Flue gas treatment equipment for thermal power plant

Abstract

The invention relates to the technical field of thermal power plant flue gas treatment, and discloses thermal power plant flue gas treatment equipment which comprises two vertical plates, an outer frame is fixedly connected between the two vertical plates, an inner frame is fixedly connected between the inner walls of the two sides of the outer frame, and a hollow containing assembly is inserted between the top and the bottom of the inner frame. Smoke is input into a second connecting smoke pipe through a smoke pipe at the top of the equipment and a second one-way valve and then input into a heat conduction smoke pipe through a rotating water pipe, so that water in an inner heat conduction shell is heated, and then the smoke is input into a gap between the inner heat conduction shell and an outer heat preservation shell through the smoke pipe at the top of the equipment and a first one-way valve; the smoke is conveyed downwards along the outer surface, surrounding the inner temperature conduction shell, of the spiral blade, so that auxiliary heating is carried out on water in the inner temperature conduction shell, the water in the inner temperature conduction shell is better heated, and the water in the heating tank is rapidly heated.

Description

Technical Field

[0001] The invention relates to the technical field of flue gas treatment in thermal power plants, in particular to a flue gas treatment device in a thermal power plant. Background Art

[0002] At present, the main fuel for thermal power generation in thermal power plants is coal. The flue gas after coal combustion will be treated through secondary combustion, flue gas desulfurization and denitrification, flue gas waste heat recovery, etc., so as to avoid more economic losses in thermal power plants.

[0003] Among them, after searching, the Chinese patent with the announcement number CN119163990A discloses a thermal power plant boiler flue gas waste heat energy-saving device. The above patent realizes the function of water heating with a structural scheme combining a heating tank and a flue pipe. However, since the flue pipe is a fixed structure, the flue pipe cannot evenly heat the water in the heating tank, resulting in a slow heating speed of the water in the heating tank, affecting the efficiency of the thermal power plant flue gas waste heat recovery and treatment. Therefore, in order to advance the industry technology, better realize the flue gas waste heat recovery and treatment function, and improve the competitiveness of core technologies, this application proposes a new implementation plan that is different from the structure and application method of the thermal power plant flue gas waste heat recovery and treatment equipment in the prior art. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the present invention provides a flue gas treatment device for a thermal power plant, which is mainly used to solve the problem that during the use of the flue gas treatment device, the water in the heating tank is heated slowly, affecting the efficiency of the waste heat recovery treatment of the flue gas in the thermal power plant.

[0006] (II) Technical solution

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A flue gas treatment device for a thermal power plant comprises two vertical plates, an outer frame is fixedly connected between the two vertical plates, an inner frame is fixedly connected between the inner walls on both sides of the outer frame, a hollow containing component is inserted between the top and the bottom of the inner frame, the hollow containing component comprises an inner heat-conducting shell and an outer heat-insulating shell, the inner heat-conducting shell and the outer heat-insulating shell are fixedly inserted between the top and the bottom of the inner frame, the outer heat-insulating shell is arranged on the outside of the inner heat-conducting shell, a gap is left between the outer heat-insulating shell and the inner heat-conducting shell, an upper connecting ring is fixedly connected to the top end between the inner heat-conducting shell and the outer heat-insulating shell, an annular cover is provided on the threaded sleeve at the bottom end of the outer heat-insulating shell, the top and bottom ends of the inner heat-conducting shell are both provided with fixed plug-in connecting cylinders, one end of the connecting cylinder is sealed and plugged with a connecting water pipe, and the top and bottom of one side of the outer heat-insulating shell are both sealed and plugged with the A connecting smoke pipe, the other end of the first connecting smoke pipe is connected to the first one-way valve through a flange, the other end of the first one-way valve is connected to the smoke pipe through a flange, one side of the inner heat-conducting shell is sealed and plugged with a steam pipe, the other end of the steam pipe passes through the outer heat-insulating shell, one side of the connecting water pipe is sealed and plugged with a sealing ring, one end of the sealing ring is rotatably plugged with a rotating water pipe, one end between the two rotating water pipes is fixedly plugged with a heat-conducting smoke pipe, the other end of the rotating water pipe is rotatably plugged with a second connecting smoke pipe, the other end of the second connecting smoke pipe is connected to the second one-way valve through a flange, the other end of the second one-way valve is connected to the smoke pipe, the top outer wall of the outer frame is fixedly connected with a motor, the output end of the motor and the outer wall of one of the rotating water pipes are key-connected with gears, and the two gears are meshed.

[0009] Furthermore, both ends of the heat-conducting smoke pipe are clamped with fixing blocks, a fixing rod is fixedly connected between the two fixing blocks, and a plurality of water-displacing blades are fixedly connected to the outer wall of the fixing rod.

[0010] Based on the above solution, a mesh cover is clamped on the top of the steam pipe.

[0011] As a further solution of the present invention, a spiral blade is fixedly connected to the circumferential outer wall of the inner heat-conducting shell, and the spiral blade is located in the gap between the inner heat-conducting shell and the outer heat-insulating shell.

[0012] Furthermore, the other end of the connecting water pipe is connected to an electric valve via a flange.

[0013] Based on the above scheme, a bottom plate is fixedly connected to the bottom ends between the two vertical plates, two connecting ribs are fixedly connected to the top of the bottom plate, and one side of the connecting rib is fixedly connected to one side of the vertical plate.

[0014] As a further solution of the present invention, a connecting shell is clamped at the other end of the smoke vent pipe, a fixing frame is fixedly connected between multiple inner walls of the connecting shell, and a suction fan is fixedly connected to one side of the fixing frame.

[0015] Furthermore, a filter assembly is plugged into the top of the connecting shell, and the filter assembly includes a top plate, which is clamped on the top of the connecting shell, and a connecting frame is fixedly connected to the bottom of the top plate, and multiple filter nets are clamped between multiple side inner walls of the connecting frame.

[0016] On the basis of the above scheme, the outer walls on both sides of the connecting shell are rotatably connected with threaded rods, one end of the threaded rod is clamped with one end of the top plate, and a butterfly nut is threadedly sleeved on this end of the threaded rod.

[0017] (III) Beneficial effects

[0018] Compared with the prior art, the present invention provides a flue gas treatment device for a thermal power plant, which has the following beneficial effects:

[0019] 1. The flue gas is input into the second connecting flue pipe through the flue pipe at the top of the equipment and the second one-way valve, and then input into the heat-conducting flue pipe through the rotating water pipe, so as to heat the water in the inner temperature-conducting shell. Then, the flue gas is input into the gap between the inner temperature-conducting shell and the outer insulation shell through the flue pipe at the top of the equipment and the first one-way valve. Then, the flue gas is transported downward along the spiral blades around the outer surface of the inner temperature-conducting shell, so as to assist in heating the water in the inner temperature-conducting shell, and then better heat the water in the inner temperature-conducting shell, so as to quickly heat the water in the heating tank.

[0020] 2. The water pipe, the heat-conducting smoke pipe and the water-displacing blade are driven by the motor and the meshing of two gears to rotate, thereby causing the water to flow, and then the water is evenly contacted with the heat-conducting smoke pipe, thereby evenly heating the water in the inner temperature-conducting shell.

[0021] 3. Unscrew the butterfly nut, pull the threaded rod to separate it from the top plate, and then pull the filter assembly out of the connecting shell, so as to facilitate the replacement and cleaning of the filter assembly to ensure the filtering effect of the flue gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a three-dimensional structural schematic diagram of a thermal power plant flue gas treatment equipment embodiment 1 proposed by the present invention;

[0023] Figure 2 This is a partial front structural diagram of a flue gas treatment device for a thermal power plant proposed in the present invention;

[0024] Figure 3 This is a schematic cross-sectional structure diagram of a hollow containing component of a thermal power plant flue gas treatment device embodiment 1 proposed by the present invention;

[0025] Figure 4 It is a partial three-dimensional structural schematic diagram of a thermal power plant flue gas treatment equipment embodiment 1 proposed by the present invention;

[0026] Figure 5 A schematic cross-sectional view of a hollow containing assembly and its internal structure of a thermal power plant flue gas treatment device embodiment 1 proposed by the present invention;

[0027] Figure 6 This is a schematic diagram of the cross-sectional structure of a connection shell of a thermal power plant flue gas treatment device embodiment 1 proposed by the present invention;

[0028] Figure 7 This is a schematic diagram of the three-dimensional structure of a second embodiment of a flue gas treatment device for a thermal power plant proposed by the present invention;

[0029] Figure 8 A schematic diagram of the three-dimensional structure of a connection shell of a second embodiment of a flue gas treatment device for a thermal power plant proposed by the present invention;

[0030] Fig. 9 This is a schematic diagram of the cross-sectional structure of a connection shell of Example 2 of a flue gas treatment device for a thermal power plant proposed by the present invention.

[0031] In the figure: 1, vertical plate; 2, outer frame; 3, inner frame; 4, hollow containing assembly; 401, inner heat-conducting shell; 402, outer heat-insulating shell; 403, upper connecting ring; 404, annular cover; 405, connecting cylinder; 5, connecting water pipe; 6, first connecting smoke pipe; 7, first non-return valve; 8, smoke pipe; 9, steam pipe; 10, sealing ring; 11, rotating water pipe; 12, heat-conducting smoke pipe; 13, second connecting smoke pipe; 14, The second one-way valve; 15. the motor; 16. the gear; 17. the fixing block; 18. the fixing rod; 19. the water-displacing blade; 20. the mesh cover; 21. the spiral blade; 22. the electric valve; 23. the bottom plate; 24. the connecting rib; 25. the connecting shell; 26. the fixing frame; 27. the suction fan; 28. the filter assembly; 2801. the top plate; 2802. the connecting frame; 2803. the filter screen; 29. ​​the threaded rod; 30. the butterfly nut. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Example 1

[0034] Reference Figure 1-Figure 6A flue gas treatment device for a thermal power plant comprises two vertical plates 1, an outer frame 2 is welded between the two vertical plates 1, an inner frame 3 is welded between the inner walls of both sides of the outer frame 2, a hollow containing component 4 is inserted between the top and the bottom of the inner frame 3, the hollow containing component 4 comprises an inner heat-conducting shell 401 and an outer heat-insulating shell 402, the inner heat-conducting shell 401 and the outer heat-insulating shell 402 are fixedly inserted between the top and the bottom of the inner frame 3, the outer heat-insulating shell 402 is arranged on the outer side of the inner heat-conducting shell 401, a gap is left between the outer heat-insulating shell 402 and the inner heat-conducting shell 401, a spiral blade 21 is welded on the circumferential outer wall of the inner heat-conducting shell 401, and the spiral blade 21 is located in the gap between the inner heat-conducting shell 401 and the outer heat-insulating shell 402, so as to guide the flow of flue gas, an upper connecting ring 403 is welded at the top between the inner heat-conducting shell 401 and the outer heat-insulating shell 402, and a threaded bottom end of the outer heat-insulating shell 402 is welded on the outer wall of the inner heat-conducting shell 401. An annular cover 404 is provided, and the top and bottom ends of the inner heat-conducting shell 401 are both provided with fixed plug-in connecting tubes 405, and one end of the connecting tube 405 is sealed and plugged with a connecting water pipe 5, so as to facilitate the input of water into the inner heat-conducting shell 401 and the discharge of the heated water flow from the inner heat-conducting shell 401. The top and bottom of one side of the outer heat-insulating shell 402 are both sealed and plugged with a first connecting smoke pipe 6, and the other end of the first connecting smoke pipe 6 is connected to a first one-way valve 7 through a flange, and the other end of the first one-way valve 7 is connected to a smoke pipe 8 through a flange. The smoke is input into the gap between the inner heat-conducting shell 401 and the outer heat-insulating shell 402 through the smoke pipe 8 and the first one-way valve 7 at the top of the equipment, and then the smoke is transported downward along the spiral blades 21 around the outer surface of the inner heat-conducting shell 401, so as to perform auxiliary heating on the water in the inner heat-conducting shell 401, and then better heat the water in the inner heat-conducting shell 401;

[0035] A steam pipe 9 is sealed and plugged into one side of the inner temperature-conducting shell 401, so that the heated water vapor is discharged from the inner temperature-conducting shell 401, and the other end of the steam pipe 9 passes through the outer heat-insulating shell 402. A sealing ring 10 is sealed and plugged into one side of the connecting water pipe 5, and a rotating water pipe 11 is rotatably plugged into one end of the sealing ring 10. A heat-conducting smoke pipe 12 is fixedly plugged into one end between the two rotating water pipes 11, and a second connecting smoke pipe 13 is rotatably plugged into the other end of the rotating water pipe 11. The other end of the second connecting smoke pipe 13 is connected to the second one-way valve 14 through a flange, and the other end of the second one-way valve 14 is connected to the smoke pipe 8. The smoke is input into the second connecting smoke pipe 13 through the smoke pipe 8 and the second one-way valve 14 at the top of the equipment, and then input into the heat-conducting smoke pipe 12 through the rotating water pipe 11, so as to heat the water in the inner temperature-conducting shell 401, and then the smoke is discharged from the rotating water pipe 11, the second connecting smoke pipe 13, the second one-way valve 14 and the smoke pipe 8 at the bottom of the equipment;

[0036] A motor 15 is fixed to the top outer wall of the outer frame 2 by bolts, and a gear 16 is key-connected to the output end of the motor 15 and the outer wall of one of the rotating water pipes 11, and the two gears 16 are meshed with each other. Both ends of the heat-conducting smoke pipe 12 are clamped with fixed blocks 17, and a fixed rod 18 is welded between the two fixed blocks 17. A plurality of water-displacing blades 19 are welded to the outer wall of the fixed rod 18. Driven by the motor 15 and under the meshing action of the two gears 16, the rotating water pipe 11, the heat-conducting smoke pipe 12 and the water-displacing blades 19 are driven to rotate, thereby causing the water flow to flow, and then causing the water flow to evenly contact the heat-conducting smoke pipe 12, thereby evenly heating the water in the inner temperature-conducting shell 401;

[0037] A mesh cover 20 is clamped on the top of the steam pipe 9 to prevent dust from entering the steam pipe 9. The other end of the water pipe 5 is connected to an electric valve 22 through a flange. A bottom plate 23 is welded to the bottom end between the two vertical plates 1. Two connecting ribs 24 are welded to the top of the bottom plate 23. One side of the connecting rib 24 is fixedly connected to one side of the vertical plate 1, thereby improving the firmness of the connection between the bottom plate 23 and the vertical plate 1. A connecting shell 25 is clamped on the other end of the smoke pipe 8. A fixing frame 26 is fixed between the inner walls of the multiple sides of the connecting shell 25 by bolts. A suction fan 27 is fixed to one side of the fixing frame 26 by bolts to provide power for the transportation of smoke.

[0038] Working principle of this embodiment: when in use, the smoke pipe 8 is connected to the smoke delivery pipe, and the electric valve 22 is connected to the water delivery pipe. First, the electric valve 22 is started, and the water flow is input from the connecting water pipe 5 at the top of the device into the inner temperature-conducting shell 401. Then, the electric valve 22 is closed. Then, under the action of the suction fan 27, the smoke is input into the second connecting smoke pipe 13 through the smoke pipe 8 and the second one-way valve 14 at the top of the device, and then input into the heat-conducting smoke pipe 12 through the rotating water pipe 11, so as to heat the water in the inner temperature-conducting shell 401. Then, the smoke is discharged from the rotating water pipe 11, the second connecting smoke pipe 13, the second one-way valve 14 and the smoke pipe 8 at the bottom of the device. At the same time, the motor 15 is started, and the rotating water pipe 11, the heat-conducting smoke pipe 12 and the water-displacing blade 19 are driven by the motor 15 and the meshing action of the two gears 16 to rotate, so as to make the water flow flow, and then make the water flow evenly contact the heat-conducting smoke pipe 12, so as to evenly heat the water in the inner temperature-conducting shell 401.

[0039] Next, under the action of the suction fan 27, the smoke is input into the gap between the inner temperature conducting shell 401 and the outer insulation shell 402 through the smoke pipe 8 and the first one-way valve 7 at the top of the equipment. Then, the smoke is transported downward along the spiral blades 21 around the outer surface of the inner temperature conducting shell 401, thereby auxiliary heating the water in the inner temperature conducting shell 401, and further better heating the water in the inner temperature conducting shell 401. Finally, the smoke is discharged from the first connecting smoke pipe 6, the first one-way valve 7 and the smoke pipe 8 at the bottom of the equipment, and the heated water is discharged from the connecting water pipe 5 at the bottom of the equipment.

[0040] Example 2

[0041] Reference Figure 7-Figure 9 A flue gas treatment device for a thermal power plant includes a filter assembly 28 inserted at the top of a connecting shell 25, the filter assembly 28 includes a top plate 2801, the top plate 2801 is clamped on the top of the connecting shell 25, and a connecting frame 2802 is fixed to the bottom of the top plate 2801 by bolts, and multiple filter screens 2803 are clamped between the inner walls of multiple sides of the connecting frame 2802, so as to filter the smoke in the flue gas, and the outer walls on both sides of the connecting shell 25 are rotatably connected with a threaded rod 29, one end of the threaded rod 29 is clamped with one end of the top plate 2801, and a butterfly nut 30 is threadedly sleeved on this end of the threaded rod 29. Unscrew the butterfly nut 30, and then pull the threaded rod 29 to separate it from the top plate 2801, and then, pull the filter assembly 28 out of the connecting shell 25, so as to facilitate the replacement and cleaning of the filter assembly 28.

[0042] The working principle of this embodiment is as follows: when in use, the smoke is input into the connecting shell 25 from the smoke pipe 8 at the bottom of the device, and then, after the smoke dust in the smoke is filtered by the filter net 2803, it is discharged from the other end of the connecting shell 25. When it is necessary to clean and replace the filter component 28, unscrew the butterfly nut 30, and then pull the threaded rod 29 to separate it from the top plate 2801, and then, pull the filter component 28 out of the connecting shell 25, so that it is convenient to replace and clean the filter component 28.

[0043] The electrical components mentioned in this article are all connected to an external main controller and 220V mains electricity, and the main controller can be a conventional known device for controlling a computer or the like.

[0044] In the description of this article, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, a direct connection, or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A flue gas treatment device for a thermal power plant, comprising two vertical plates (1), characterized in that: An outer frame (2) is fixedly connected between the two vertical plates (1), an inner frame (3) is fixedly connected between the inner walls on both sides of the outer frame (2), a hollow containing component (4) is inserted between the top and the bottom of the inner frame (3), and the hollow containing component (4) comprises an inner heat-conducting shell (401) and an outer heat-insulating shell (402), the inner heat-conducting shell (401) and the outer heat-insulating shell (402) are fixedly inserted between the top and the bottom of the inner frame (3), the outer heat-insulating shell (402) is arranged on the outside of the inner heat-conducting shell (401), and the outer heat-insulating shell (402) is arranged on the outside of the inner heat-conducting shell (401). A gap is left between the shell (402) and the inner heat-conducting shell (401), an upper connecting ring (403) is fixedly connected to the top of the inner heat-conducting shell (401) and the outer heat-insulating shell (402), a ring cover (404) is threadedly sleeved on the bottom end of the outer heat-insulating shell (402), the top and bottom ends of the inner heat-conducting shell (401) are both fixedly plugged into a connecting tube (405), one end of the connecting tube (405) is sealed and plugged into a connecting water pipe (5), and the top and bottom of one side of the outer heat-insulating shell (402) are both sealed and plugged into a first connecting tube (405). The first connecting smoke pipe (6) is connected to a first one-way valve (7) at the other end through a flange, and the first one-way valve (7) is connected to a smoke pipe (8) at the other end through a flange. A steam pipe (9) is sealed and plugged into one side of the inner heat-conducting shell (401), and the other end of the steam pipe (9) passes through the outer heat-insulating shell (402). A sealing ring (10) is sealed and plugged into one side of the connecting water pipe (5), and a rotating water pipe (11) is rotatably plugged into one end of the sealing ring (10). The two rotating water pipes (11) are connected to each other. A heat-conducting smoke pipe (12) is fixedly plugged into one end, a second connecting smoke pipe (13) is rotatably plugged into the other end of the rotating water pipe (11), the other end of the second connecting smoke pipe (13) is connected to a second one-way valve (14) via a flange, the other end of the second one-way valve (14) is connected to the smoke pipe (8), a motor (15) is fixedly connected to the top outer wall of the outer frame (2), the output end of the motor (15) and the outer wall of one of the rotating water pipes (11) are key-connected with a gear (16), and the two gears (16) are meshed with each other.

2. A flue gas treatment equipment for a thermal power plant according to claim 1, characterized in that: Both ends of the heat-conducting smoke pipe (12) are clamped with fixing blocks (17), a fixing rod (18) is fixedly connected between the two fixing blocks (17), and a plurality of water-displacing blades (19) are fixedly connected to the outer wall of the fixing rod (18).

3. The flue gas treatment equipment for a thermal power plant according to claim 1, characterized in that: The top end of the steam pipe (9) is clamped with a mesh cover (20).

4. The flue gas treatment equipment for a thermal power plant according to claim 1, characterized in that: The circumferential outer wall of the inner heat-conducting shell (401) is fixedly connected with a spiral blade (21), and the spiral blade (21) is located in the gap between the inner heat-conducting shell (401) and the outer heat-insulating shell (402).

5. The flue gas treatment equipment for a thermal power plant according to claim 1, characterized in that: The other end of the connecting water pipe (5) is connected to an electric valve (22) via a flange.

6. The flue gas treatment equipment for a thermal power plant according to claim 1, characterized in that: A bottom plate (23) is fixedly connected to the bottom end between the two vertical plates (1), and two connecting ribs (24) are fixedly connected to the top of the bottom plate (23), and one side of the connecting rib (24) is fixedly connected to one side of the vertical plate (1).

7. The flue gas treatment equipment for a thermal power plant according to claim 1, characterized in that: The other end of the smoke vent pipe (8) is clamped with a connecting shell (25), a fixing frame (26) is fixedly connected between the inner walls of multiple sides of the connecting shell (25), and a suction fan (27) is fixedly connected to one side of the fixing frame (26).

8. The flue gas treatment equipment for a thermal power plant according to claim 7, characterized in that: The top of the connecting shell (25) is plugged with a filter assembly (28), the filter assembly (28) comprises a top plate (2801), the top plate (2801) is clamped on the top of the connecting shell (25), the bottom of the top plate (2801) is fixedly connected with a connecting frame (2802), and a plurality of filter screens (2803) are clamped between the inner walls of multiple sides of the connecting frame (2802).

9. A flue gas treatment device for a thermal power plant according to claim 8, characterized in that: The outer walls on both sides of the connection shell (25) are rotatably connected with threaded rods (29), one end of the threaded rod (29) is clamped with one end of the top plate (2801), and a butterfly nut (30) is threadedly sleeved on this end of the threaded rod (29).

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