Energy-saving and carbon-reducing flue gas waste heat recovery device

Abstract

The utility model discloses an energy-saving and carbon-reducing flue gas waste heat recovery device, which relates to the technical field of flue gas waste heat recovery, and comprises a heat insulation box, a heat exchange tube is fixedly arranged in the heat insulation box, the right surface of the heat insulation box is fixedly connected with an adsorption box, a plate-shaped activated carbon adsorption net is arranged in the adsorption box, and the right wall of the adsorption box is communicated with a smoke outlet tube. A filter box is fixedly connected to the left surface of the heat preservation box, a box opening is fixedly formed in the upper wall of the filter box, a tubular filter screen is inserted into the box opening, a smoke inlet pipe is communicated with the portion, located in the tubular filter screen, of the lower wall of the filter box, and an opening cover is hinged to the upper end of the box opening. Dust in the flue gas is prevented from condensing on the inner wall of the heat exchange tube to affect waste heat recovery; harmful gases such as carbon dioxide in the flue gas can be adsorbed through the plate-shaped activated carbon adsorption net.

Description

Technical Field

[0001] The utility model relates to the technical field of flue gas waste heat recovery, in particular to a flue gas waste heat recovery device for energy saving and carbon reduction. Background Art

[0002] In order to further improve the thermal efficiency of the boiler and achieve the goal of energy saving and consumption reduction, recovering flue gas waste heat is also an important way to save energy.

[0003] For example, in the utility model patent with announcement number CN212430919U, a flue gas waste heat recovery device is disclosed, including an inner tank, to which a water inlet pipe and a water outlet pipe are fixedly connected, and the inner tank is provided with a waste heat recovery device which can effectively improve the flue gas waste heat recovery rate and further utilize the remaining waste heat in the flue gas after the waste heat recovery.

[0004] However, when the utility model is in use, it is unable to filter dust and harmful gases such as carbon dioxide in the flue gas. Dust is easily condensed on the waste heat recovery device, affecting waste heat recovery. At the same time, harmful gases such as carbon dioxide are emitted, which is not conducive to people's health. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a flue gas waste heat recovery device that saves energy and reduces carbon emissions, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the utility model is implemented through the following technical solutions: a flue gas waste heat recovery device for energy saving and carbon reduction, comprising an insulation box, a heat exchange pipe is fixedly arranged in the insulation box, a liquid inlet pipe is communicated with the upper wall of the insulation box, a liquid outlet pipe is communicated with the lower wall of the insulation box, an adsorption box is fixedly connected to the right surface of the insulation box, a plate-shaped activated carbon adsorption net is arranged in the adsorption box, a smoke outlet pipe is communicated with the right wall of the adsorption box, a filter box is fixedly connected to the left surface of the insulation box, a left end of the heat exchange pipe passes through the left wall of the insulation box and is communicated with the right wall of the filter box, a right end of the heat exchange pipe passes through the right wall of the insulation box and is communicated with the left wall of the adsorption box, a box port is fixedly arranged on the upper wall of the filter box, a limiting ring is fixedly arranged on the inner bottom surface of the filter box, a tubular filter net is inserted in the box port and the limiting ring, a smoke inlet pipe is communicated with the lower wall of the filter box and is located in the tubular filter net, a mouth cover is hinged on the upper end of the box port, and a positioning component is provided on one side of the mouth cover.

[0007] Preferably, the positioning assembly includes a fixing plate, which is fixedly connected to the left side of the upper surface of the filter box, a dovetail guide rail is fixedly arranged on the upper surface of the filter box and between the fixing plate and the box opening, an inverted L-shaped positioning plate is slidably connected to the dovetail guide rail, a threaded rod is rotatably connected between the fixing plate and the box opening, a motor is fixedly connected to the left surface of the fixing plate, the left end of the threaded rod passes through the fixing plate and is fixedly connected to the motor driving end, the threaded rod is threadedly connected to the inverted L-shaped positioning plate, and the inverted L-shaped positioning plate matches the opening cover.

[0008] Preferably, a limiting groove is provided on the inner surface of the adsorption box, and the plate-shaped activated carbon adsorption net penetrates through the upper wall of the adsorption box and is inserted into the limiting groove.

[0009] Preferably, a valve is installed on the liquid outlet pipe.

[0010] Beneficial Effects

[0011] The utility model provides a flue gas waste heat recovery device for energy saving and carbon reduction, which has the following beneficial effects:

[0012] 1. The flue gas can be filtered through the tubular filter to prevent the dust in the flue gas from condensing on the inner wall of the heat exchange tube and affecting the waste heat recovery;

[0013] 2. The heat exchange tube heats the water through the waste heat of the flue gas, and the insulation box can effectively prevent the loss of heat;

[0014] 3. The plate-shaped activated carbon adsorption net can adsorb harmful gases such as carbon dioxide in the flue gas, and the flue gas with harmful gases such as carbon dioxide removed is discharged through the smoke outlet pipe;

[0015] 4. The cover can be opened by moving the inverted L-shaped positioning plate to the left. The tubular filter can be taken out by opening the cover, which is convenient for disassembly of the tubular filter, so as to facilitate cleaning or modification of the tubular filter. After cleaning or modification of the tubular filter, the tubular filter is inserted through the box opening into the limit ring, and the cover is closed. The cover can be locked by moving the inverted L-shaped positioning plate to the right, which is convenient for installation of the tubular filter;

[0016] 5. Pulling out the plate-shaped activated carbon adsorption net can quickly complete the disassembly of the plate-shaped activated carbon adsorption net, making it easy to clean or change the plate-shaped activated carbon adsorption net. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is the front view of the utility model;

[0018] Figure 2 for Figure 1 A is an enlarged schematic diagram.

[0019] In the figure: 1. Insulation box; 2. Smoke inlet pipe; 3. Filter box; 4. Limiting ring; 5. Tubular filter screen; 6. Motor; 7. Liquid inlet pipe; 8. Adsorption box; 9. Smoke outlet pipe; 10. Plate-shaped activated carbon adsorption screen; 11. Liquid outlet pipe; 12. Valve; 13. Heat exchange tube; 14. Fixing plate; 15. Threaded rod; 16. Inverted L-shaped positioning plate; 17. Mouth cover; 18. Dovetail guide rail; 19. Box mouth; 20. Limiting groove. DETAILED DESCRIPTION

[0020] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] Directional terms mentioned in the present invention, such as "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., are only with reference to the directions shown in the drawings. The directional terms used are used to illustrate and understand the present invention, rather than to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0022] See also Figure 1-2The utility model provides a technical solution: a flue gas waste heat recovery device for energy saving and carbon reduction, comprising an insulation box 1, a heat exchange tube 13 is fixedly arranged in the insulation box 1, a liquid inlet pipe 7 is connected to the upper wall of the insulation box 1, a liquid outlet pipe 11 is connected to the lower part of the insulation box 1, an adsorption box 8 is fixedly connected to the right surface of the insulation box 1, a plate-shaped activated carbon adsorption net 10 is arranged in the adsorption box 8, a smoke outlet pipe 9 is connected to the right wall of the adsorption box 8, a filter box 3 is fixedly connected to the left surface of the insulation box 1, the left end of the heat exchange tube 13 penetrates the left wall of the insulation box 1 and is connected to the right wall of the filter box 3, the right end of the heat exchange tube 13 penetrates the right wall of the insulation box 1 and is connected to the left wall of the adsorption box 8, a box port 19 is fixedly arranged on the upper wall of the filter box 3, a limiting ring 4 is fixedly arranged on the inner bottom surface of the filter box 3, a tubular filter net 5 is inserted in the box port 19 and the limiting ring 4, and a smoke inlet pipe 2 is connected to the lower wall of the filter box 3 and located in the tubular filter net 5 , a cover 17 is hinged on the upper end of the box opening 19, and a positioning assembly is provided on one side of the cover 17; the positioning assembly includes a fixing plate 14, the fixing plate 14 is fixedly connected to the left side of the upper surface of the filter box 3, a dovetail guide rail 18 is fixedly arranged on the upper surface of the filter box 3 and located between the fixing plate 14 and the box opening 19, an inverted L-shaped positioning plate 16 is slidably connected to the dovetail guide rail 18, a threaded rod 15 is rotatably connected between the fixing plate 14 and the box opening 19, a motor 6 is fixedly connected to the left surface of the fixing plate 14, the left end of the threaded rod 15 penetrates the fixing plate 14 and is fixedly connected to the driving end of the motor 6, the threaded rod 15 is threadedly connected to the inverted L-shaped positioning plate 16, and the inverted L-shaped positioning plate 16 matches the cover 17; a limiting groove 20 is provided on the inner surface of the adsorption box 8, and the plate-shaped activated carbon adsorption net 10 penetrates the upper wall of the adsorption box 8 and is inserted into the limiting groove 20; a valve 12 is installed on the liquid outlet pipe 11.

[0023] Through the personnel in this field, all the electrical components in this case are electrically connected to their corresponding power supplies, and a suitable controller should be selected according to the actual situation to meet the control requirements. The specific connection and control sequence should refer to the working sequence between the electrical components in the following working principle to complete the electrical connection. The detailed connection means are well-known technologies in this field. The following mainly introduces the working principle and process, and no longer explains the electrical control.

[0024] Embodiment: According to the specification attached Figure 1-2It can be seen that when in use, the pipelines are connected, water can enter the heat preservation box 1 through the liquid inlet, the flue gas can enter the filter box 3 through the smoke inlet pipe 2, the flue gas can be filtered through the tubular filter 5 to prevent dust in the flue gas from condensing on the inner wall of the heat exchange tube 13 and affecting the waste heat recovery, the filtered flue gas enters the heat exchange tube 13, the heat exchange tube 13 heats the water through the waste heat of the flue gas, the heat preservation box 1 can effectively prevent the loss of heat, the flue gas enters the adsorption box 8 through the heat exchange tube 13, the plate-shaped activated carbon adsorption net 10 can adsorb harmful gases such as carbon dioxide in the flue gas, and the flue gas with harmful gases such as carbon dioxide removed is discharged through the smoke outlet pipe 9, the starting motor 6 can drive the threaded rod 15 to rotate, and the rotation of the threaded rod 15 can drive the inverted L-shaped positioning plate 16 to move to the left , the cover 17 can be opened by moving the inverted L-shaped positioning plate 16 to the left, and the tubular filter screen 5 can be taken out by opening the cover 17, which is convenient for disassembly of the tubular filter screen 5, thereby facilitating the cleaning or modification of the tubular filter screen 5. After cleaning or modifying the tubular filter screen 5, the tubular filter screen 5 is inserted through the box opening 19 into the limit ring 4, and the cover 17 is closed. The threaded rod 15 can be driven to rotate in the opposite direction by reversing the motor 6, and the inverted L-shaped positioning plate 16 can be driven to move to the right by rotating the threaded rod 15 in the opposite direction. The cover 17 can be locked by moving the inverted L-shaped positioning plate 16 to the right, which is convenient for the installation of the tubular filter screen 5. The plate-like activated carbon adsorption net 10 can be pulled out to quickly complete the disassembly of the plate-like activated carbon adsorption net 10, which is convenient for cleaning or modification of the plate-like activated carbon adsorption net 10.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A flue gas waste heat recovery device for energy saving and carbon reduction, characterized in that: The invention comprises a heat preservation box (1), wherein a heat exchange tube (13) is fixedly arranged inside the heat preservation box (1), the upper wall of the heat preservation box (1) is connected to a liquid inlet tube (7), the lower part of the heat preservation box (1) is connected to a liquid outlet tube (11), the right surface of the heat preservation box (1) is fixedly connected to an adsorption box (8), the adsorption box (8) is provided with a plate-shaped activated carbon adsorption net (10), the right wall of the adsorption box (8) is connected to a smoke outlet tube (9), the left surface of the heat preservation box (1) is fixedly connected to a filter box (3), the left end of the heat exchange tube (13) passes through the left wall of the heat preservation box (1) and is connected to the filter box (3). The filter box (3) is connected to the right wall of the box (3), the right end of the heat exchange tube (13) passes through the right wall of the insulation box (1) and is connected to the left wall of the adsorption box (8), the upper wall of the filter box (3) is fixedly provided with a box opening (19), the inner bottom surface of the filter box (3) is fixedly provided with a limit ring (4), a tubular filter screen (5) is inserted into the box opening (19) and the limit ring (4), the lower wall of the filter box (3) and located in the tubular filter screen (5) is connected to a smoke inlet pipe (2), the upper end of the box opening (19) is hinged with a cover (17), and a positioning component is provided on one side of the cover (17).

2. The flue gas waste heat recovery device for energy saving and carbon reduction according to claim 1 is characterized in that: The positioning assembly comprises a fixing plate (14), the fixing plate (14) being fixedly connected to the left side of the upper surface of the filter box (3), a dovetail guide rail (18) being fixedly arranged on the upper surface of the filter box (3) and located between the fixing plate (14) and the box opening (19), an inverted L-shaped positioning plate (16) being slidably connected to the dovetail guide rail (18), a threaded rod (15) being rotatably connected between the fixing plate (14) and the box opening (19), a motor (6) being fixedly connected to the left surface of the fixing plate (14), a left end of the threaded rod (15) passing through the fixing plate (14) and being fixedly connected to a driving end of the motor (6), the threaded rod (15) being threadedly connected to the inverted L-shaped positioning plate (16), and the inverted L-shaped positioning plate (16) matching the opening cover (17).

3. The flue gas waste heat recovery device for energy saving and carbon reduction according to claim 1 is characterized in that: The inner surface of the adsorption box (8) is provided with a limiting groove (20), and the plate-shaped activated carbon adsorption net (10) penetrates the upper wall of the adsorption box (8) and is inserted into the limiting groove (20).

4. The flue gas waste heat recovery device for energy saving and carbon reduction according to claim 1 is characterized in that: A valve (12) is installed on the liquid outlet pipe (11).

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