Waste heat recovery device of smelting furnace for glass production

Abstract

The invention relates to the technical field of waste heat recovery, in particular to a waste heat recovery device of a smelting furnace for glass production, which comprises an equipment main body, a connecting assembly, a boiler, a high-temperature area, a first transition box, a liquid inlet, a medium-temperature area, blocking blocks, a low-temperature area, a blocking disc and a through hole. The flow speed of the cooling liquid can be slightly reduced, the situation that the temperature of the smoke conveying pipe is lower than the acid dew point condensation temperature due to the fact that the flow speed of the cooling liquid is too high is avoided, the multiple sets of blocking discs are installed in the low-temperature area, when the cooling liquid passes through, the speed can be greatly reduced, and the cooling liquid with the high temperature can temporarily stay between the two sets of blocking discs; and cooling liquid enters the high-temperature area and the smoke conveying pipe interlayer through the liquid inlet, the flowing speed is high, the temperature of the joint of the boiler and the smoke conveying pipe can be greatly reduced, the inner container is arranged at the joint, and the joint of the smoke conveying pipe and the boiler is prevented from being oxidized under the high-temperature condition for a long time.

Description

Technical Field

[0001] This invention relates to the field of waste heat recovery technology, specifically a waste heat recovery device for a glass production furnace. Background Technology

[0002] The flue gas emitted from glass melting furnaces is extremely hot, typically reaching 450-600℃. Waste heat recovery devices can convert the heat energy in the flue gas into usable energy through heat exchange equipment. The recovered waste heat can directly replace some fuels, significantly reducing the consumption of energy sources such as natural gas and heavy oil, and greatly reducing production costs.

[0003] In traditional glass production, waste heat recovery devices for furnaces are connected to the furnace via pipes, allowing high-temperature flue gas to enter the waste heat recovery device. The connection point between the pipe and the boiler is often subjected to extremely high temperatures, while the connection point to the waste heat recovery device experiences a significantly lower temperature. In extremely cold weather, a low-temperature zone may appear at the connection point between the pipe and the waste heat recovery device. If the temperature in this zone falls below the acid dew point, acid dew will condense on the pipe wall, causing corrosion and affecting its service life. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides a waste heat recovery device for glass production furnaces that can prevent low-temperature zones from forming inside pipes, thus avoiding acid dew condensation on the pipe walls and causing corrosion.

[0005] To address the problems in the prior art, this invention provides a waste heat recovery device for a glass production furnace, comprising a main body of equipment, a connecting assembly mounted on the main body of equipment, a flue gas outlet of a boiler fixedly connected to the main body of equipment via a flue gas pipe, and the flue gas pipe being divided into multiple zones: a high-temperature zone, a medium-temperature zone, and a low-temperature zone. The high-temperature zone is installed at the flue gas outlet of the boiler. A first transition box is fixedly connected to the outer wall of the flue gas pipe, and the upper end of the first transition box is connected to one end of the high-temperature zone. A through hole is provided at the upper end of the first transition box. One end of the liquid inlet is fixedly connected to the lower end of the first transition box, and the other end of the liquid inlet is fixedly connected to a coolant conveyor. The medium-temperature zone is installed at one end of the high-temperature zone. Multiple sets of baffles are installed on the inner wall of the medium-temperature zone, and each set of baffles is staggered. The low-temperature zone is installed at one end of the medium-temperature zone, and multiple sets of baffles are installed inside the low-temperature zone. Multiple sets of through holes are provided on the baffles.

[0006] Specifically, the internal components of the connecting assembly include a high-temperature zone, a first transition box, a liquid inlet, a through-hole, a medium-temperature zone, a flue pipe, a baffle block, a low-temperature zone, a baffle plate, a through hole, a second transition box, a water outlet box, a storage box, and a heat absorption box. One end of the flue pipe is fixedly connected to the flue outlet of the boiler, and the other end of the flue pipe is fixedly connected to the flue inlet of the main body of the equipment. The flue pipe is located inside the cooling pipe.

[0007] Specifically, a set of second transition boxes is fixedly installed at one end of the low-temperature zone, and two sets of water outlet boxes are fixedly installed at the lower end of the second transition boxes. One end of the water outlet boxes is fixedly connected to the upper end of the storage box, and a set of heat absorption boxes is installed at one end of the storage box. The heat absorption boxes are connected to the upper end of the boiler through a set of pipes.

[0008] Specifically, the main body of the equipment is equipped with a descaling component. The descaling component includes a mixing tank, an inlet, a motor, a disc, stirring rods, a conveying pipe, pipes, and a storage box. The mixing tank is fixedly installed at the upper end of the main body of the equipment. Two sets of inlets are installed on the mixing tank. A set of motors is fixedly installed on the mixing tank. The output shaft of the motor is fixedly connected to the upper end of the disc. Multiple sets of stirring rods are fixedly installed on the side wall of the disc. The mixing tank is fixedly connected to the upper end of the conveying pipe. The conveying pipe passes through multiple sets of pipes, and an opening is provided at the connection between the conveying pipe and each set of pipes. The lower end of the conveying pipe is fixedly connected to the storage box, which is installed inside the main body of the equipment.

[0009] Specifically, one end of a heat transfer pipe is fixedly connected to one side of the main body of the equipment, the other end of the heat transfer pipe is fixedly connected to the lower end of the boiler, the heat transfer pipe is located inside the base, the boiler is fixedly installed on the base, and one end of the outlet is fixedly connected to the lower end of the boiler.

[0010] Specifically, S1: First, pour citric acid powder or white vinegar into the mixing tank through the inlet, then pour in twice the amount of hot water (95-100 degrees Celsius) through the inlet; S2: Start the motor to rotate the disc and stirring rod, allowing the white vinegar or citric acid powder and hot water to fully mix; S3: Open the valve at the top of the delivery pipe, allowing the mixture to enter the interior of each set of pipes. Once the mixture fills the pipes, allow it to remain in the pipes for 1-3 hours; S4: After the scale removal is complete, close the valve at the top of the delivery pipe and open the valve at the bottom. Use the flushing device to inject clean water into the pipes. The clean water will flush the mixture into the delivery pipe and then into the collection tank for subsequent processing.

[0011] The beneficial effects of this invention are:

[0012] 1. In this invention, multiple sets of baffles are installed inside the medium temperature zone, which can slightly reduce the flow rate of the coolant and prevent it from flowing too fast, causing the temperature of the flue pipe to be lower than the acid dew point condensation temperature. In the low temperature zone, multiple sets of baffles are installed inside, which greatly slows down the speed of the coolant when it passes through, and the coolant with a higher temperature will stay briefly between the two sets of baffles, thereby ensuring the temperature in the low temperature zone.

[0013] 2. In this invention, the coolant that has absorbed heat will enter the interior of the storage tank, which will cause the internal temperature of the storage tank to rise sharply. The storage tank can store some heat. When the boiler needs waste heat, it will work with the main body of the equipment to inject hot air into the interior of the boiler, thereby effectively utilizing waste heat and reducing resource consumption.

[0014] 3. The descaling component in this invention can inject a mixture of citric acid powder and hot water into the pipes inside the main body of the equipment, thereby eliminating scale inside the pipes and preventing the accumulation of a large amount of scale inside the pipes from affecting the heat transfer efficiency.

[0015] 4. In this invention, the coolant enters the high-temperature zone and the flue gas pipe partition through the inlet, and the flow rate is fast, which can reduce the temperature at the connection between the boiler and the flue gas pipe. In addition, the connection is equipped with an inner liner to prevent oxidation at the connection between the flue gas pipe and the boiler due to prolonged exposure to high temperatures. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0018] Figure 2 This is a diagram showing the overall internal component connection structure of the present invention.

[0019] Figure 3 This is a diagram showing the internal component connection structure of the descaling assembly in this invention.

[0020] Figure 4 This is a schematic diagram of the internal component connection structure in the high-temperature zone of this invention;

[0021] Figure 5 This is a schematic diagram of the internal component connection structure in the intermediate temperature zone of this invention;

[0022] Figure 6 This is a schematic diagram of the internal component connection structure in the low-temperature zone of the present invention.

[0023] In the diagram: 1. Main body of the equipment; 110. Base; 111. Boiler; 112. Heat transfer pipe; 113. Outlet; 2. Descaling assembly; 210. Mixing box; 211. Inlet; 212. Motor; 213. Disc; 214. Stirring rod; 215. Conveying pipe; 216. Pipeline; 217. Storage box; 3. Connecting assembly; 310. High temperature zone; 311. First transition box; 312. Liquid inlet; 313. Through port; 314. Medium temperature zone; 315. Flue gas pipe; 316. Barrier block; 317. Low temperature zone; 318. Barrier plate; 319. Through hole; 320. Second transition box; 321. Water outlet box; 322. Storage box; 323. Heat absorption box. Detailed Implementation

[0024] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0025] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0026] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this technology based on the specific circumstances.

[0027] In the description of this application, spatial relation terms such as "below," "under," "below," "below," "above," "over," etc., are used herein to describe the relationship between one element or feature shown in the figures and other elements or features. It should be understood that, in addition to the orientation shown in the figures, spatial relation terms also include different orientations of the device in use and operation. For example, if the device in the figures is flipped, an element or feature described as "below" or "under" or "below" of other elements or features will be oriented "above" other elements or features. Therefore, the exemplary terms "below" and "under" can include both upper and lower orientations. Furthermore, the device may also include other orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptive terms used herein are interpreted accordingly.

[0028] In the description of this application, the term "for example" is used to mean "used as an example, illustration, or description." Any embodiment described as "for example" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to make and use the invention. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that the invention can be made without using these specific details. In other instances, well-known structures and processes will not be described in detail to avoid obscuring the description of the invention with unnecessary detail. Therefore, the invention is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application.

[0029] Example 1:

[0030] like Figure 1 , Figure 2 , Figure 4 , Figure 5 as well as Figure 6The waste heat recovery device for a glass production furnace shown includes a main body 1, a connecting assembly 3 mounted on the main body 1, and a flue gas outlet of a boiler 111 fixedly connected to the main body 1 via a flue gas pipe. The flue gas pipe is divided into multiple zones: a high-temperature zone 310, a medium-temperature zone 314, and a low-temperature zone 317. The high-temperature zone 310 is installed at the flue gas outlet of the boiler 111. A first transition box 311 is fixedly connected to the outer wall of the flue gas pipe 315, and the upper end of the first transition box 311 is connected to one end of the high-temperature zone 310. The upper end of the transfer box 311 is provided with a through hole. One end of the liquid inlet 312 is fixedly connected to the lower end of the first transfer box 311, and the other end of the liquid inlet 312 is fixedly connected to the coolant conveyor. The intermediate temperature zone 314 is installed at one end of the high temperature zone 310. Multiple sets of barrier blocks 316 are installed on the inner wall of the intermediate temperature zone 314, and each set of barrier blocks 316 is installed alternately. The low temperature zone 317 is installed at one end of the intermediate temperature zone 314. Multiple sets of barrier plates 318 are installed inside the low temperature zone 317, and multiple sets of through holes 319 are opened on the barrier plates 318.

[0031] The internal components of the connecting assembly 3 include a high-temperature zone 310, a first transition box 311, a liquid inlet 312, a through-hole 313, a medium-temperature zone 314, a flue pipe 315, a baffle block 316, a low-temperature zone 317, a baffle plate 318, a through hole 319, a second transition box 320, a water outlet box 321, a storage box 322, and a heat absorption box 323. One end of the flue pipe 315 is fixedly connected to the flue outlet of the boiler 111, and the other end of the flue pipe 315 is fixedly connected to the flue inlet of the main body 1 of the equipment. The flue pipe 315 is located inside the cooling pipe.

[0032] A set of second transition boxes 320 are fixedly installed at one end of the low temperature zone 317. Two sets of water outlet boxes 321 are fixedly installed at the lower end of the second transition boxes 320. One end of the water outlet box 321 is fixedly connected to the upper end of the storage box 322. A set of heat absorption boxes is installed at one end of the storage box 322, and the heat absorption boxes are connected to the upper end of the boiler 111 through a set of pipes 216.

[0033] like Figure 1 as well as Figure 3As shown, a descaling assembly 2 is installed on the main body 1 of the equipment. The descaling assembly 2 includes a mixing tank 210, an inlet 211, a motor 212, a disc 213, a stirring rod 214, a conveying pipe 215, a pipe 216, and a storage box 217. The mixing tank 210 is fixedly installed on the upper end of the main body 1 of the equipment. Two sets of inlets 211 are installed on the mixing tank 210. A set of motors 212 is fixedly installed on the mixing tank 210. The output shaft of the motor 212 is fixedly connected to the upper end of the disc 213. Multiple sets of stirring rods 214 are fixedly installed on the side wall of the disc 213. The upper end of the conveying pipe 215 is fixedly connected to the mixing tank 210. The conveying pipe 215 passes through multiple sets of pipes 216, and an opening is provided at the connection between the conveying pipe 215 and each set of pipes 216. The lower end of the conveying pipe 215 is fixedly connected to the storage box 217. The storage box 217 is installed inside the main body 1 of the equipment.

[0034] One end of the heat transfer pipe 112 is fixedly connected to one side of the main body 1 of the equipment, and the other end of the heat transfer pipe 112 is fixedly connected to the lower end of the boiler 111. The heat transfer pipe 112 is located inside the base 110, and the boiler 111 is fixedly installed on the base 110. One end of the outlet 113 is fixedly connected to the lower end of the boiler 111.

[0035] like Figure 1 , Figure 2 , Figure 4 , Figure 5 as well as Figure 6 As shown, before recovering the high-temperature flue gas generated by boiler combustion in this invention, the coolant conveyor is first started. It will transport the coolant through the inlet 312 to the inside of the first transition box 311. After the coolant enters the inside of the first transition box 311, it will enter the interlayer between the flue pipe 315 and the connecting pipe through the opening at the upper end of the first transition box 311. After the flue gas enters the inside of the flue pipe 315, it will absorb a large amount of heat. The end of the flue pipe 315 near the flue inlet is provided with an inner liner. The heat will be transferred to the inner liner and then to the flue pipe 315. The coolant will continuously flush the outer wall of the flue pipe 315 to remove a large amount of heat, thereby reducing the temperature at the high-temperature zone 310 and preventing the temperature at the high-temperature zone 310 from being too high, which would cause the flue pipe 315 at the high-temperature zone 310 to oxidize faster due to excessive temperature.

[0036] When the coolant enters the intermediate temperature zone 314, it will be blocked by the barrier block 316, thereby reducing its flow rate. After the flow rate is reduced, the cooling efficiency will also be reduced, thus preventing the temperature in the intermediate temperature zone 314 from being too low in extremely cold weather, which would cause sulfuric acid dew to condense on the outer wall of the flue pipe 315 and cause corrosion to the flue pipe 315.

[0037] Furthermore, in extremely cold weather, a low-temperature zone 317 can easily form in the connecting pipe section far from the flue gas inlet. The baffle plate 318 inside the low-temperature zone 317 will have a stronger blocking effect than the baffle block 316. Moreover, multiple sets of through holes 319 are opened at the upper end of the baffle plate 318, allowing coolant to flow through the interlayer formed by the baffle plate 318 and the flue gas pipe 315, as well as through the through holes 319. Meanwhile, the medium-temperature zone 314 will continuously receive warm coolant, which will cause most of the coolant to remain between the two sets of baffle plates 318. The temperature of the coolant will be transferred to the outer wall of the flue gas pipe 315 in the low-temperature zone 317, thereby increasing its temperature and preventing it from falling below the temperature at which sulfuric acid dew can condense, thus increasing the service life of the flue gas pipe 315.

[0038] like Figure 1 as well as Figure 3 As shown, firstly, citric acid powder or white vinegar is poured into the mixing tank 210 through inlet 211. Then, twice the amount of hot water (95-100 degrees Celsius) is poured into the mixing tank 210 through inlet 211, and then the motor 212 is started to drive the disc 213 and the stirring rod 214 to rotate, so that the white vinegar or citric acid powder and hot water are fully mixed. Then, the valve at the upper end of the delivery pipe 215 is opened, and the mixture will enter the interior of each group of pipes 216 through the delivery pipe 215. When the mixture fills the interior of the pipes 216, it is allowed to stay in the pipes 216 for 1-3 hours. After the scale is removed, the valve at the upper end of the delivery pipe 215 is closed and the valve at the lower end is opened. Clean water is injected into the interior of the pipes 216 using the flushing device. At this time, the clean water will flush the mixture into the interior of the delivery pipe 215 and then into the interior of the collection box 217 for subsequent processing.

[0039] If the limescale buildup is very severe, you can adjust the mixing ratio of white vinegar or citric acid powder and hot water. The above ratio is 1:2, which can be changed to 1:1.

[0040] The heat-absorbing fan inside the heat-absorbing box 323 can transport the hot air emitted by the high-temperature coolant inside the storage box 322 to the inside of the boiler 111 through a set of pipes 216. This, together with the main body of the equipment, can transport heat to the boiler 111 through the heat transfer pipe 112, thereby accelerating the preheating speed of the boiler 111. After the coolant has been cooled, it can be discharged through the outlet on one side of the storage box 322.

[0041] Working Principle: In this invention, when scale removal is required, firstly, white vinegar or citric acid powder and hot water are injected into the mixing tank 210 through inlet 211. Then, motor 212 is started, which drives the disc 213 and stirring rod 214 to rotate, thus ensuring thorough mixing. Next, the valve at the upper end of the delivery pipe 215 is opened, allowing the mixture to enter the various pipes 216 through the delivery pipe 215. Once the mixture fills the pipes 216 and remains there for 1-3 hours, after scale removal is complete, the upper valve of the delivery pipe 215 is closed, and the lower valve is opened. A flushing device is then used to inject clean water into the pipes 216. Water will flush the mixture into the inside of the delivery pipe 215, and then into the inside of the collection box 217 for subsequent processing. Before the boiler combustion, coolant is first injected into the inlet 312 through the coolant conveyor. The coolant will enter the interlayer between the flue pipe 315 and the connecting pipe through the opening at the upper end of the first transition box 311. After the flue gas enters the inside of the flue pipe 315, it will absorb a large amount of heat. The end of the flue pipe 315 near the flue inlet is equipped with an inner liner, and the heat will be transferred to the inner liner and then to the flue pipe 315. The coolant will continuously flush the outer wall of the flue pipe 315, thereby carrying away a large amount of heat, thus reducing the temperature at the high-temperature zone 310 and preventing overheating. The excessively high temperature in zone 310 causes accelerated oxidation of the flue pipe 315 in the high-temperature zone 310. Furthermore, when the coolant enters the medium-temperature zone 314, it is blocked by the baffle block 316, reducing its flow rate. This reduced flow rate decreases cooling efficiency, thus preventing excessively low temperatures in the medium-temperature zone 314 under extreme cold conditions, which could cause sulfuric acid dew to condense on the outer wall of the flue pipe 315 and corrode it. The coolant can flow through the interlayer formed by the baffle plate 318 and the flue pipe 315, as well as through the through-hole 319. However, the medium-temperature zone 314 continuously receives warm coolant, causing most of the coolant to stagnate between the two sets of baffle plates 318. The coolant temperature is transferred to the outer wall of the flue pipe 315 in the low-temperature zone 317, thereby increasing its temperature and preventing it from falling below the temperature at which sulfuric acid dew can condense, thus increasing the service life of the flue pipe 315. The high-temperature coolant enters the storage tank 322 through the outlet tank 321 for temporary storage. The heat absorption fan inside the heat absorption box 323 can transport the heat emitted by the high-temperature coolant inside the storage tank 322 to the inside of the boiler 111 through a set of pipes 216. This, together with the main body of the equipment, transfers heat to the boiler 111 through the heat transfer pipe 112, thereby accelerating the preheating speed of the boiler 111. After the coolant has been cooled, it can be discharged through the outlet on one side of the storage tank 322.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by the present invention.

Claims

1. A waste heat recovery device for a glass production furnace, characterized in that: it comprises a device main body (1); a connecting assembly (3) installed on the device main body (1); a boiler (111) whose smoke outlet is fixedly connected with the device main body (1) through a smoke conveying pipe (315), and the smoke conveying pipe is divided into a high-temperature zone (310), a medium-temperature zone (314) and a low-temperature zone (317); the high-temperature zone (310) is installed at the smoke outlet of the boiler (111); a first transition box (311) is fixedly connected with the outer wall of the smoke conveying pipe (315), and the upper end of the first transition box (311) is connected with one end of the high-temperature zone (310), and a through hole is formed in the upper end of the first transition box (311); a liquid inlet (312) has one end fixedly connected with the lower end of the first transition box (311), and the other end fixedly connected with a cooling liquid conveyor; the medium-temperature zone (314) is installed at one end of the high-temperature zone (310); a plurality of sets of blocking blocks (316) are installed on the inner wall of the medium-temperature zone (314), and each set of blocking blocks (316) are installed alternately; the low-temperature zone (317) is installed at one end of the medium-temperature zone (314); a plurality of sets of blocking discs (318) are installed inside the low-temperature zone (317); and a plurality of sets of through holes (319) are formed in the blocking discs (318). The interior of the connecting assembly (3) comprises the high-temperature zone (310), the first transition box (311), the liquid inlet (312), the through hole (313), the medium-temperature zone (314), the smoke conveying pipe (315), the blocking blocks (316), the low-temperature zone (317), the blocking discs (318), the through holes (319), a second transition box (320), a water outlet box (321), a storage box (322) and a heat absorption box (323), one end of the smoke conveying pipe (315) is fixedly connected with the smoke outlet of the boiler (111), the other end of the smoke conveying pipe (315) is fixedly connected with the smoke inlet of the device main body (1), and the smoke conveying pipe (315) is located inside the cooling pipe. One end of the low-temperature zone (317) is fixedly installed with one set of second transition boxes (320), the lower end of the second transition box (320) is fixedly installed with two sets of water outlet boxes (321), one end of the water outlet box (321) is fixedly connected with the upper end of the storage box (322), one end of the storage box (322) is installed with one set of heat absorption boxes, and the heat absorption boxes are connected with the upper end of the boiler (111) through one set of pipelines (216). ​ ​ ​ ​ ​ ​ ​ ​ ​ 2. A waste heat recovery device for a glass melting furnace according to claim 1, characterized in that: ​ 3. A waste heat recovery device for a glass melting furnace according to claim 2, characterized in that: ​ 4. A waste heat recovery device for a glass melting furnace according to claim 1, characterized in that: The device body (1) is provided with a descaling assembly (2), the inside of the descaling assembly (2) comprises a mixing box (210), an inlet (211), a motor (212), a disc (213), a stirring rod (214), a conveying pipe (215), a pipeline (216) and a storage box (217), the mixing box (210) is fixedly installed at the upper end of the device body (1), and two groups of inlets (211) are installed on the mixing box (210).

5. A waste heat recovery device for a glass melting furnace according to claim 4, characterized in that: A group of motors (212) are fixedly installed on the mixing box (210), the output shaft of the motor (212) is fixedly connected with the upper end of the disc (213), and a plurality of groups of stirring rods (214) are fixedly installed on the side wall of the disc (213).

6. A waste heat recovery device for a glass melting furnace according to claim 5, characterized in that: The mixing box (210) is fixedly connected with the upper end of the conveying pipe (215), the conveying pipe (215) penetrates through a plurality of groups of pipelines (216), the conveying pipe (215) and each group of pipelines (216) are provided with a through hole at the connection position, the lower end of the conveying pipe (215) is fixedly connected with the storage box (217), and the storage box (217) is installed in the inside of the device body (1).

7. A waste heat recovery device for a glass melting furnace according to claim 1, characterized in that: One end of the heat transfer pipe (112) is fixedly connected with one side of the device body (1), the other end of the heat transfer pipe (112) is fixedly connected with the lower end of the boiler (111), the heat transfer pipe (112) is located in the inside of the base (110), the boiler (111) is fixedly installed on the base (110), and one end of the outlet (113) is fixedly connected with the lower end of the boiler (111).

8. A method of scale treatment of a waste heat recovery device of a glass manufacturing furnace, characterized by: S1: firstly, the citric acid powder or white vinegar is poured into the inside of the mixing box (210) through the inlet (211), then twice the amount of hot water (95-100 DEG C) is poured into the mixing box (210) through the inlet (211), the hot water is mixed with the citric acid powder or white vinegar, and the disc (213) and the stirring rod (214) are driven to rotate by the motor (212), so that the white vinegar or citric acid powder and the hot water are fully mixed; S2: the disc (213) and the stirring rod (214) are driven to rotate by the motor (212), so that the white vinegar or citric acid powder and the hot water are fully mixed; S3: the valve at the upper end of the conveying pipe (215) is opened, at this time, the mixed solution enters the inside of each group of pipelines (216) through the conveying pipe (215), when the inside of the pipeline (216) is filled with the mixed solution, and the mixed solution stays in the pipeline (216) for 1-3 hours; S4: when the scale removal is completed, the upper end valve of the conveying pipe (215) is closed, the lower end valve is opened, and the water flushing device is used to inject clean water into the inside of the pipeline (216), at this time, the clean water flushes the mixed solution into the inside of the conveying pipe (215), and then into the inside of the storage box (217), which is convenient for subsequent processing.

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