Device for efficiently purifying flue gas and recovering waste heat of roasting furnace

Abstract

The utility model relates to the technical field of recovery devices, and discloses a roasting furnace flue gas efficient purification and waste heat recovery device which comprises a waste heat recovery box and further comprises a limiting frame and a waste heat recovery assembly. A connecting pipe used for conveying flue gas in the roasting furnace body into the waste heat recycling box is fixedly connected between the roasting furnace body and the waste heat recycling box, and a waste heat recycling assembly used for recycling waste heat of the flue gas is arranged at the top of the waste heat recycling box. An activated carbon purification plate is aligned to a corresponding groove of the waste heat recovery box and inserted, the activated carbon purification plate is clamped in a groove of a mounting plate through an arc end of a clamping block, the activated carbon purification plate is mounted and fixed, the sealing performance of the waste heat recovery box is improved through a sealing gasket, the disassembly and assembly convenience of the activated carbon purification plate is improved, and the service life of the waste heat recovery box is prolonged. The time cost for replacing or cleaning the activated carbon purification plate is reduced, and the using effect of the equipment is improved.

Description

Technical Field

[0001] This utility model relates to the field of recycling device technology, and in particular to a device for efficient purification and waste heat recovery of flue gas from a roasting furnace. Background Technology

[0002] A roasting furnace is an industrial equipment used for high-temperature heating of solid materials. It is mainly used to complete physicochemical reactions without melting the materials. A roasting furnace waste heat recovery device is an energy-saving device specifically designed to recover residual heat energy from exhaust gas, smoke, or high-temperature solid waste residue emitted from a roasting furnace. It converts waste heat energy into usable energy through heat exchange technology. A roasting furnace flue gas high-efficiency purification and waste heat recovery device is an environmentally friendly and energy-saving device that integrates flue gas purification and heat recovery functions. It is mainly used to treat high-temperature flue gas generated by industrial kilns such as roasting furnaces.

[0003] In the existing technology, the filter plates used in the current recovery device are fixed by bolts, which requires tightening and loosening the bolts one by one. This greatly increases the time cost of replacing or cleaning the filter plates, affects the continuous operation efficiency of the equipment, and reduces the effectiveness of the equipment. Therefore, it is necessary to improve the calcining furnace flue gas high-efficiency purification and waste heat recovery device to solve the above problems. Utility Model Content

[0004] To overcome the problem that the filter plates in the current recycling devices are fixed with bolts, requiring each bolt to be tightened or loosened individually, which greatly increases the time cost of replacing or cleaning the filter plates and reduces the effectiveness of the equipment.

[0005] The technical solution of this utility model is as follows: a high-efficiency purification and waste heat recovery device for calcining furnace flue gas, including a waste heat recovery box, a limiting frame, and a waste heat recovery component. The left end of the waste heat recovery box is provided with a calcining furnace body. A connecting pipe is fixedly connected between the calcining furnace body and the waste heat recovery box to transport the flue gas inside the calcining furnace body to the waste heat recovery box. The top of the waste heat recovery box is provided with a waste heat recovery component to recover the waste heat of the flue gas. The inside of the waste heat recovery box is fixedly connected with a limiting frame. An activated carbon purification plate is provided inside the limiting frame. An installation plate is fixedly connected to the front end of the activated carbon purification plate. A sealing gasket is fixedly connected to the rear end of the installation plate. The activated carbon purification plate is located inside the sealing gasket. A fixing frame is fixedly connected to the front end of the waste heat recovery box. A locking block is slidably connected inside the fixing frame and engages with the inside of the installation plate.

[0006] Preferably, the waste heat recovery box has a matching groove at the corresponding position of the activated carbon purification plate, and the activated carbon purification plate is placed in the groove of the waste heat recovery box.

[0007] Preferably, three sets of activated carbon purification plates are provided, and the three sets of activated carbon purification plates are distributed from top to bottom inside the waste heat recovery box.

[0008] Preferably, the front end of the mounting plate is fixedly connected to a handle, the top of the locking block is fixedly connected to an optical axis, the optical axis is slidably connected inside the fixing frame, a spring is fixedly connected between the locking block and the fixing frame, a connecting block is fixedly connected to the outside of the optical axis, and a toggle block is fixedly connected to the top of the connecting block.

[0009] Preferably, the mounting plate has a matching groove at the corresponding position of the locking block, and the locking block can be locked into the groove of the mounting plate.

[0010] Preferably, the fixing frame has a matching groove at the corresponding position of the card block, and the card block slides in the groove of the fixing frame.

[0011] Preferably, the waste heat recovery assembly includes a support frame, which is fixedly connected to the top of the waste heat recovery box. A hot water tank is fixedly connected to the top of the support frame. A serpentine heat exchange tube is fixedly connected inside the hot water tank. A first delivery pipe is fixedly connected between the serpentine heat exchange tube and the waste heat recovery box. The first delivery pipe is fixedly connected inside the hot water tank. A second delivery pipe is fixedly connected to the top of the serpentine heat exchange tube. The second delivery pipe is fixedly connected inside the hot water tank. An inlet pipe is fixedly connected inside the top of the hot water tank. An outlet pipe is fixedly connected inside the right end of the hot water tank.

[0012] The beneficial effects of this utility model are as follows: Compared with the filter plates used in current recovery devices that are fixed by bolts, requiring each bolt to be tightened and loosened individually, this invention aligns the activated carbon purification plate with the corresponding slot in the waste heat recovery box and inserts it. The plate is then secured by the arc end of the locking block, which engages with the slot in the mounting plate. The sealing gasket improves the sealing performance of the waste heat recovery box, enhances the ease of installation and removal of the activated carbon purification plate, reduces the time cost of replacing or cleaning the activated carbon purification plate, and improves the equipment's performance. This avoids the problem of significantly increasing the time cost of replacing or cleaning filter plates and reducing the overall effectiveness of the equipment. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the activated carbon purification plate structure of this utility model;

[0015] Figure 3 This is a schematic diagram of the sealing gasket structure of this utility model;

[0016] Figure 4 This is a schematic diagram of the card block structure of this utility model;

[0017] Figure 5 This is a schematic diagram of the waste heat recovery component of this utility model.

[0018] Explanation of reference numerals in the attached drawings: 1. Waste heat recovery box; 21. Limiting frame; 22. Activated carbon purification plate; 23. Mounting plate; 24. Handle; 25. Fixing frame; 26. Locking block; 27. Optical axis; 28. Spring; 29. ​​Connecting block; 210. Pushing block; 211. Sealing gasket; 31. Support frame; 32. Hot water tank; 33. Serpentine heat exchange tube; 34. First conveying pipe; 35. Second conveying pipe; 36. Water inlet pipe; 37. Water outlet pipe; 4. Roasting furnace body; 5. Connecting pipe. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Please see Figure 1 - Figure 5This utility model provides an embodiment of a high-efficiency purification and waste heat recovery device for calcining furnace flue gas, including a waste heat recovery box 1, a limiting frame 21, and a waste heat recovery component. A calcining furnace body 4 is located at the left end of the waste heat recovery box 1. A connecting pipe 5 is fixedly connected between the calcining furnace body 4 and the waste heat recovery box 1 to transport the flue gas inside the calcining furnace body 4 to the waste heat recovery box 1. A waste heat recovery component for recovering waste heat from the flue gas is located at the top of the waste heat recovery box 1. The limiting frame 21 is fixedly connected inside the waste heat recovery box 1. An activated carbon purification plate 22 is located inside the limiting frame 21. An installation plate 23 is fixedly connected to the front end of the activated carbon purification plate 22, and a sealing gasket 211 is fixedly connected to the rear end of the installation plate 23. The activated carbon purification plate 22 is positioned within the sealing... Inside the gasket 211, a fixed frame 25 is fixedly connected to the front end of the waste heat recovery box 1. A locking block 26 is slidably connected inside the fixed frame 25, and the locking block 26 engages with the inside of the mounting plate 23. By aligning the activated carbon purification plate 22 with the corresponding slot in the waste heat recovery box 1 and inserting it, the plate passes through the arc end of the locking block 26, causing the locking block 26 to engage with the slot in the mounting plate 23, thus fixing the activated carbon purification plate 22 in place. The sealing gasket 211 improves the sealing performance of the waste heat recovery box 1, enhances the ease of disassembly and assembly of the activated carbon purification plate 22, reduces the time cost of replacing or cleaning the activated carbon purification plate 22, and improves the equipment's performance. The filtered flue gas from the waste heat recovery component enters the serpentine heat exchange tube 33 through the first conveying pipe 34. Flue gas can heat the water in the hot water tank 32 through the serpentine heat exchange tube 33, thus utilizing the heat. The flue gas can then be discharged through the second conveying pipe 35. Water to be heated can be added to the hot water tank 32 through the inlet pipe 36, and the heated water can be discharged through the outlet pipe 37. This improves the recovery efficiency of the flue gas from the roasting furnace body 4, enhancing the equipment's performance. The waste heat recovery box 1 has a corresponding groove at the position of the activated carbon purification plate 22. The activated carbon purification plate 22 is placed in the groove of the waste heat recovery box 1. During installation, the activated carbon purification plate 22 is aligned with the groove of the waste heat recovery box 1 and inserted into the waste heat recovery box 1. The mounting frame 21 is used to facilitate the installation and fixation of the activated carbon purification plate 22, improving the ease of installation and removal of the activated carbon purification plate 22. Three sets of activated carbon purification plates 22 are arranged from top to bottom inside the waste heat recovery box 1. These three sets of activated carbon purification plates 22 can adsorb dust particles mixed in the flue gas, filtering the flue gas and improving the filtration effect. This enhances the purification effect on the flue gas inside the roasting furnace body 4, improving the stability of the device. A handle 24 is fixedly connected to the front end of the mounting plate 23, and an optical axis 27 is fixedly connected to the top of the locking block 26. The optical axis 27 is slidably connected inside the fixing frame 25. A spring 28 is fixedly connected between the locking block 26 and the fixing frame 25.A connecting block 29 is fixedly connected to the outside of the optical axis 27. A lever 210 is fixedly connected to the top of the connecting block 29. By aligning the activated carbon purification plate 22 with the corresponding slot in the waste heat recovery box 1 and inserting it, the plate passes through the arc end of the locking block 26. When the sealing gasket 211 contacts the waste heat recovery box 1, the locking block 26 engages with the slot in the mounting plate 23, thus fixing the activated carbon purification plate 22 in place. The sealing gasket 211 improves the sealing performance of the waste heat recovery box 1. When it is necessary to disassemble the activated carbon purification plate 22, simply push the lever 210 upwards to pull the activated carbon purification plate 22 out of the waste heat recovery box 1, thereby improving the sealing performance of the activated carbon purification plate 22. The ease of installation and removal of the activated carbon purification plate 22 reduces the time cost of replacing or cleaning it, thus improving the equipment's performance. The mounting plate 23 has a corresponding groove at the position of the locking block 26, and the locking block 26 can be engaged within this groove, facilitating the installation and fixing of the activated carbon purification plate 22 and further reducing the time cost of replacing or cleaning it. The fixing frame 25 also has a corresponding groove at the position of the locking block 26, allowing the locking block 26 to slide within it, thus limiting its movement and ensuring it can only move linearly, thereby improving the engagement stability of the locking block 26.

[0021] Please see Figure 1 , Figure 5 In this embodiment, the waste heat recovery assembly includes a support frame 31, which is fixedly connected to the top of the waste heat recovery box 1. A hot water tank 32 is fixedly connected to the top of the support frame 31. A serpentine heat exchange tube 33 is fixedly connected inside the hot water tank 32. A first conveying pipe 34 is fixedly connected between the serpentine heat exchange tube 33 and the waste heat recovery box 1. The first conveying pipe 34 is fixedly connected inside the hot water tank 32. A second conveying pipe 35 is fixedly connected to the top of the serpentine heat exchange tube 33. The second conveying pipe 35 is fixedly connected inside the hot water tank 32. A water inlet pipe 36 is fixedly connected to the inside of the top of the hot water tank 32. The hot water tank 32 is fixedly connected to the outlet pipe 37 on the right side. The flue gas filtered by the waste heat recovery component enters the serpentine heat exchange tube 33 through the first conveying pipe 34. The flue gas can heat the water in the hot water tank 32 through the serpentine heat exchange tube 33, so that the heat is utilized. Then the flue gas can be discharged through the second conveying pipe 35. Water that needs to be heated can be added to the inside of the hot water tank 32 through the inlet pipe 36. The heated water inside the hot water tank 32 can be discharged through the outlet pipe 37, which improves the recovery efficiency of the flue gas of the roasting furnace body 4 and improves the use effect of the equipment.

[0022] During operation, the flue gas generated inside the roasting furnace body 4 enters the waste heat recovery box 1 through the connecting pipe 5. Three sets of activated carbon purification plates 22 adsorb the dust particles mixed in the flue gas, filtering it. The filtered flue gas then enters the serpentine heat exchange tube 33 through the first conveying pipe 34. The flue gas heats the water in the hot water tank 32 through the serpentine heat exchange tube 33, utilizing the heat. The flue gas is then discharged through the second conveying pipe 35. Water to be heated is added to the hot water tank 32 through the inlet pipe 36, and the heated water is discharged through the outlet pipe 37. When the activated carbon purification plates 22 need to be disassembled, replaced, or cleaned, the lever 210 is moved upwards, causing the connecting block 29 to drive the four sets of optical axes 27 upwards as a whole. The movable locking block 26 is moved away from the groove of the mounting plate 23, allowing the activated carbon purification plate 22 to be pulled out from the inside of the waste heat recovery box 1 via the handle 24, making it convenient to clean and replace the activated carbon purification plate 22. When installing the activated carbon purification plate 22, by aligning the activated carbon purification plate 22 with the limiting frame 21 and inserting it, the plate 22 passes through the arc end of the locking block 26, causing the plate 22 to contact the mounting plate 23 at the arc end, which moves the locking block 26 upward, compressing the spring 28. When the sealing gasket 211 contacts the waste heat recovery box 1, the spring 28, through its own elasticity, moves the locking block 26 downward, locking the locking block 26 into the groove of the mounting plate 23, thus installing and fixing the activated carbon purification plate 22. The sealing gasket 211 improves the sealing performance of the waste heat recovery box 1, thereby enhancing the practicality of the device.

[0023] Through the above steps, by aligning the activated carbon purification plate 22 with the corresponding slot of the waste heat recovery box 1 and inserting it, the plate 22 is fixed in place by the arc end of the locking block 26, which is then engaged in the slot of the mounting plate 23. The sealing gasket 211 improves the sealing performance of the waste heat recovery box 1 and enhances the ease of disassembly and assembly of the activated carbon purification plate 22. This addresses the problem of significantly increasing the time cost of filter plate replacement or cleaning, which reduces the effectiveness of the equipment.

Claims

1. A high-efficiency purification and waste heat recovery device for calcining furnace flue gas, comprising a waste heat recovery box (1), characterized in that: It also includes a limiting frame (21) and a waste heat recovery assembly. A roasting furnace body (4) is provided at the left end of the waste heat recovery box (1). A connecting pipe (5) is fixedly connected between the roasting furnace body (4) and the waste heat recovery box (1) to transport the flue gas inside the roasting furnace body (4) to the inside of the waste heat recovery box (1). A waste heat recovery assembly for recovering the waste heat of the flue gas is provided at the top of the waste heat recovery box (1). A limiting frame (21) is fixedly connected inside the waste heat recovery box (1). An activated carbon purification plate (22) is installed inside the frame (21). An installation plate (23) is fixedly connected to the front end of the activated carbon purification plate (22). A sealing gasket (211) is fixedly connected to the rear end of the installation plate (23). The activated carbon purification plate (22) is installed inside the sealing gasket (211). A fixed frame (25) is fixedly connected to the front end of the waste heat recovery box (1). A locking block (26) is slidably connected inside the fixed frame (25). The locking block (26) is locked inside the installation plate (23).

2. The high-efficiency purification and waste heat recovery device for calcining furnace flue gas according to claim 1, characterized in that: The waste heat recovery box (1) has a matching groove at the corresponding position of the activated carbon purification plate (22), and the activated carbon purification plate (22) is set in the groove of the waste heat recovery box (1).

3. The high-efficiency purification and waste heat recovery device for calcining furnace flue gas according to claim 1, characterized in that: There are three sets of activated carbon purification plates (22), which are distributed from top to bottom inside the waste heat recovery box (1).

4. The high-efficiency purification and waste heat recovery device for calcining furnace flue gas according to claim 1, characterized in that: The front end of the mounting plate (23) is fixedly connected to a handle (24), the top of the locking block (26) is fixedly connected to an optical axis (27), the optical axis (27) is slidably connected inside the fixing frame (25), a spring (28) is fixedly connected between the locking block (26) and the fixing frame (25), a connecting block (29) is fixedly connected to the outside of the optical axis (27), and a toggle block (210) is fixedly connected to the top of the connecting block (29).

5. The high-efficiency purification and waste heat recovery device for calcining furnace flue gas according to claim 4, characterized in that: The mounting plate (23) has a matching groove at the corresponding position of the locking block (26), and the locking block (26) can be locked into the groove of the mounting plate (23).

6. The high-efficiency purification and waste heat recovery device for calcining furnace flue gas according to claim 4, characterized in that: The fixed frame (25) has a matching groove at the corresponding position of the card block (26), and the card block (26) slides in the groove of the fixed frame (25).

7. The high-efficiency purification and waste heat recovery device for calcining furnace flue gas according to claim 1, characterized in that: The waste heat recovery assembly includes a support frame (31), which is fixedly connected to the top of the waste heat recovery box (1). A hot water tank (32) is fixedly connected to the top of the support frame (31). A serpentine heat exchange tube (33) is fixedly connected inside the hot water tank (32). A first delivery pipe (34) is fixedly connected between the serpentine heat exchange tube (33) and the waste heat recovery box (1). The first delivery pipe (34) is fixedly connected inside the hot water tank (32). A second delivery pipe (35) is fixedly connected to the top of the serpentine heat exchange tube (33). The second delivery pipe (35) is fixedly connected inside the hot water tank (32). An inlet pipe (36) is fixedly connected inside the top of the hot water tank (32). An outlet pipe (37) is fixedly connected inside the right end of the hot water tank (32).

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