility model embodiment. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0026] In the related art, the spiral tube structure of the cylindrical furnace is limited by the maximum cross-sectional size for transportation. After large-scale production, the length can only be increased, and the heat exchange in the furnace is uneven. In order to solve this problem, burners are set on both sides of the sheet furnace tube group, so that the furnace tube group can be evenly heated by double-sided radiation. Multiple furnace tube groups are set, and material distribution is carried out through the inlet manifold, so that the material in each furnace tube group is stably distributed, so that the scale of the heat carrier furnace is not limited by the maximum cross-sectional size for transportation, and finally the large-scale heat carrier furnace is realized, stable operation, energy saving and high efficiency.

[0027] Figure 1 It is a cross-sectional view of the double-sided radiation heat carrier furnace provided by the utility model. Figure 2 It is a partial enlarged view of the hanging support structure of the double-sided radiation heat carrier furnace provided by the utility model.

[0028] The utility model provides a double-sided radiation heat carrier furnace, such as Figure 1-Figure 2 As shown, the double-sided radiation heat carrier furnace includes: a furnace body 1 and burners 2 all arranged in the furnace body 1 and at least one furnace tube group 3, the furnace tube group 3 is in a sheet shape, the furnace tube group 3 is perpendicular to the bottom surface of the furnace body 1, and burners 2 are arranged on both sides of the furnace tube group 3 along the perpendicular line direction of the furnace tube group 3, the burners 2 are used for burning to generate flue gas, and the flue gas is used to heat the furnace tube group 3.

[0029] In this embodiment, by providing at least one sheet-like furnace tube group 3 and burners 2 on both sides of the furnace tube group 3, the furnace tube group 3 can be evenly heated by double-sided radiation, which solves the problem of uneven heat exchange in the current heat carrier furnace. In actual use, multiple furnace tube groups 3 are set as needed to avoid operational hazards caused by using multiple devices, thereby realizing the large-scale heat carrier furnace. Multiple furnace tube groups 3 modularize the heat carrier furnace.

[0030] According to some embodiments of the present invention, the furnace body 1 is used to store the flue gas released by the burner 2, the furnace tube group 3 is located inside the furnace body 1, and the material inside the furnace tube group 3 is heated by the flue gas.

[0031] According to some embodiments of the utility model, burners 2 are arranged on both sides of the furnace tube group 3. Compared with single-sided radiation, double-sided radiation is more uniform and has high heat exchange efficiency. Under the same load, the furnace tube group 3 has a longer service life, a larger furnace combustion area, and the flue gas does not flow through the furnace tube group 3, which will not cause local overheating of the furnace tube. The furnace space is large, which is convenient for inspection and maintenance of the furnace tube group 3.

[0032] According to some embodiments of the utility model, burners 2 are provided on both sides of the furnace tube group 3, multiple furnace tube groups 3 are arranged in the furnace body 1, and the adjacent sides of two adjacent furnace tube groups 3 share one burner 2 to save space and energy.

[0033] According to some embodiments of the utility model, the sheet-shaped furnace tube group 3 is heated more evenly than the spiral furnace tube group 3, which facilitates large-scale implementation. A plurality of furnace tube groups 3 can be arranged in the furnace body 1 according to actual needs, which is not limited by the transportation size, avoids errors caused by multiple operations, and has stable operation. In addition, large-scale equipment is used for heating to reduce heat loss, make full use of energy, and save energy and be efficient.

[0034] According to some preferred embodiments of the present invention, in order to increase the heating time of the material, the furnace tube group 3 is formed by connecting multiple groups of U-shaped tubes.

[0035] According to the double-sided radiation heat carrier furnace provided by the utility model, Figure 1 As shown, the burner 2 is arranged at the bottom of the furnace body 1 , and a smoke outlet is provided on the top of the furnace body 1 , and the smoke outlet is used to discharge the smoke after heating the furnace tube group 3 out of the furnace body 1 .

[0036] In this embodiment, the burner 2 is arranged at the bottom of the furnace body 1, and the smoke outlet of the furnace body 1 is arranged at the top of the furnace body 1. After the smoke generated in the burner 2 rises, the smoke performs radiation heat exchange on the furnace tube group 3 on both sides of the furnace tube group 3. The smoke passes through the interior of the furnace body 1 and flows out directly at the smoke outlet of the furnace body 1. The smoke does not flow freely between the furnace tube groups 3, but flows in a direction parallel to the furnace tube group 3 to avoid local overheating of the furnace tube group 3.

[0037] According to some other embodiments of the utility model, the burner 2 is arranged at the top of the furnace body 1, and the smoke outlet of the furnace body 1 is arranged at the bottom of the furnace body 1, and the smoke outlet of the furnace body 1 is arranged on both sides of the furnace tube group 3, and the smoke outlet of the furnace body 1 corresponds to the position of the burner 2. The burner 2 is arranged at the top of the furnace body 1, and the smoke enters the furnace body 1 from the top, and the time for the smoke to pass through the furnace body 1 is prolonged, which is conducive to sufficient heating of the furnace tube group 3.

[0038] According to the double-sided radiation heat carrier furnace provided by the utility model, Figure 1-Figure 2 As shown, the double-sided radiation heat carrier furnace further includes a hanging support structure 4 , which is installed on the top of the furnace body 1 , and is fixedly connected to the furnace tube group 3 .

[0039] In this embodiment, since the furnace tube group 3 expands due to heat, the stress expands along the extension direction of the furnace tube. By providing a furnace tube group 3 hanging support structure 4, the structure ensures that the stress of each furnace tube group 3 can be released freely, preventing the furnace tube group 3 from being squeezed and ruptured by the furnace body 1 after expansion, which is beneficial to improving the stability of the furnace tube group 3 system during operation.

[0040] According to some optional embodiments of the utility model, the hanging support structure 4 is any one or a combination of the following: a constant force spring support hanger, a variable force spring support hanger and a rigid support hanger.

[0041] Figure 3 It is an enlarged view of the inlet header of the double-sided radiation heat carrier furnace provided by the utility model. Figure 4 It is an enlarged view of the outlet header of the double-sided radiation heat carrier furnace provided by the utility model.

[0042] According to the double-sided radiation heat carrier furnace provided by the utility model, Figure 1 and Figure 3-Figure 4 As shown, the double-sided radiation heat carrier furnace also includes: an inlet header 5, an inlet distribution pipe 6, an outlet header 7 and an outlet distribution pipe 8, the inlet distribution pipe 6 connects the furnace tube group 3 and the inlet header 5, and the outlet distribution pipe 8 connects the furnace tube group 3 and the outlet header 7.

[0043] In this embodiment, the furnace tube group 3 distributes the flow through the inlet distribution pipe 6 and the outlet distribution pipe 8. Each unit can be flexibly designed according to design requirements, and the scale of the heat carrier furnace is not limited by the transportation size.

[0044] According to some embodiments of the utility model, an inlet header 5 is installed at the inlet of the furnace tube group 3, and an outlet header 7 is installed at the outlet. The furnace tube group 3 is connected to the inlet header 5 through an inlet distribution pipe 6, and the furnace tube group 3 is connected to the outlet header 7 through an outlet distribution pipe 8. The furnace tube group 3 distributes the flow through the arrangement of the inlet distribution pipe 6 and the outlet distribution pipe 8.

[0045] According to some embodiments of the utility model, the inlet header 5 and the outlet header 7 are arranged on the top of the furnace body 1, and the material enters the furnace tube group 3 from the inlet header 5 through the inlet distribution pipe 6 and is distributed in the furnace tube group 3, is heated by the flue gas in the furnace body 1 in the heating furnace, and then is led out from the outlet header 7 through the outlet distribution pipe 8.

[0046] According to the double-sided radiation heat carrier furnace provided by the utility model, Figure 1-Figure 4As shown, a plurality of furnace tube groups 3 are arranged in the furnace body 1 , and each of the furnace tube groups 3 corresponds to one inlet distribution pipe 6 and one outlet distribution pipe 8 .

[0047] In this embodiment, a plurality of furnace tube groups 3 are arranged in the furnace body 1. The furnace tube groups 3 are designed as multiple units. An outlet distribution pipe 8 and an inlet distribution pipe 6 corresponding to each furnace tube group 3 are arranged to ensure stable distribution of materials in each furnace tube group 3 unit.

[0048] According to some preferred embodiments of the present invention, the sum of the lengths of the outlet distribution pipe 8 and the inlet distribution pipe 6 corresponding to each furnace tube group 3 is equal.

[0049] According to the double-sided radiation heat carrier furnace provided by the utility model, Figure 1 As shown, the double-sided radiation heat carrier furnace further includes a shell 9 , which is coated on the outside of the furnace body 1 , and the shell 9 is fitted with the furnace body 1 to fix the furnace body 1 .

[0050] In this embodiment, the stability of the furnace body 1 can be increased by providing the outer shell 9 .

[0051] According to some preferred embodiments of the present invention, the housing 9 is a steel structure.

[0052] According to the double-sided radiation heat carrier furnace provided by the utility model, Figure 1 As shown, the double-sided radiation heat carrier furnace further includes a heat preservation structure 10 , and heat preservation materials are coated on the inner wall of the furnace body 1 and / or on the outer wall of the furnace body 1 .

[0053] In this embodiment, heat loss is prevented by coating the inner wall of the furnace body 1 and / or the outer wall of the furnace body 1 with a heat-insulating material.

[0054] Compared with the prior art, the double-sided radiation heat carrier furnace of the disclosed embodiment has the following technical effects:

[0055] (1) The furnace tube group 3 distributes the flow through the inlet distribution pipe 6 and the outlet distribution pipe 8. Each furnace tube group 3 can be flexibly designed according to the design requirements, and the scale of the heat carrier furnace is not limited by the transportation size;

[0056] (2) The furnace tube group 3 is provided with a hanging support structure 4, and the stress of each furnace tube group 3 can be released freely, and the scale of the heat carrier furnace is not limited by the stress of the furnace tube group 3; the furnace tube group 3 radiates on both sides, the heat exchange efficiency is high, and the furnace tubes are heated evenly;

[0057] (3) The combustion area is large, which can provide sufficient maintenance space for the furnace tubes during shutdown;

[0058] (4) An inner lining or thermal insulation structure 10 is provided so that waste heat of the subsequent flue gas can be recovered to improve the efficiency of the heat carrier furnace.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A double-sided radiation heat carrier furnace, characterized in that: include: A furnace body, a burner and at least one furnace tube group are arranged in the furnace body, wherein the furnace tube group is in a sheet shape and is perpendicular to the bottom surface of the furnace body; burners are arranged on both sides of the furnace tube group along the perpendicular direction of the furnace tube group, the burners are used to burn and generate flue gas, and the flue gas is used to heat the furnace tube group.

2. The double-sided radiation heat carrier furnace according to claim 1, characterized in that: The burner is arranged at the bottom of the furnace body, and a smoke outlet is arranged at the top of the furnace body. The smoke outlet is used to discharge the smoke after heating the furnace tube group out of the furnace body.

3. The double-sided radiation heat carrier furnace according to claim 1, characterized in that: It also includes a hanging support structure, which is installed on the top of the furnace body and is fixedly connected to the furnace tube group.

4. The double-sided radiation heat carrier furnace according to claim 1, characterized in that: Also includes: An inlet header, an inlet distribution pipe, an outlet header and an outlet distribution pipe, wherein the inlet distribution pipe connects the furnace tube group and the inlet header, and the outlet distribution pipe connects the furnace tube group and the outlet header.

5. The double-sided radiation heat carrier furnace according to claim 4, characterized in that: A plurality of furnace tube groups are arranged in the furnace body, and each of the furnace tube groups corresponds to one inlet distribution pipe and one outlet distribution pipe.

6. The double-sided radiation heat carrier furnace according to claim 1, characterized in that: It also includes a shell, which covers the outer side of the furnace body and fits the furnace body to fix the furnace body.

7. The double-sided radiation heat carrier furnace according to claim 1, characterized in that: It also includes a heat-insulating structure, in which a heat-insulating material is coated on the inner wall of the furnace body and / or on the outer wall of the furnace body.

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