Lime kiln high-temperature flue gas recycling device

Abstract

The invention discloses a lime kiln high-temperature flue gas recycling device, and belongs to the technical field of waste heat utilization, the lime kiln high-temperature flue gas recycling device comprises a water tank, support legs are fixedly connected below two sides of the water tank, a slag discharge pipe is fixedly communicated below the water tank, a heat conduction pipe is fixedly mounted in the water tank, and one end of the heat conduction pipe is fixedly communicated with an exhaust pipe; according to the flue gas treatment device, the filter assembly is arranged, flue gas can be conveniently filtered, and therefore the situation that impurities in the flue gas enter the heat conduction pipe and accumulate for a long time, and use of the heat conduction pipe is affected is prevented; a switch assembly is arranged, so that the water tank is convenient to open, the surface of the heat conduction pipe is convenient to clean, and the situation that due to long-time accumulation of water scale, use of the heat conduction pipe is affected is prevented.

Description

Technical Field

[0001] This invention belongs to the field of waste heat utilization technology, specifically relating to a high-temperature flue gas recycling device for lime kilns. Background Technology

[0002] Waste heat recovery from flue gas refers to the process of recovering the heat energy contained in high-temperature flue gas emitted during industrial production through technological means and converting it into usable energy. This technology is widely used in industries such as steel, metallurgy, petrochemicals, and thermal power, aiming to improve energy efficiency, reduce energy waste, and lower environmental pollution.

[0003] Existing high-temperature flue gas recycling devices for lime kilns use waste heat from the flue gas to heat water in a water tank for recycling. However, this method is not suitable for filtering the flue gas entering the heat pipes. Dust buildup in the flue gas can affect the performance of the heat pipes. Furthermore, with prolonged use, scale can accumulate on the surface of the heat pipes, making it difficult to open the water tank and clean the surface. Summary of the Invention

[0004] To address the problems mentioned in the background section, this invention provides a high-temperature flue gas recycling device for lime kilns, which facilitates flue gas filtration and allows for easy opening of the water tank and cleaning of the heat-conducting pipe surface.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a high-temperature flue gas recycling device for lime kilns, comprising a water tank, support legs fixedly connected to the lower sides of both sides of the water tank, a slag discharge pipe fixedly connected to the lower part of the water tank, a heat-conducting pipe fixedly installed inside the water tank, an exhaust pipe fixedly connected to one end of the heat-conducting pipe, a filter assembly fixedly connected to the air inlet end of the heat-conducting pipe, and a switch assembly provided above the water tank. The filter assembly includes a filter box, which is fixedly connected to one end of the heat-conducting pipe. An activated carbon adsorption mesh is tightly inserted into the lower part of the filter box. A flue gas filter cartridge is installed in the upper part of the filter box. A disassembly assembly is installed in the upper part of the filter box. An air inlet pipe is fixedly connected to the middle of the upper part of the disassembly assembly.

[0006] Preferably, the disassembly assembly includes a disassembly cover, which is located above the filter box. The middle of the upper part of the disassembly cover is fixedly connected to the air inlet pipe, and the middle of the lower part of the disassembly cover is threadedly connected to the flue gas filter cartridge. Fixing screws are inserted into both ends of the disassembly cover and are threadedly connected to the filter box. Connecting rods are fixedly connected to both sides of the lower part of the disassembly cover. A limit screw is inserted into one end of the connecting rod and is threadedly connected to the activated carbon adsorption mesh.

[0007] Preferably, handles are fixedly connected to both sides of the top of the disassembly cover, and soft sleeves are fixedly connected to the surface of the handles.

[0008] Preferably, a rubber sealing gasket is fixedly connected to the lower surface of the disassembly cover.

[0009] Preferably, positioning rods are symmetrically and fixedly connected to both sides below the detachable cover, and positioning holes that are tightly inserted into the positioning rods are opened at both ends above the filter box.

[0010] Preferably, the switch assembly includes an electric telescopic rod, which is fixedly connected to both sides of the water tank. A cover plate is provided above the electric telescopic rod, and the electric telescopic rod and the cover plate are connected by a connecting assembly. A rubber sealing gasket is fixedly connected to the lower surface of the cover plate, and an automatic pressure relief valve is fixedly connected to the middle of the top of the cover plate.

[0011] Preferably, the connecting assembly includes a connecting seat, which is fixedly connected to both sides above the cover plate. A square plug is tightly inserted into one end of the connecting seat below it, and a connecting screw is inserted into one end of the connecting seat. The connecting screw and the square plug are threaded together.

[0012] Preferably, the connecting seat is fixedly connected to both sides with reinforcing ribs, and the bottom of the reinforcing ribs is fixedly connected to the cover plate.

[0013] Compared with the prior art, the beneficial effects of the present invention are: 1. By setting up a filter component, this invention achieves the effect of facilitating the filtration of flue gas, thereby preventing impurities in the flue gas from entering the heat pipe and accumulating over a long period of time, which would affect the use of the heat pipe.

[0014] 2. This invention, by setting up a disassembly and assembly component, achieves the effect of facilitating the disassembly and assembly of the flue gas filter cartridge and activated carbon adsorption mesh, so as to facilitate cleaning or replacement. The design of the handle and soft sleeve makes it easy to remove the disassembly and assembly cover.

[0015] 3. This invention, by setting a switch assembly, achieves the effect of easily opening the water tank and cleaning the surface of the heat-conducting pipe. In use, simply start the electric telescopic rod to open the cover and clean the heat-conducting pipe inside the water tank. The connecting assembly makes it easy to disassemble the cover and the electric telescopic rod if the electric telescopic rod is damaged. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure of the present invention after partial separation and cross-section; Figure 3 This is a cross-sectional structural diagram of the filter component of the present invention; Figure 4 This is a schematic diagram of the structure of the switching assembly of the present invention; Figure 5 This is a cross-sectional structural diagram of the connecting component of the present invention.

[0017] In the diagram: 1. Water tank; 2. Support leg; 3. Slag discharge pipe; 4. Heat conduction pipe; 5. Exhaust pipe; 6. Filter assembly; 61. Filter box; 62. Activated carbon adsorption mesh; 63. Flue gas filter cartridge; 64. Air inlet pipe; 65. Assembly / disassembly assembly; 651. Assembly / disassembly cover; 652. Connecting rod; 653. Limiting screw; 654. Fixing screw; 655. Rubber sealing gasket one; 656. Positioning rod; 657. Handle; 7. Switch assembly; 71. Electric telescopic rod; 72. Cover plate; 73. Rubber sealing gasket two; 74. Connecting assembly; 75. Automatic pressure relief valve; 741. Connecting seat; 742. Square insert; 743. Connecting screw; 744. Reinforcing rib. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Example 1 Please see Figure 1-5 The present invention provides the following technical solution: a high-temperature flue gas recycling device for lime kilns, including a water tank 1, support legs 2 fixedly connected to the lower sides of the water tank 1, a slag discharge pipe 3 fixedly connected to the lower part of the water tank 1, a heat conduction pipe 4 fixedly installed inside the water tank 1, an exhaust pipe 5 fixedly connected to one end of the heat conduction pipe 4, a filter assembly 6 fixedly connected to the air inlet end of the heat conduction pipe 4, and a switch assembly 7 provided above the water tank 1. The filter assembly 6 includes a filter box 61, which is fixedly connected to one end of the heat pipe 4. An activated carbon adsorption mesh 62 is tightly inserted into the lower part of the filter box 61. A flue gas filter cartridge 63 is installed in the upper part of the filter box 61. A disassembly assembly 65 is installed in the upper part of the filter box 61. An air inlet pipe 64 is fixedly connected in the middle of the upper part of the disassembly assembly 65.

[0020] Specifically, the disassembly assembly 65 includes a disassembly cover 651, which is placed on top of the filter box 61. The middle of the upper part of the disassembly cover 651 is fixedly connected to the air inlet pipe 64, and the middle of the lower part of the disassembly cover 651 is threadedly connected to the flue gas filter cartridge 63. Fixing screws 654 are inserted into both ends of the disassembly cover 651, and the fixing screws 654 are threadedly connected to the filter box 61. Connecting rods 652 are fixedly connected to both sides of the lower part of the disassembly cover 651. A limiting screw 653 is inserted into one end of the connecting rod 652, and the limiting screw 653 is threadedly connected to the activated carbon adsorption mesh 62.

[0021] By adopting the above technical solution, the flue gas enters the filter box 61 by connecting the external exhaust hose and the inlet pipe 64 flange. The flue gas is filtered by the flue gas filter cartridge 63, and then purified by the activated carbon adsorption net 62. Finally, it enters the heat pipe 4 to heat the water in the water tank 1. When it is necessary to disassemble, clean or replace the flue gas filter cartridge 63 or the activated carbon adsorption net 62, the fixing screw 654 is unscrewed, and the flue gas filter cartridge 63 and the activated carbon adsorption net 62 can be taken out of the filter box 61 through the disassembly cover 651. Then, the flue gas filter cartridge 63 is unscrewed by the threaded connection, the limiting screw 653 is removed, and the activated carbon adsorption net 62 is removed, so that the flue gas filter cartridge 63 and the activated carbon adsorption net 62 can be cleaned or replaced.

[0022] Specifically, handles 657 are fixedly connected to both sides above the disassembly cover 651, and soft sleeves are fixedly connected to the surface of the handles 657.

[0023] By adopting the above technical solution, the handle 657 is designed to make it easy to remove the cover 651, and the soft cover improves the comfort of use.

[0024] Specifically, a rubber sealing gasket 655 is fixedly connected to the lower surface of the disassembly cover 651.

[0025] By adopting the above technical solution, the rubber sealing gasket 655 facilitates the sealing between the disassembly cover 651 and the filter box 61.

[0026] Specifically, positioning rods 656 are symmetrically and fixedly connected on both sides below the disassembly cover 651, and positioning holes that are tightly inserted into the positioning rods 656 are opened at both ends above the filter box 61.

[0027] By adopting the above technical solution, the positioning rod 656 can easily cooperate with the positioning hole, so as to position it when installing the cover 651.

[0028] In this embodiment, during use: by connecting the external exhaust hose and the flange of the intake pipe 64, the flue gas enters the filter box 61, where it is filtered by the flue gas filter cartridge 63 to remove impurities, then purified by the activated carbon adsorption mesh 62, and finally enters the heat pipe 4 to heat the water in the water tank 1. When it is necessary to disassemble, clean, or replace the flue gas filter cartridge 63 or the activated carbon adsorption mesh 62, the fixing screw 654 is unscrewed, and the flue gas filter cartridge 63 and the activated carbon adsorption mesh 62 can be removed through the disassembly cover 651. Remove the filter cartridge 63 from the filter box 61, then unscrew the threaded connection to remove the flue gas filter cartridge 63 and remove the limiting screw 653 to remove the activated carbon adsorption mesh 62. This allows for the cleaning or replacement of the flue gas filter cartridge 63 and the activated carbon adsorption mesh 62. This makes it easier to filter the flue gas entering the heat conduction pipe 4 during use, preventing the flue gas from adhering to the inner wall of the heat conduction pipe 4 and affecting its use. This structure also allows for easy disassembly and assembly of the flue gas filter cartridge 63 and the activated carbon adsorption mesh 62 for cleaning or replacement.

[0029] Example 2 The difference between this embodiment and embodiment 1 is that, specifically, the switch assembly 7 includes an electric telescopic rod 71, which is fixedly connected to both sides of the water tank 1. A cover plate 72 is provided above the electric telescopic rod 71. The electric telescopic rod 71 and the cover plate 72 are connected by a connecting assembly 74. A rubber sealing gasket 73 is fixedly connected to the lower surface of the cover plate 72. An automatic pressure relief valve 75 is fixedly connected to the middle of the upper part of the cover plate 72.

[0030] By adopting the above technical solution, the electric telescopic rod 71 is activated, which drives the cover plate 72 to move upward, thereby opening the cover plate 72 to facilitate cleaning of the surface of the heat conduction pipe 4 inside the water tank 1. The automatic pressure relief valve 75 facilitates the automatic pressure relief of the water tank 1 when heating.

[0031] Specifically, the connecting component 74 includes a connecting seat 741, which is fixedly connected to both sides above the cover plate 72. A square plug 742 is tightly inserted into one end of the connecting seat 741 below it, and a connecting screw 743 is inserted into one end of the connecting seat 741. The connecting screw 743 and the square plug 742 are threadedly connected.

[0032] By adopting the above technical solution, by unscrewing the connecting screw 743, the contact square plug 742 and the connecting seat 741 are separated, thereby facilitating the separation of the electric telescopic rod 71 fixedly connected below the square plug 742 from the cover plate 72 for independent use.

[0033] Specifically, the connecting seat 741 is fixedly connected to both sides with reinforcing ribs 744, and the bottom of the reinforcing ribs 744 is fixedly connected to the cover plate 72.

[0034] By adopting the above technical solution, the reinforcing rib 744 can effectively strengthen the connection between the connecting seat 741 and the cover plate 72.

[0035] In this embodiment, when in use: the electric telescopic rod 71 is activated, which moves the cover plate 72 upward, thereby opening the cover plate 72 to facilitate cleaning of the surface of the heat-conducting pipe 4 inside the water tank 1. The automatic pressure relief valve 75 allows the water tank 1 to automatically release pressure during heating. By unscrewing the connecting screw 743, the contact square plug 742 and the connecting seat 741 are separated, allowing the electric telescopic rod 71, which is fixedly connected below the square plug 742, to be separated from the cover plate 72 and used independently. This makes it easy to open the water tank 1 and clean the surface of the heat-conducting pipe 4 when using the device.

[0036] Working principle and usage process of the present invention: The present invention is used to recover and utilize high-temperature flue gas from lime kilns. In use, the flue gas pipe is connected to the air inlet pipe 64 of the filter assembly 6 through a high-temperature resistant hose. Then the flue gas enters the filter assembly 6 for filtration, and then enters the heat conduction pipe 4. The heat conduction pipe 4 heats the water in the water tank 1 to facilitate the recycling of the heat from the flue gas. When a large amount of scale adheres to the surface of the heat conduction pipe 4 after long-term use, the top of the water tank 1 is opened through the switch assembly 7, and then the heat conduction pipe 4 is cleaned. Finally, the slag discharge pipe 3 is opened, and the cleaned impurities are discharged from the slag discharge pipe 3.

[0037] When the filter assembly 6 is in use, the flue gas enters the filter box 61 by connecting the external exhaust hose and the flange of the inlet pipe 64. Impurities in the flue gas are filtered through the flue gas filter cartridge 63, and then purified by the activated carbon adsorption mesh 62. Finally, the gas enters the heat pipe 4 to heat the water in the water tank 1. When it is necessary to disassemble, clean, or replace the flue gas filter cartridge 63 or the activated carbon adsorption mesh 62, the fixing screw 654 is unscrewed, allowing the flue gas filter cartridge 63 and the activated carbon adsorption mesh 62 to be removed through the disassembly cover 651. Remove the filter cartridge 63 from the filter box 61, then unscrew the threaded connection to remove the flue gas filter cartridge 63 and remove the limiting screw 653 to remove the activated carbon adsorption mesh 62. This allows for the cleaning or replacement of the flue gas filter cartridge 63 and the activated carbon adsorption mesh 62. This makes it easier to filter the flue gas entering the heat conduction pipe 4 during use, preventing the flue gas from adhering to the inner wall of the heat conduction pipe 4 and affecting its use. This structure also allows for easy disassembly and assembly of the flue gas filter cartridge 63 and the activated carbon adsorption mesh 62 for cleaning or replacement.

[0038] When the switch assembly 7 is in use, the electric telescopic rod 71 is activated, which moves the cover plate 72 upward, thereby opening the cover plate 72 to facilitate cleaning of the surface of the heat-conducting pipe 4 inside the water tank 1. The automatic pressure relief valve 75 allows the water tank 1 to automatically release pressure when heating. By unscrewing the connecting screw 743, the contact square plug 742 and the connecting seat 741 are separated, which allows the electric telescopic rod 71, which is fixedly connected below the square plug 742, to be separated from the cover plate 72 and used independently. This makes it easy to open the water tank 1 and clean the surface of the heat-conducting pipe 4 when the device is in use.

[0039] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-temperature flue gas recycling device for a lime kiln, comprising a water tank (1), with support legs (2) fixedly connected to the lower sides of both sides of the water tank (1), a slag discharge pipe (3) fixedly connected to the lower part of the water tank (1), and a heat-conducting pipe (4) fixedly installed inside the water tank (1), with one end of the heat-conducting pipe (4) fixedly connected to an exhaust pipe (5), characterized in that: The air inlet end of the heat pipe (4) is fixedly connected to the filter assembly (6), and a switch assembly (7) is provided above the water tank (1). The filter assembly (6) includes a filter box (61), which is fixedly connected to one end of the heat pipe (4). An activated carbon adsorption mesh (62) is tightly inserted into the lower part of the filter box (61). A flue gas filter cartridge (63) is installed in the upper part of the filter box (61). A disassembly assembly (65) is installed in the upper part of the filter box (61). An air inlet pipe (64) is fixedly connected in the middle of the upper part of the disassembly assembly (65).

2. The high-temperature flue gas recycling device for lime kilns according to claim 1, characterized in that: The disassembly assembly (65) includes a disassembly cover (651), which is placed on top of the filter box (61). The middle part of the top of the disassembly cover (651) is fixedly connected to the air inlet pipe (64), and the middle part of the bottom of the disassembly cover (651) is threadedly connected to the flue gas filter cartridge (63). Fixing screws (654) are inserted into both ends of the disassembly cover (651), and the fixing screws (654) are threadedly connected to the filter box (61). Connecting rods (652) are fixedly connected to both sides of the bottom of the disassembly cover (651), and a limiting screw (653) is inserted into one end of the connecting rod (652), and the limiting screw (653) is threadedly connected to the activated carbon adsorption mesh (62).

3. The high-temperature flue gas recycling device for lime kilns according to claim 2, characterized in that: Handles (657) are fixedly connected to both sides above the disassembly cover (651), and soft sleeves are fixedly connected to the surface of the handles (657).

4. The high-temperature flue gas recycling device for lime kilns according to claim 2, characterized in that: A rubber sealing gasket (655) is fixedly connected to the lower surface of the disassembly cover (651).

5. The high-temperature flue gas recycling device for lime kilns according to claim 2, characterized in that: The two sides below the disassembly cover (651) are symmetrically connected with positioning rods (656), and the two ends above the filter box (61) are provided with positioning holes that are tightly inserted into the positioning rods (656).

6. The high-temperature flue gas recycling device for lime kilns according to claim 1, characterized in that: The switch assembly (7) includes an electric telescopic rod (71), which is fixedly connected to both sides of the water tank (1). A cover plate (72) is provided above the electric telescopic rod (71). The electric telescopic rod (71) and the cover plate (72) are connected by a connecting assembly (74). A rubber sealing gasket (73) is fixedly connected to the lower surface of the cover plate (72). An automatic pressure relief valve (75) is fixedly connected to the middle of the top of the cover plate (72).

7. The high-temperature flue gas recycling device for lime kilns according to claim 6, characterized in that: The connecting assembly (74) includes a connecting seat (741), which is fixedly connected to both sides above the cover plate (72). A square plug (742) is tightly inserted into one end of the connecting seat (741), and a connecting screw (743) is inserted into one end of the connecting seat (741). The connecting screw (743) and the square plug (742) are threaded together.

8. The high-temperature flue gas recycling device for lime kilns according to claim 7, characterized in that: The connecting seat (741) is fixedly connected to both sides with reinforcing ribs (744), and the bottom of the reinforcing ribs (744) is fixedly connected to the cover plate (72).

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