Energy-saving type coke oven flue waste gas waste heat recovery mechanism

Abstract

The utility model discloses an energy-saving type coke oven flue waste gas waste heat recovery mechanism, and belongs to the field of waste heat recovery. The device comprises a tank body, an air inlet pipe is fixedly mounted at the top of the tank body, a heat exchange pipe is fixedly mounted in the tank body, and a cleaning mechanism is fixedly mounted in the tank body; waste heat of gas in the heat exchange pipe is absorbed through liquid in the tank body, and in the absorption process, the rotating fan blades rotate to drive the liquid at the edge of the tank body to move towards the heat exchange pipe at the same time, so that the temperature gradient difference in the tank body is reduced, flowing of the liquid in the tank body is promoted, and the heat exchange efficiency is effectively improved; meanwhile, when the surface of the heat exchange pipe needs to be cleaned, scale on the surface of the heat exchange pipe is broken through high-frequency vibration, so that rapid cleaning of the heat exchange pipe is achieved, a recycling mechanism does not need to be disassembled in the process, the downtime is short, meanwhile, rotating fan blades rotate, large scale is broken through the rotating fan blades, follow-up discharging is facilitated, and a liquid discharging pipe is prevented from being blocked.

Description

Technical Field

[0001] This utility model relates to the field of waste heat recovery, and in particular to an energy-saving coke oven flue gas waste heat recovery mechanism. Background Technology

[0002] A coke oven flue gas waste heat recovery mechanism refers to a device or system that uses certain technical means to recover and utilize the waste heat of the waste gas in the coke oven flue. The main purpose of this recovery process is to improve energy utilization efficiency, reduce energy consumption and emissions, and meet environmental protection requirements by reducing the temperature of the waste gas and extracting the heat from it.

[0003] However, in the existing waste heat recovery mechanism, the liquid temperature near the heat exchange tube is usually high during use, which causes a temperature difference inside the recovery mechanism, i.e. uneven heat conduction, and affects the heat exchange efficiency of the recovery mechanism.

[0004] Furthermore, scale easily forms on the surface of heat exchange tubes after long-term use. As scale accumulates, the heat exchange efficiency of the heat exchange tubes gradually decreases. At this point, it is necessary to shut down the machine to clean the heat exchange tubes. However, the heat exchange tubes are usually located inside the waste heat recovery mechanism, which makes cleaning very inconvenient and results in a long downtime, affecting the normal operation of the recovery mechanism.

[0005] To address the aforementioned technical shortcomings, a solution is proposed. Utility Model Content

[0006] The purpose of this utility model is to provide an energy-saving coke oven flue gas waste heat recovery mechanism to solve the technical defects mentioned in the background art.

[0007] The purpose of this utility model can be achieved through the following technical solution: an energy-saving coke oven flue gas waste heat recovery mechanism, including a tank, an air inlet pipe fixedly installed on the top of the tank, a heat exchange pipe fixedly installed in the tank, and a cleaning mechanism fixedly installed inside the tank.

[0008] The cleaning mechanism includes an ultrasonic generator, a rotating fan blade, and a drain pipe. The ultrasonic generator is located on one side of the heat exchange tube. Multiple ultrasonic generators are provided and are evenly distributed on the inner wall of the tank.

[0009] The rotating fan blades are movably installed inside the tank, located on both sides of the heat exchange tube, while the drain pipe is fixedly installed at the bottom of the tank.

[0010] Preferably, a motor is fixedly installed on both sides of the tank, and a rotating block is fixedly installed at the output end of the motor. A turbulence groove is opened on one side of the rotating block.

[0011] Preferably, the rotating fan blades are fixedly installed on the rotating block, and multiple rotating fan blades are provided. The multiple rotating fan blades are evenly distributed on the rotating block, and the rotating fan blades are tilted at an angle of 15°-45°.

[0012] Preferably, a guide channel is provided at the bottom of the tank, the drain pipe is located at the center of the guide channel, and the cross-section of the guide channel is trapezoidal.

[0013] Preferably, a sealing plate is movably installed on one side of the tank, one end of the sealing plate is movably connected to the tank via a rotating shaft, and a locking rod is fixedly installed on the side of the tank away from the rotating shaft.

[0014] Preferably, a connecting rod is fixedly installed on the side of the sealing plate away from the rotating shaft, a locking block is movably installed on the connecting rod, a locking groove is opened in the locking block, the locking rod is located in the locking groove, a connecting plate is fixedly installed on one side of the sealing plate, a spring is fixedly installed at the bottom of the connecting plate, and one end of the spring is fixedly connected to the locking block.

[0015] The beneficial effects of this utility model are as follows:

[0016] (1) This utility model uses the linkage of components such as heat exchange tube and rotating fan blade to allow high-temperature gas to enter the heat exchange tube through the inlet pipe. The liquid in the tank absorbs the residual heat of the gas in the heat exchange tube. During the absorption process, the rotating fan blade rotates, thereby driving the liquid at the edge of the tank to move towards the heat exchange tube, thereby reducing the temperature gradient difference inside the tank and promoting the flow of liquid inside the tank, effectively improving the heat exchange efficiency.

[0017] (2) This utility model uses the linkage of components such as ultrasonic generator, rotating fan blade and drain pipe to start the ultrasonic generator when it is necessary to clean the surface of heat exchange tube. The high-frequency vibration breaks the scale on the surface of heat exchange tube and discharges the scale through the bottom drain pipe, thereby achieving rapid cleaning of heat exchange tube. There is no need to disassemble the recovery mechanism during the process, and the downtime is short. At the same time, the rotating fan blade breaks large pieces of scale, which is convenient for subsequent discharge and avoids clogging the drain pipe. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings;

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of the tank in this utility model;

[0021] Figure 3 This is a schematic diagram of the cleaning mechanism in this utility model;

[0022] Figure 4 This is a schematic diagram of the rotating fan blades in this utility model;

[0023] Figure 5 This is a schematic diagram of the locking block in this utility model.

[0024] Legend: 1. Tank body; 11. Air inlet pipe; 12. Heat exchange pipe; 2. Cleaning mechanism; 21. Ultrasonic generator; 22. Rotating fan blade; 23. Drain pipe; 24. Rotating block; 25. Turbulence channel; 26. Guide channel; 27. Sealing plate; 28. Locking rod; 29. ​​Connecting rod; 30. Locking block; 31. Connecting plate. Detailed Implementation

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

[0026] Example 1:

[0027] This embodiment addresses the problem in existing waste heat recovery mechanisms where the liquid temperature near the heat exchange tube is typically high during operation. This results in a temperature difference within the recovery mechanism, i.e., uneven heat conduction, which affects the heat exchange efficiency of the recovery mechanism.

[0028] Please see Figure 1 - Figure 3 As shown, this embodiment is an energy-saving coke oven flue gas waste heat recovery mechanism, including a tank 1, an air inlet pipe 11 fixedly installed on the top of the tank 1, a heat exchange pipe 12 fixedly installed in the tank 1, and a cleaning mechanism 2 fixedly installed inside the tank 1.

[0029] The cleaning mechanism 2 includes a rotating fan blade 22 and a drain pipe 23. The rotating fan blade 22 is movably installed in the tank body 1 and is located on both sides of the heat exchange tube 12. The drain pipe 23 is fixedly installed at the bottom of the tank body 1. Motors are fixedly installed on both sides of the tank body 1. A rotating block 24 is fixedly installed at the output end of the motor. A turbulence groove 25 is provided on one side of the rotating block 24. When the motor drives the rotating block 24 to rotate, the mixing efficiency of the liquid is improved by the setting of the turbulence groove 25.

[0030] Rotating fan blades 22 are fixedly installed on rotating block 24. Multiple rotating fan blades 22 are provided and evenly distributed on rotating block 24. The rotating fan blades 22 are inclined and the inclination angle is 15°-45°. In this embodiment, the inclination angle of rotating fan blades 22 is 25°.

[0031] High-temperature gas enters the heat exchange tube 12 through the inlet pipe 11. The liquid in the tank 1 absorbs the residual heat of the gas in the heat exchange tube 12. During the absorption process, the fan blade 22 rotates, which in turn drives the liquid at the edge of the tank 1 to move towards the heat exchange tube 12. This reduces the temperature gradient difference inside the tank 1 and promotes the flow of liquid inside the tank 1, effectively improving the heat exchange efficiency.

[0032] Example 2:

[0033] This embodiment addresses the problem that scale easily forms on the surface of the heat exchange tube 12 during long-term use. As scale accumulates, the heat exchange efficiency of the heat exchange tube gradually decreases, requiring the machine to be shut down for cleaning. However, the heat exchange tube is usually located inside the waste heat recovery mechanism, making cleaning very inconvenient and resulting in long downtime, which affects the normal operation of the recovery mechanism.

[0034] Please see Figure 4 - Figure 5 As shown, this utility model also includes an ultrasonic generator 21, which is located on one side of the heat exchange tube 12. Multiple ultrasonic generators 21 are provided and are evenly distributed on the inner wall of the tank 1. By providing multiple ultrasonic generators 21, the cleaning efficiency of the heat exchange tube 12 is ensured.

[0035] A guide channel 26 is provided at the bottom of the tank 1, and the drain pipe 23 is located at the center of the guide channel 26. The cross-section of the guide channel 26 is trapezoidal. After the scale treatment is completed, the drain pipe 23 is opened, and the liquid is discharged through the guide channel 26 under the action of gravity. The water flow is guided by the conical guide channel 26 to improve the liquid discharge efficiency, that is, to improve the cleaning efficiency of the heat exchange tube 12.

[0036] When it is necessary to clean the surface of the heat exchange tube 12, the ultrasonic generator 21 is activated to break up the scale on the surface of the heat exchange tube 12 through high-frequency vibration, and the scale is discharged through the bottom drain pipe 23, thereby achieving rapid cleaning of the heat exchange tube 12. During the process, there is no need to disassemble the recovery mechanism, and the downtime is short. At the same time, the fan blade 22 is rotated to break up large pieces of scale, which is convenient for subsequent discharge and avoids clogging of the drain pipe 23.

[0037] A sealing plate 27 is movably installed on one side of the tank body 1. One end of the sealing plate 27 is movably connected to the tank body 1 via a rotating shaft. A locking rod 28 is fixedly installed on the side of the tank body 1 away from the rotating shaft. A connecting rod 29 is fixedly installed on the side of the sealing plate 27 away from the rotating shaft. A locking block 30 is movably installed on the connecting rod 29. A locking groove is opened in the locking block 30. The locking rod 28 is located in the locking groove. A connecting plate 31 is fixedly installed on one side of the sealing plate 27. A spring is fixedly installed at the bottom of the connecting plate 31. One end of the spring is fixedly connected to the locking block 30.

[0038] In the initial state, the sealing plate 27 is attached to the tank body 1. At this time, the locking rod 28 is fixedly connected to the locking groove. The sealing plate 27 and the tank body 1 are fixedly connected by the locking block 30 and the locking rod 28. When maintenance or repair of the inside of the tank body 1 is required, it is only necessary to pull the locking block 30 to separate it from the locking groove. At this time, the sealing plate 27 can be pulled to open the tank body 1. The structure is simple, convenient and quick.

[0039] Combining Embodiments 1 and 2, the liquid in tank 1 absorbs the residual heat of the gas in heat exchange tube 12. During the absorption process, the fan blade 22 rotates, which in turn drives the liquid at the edge of tank 1 to move towards heat exchange tube 12, thereby reducing the temperature gradient difference inside tank 1 and promoting the flow of liquid inside tank 1, effectively improving heat exchange efficiency. At the same time, when it is necessary to clean the surface of heat exchange tube 12, the ultrasonic generator 21 is activated to break up the scale on the surface of heat exchange tube 12 through high-frequency vibration, and the scale is discharged through the bottom drain pipe 23, thereby achieving rapid cleaning of heat exchange tube 12. The recovery mechanism does not need to be disassembled during the process, and the downtime is short. At the same time, the fan blade 22 rotates, which breaks up large pieces of scale, making it easier to discharge later and avoiding clogging of drain pipe 23.

[0040] The working process and principle of this utility model are as follows:

[0041] First, the liquid in tank 1 absorbs the residual heat of the gas in heat exchange tube 12. During the absorption process, the fan blade 22 rotates, which in turn drives the liquid at the edge of tank 1 to move towards heat exchange tube 12, thereby reducing the temperature gradient difference inside tank 1 and promoting the flow of liquid inside tank 1, effectively improving the heat exchange efficiency.

[0042] Furthermore, when it is necessary to clean the surface of the heat exchange tube 12, the ultrasonic generator 21 is activated to break up the scale on the surface of the heat exchange tube 12 through high-frequency vibration, and the scale is discharged through the bottom drain pipe 23, thereby achieving rapid cleaning of the heat exchange tube 12. During the process, there is no need to disassemble the recovery mechanism, and the downtime is short. At the same time, the fan blade 22 is rotated to break up large pieces of scale, which is convenient for subsequent discharge and avoids clogging of the drain pipe 23.

[0043] That is, the present invention, through the cleaning mechanism 2, not only effectively improves the heat exchange efficiency, but also achieves rapid and efficient cleaning of the heat exchange tube 12.

[0044] The above description is merely an example and illustration of the structure of this utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of this utility model.

[0045] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0046] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. An energy-saving coke oven flue gas waste heat recovery mechanism, comprising a tank (1), characterized in that, An air inlet pipe (11) is fixedly installed on the top of the tank (1), a heat exchange pipe (12) is fixedly installed in the tank (1), and a cleaning mechanism (2) is fixedly installed inside the tank (1). The cleaning mechanism (2) includes an ultrasonic generator (21), a rotating fan blade (22) and a drain pipe (23). The ultrasonic generator (21) is located on one side of the heat exchange tube (12). Multiple ultrasonic generators (21) are provided, and the multiple ultrasonic generators (21) are evenly spaced on the inner wall of the tank (1). The rotating fan blade (22) is movably installed in the tank body (1), the rotating fan blade (22) is located on both sides of the heat exchange tube (12), and the drain pipe (23) is fixedly installed at the bottom of the tank body (1).

2. The energy-saving coke oven flue gas waste heat recovery mechanism according to claim 1, characterized in that, Motors are fixedly installed on both sides of the tank (1), and a rotating block (24) is fixedly installed at the output end of the motor. A turbulence groove (25) is opened on one side of the rotating block (24).

3. The energy-saving coke oven flue gas waste heat recovery mechanism according to claim 2, characterized in that, The rotating fan blade (22) is fixedly installed on the rotating block (24). There are multiple rotating fan blades (22), which are evenly distributed on the rotating block (24). The rotating fan blades (22) are inclined, with an inclination angle of 15°-45°.

4. The energy-saving coke oven flue gas waste heat recovery mechanism according to claim 3, characterized in that, The tank (1) has a flow guide groove (26) at the bottom, and the drain pipe (23) is located at the center of the flow guide groove (26). The cross-section of the flow guide groove (26) is trapezoidal.

5. The energy-saving coke oven flue gas waste heat recovery mechanism according to claim 1, characterized in that, A sealing plate (27) is movably installed on one side of the tank (1). One end of the sealing plate (27) is movably connected to the tank (1) via a rotating shaft. A locking rod (28) is fixedly installed on the side of the tank (1) away from the rotating shaft.

6. The energy-saving coke oven flue gas waste heat recovery mechanism according to claim 5, characterized in that, A connecting rod (29) is fixedly installed on the side of the sealing plate (27) away from the rotating shaft. A locking block (30) is movably installed on the connecting rod (29). A locking groove is opened in the locking block (30). The locking rod (28) is located in the locking groove. A connecting plate (31) is fixedly installed on one side of the sealing plate (27). A spring is fixedly installed at the bottom of the connecting plate (31). One end of the spring is fixedly connected to the locking block (30).

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