Water-cooling flue structure of smelting furnace

Abstract

The utility model discloses a smelting furnace's water-cooling flue structure, including water-cooling pipe layer and shell, the inner side of water-cooling pipe layer is fixed with heat conduction pipe, and the heat conduction pipe and water-cooling pipe layer are welded and fixed, there are a plurality of heat conduction pipe, and the outer wall of heat conduction pipe is fixed with first heat conduction fin, the tail end of heat conduction pipe is fixed with second heat conduction fin, and the second heat conduction fin is fixed with the water-cooling pipe layer. And the second heat conduction piece and the heat conduction pipe are fixed in a welded mode, the shell is fixed to the outer portion of the water cooling pipe layer, and a sintering layer is fixed to the inner wall of the heat conduction pipe. Compared with an existing water-cooling flue structure, the water-cooling flue structure of the smelting furnace is provided with the efficient heat conduction mechanism, the heat conduction area of the device is effectively increased, the device can fully absorb heat of flue gas, the water-cooling effect and the waste heat utilization rate of the device can be improved, meanwhile, the device is provided with the anti-corrosion coating structure, and the service life of the device is prolonged. The device can be effectively prevented from being corroded by flue gas, and the abrasion of the device is reduced, so that the service life of the device is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of water-cooled flues, in particular to a water-cooled flue structure of a smelting furnace. Background Art

[0002] In the production process of special ferroalloys, smelting furnaces are often needed to smelt ferroalloy raw materials. A large amount of flue gas will be generated during the smelting process. These flue gases need to be cooled and purified before they can meet emission standards. Using water-cooled flues to cool the flue gas not only has a high cooling efficiency, but also can achieve the recovery and reuse of waste heat from the flue gas.

[0003] The announcement number authorized by China is CN207113617U, and the patent is named as the water-cooling structure of the flue of the submerged arc furnace. The device includes: a metal cylinder, a refractory lining, a clip, and a water-cooling pipe; wherein a refractory lining is attached to the inner surface of the metal cylinder, the clip is fixed in the metal cylinder, and several water-cooling pipes are arranged in a ring in the metal cylinder and the extension direction of the water-cooling pipe is in the same direction as the metal cylinder, and each section of the water-cooling pipe is fixed by at least two clips located at its two ends; the outer wall of the water-cooling pipe is provided with radial fins extending outward, and the effective heat exchange area of ​​the water-cooling pipe of the utility model can reach 100% of the surface area, which greatly increases the heat exchange efficiency without increasing the number of water-cooling pipes and reduces the difficulty of welding. The fins on the water-cooling pipe can maximize the heat exchange area.

[0004] Although the above device can increase the heat exchange area, there are still some problems when using the device:

[0005] 1. The device only exchanges heat through a circle of water-cooling pipes around it. When the flue gas passes through the device, it is difficult for the flue gas in the middle to contact the water-cooling pipes, resulting in insufficient heat conduction.

[0006] 2. The device does not have a wear-resistant and anti-corrosion coating. The chemical components in the flue gas may cause the device to corrode rapidly, and the impact of the flue gas may also cause the gripping device to wear rapidly.

[0007] In view of the above situation, technical innovation is carried out on the basis of the existing water-cooled flue structure. Utility Model Content

[0008] The utility model aims to provide a water-cooled flue structure of a smelting furnace to solve the problems raised in the above-mentioned background technology.

[0009] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a water-cooled flue structure of a smelting furnace, comprising a water-cooling tube layer and an outer shell, a heat-conducting tube is fixed to the inner side of the water-cooling tube layer, and the heat-conducting tube and the water-cooling tube layer are welded and fixed, a plurality of heat-conducting tubes are provided, and a first heat-conducting plate is fixed to the outer wall of the heat-conducting tube, a second heat-conducting plate is fixed to the end of the heat-conducting tube, and the second heat-conducting plate and the heat-conducting tube are welded and fixed, the outer shell is fixed to the outside of the water-cooling tube layer, a sintering layer is fixed to the inner wall of the heat-conducting tube, and one end of the interior of the heat-conducting tube is filled with heat-conducting liquid.

[0010] Furthermore, the water cooling tube layer is made of stainless steel, and the heat conducting tube is made of copper.

[0011] Furthermore, the first heat conducting plate and the second heat conducting plate are both cylindrical tubular structures, and local cross-sections of the first heat conducting plate and the second heat conducting plate are wavy.

[0012] Furthermore, the surfaces of the shell, the water-cooling tube layer, the heat-conducting tube, the first heat-conducting plate and the second heat-conducting plate are all sprayed with anti-corrosion coating, and the anti-corrosion coating is a silicon-containing inorganic polymer coating.

[0013] Furthermore, the sintered layer is in granular form, and the heat transfer fluid is a phase change heat transfer fluid.

[0014] Compared with the prior art, the beneficial effects of the utility model are: the device is provided with an efficient heat conduction mechanism, which effectively increases the heat conduction area of ​​the device, so that the device can fully absorb the heat of the flue gas, which is beneficial to improving the water cooling effect and waste heat utilization rate of the device. At the same time, the device is provided with an anti-corrosion coating structure, which can effectively prevent the flue gas from corroding the device and reduce the wear of the device, thereby increasing the service life of the device.

[0015] 1. The utility model is provided with a water-cooling tube layer, a heat-conducting tube, a first heat-conducting sheet, a second heat-conducting sheet, a shell, a sintering layer and a heat-conducting liquid. The first heat-conducting sheet and the second heat-conducting sheet are both made of aluminum sheets or copper sheets. The water-cooling tube layer can be connected to cooling water. When the flue gas passes through the device, the water-cooling tube layer can effectively take away the heat in the flue gas. At the same time, the flue gas will heat the first heat-conducting sheet and the second heat-conducting sheet. The heat-conducting tube can transfer the heat of the first heat-conducting sheet and the second heat-conducting sheet to the water-cooling tube layer, thereby improving the water cooling efficiency of the flue gas and improving the recovery rate of the flue gas waste heat. When the end and the middle of the heat pipe are heated by the second heat conducting plate and the first heat conducting plate, the heat conducting liquid inside the heat conducting pipe will vaporize and absorb heat, and condense and release heat in the relatively low temperature part of the heat conducting pipe in contact with the water cooling pipe layer, thereby realizing phase change heat conduction. The liquid heat conducting liquid will return to the middle and the end of the heat conducting pipe under the capillary action of the sintering layer, thereby realizing the vaporization and condensation cycle of the heat conducting liquid. Through the above structure, the heat conducting area of ​​the device is effectively increased, so that the device can fully absorb the heat of the flue gas, which is beneficial to improving the water cooling effect and waste heat utilization rate of the device.

[0016] 2. The utility model arranges a water-cooling tube layer, a heat-conducting tube, a first heat-conducting plate, a second heat-conducting plate and a shell. The anti-corrosion coating on the surface of the water-cooling tube layer, the first heat-conducting plate of the heat-conducting tube, the second heat-conducting plate and the shell can effectively prevent the flue gas from corroding the device. At the same time, the silicon-containing inorganic polymer coating has strong wear resistance and heat resistance, which can effectively reduce the wear of the device caused by the impact of flue gas and improve the service life of the device. Through the above structure, the device can be effectively prevented from being corroded by flue gas and the wear of the device can be reduced, thereby improving the service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front view and cross-sectional structural schematic diagram of a water-cooling flue structure of a smelting furnace of the utility model;

[0018] Figure 2 It is a top view and cross-sectional structural schematic diagram of a water-cooled flue structure of a smelting furnace of the utility model;

[0019] Figure 3 It is a partial front view and cross-sectional enlarged structural schematic diagram of a heat conducting tube, a sintering layer and a heat conducting liquid of a water-cooling flue structure of a smelting furnace of the utility model.

[0020] In the figure: 1. Water-cooling tube layer; 2. Heat-conducting pipe; 3. First heat-conducting plate; 4. Second heat-conducting plate; 5. Shell; 6. Sintering layer; 7. Heat-conducting liquid. DETAILED DESCRIPTION

[0021] The following is combined with Figure 1-3 The principles and features of the present invention are described, and the examples given are only used to explain the present invention, and are not used to limit the scope of the present invention. The present invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become clearer according to the following description and claims. It should be noted that the drawings are all in a very simplified form and are not in precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0022] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a component centered. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a component centered. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a component centered. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0024] like Figure 1-3 As shown, a water-cooled flue structure of a smelting furnace comprises a water-cooled tube layer 1 and a shell 5, a heat-conducting tube 2 is fixed to the inner side of the water-cooled tube layer 1, and the heat-conducting tube 2 is welded and fixed to the water-cooled tube layer 1, a plurality of heat-conducting tubes 2 are provided, and a first heat-conducting sheet 3 is fixed to the outer wall of the heat-conducting tube 2, a second heat-conducting sheet 4 is fixed to the end of the heat-conducting tube 2, and the second heat-conducting sheet 4 is welded and fixed to the heat-conducting tube 2, the shell 5 is fixed to the outside of the water-cooled tube layer 1, a sintered layer 6 is fixed to the inner wall of the heat-conducting tube 2, and one end of the interior of the heat-conducting tube 2 is filled with a heat-conducting liquid 7, the first heat-conducting sheet 3 and the second heat-conducting sheet 4 are both made of aluminum sheets or copper sheets, the water-cooled tube layer 1 can be connected to cooling water, and when the flue gas passes through the device, the water-cooled tube layer 1 can effectively take away the heat in the flue gas, and at the same time the flue gas will heat the first heat-conducting sheet 3 and the second The heat conducting sheet 4 and the heat conducting pipe 2 can conduct the heat of the first heat conducting sheet 3 and the second heat conducting sheet 4 to the water cooling pipe layer 1, thereby improving the water cooling efficiency of the flue gas and improving the recovery rate of the flue gas waste heat. When the end and the middle part of the heat conducting pipe 2 are heated by the second heat conducting sheet 4 and the first heat conducting sheet 3, the heat conducting liquid 7 inside the heat conducting pipe 2 will vaporize and absorb heat, and condense and release heat in the relatively low temperature part where the heat conducting pipe 2 contacts the water cooling pipe layer 1, thereby realizing phase change heat conduction. The liquid heat conducting liquid 7 will return to the middle and the end of the heat conducting pipe 2 under the capillary action of the sintering layer 6, thereby realizing the vaporization and condensation cycle of the heat conducting liquid 7. Through the above structure, the heat conducting area of ​​the device is effectively increased, so that the device can fully absorb the heat of the flue gas, which is beneficial to improving the water cooling effect and waste heat utilization rate of the device.

[0025] like Figure 1-3As shown, the water-cooling tube layer 1 is made of stainless steel, and the heat-conducting tube 2 is made of copper, the first heat-conducting plate 3 and the second heat-conducting plate 4 are both cylindrical tubular structures, and the local cross-sections of the first heat-conducting plate 3 and the second heat-conducting plate 4 are wavy, and the surfaces of the shell 5, the water-cooling tube layer 1, the heat-conducting tube 2, the first heat-conducting plate 3 and the second heat-conducting plate 4 are sprayed with anti-corrosion coating, and the anti-corrosion coating is a silicon-containing inorganic polymer coating, the sintering layer 6 is granular, and the heat-conducting fluid 7 is a phase-change heat-conducting fluid 7, the anti-corrosion coating on the surface of the water-cooling tube layer 1, the heat-conducting tube 2, the first heat-conducting plate 3, the second heat-conducting plate 4 and the shell 5 can effectively prevent the flue gas from corroding the device, and the silicon-containing inorganic polymer coating has strong wear resistance and heat resistance, which can effectively reduce the wear of the device caused by the impact of flue gas, thereby improving the service life of the device. Through the above structure, the device can be effectively prevented from being corroded by flue gas and the wear of the device can be reduced, thereby improving the service life of the device.

[0026] In summary: when using the water-cooled flue structure of the smelting furnace, first, the shell 5 of the device can be fixed to the smoke outlet of the smelting furnace, the water-cooled pipe layer 1 can be connected to an external cold water source, and the water outlet can lead to domestic hot water pipes and other pipes that require hot water. When the high-temperature flue gas passes through the device, the flue gas will heat the water-cooled pipe layer 1 and the cold water in the water-cooled pipe layer 1, thereby reducing the flue gas temperature, and the experimental heat energy is recycled. The first heat conductive plate 3 and the second heat conductive plate 4 are both made of aluminum or copper sheets. The water-cooled pipe layer 1 can be connected to cooling water. When the flue gas passes through the device, the water-cooled pipe layer 1 can effectively take away the heat in the flue gas. At the same time, the flue gas will heat the first heat conductive plate 3 and the second heat conductive plate 4, and the heat pipe 2 can transfer the heat of the first heat conductive plate 3 and the second heat conductive plate 4 to the water-cooled pipe layer 1, thereby improving the water cooling efficiency of the flue gas and improving the flue gas The recovery rate of waste heat from the heat pipe 2 is improved. When the end and the middle part of the heat pipe 2 are heated by the second heat conducting plate 4 and the first heat conducting plate 3, the heat conducting liquid 7 inside the heat pipe 2 will vaporize and absorb heat, and condense and release heat in the relatively low temperature part of the heat pipe 2 in contact with the water-cooling pipe layer 1, thereby realizing phase change heat conduction. The liquid heat conducting liquid 7 will return to the middle and the end of the heat pipe 2 under the capillary action of the sintering layer 6, thereby realizing the vaporization and condensation cycle of the heat conducting liquid 7. The anti-corrosion coating on the surface of the water-cooling pipe layer 1, the first heat conducting plate 3 of the heat pipe 2, the second heat conducting plate 4 and the outer shell 5 can effectively prevent the flue gas from corroding the device. At the same time, the silicon-containing inorganic polymer coating has strong wear resistance and heat resistance, which can effectively reduce the wear of the device caused by the impact of flue gas and increase the service life of the device. This is the working principle of the water-cooled flue structure of the smelting furnace.

[0027] The above are only preferred embodiments of the utility model, and do not impose any form of limitation on the utility model. Any ordinary technician in the industry can smoothly implement the utility model as shown in the drawings and above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the utility model using the technical content disclosed above are all equivalent embodiments of the utility model. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the utility model are still within the protection scope of the technical solution of the utility model.

Claims

1. A water-cooled flue structure of a smelting furnace, comprising a water-cooled tube layer (1) and a shell (5), characterized in that: A heat conducting pipe (2) is fixed to the inner side of the water-cooling pipe layer (1), and the heat conducting pipe (2) and the water-cooling pipe layer (1) are fixed by welding. A plurality of heat conducting pipes (2) are provided, and a first heat conducting plate (3) is fixed to the outer wall of the heat conducting pipe (2). A second heat conducting plate (4) is fixed to the end of the heat conducting pipe (2), and the second heat conducting plate (4) and the heat conducting pipe (2) are fixed by welding. The outer shell (5) is fixed to the outside of the water-cooling pipe layer (1), a sintering layer (6) is fixed to the inner wall of the heat conducting pipe (2), and one end of the interior of the heat conducting pipe (2) is filled with a heat conducting liquid (7).

2. The water-cooled flue structure of a smelting furnace according to claim 1, characterized in that: The water cooling tube layer (1) is made of stainless steel, and the heat conducting tube (2) is made of copper.

3. The water-cooled flue structure of a smelting furnace according to claim 1, characterized in that: The first heat conducting plate (3) and the second heat conducting plate (4) are both cylindrical tubular structures, and local cross-sections of the first heat conducting plate (3) and the second heat conducting plate (4) are wavy.

4. The water-cooled flue structure of a smelting furnace according to claim 1, characterized in that: The surfaces of the shell (5), the water-cooling tube layer (1), the heat-conducting tube (2), the first heat-conducting plate (3) and the second heat-conducting plate (4) are all sprayed with anti-corrosion paint, and the anti-corrosion paint is a silicon-containing inorganic polymer paint.

5. The water-cooled flue structure of a smelting furnace according to claim 1, characterized in that: The sintered layer (6) is in a granular form, and the heat-conducting fluid (7) is a phase-change heat-conducting fluid (7).

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