A flue gas cleaning device for a thermal power plant

Abstract

The utility model discloses a thermal power plant flue gas purification device, including flue gas purification treatment box main part, the inside surface fixed separation board of flue gas purification treatment box main part, the side surface inner end surface fixed of flue gas purification treatment box main part has the smoke pipe, the lower end surface of separation board is provided with the guide smoke port and the intercommunication, the outer surface fixed connection of flue gas purification treatment box main part has the water pump, the bottom suction pipe of water pump is fixed in the bottom of flue gas purification treatment box main part, the lower surface fixed connection of water pump's top water guide pipe place has two groups of guide tubes, the lower end fixed of guide pipe has the cross pipe, the outer end fixed connection of cross pipe has annular shower nozzle, by adopting the spray space of separation board interlayer two, its flue gas enters from the bottom and is guided into another spray space again and sprays again, filters and adsorbs again, and its spray liquid and flue gas fusion are even and comprehensive, improve the efficiency of spray processing.

Description

Technical Field

[0001] This utility model relates to the field of flue gas purification devices for thermal power plants, and more specifically, to a flue gas purification device for thermal power plants. Background Technology

[0002] A thermal power plant, or cogeneration plant for short, is a factory that uses combustible materials as fuel to produce electricity. During the power generation process, flue gas purification devices are used to treat the emitted flue gas. In traditional technology, according to a search, patent number CN220802548U, entitled "Utility Model of Flue Gas Purification Device for Thermal Power Plants," is found. It includes a pipe body with an air inlet and an air outlet. Through research and analysis, it was found that this device has less resistance to flue gas flow and no flue gas accumulation at an angle. At the same time, it sprays a spray liquid into the spiral air channel to adsorb and remove particles in the flue gas. However, it still has the following drawbacks to a certain extent. For example, when this device is used, it mostly treats the emitted flue gas directly and does not have the function of cooling and pre-treating the emitted flue gas. A large amount of heat will remain in the flue gas, which can easily affect the service life of the treatment components after long-term use. Furthermore, it does not have the function of circulating the flue gas during treatment. In order to solve the above technical problems, we have designed a flue gas purification device for thermal power plants.

[0003] Based on existing technology, according to the authorization announcement number CN 222534440 U, ​​this utility model relates to the field of flue gas treatment technology, and in particular to a flue gas purification device for thermal power plants. The device includes a housing, a filling frame installed through the right side of the housing, a rotation limit plate fixedly installed on the right side of the housing via a rotating shaft, filter material filling the inner cavity of the filling frame, a pretreatment box fixedly installed at the bottom left side of the housing, a pretreatment mechanism provided in the inner cavity of the pretreatment box, a filter plate horizontally fixedly connected to the top of the inner cavity of the housing, and a smoke exhaust box connected to the top of the housing. A water separator is fixedly connected to the inner cavity of the smoke exhaust box. This utility model can perform cooling pretreatment on flue gas. During use, the liquid in the pretreatment box cools the flue gas and removes some dust particles. After treating the flue gas, the user controls whether the flue gas is directly discharged or recirculated by controlling the rotating valve plate.

[0004] In the aforementioned patent, the desulfurization spray treatment involves flue gas rising from the bottom during spraying. The flue gas rises too quickly, resulting in low uniformity and comprehensiveness of the spraying process. This affects the fusion and adsorption treatment between the sprayed liquid and the flue gas, leading to incomplete spraying treatment. Utility Model Content

[0005] To address the problems existing in the prior art, the purpose of this utility model is to provide a flue gas purification device for thermal power plants. By using a partition plate to separate two spray spaces, the flue gas enters from the top and is then guided from the bottom into another spray space for spraying again, rising again for filtration and adsorption. During spraying, the flue gas flows slowly, and the spray liquid and flue gas are evenly and comprehensively mixed, thereby improving the efficiency of spray treatment.

[0006] To solve the above problems, the present invention adopts the following technical solution.

[0007] A flue gas purification device for a thermal power plant includes a flue gas purification treatment box body. A partition plate is fixed to the inner surface of the flue gas purification treatment box body. A flue gas inlet pipe is fixed to the inner side surface of the flue gas purification treatment box body. A flue gas guide port and a connecting port are provided on the lower surface of the partition plate. A water pump is fixedly connected to the outer surface of the flue gas purification treatment box body. The bottom suction pipe of the water pump is fixed to the bottom of the flue gas purification treatment box body. Two sets of conduits are fixedly connected to the lower surface of the top water guide pipe of the water pump. The lower ends of the conduits are fixed with… A horizontal pipe is fixedly connected to an annular spray pipe at its outer end. A spray nozzle is provided on the lower surface of the annular spray pipe. A filter bucket is fixed on the upper inner surface of the main body of the flue gas purification treatment box. A filter packing layer and an activated carbon adsorption layer are provided on the inner side of the filter bucket. By using a partition plate to separate the two spray spaces, the flue gas enters from the top and is then guided from the bottom into the other spray space for spraying again, rising again for filtration and adsorption. During spraying, the flue gas flows slowly, and the spray liquid mixes evenly and comprehensively with the flue gas, improving the efficiency of the spray treatment.

[0008] Furthermore, the bottom of the filter hopper is inserted into the inner surface of the flue gas purification treatment box body, and an annular seat is provided on the lower end surface of the filter hopper. The surface of the annular seat is fixedly connected to the upper surface of the flue gas purification treatment box body by bolts.

[0009] Furthermore, an inlet pipe is provided on the inner surface of the outer end of the flue gas purification and treatment box body, and the inlet pipe is located on the upper side of the flue gas purification and treatment box body. An outlet pipe is provided on the inner surface of the outer end of the flue gas purification and treatment box body, and the outlet pipe is located on the lower side of the flue gas purification and treatment box body.

[0010] Furthermore, the conduit is interconnected with the annular spray pipe, and its spray nozzles are evenly and densely arranged in a ring around the lower surface of the annular spray pipe.

[0011] Furthermore, the smoke inlet has a circular structure, with four groups distributed on the surface of the partition plate.

[0012] Furthermore, the connection port adopts a strip-shaped structure and is distributed at the bottom of the partition plate.

[0013] Furthermore, the filter bucket adopts a variable diameter bucket structure, with a constricting bottom and an expanding top.

[0014] Compared with existing technologies, the advantages of this utility model are:

[0015] (1) By using a partition plate to separate two spray spaces, the flue gas enters from the top and is then introduced into another spray space from the bottom for spraying again, and then rises again for filtration and adsorption. During spraying, the flue gas flows slowly, and the spray liquid and flue gas are evenly and comprehensively mixed, thereby improving the efficiency of spray treatment. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a first cross-sectional view of the overall structure of this utility model;

[0018] Figure 3 This is a second cross-sectional view of the overall structure of this utility model;

[0019] Figure 4 This is a third cross-sectional view of the overall structure of this utility model;

[0020] Figure 5 This is a fourth cross-sectional view of the overall structure of this utility model.

[0021] Explanation of the labels in the diagram:

[0022] 1. Main body of flue gas purification treatment box; 2. Partition plate; 3. Smoke inlet pipe; 4. Smoke guide port; 5. Connecting port; 6. Water pump; 7. Water guide pipe; 8. Pipe; 80. Horizontal pipe; 9. Annular spray pipe; 10. Spray nozzle; 11. Filter bucket; 12. Filter packing layer; 13. Activated carbon adsorption layer; 14. Annular seat; 15. Inlet pipe; 16. Drain pipe. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example 1

[0025] Please see Figure 1-5A flue gas purification device for a thermal power plant includes a flue gas purification treatment box body 1. A partition plate 2 is fixed to the inner surface of the flue gas purification treatment box body 1. A flue gas inlet pipe 3 is fixed to the inner end surface of the side of the flue gas purification treatment box body 1. A flue gas guide port 4 and a connecting port 5 are provided on the lower end surface of the partition plate 2. A water pump 6 is fixedly connected to the outer surface of the flue gas purification treatment box body 1. The bottom suction pipe of the water pump 6 is fixed to the bottom of the flue gas purification treatment box body 1. Two sets of conduits 8 are fixedly connected to the lower surface of the top water guide pipe 7 of the water pump 6. A horizontal pipe 8 is fixed to the lower end of the conduit 8. 0. A ring-shaped spray pipe 9 is fixedly connected to the outer end of the horizontal pipe 80. A spray nozzle 10 is provided on the lower surface of the ring-shaped spray pipe 9. A filter bucket 11 is fixed on the upper inner surface of the flue gas purification treatment box body 1. A filter packing layer 12 and an activated carbon adsorption layer 13 are provided on the inner side of the filter bucket 11. By using a partition plate to separate the two spray spaces, the flue gas enters from the top and is then introduced into another spray space from the bottom for spraying again and rising again for filtration and adsorption. During spraying, the flue gas flows slowly, and the spray liquid and flue gas are evenly and comprehensively mixed, improving the efficiency of spray treatment.

[0026] The bottom of the filter hopper 11 is inserted into the inner surface of the flue gas purification treatment box body 1. An annular seat 14 is provided on the lower surface of the filter hopper 11. The surface of the annular seat 14 is fixedly connected to the upper surface of the flue gas purification treatment box body 1 by bolts. This facilitates the installation of the filter hopper 11. The bottom is inserted into the upper inner surface of the flue gas purification treatment box body 1 and then fixed by bolts. The fixing is convenient and firm.

[0027] An inlet pipe 15 is provided on the inner surface of the outer end of the flue gas purification treatment box body 1. The inlet pipe 15 is located on the upper side of the flue gas purification treatment box body 1. An outlet pipe 16 is provided on the inner surface of the outer end of the flue gas purification treatment box body 1. The outlet pipe 16 is located on the lower side of the flue gas purification treatment box body 1. The inlet pipe 15 facilitates the introduction of desulfurization liquid, and the outlet pipe 16 facilitates the discharge of desulfurization liquid for replacement.

[0028] The conduit 8 is interconnected with the annular spray pipe 9, and its spray nozzles 10 are evenly and densely arranged in a ring on the lower surface of the annular spray pipe 9; the spray is uniform and comprehensive, and the ring of spray nozzles 10 can spray evenly and comprehensively, and can spray the flue gas for treatment, and can spray evenly and comprehensively for desulfurization of the flue gas.

[0029] The smoke inlet 4 has a round opening structure, and four sets are distributed on the surface of the partition plate 2; this facilitates the uniform flow of smoke and allows the smoke to be guided from the left end to the right end for re-spraying, ensuring comprehensive spraying treatment.

[0030] The connecting port 5 adopts a strip-shaped structure and is distributed at the bottom of the partition plate 2; it can facilitate the interconnection of desulfurization liquid, and can be interconnected from left to right, which is convenient for reflux and recycling.

[0031] The filter hopper 11 adopts a variable diameter hopper structure, with a converging structure at the bottom and an expanding structure at the top; this facilitates the uniform rise of flue gas for adsorption and filtration. The filter hopper 11 is provided with a filter packing layer 12 and an activated carbon adsorption layer 13 (existing technology); the rising flue gas can be adsorbed and filtered through the filter packing layer 12 and the activated carbon adsorption layer 13, resulting in comprehensive filtration.

[0032] When in use, the flue gas purification treatment box body 1 has an inlet pipe 3 fixed on the inner side surface, and the lower surface of the partition plate 2 is provided with a flue gas guide port 4 and a connecting port 5. The connecting port 5 adopts a strip-shaped structure and is distributed at the bottom of the partition plate 2; it can allow the desulfurization liquid to communicate with each other, and can communicate with each other from left to right, which is convenient for reflux and recycling.

[0033] Two sets of conduits 8 are fixedly connected to the lower surface of the top water guide pipe 7 of the water pump 6. A horizontal pipe 80 is fixed to the lower end of the conduit 8, and an annular spray pipe 9 is fixedly connected to the outer end of the horizontal pipe 80. A spray nozzle 10 is provided on the lower surface of the annular spray pipe 9. The water pump 6 draws desulfurization liquid from the bottom of the flue gas purification treatment box body 1 and introduces it into the conduit 8. It can be interconnected with the annular spray pipe 9 through the horizontal pipe 80 and can be introduced into the annular spray pipe 9. It can be sprayed through the bottom spray nozzle 10, which is convenient to use. The flue gas inlet 4 has a round structure, and four sets are distributed on the surface of the partition plate 2. It facilitates the uniform flow of flue gas and can introduce flue gas from the left end to the right end for re-spraying, so that the spraying treatment is comprehensive. The flue gas flow is slow, and spraying is carried out on both sides, so that the spraying treatment is comprehensive.

[0034] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A flue gas purification device for thermal power plants, comprising a flue gas purification and treatment box body (1), characterized in that: A partition plate (2) is fixed to the inner surface of the flue gas purification treatment box body (1). A smoke inlet pipe (3) is fixed to the inner end surface of the side of the flue gas purification treatment box body (1). A smoke guide port (4) and a connecting port (5) are provided on the lower end surface of the partition plate (2). A water pump (6) is fixedly connected to the outer surface of the flue gas purification treatment box body (1). The bottom suction pipe of the water pump (6) is fixed to the bottom of the flue gas purification treatment box body (1). The top of the water pump (6) is... Two sets of conduits (8) are fixedly connected to the lower surface of the water guide pipe (7). A horizontal pipe (80) is fixed to the lower end of the conduit (8). An annular spray pipe (9) is fixedly connected to the outer end of the horizontal pipe (80). A spray nozzle (10) is provided on the lower surface of the annular spray pipe (9). A filter bucket (11) is fixed to the inner surface of the upper end of the flue gas purification treatment box body (1). A filter packing layer (12) and an activated carbon adsorption layer (13) are provided on the inner side of the filter bucket (11).

2. The flue gas purification device for thermal power plants according to claim 1, characterized in that: The bottom of the filter bucket (11) is inserted into the inner surface of the flue gas purification treatment box body (1). The lower end surface of the filter bucket (11) is provided with an annular seat (14). The surface of the annular seat (14) is fixedly connected to the upper surface of the flue gas purification treatment box body (1) by bolts.

3. The flue gas purification device for thermal power plants according to claim 1, characterized in that: An inlet pipe (15) is provided on the inner surface of the outer end of the flue gas purification treatment box body (1), and the inlet pipe (15) is located on the upper side of the flue gas purification treatment box body (1). An outlet pipe (16) is provided on the inner surface of the outer end of the flue gas purification treatment box body (1), and the outlet pipe (16) is located on the lower side of the flue gas purification treatment box body (1).

4. The flue gas purification device for thermal power plants according to claim 1, characterized in that: The conduit (8) is interconnected with the annular spray pipe (9), and its spray nozzles (10) are evenly and densely arranged in a circle on the lower surface of the annular spray pipe (9).

5. The flue gas purification device for thermal power plants according to claim 1, characterized in that: The smoke inlet (4) is a circular structure, and four groups are distributed on the surface of the partition plate (2).

6. The flue gas purification device for thermal power plants according to claim 1, characterized in that: The connecting port (5) adopts a strip-shaped structure and is distributed at the bottom of the partition plate (2).

7. The flue gas purification device for thermal power plants according to claim 1, characterized in that: The filter bucket (11) adopts a variable diameter bucket structure, with a constricting structure at the bottom and an expanding structure at the top.

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