A flue gas treatment device having a filtering mechanism

Abstract

The utility model relates to a flue gas treatment device with filtering mechanism relates to flue gas treatment equipment technical field. It contains: main jar body, drive assembly, spray assembly, first filter piece and second filter piece, main jar body is opened with the cavity intercommunication's air inlet pipe and air outlet pipe, drive assembly is assembled in the cavity, it is provided with hollow rotating shaft, spray assembly is assembled on hollow rotating shaft, first filter piece is assembled on hollow rotating shaft, and second filter piece is assembled between the inner wall of main jar body and drive assembly, second filter piece includes: the filter plate of setting between the inner wall of main jar body and drive assembly, separates first filter groove and second filter groove. Adopt above technical scheme, through rotating spray purification removes flue gas impurity and carries out rotating filtration simultaneously, realizes the efficient separation of liquid and impurity, forms dynamic flue gas purification, improves the filtering efficiency of liquid and guarantees the quality of circulating liquid, and avoids the impurity blockage, strengthens the spray purification effect.

Description

Technical Field

[0001] This utility model relates to the technical field of flue gas treatment equipment, and specifically to a flue gas treatment device with a filtration mechanism. Background Technology

[0002] In the field of industrial waste gas treatment, flue gas desulfurization (FGD) refers to the removal of sulfur oxides from flue gas or other industrial waste gases. The most widely used commercial technology globally is the calcium process. Based on the dry and wet states of the absorbent and desulfurization products during the desulfurization process, desulfurization technologies can be further classified into wet, dry, and semi-dry methods. Wet FGD technology uses a solution or slurry containing an absorbent to desulfurize and treat the desulfurization products in a wet state. This method has advantages such as fast desulfurization reaction speed, simple equipment, and high desulfurization efficiency.

[0003] During the daily operation of coal-fired power plants, a large amount of flue gas containing pollutants is generated. Although existing flue gas purification technologies can achieve basic purification goals by removing some impurities from the flue gas through spray purification, the water used for spray purification needs to be filtered and recycled using a circulating pump. However, as coal-fired power plants operate continuously for extended periods, the filter screens inevitably become clogged, severely affecting the water filtration efficiency, reducing the quality of the circulating water, and thus weakening the effect of flue gas spray purification, failing to effectively guarantee desulfurization efficiency. Furthermore, filter clogging can increase the load on the circulating pumps, causing accelerated equipment wear and tear, and even triggering equipment failures, affecting the normal and stable operation of the coal-fired power plant. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings and deficiencies of the existing technology by providing a flue gas treatment device with a filtration mechanism. This device removes impurities from the flue gas through rotary spray purification while simultaneously performing rotary filtration. This improves the filtration efficiency of the liquid, ensures the quality of the circulating liquid, avoids clogging by impurities, and enhances the spray purification effect.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: a flue gas treatment device with a filtration mechanism, comprising:

[0006] The main tank has a cavity inside, and an air inlet pipe and an air outlet pipe that are respectively connected to the cavity are provided on the main tank.

[0007] A drive assembly is assembled inside the cavity, and a hollow rotating shaft is provided on the drive assembly;

[0008] A spray assembly is connected and mounted on the hollow rotating shaft, and the drive assembly drives the spray assembly to rotate and spray to purify the flue gas.

[0009] A first filter element is assembled on the hollow rotating shaft, and the drive assembly drives the first filter element to rotate and filter impurities; and

[0010] The second filter element is assembled between the inner wall of the main tank and the drive assembly, and is used to filter impurities and store liquid.

[0011] The second filter element includes: a filter plate, a first filter tank disposed between the filter plate and the drive assembly for storing liquid, and a second filter tank disposed between the filter plate and the inner wall of the main tank for blocking impurities;

[0012] When the driving component draws the liquid from the first filter tank into the hollow rotating shaft, it drives the hollow rotating shaft to rotate. The hollow rotating shaft drives the spray component to rotate and spray the flue gas entering from the air inlet pipe to purify the flue gas, which is then discharged from the air outlet pipe. At the same time, it drives the first filter element to rotate, filter impurities, and throw them into the second filter tank for filtration.

[0013] The present invention further provides that the spray assembly includes: a first spray rod fixedly mounted on the end of the hollow rotating shaft, and a second spray rod fixedly mounted on the side of the hollow rotating shaft near the first filter element.

[0014] The present invention further includes the following: the second spray rod includes: a first fixed rod disposed on the side of the hollow rotating shaft near the first spray rod; a second fixed rod disposed on the side of the hollow rotating shaft near the first filter element; and one or more spray pipes disposed between the first fixed rod and the second fixed rod.

[0015] The present invention further includes, in that the flue gas treatment device with a filtration mechanism, a reaction packing material disposed between the first spray bar and the second spray bar.

[0016] The present invention further provides that the reaction packing is provided with a clearance hole to avoid the rotation of the hollow rotating shaft.

[0017] The present invention further provides that the driving component includes: a sealed chamber, a driving component disposed within the sealed chamber, a first gear disposed on the output shaft of the driving component, and a second gear sleeved on the hollow rotating shaft and meshing with the first gear for driving the hollow rotating shaft to rotate.

[0018] The present invention further includes, in addition to, an empty container disposed within the sealed chamber and communicating with the hollow rotating shaft, a water pump unit disposed within the first filter tank, and a delivery pipe disposed between the empty container and the water pump unit.

[0019] The present invention further includes, in addition to, a combustion chamber disposed in the cavity near the spray assembly and connected to the exhaust pipe; one or more heating tubes are disposed in the combustion chamber, and the flue gas sprayed by the spray assembly is transported to the combustion chamber for heating reaction and discharged from the exhaust pipe.

[0020] The present invention further provides that the side of the combustion chamber facing the spray assembly is provided with a through hole for the inflow of flue gas.

[0021] The present invention further includes a switch part on the main tank body that communicates with the second filter tank and is used for cleaning impurities.

[0022] After adopting the above technical solution, the beneficial effects of this utility model are as follows: In this utility model, the spray assembly, the first filter element, and the second filter element are respectively assembled on the hollow rotating shaft. The spray assembly and the first filter element rotate synchronously with the hollow rotating shaft. The second filter element includes a filter plate, a first filter tank, and a second filter tank. The filter plate is arranged in a ring between the inner wall of the main tank and the drive assembly, separating the first filter tank and the second filter tank. The drive assembly draws the liquid from the first filter tank into the hollow rotating shaft while simultaneously driving the hollow rotating shaft to rotate. The hollow rotating shaft drives the spray assembly to rotate and spray the flue gas entering from the air inlet pipe. The purified flue gas is discharged through the outlet pipe. The sprayed liquid after dust removal falls on the surface of the first filter element, where impurities are intercepted, ensuring that spraying and filtration start synchronously. The liquid flows into the first filter tank for storage. Then, the centrifugal force generated by the hollow rotating shaft driving the first filter element to rotate drives the liquid to flush the first filter element and throw the impurities into the second filter tank for collection, avoiding blockage and increased load. The liquid flows back to the first filter tank for storage, achieving efficient separation of liquid and impurities, forming dynamic flue gas purification, effectively ensuring the quality of the circulating liquid, improving purification efficiency and liquid resource utilization, and enhancing the spray purification effect. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of a flue gas treatment device with a filtration mechanism;

[0025] Figure 2 This is another structural schematic diagram of a flue gas treatment device with a filtration mechanism;

[0026] Figure 3This is a structural schematic diagram of the spray assembly;

[0027] Figure 4 This is a schematic diagram of the drive component.

[0028] Explanation of reference numerals in the attached drawings: 100, main tank body; 110, cavity; 120, air inlet pipe; 130, air outlet pipe; 140, switch unit; 200, drive assembly; 210, hollow rotating shaft; 220, sealed chamber; 230, drive component; 240, gear one; 250, gear two; 260, empty container; 270, water pump unit; 280, conveying pipe; 300, spray assembly; 310, first spray bar; 311, first nozzle; 320, second spray bar; 321, first fixing rod; 322, second fixing rod; 323, spray pipe; 3231, second nozzle; 400, first filter element; 500, second filter element; 510, filter plate; 520, first filter tank; 530, second filter tank; 600, reaction packing; 700, combustion chamber; 710, heating tube body; 720, through hole. Detailed Implementation

[0029] The present invention will be further described in detail below with reference to the accompanying drawings.

[0030] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive element, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

[0031] This embodiment relates to a flue gas treatment device with a filtration mechanism, referring to... Figures 1-3 It includes a main tank 100, a drive assembly 200, a spray assembly 300, a first filter element 400, and a second filter element 500.

[0032] The main tank 100 has a cavity 110, and the main tank 100 is also equipped with an inlet pipe 120 and an outlet pipe 130 communicating with the cavity 110. The main tank 100 provides a closed space for flue gas treatment. The flue gas enters the cavity 110 through the inlet pipe 120, ensuring that the flue gas is in full contact with the spray liquid within the cavity 110. The purified flue gas is discharged through the outlet pipe 130, forming a purified flow path. The drive assembly 200 is located at the bottom of the cavity 110, and a hollow rotating shaft 210 is provided on the drive assembly 200. The drive assembly 200 drives the hollow rotating shaft 210 to rotate and transport the liquid to the spray assembly 300. At the same time, the hollow rotating shaft 210 drives the spray assembly 300 and the first filter element 400 to rotate. The spray assembly 300 is connected to the hollow rotating shaft 210, and the first filter element 400 is disposed on the hollow rotating shaft 210. Driven by the drive assembly 200, the hollow rotating shaft 210 rotates, causing the spray assembly 300 to rotate and spray. The sprayed liquid comes into full contact with the flue gas, removing particulate matter, harmful gases, and other impurities from the flue gas through physical adsorption and dissolution, achieving preliminary purification. Simultaneously, the hollow rotating shaft 210 drives the first filter element 400 to rotate, using centrifugal force to throw out dust, solid particles, and droplets from the flue gas after contact with the sprayed liquid. This separation efficiency is higher than static filtration, preventing impurities from clogging the filter channels. Specifically, the first filter element 400 is a dust filter plate. In other embodiments, the first filter element 400 can also be other filter materials.

[0033] Reference Figure 2 The second filter element 500 is disposed between the inner wall of the main tank 100 and the drive assembly 200 to store liquid and filter impurities. Specifically, the second filter element 500 includes a filter plate 510, a first filter tank 520, and a second filter tank 530. The filter plate 510 is arranged in a ring between the inner wall of the main tank 100 and the drive assembly 200, separating the first filter tank 520 and the second filter tank 530, allowing the sprayed liquid to seep from the second filter tank 530 into the first filter tank 520, while blocking impurities, thus realizing the recycling of liquid and the interception of impurities. The first filter tank 520 is disposed between the filter plate 510 and the drive assembly 200, storing the sprayed liquid filtered by the first filter element 400, which is then drawn by the drive assembly 200 to the hollow rotating shaft 210 to form a liquid reserve for circulating spraying. The second filter tank 530 is located between the filter plate 510 and the inner wall of the main tank 100. It receives impurities and sprayed liquid ejected by the first filter element 400. The filter plate 510 separates the liquid from the impurities, causing the impurities to be retained in the tank for easy subsequent cleaning. The filtered sprayed liquid flows back into the first filter tank 520, while the impurities are ejected into the second filter tank 530, achieving solid-liquid separation and ensuring the cleanliness of the circulating liquid.

[0034] When the drive assembly 200 draws liquid from the first filter tank 520 into the hollow rotating shaft 210, it simultaneously drives the hollow rotating shaft 210 to rotate. The hollow rotating shaft 210 drives the spray assembly 300 to rotate and spray the flue gas entering from the inlet pipe 120 to purify the flue gas, which is then discharged from the outlet pipe 130. The sprayed liquid after dust removal falls on the surface of the first filter element 400, and impurities are intercepted, ensuring that spraying and filtration start synchronously. The liquid flows into the first filter tank 520 for storage. At the same time, the centrifugal force generated by the rotation of the first filter element 400 by the hollow rotating shaft 210 drives the liquid to flush the first filter element 400 and throw the impurities into the second filter tank 530 for collection, avoiding blockage and increased load. The liquid flows back to the first filter tank 520 for storage, realizing efficient separation of liquid and impurities, forming dynamic flue gas purification, and improving purification efficiency and liquid resource utilization.

[0035] In this embodiment, refer to Figures 2-3 The spray assembly 300 includes a first spray bar 310 and a second spray bar 320. The first spray bar 310 is disposed through the top of the hollow rotating shaft 210. Specifically, the first spray bar 310 has multiple first nozzles 311 disposed on the side facing the bottom of the main tank 100, which spray liquid downwards to form a counter-current or cross-flow with the flue gas, thereby enhancing gas-liquid contact and improving dust removal and pollutant absorption efficiency.

[0036] The second spray bar 320 is positioned on the side of the hollow rotating shaft 210 near the first filter element 400, forming a layered spray structure with the top first spray bar 310. (Refer to...) Figure 3 Furthermore, the second spray bar 320 includes a first fixed bar 321, a second fixed bar 322, and spray pipes 323. The first fixed bar 321 is connected to the side of the hollow rotating shaft 210 near the first spray bar 310, and the second fixed bar 322 is connected to the side of the hollow rotating shaft 210 near the first filter element 400. The first fixed bar 321 and the second fixed bar 322 are arranged in parallel, both serving as transition components for liquid input. Four spray pipes 323 are provided, and each pair is connected to both sides between the first fixed bar 321 and the second fixed bar 322, symmetrically distributed, forming an annular spray surface as the hollow rotating shaft 210 rotates. Specifically, the surface of the spray pipes 323 is provided with multiple second nozzles 3231, which spray liquid in all directions, causing the liquid to diffuse in a spiral shape. The spraying combination of the first spray bar 310 and the second spray bar 320, compared to a single spray layer, increases the gas-liquid contact area through three-dimensional spraying, resulting in a highly efficient flue gas purification effect. It should be noted that the spray pipe 323 can also be set with six, eight or more, etc., and there is no need to limit its number here.

[0037] In this embodiment, refer to Figure 2The flue gas treatment device also includes a reaction packing 600, which has a porous structure. The reaction packing 600 is positioned between the first spray bar 310 and the second spray bar 320. The liquid sprayed from the spray bars adheres to the surface of the packing, forming a liquid film or droplets, increasing the contact area between the flue gas and the liquid film, making it easier for pollutants to be adsorbed, thereby improving purification efficiency. Furthermore, after entering from the second spray bar 320, the flue gas must pass through the reaction packing 600 before reaching the first spray bar 310, extending the residence time of the flue gas within the device. This increases the contact time between pollutants and the purification liquid, resulting in more complete adsorption, neutralization, and dissolution reactions.

[0038] Furthermore, the reaction packing 600 is provided with clearance holes to prevent the hollow rotating shaft 210 from rotating, thereby avoiding physical contact between the reaction packing 600 and the hollow rotating shaft 210, which would lead to losses and increased energy consumption.

[0039] In this embodiment, refer to Figure 4 The drive assembly 200 includes a sealed chamber 220, a drive component 230, a first gear 240, and a second gear 250. The sealed chamber 220 is located at the bottom of the main tank 100, providing a sealed containment cavity to prevent spray liquids, reaction liquids, and other liquids from seeping into the drive component 230. The drive component 230 is located within the sealed chamber 220, providing power support to the hollow rotating shaft 210, and is frequency-controlled to match the processing volume of different flue gases. Specifically, the drive component 230 is a servo motor or a motor, etc. The first gear 240 is mounted on the output shaft of the drive component 230, and the second gear 250 is sleeved on the hollow rotating shaft 210 and meshes with the first gear 240. When the drive component 230 drives the first gear 240 to rotate, it drives the second gear 250 and the hollow rotating shaft 210 to rotate synchronously, thereby driving the spray assembly 300 to rotate and spray, increasing the spray area to improve the purification effect, and driving the first filter element 400 to rotate. The centrifugal force generated by the rotation throws the intercepted impurities towards the second filter tank 530.

[0040] Furthermore, referring to Figure 4 The drive assembly 200 also includes an empty container 260, a water pump unit 270, and a delivery pipe 280. The empty container 260 is disposed within the sealed chamber 220 and is connected to the hollow rotating shaft 210. The water pump unit 270 is disposed within the first filter tank 520, and the delivery pipe 280 is disposed between the empty container 260 and the water pump unit 270. The drive unit 230 drives the water pump unit 270 to start drawing water stored in the first filter tank 520. The stored water flows into the empty container 260 through the delivery pipe 280. The empty container 260 serves as a buffer chamber to prevent sudden changes in water pressure caused by the start-up or shutdown of the water pump unit 270 or fluctuations in its rotation speed. The water is then forced into the hollow rotating shaft 210 and distributed to the first spray bar 310 and the second spray bar 320 for spraying, ensuring stable atomization effect of the nozzles.

[0041] In this embodiment, refer to Figure 2The flue gas treatment device also includes a combustion chamber 700, which is located on the side of the cavity 110 near the spray assembly 300 and connected to the outlet pipe 130, forming a treatment process of wet spraying and dry combustion to achieve deep flue gas purification. Multiple heating tubes 710 are installed inside the combustion chamber 700. These heating tubes 710 can heat the flue gas to a high temperature, causing residual organic pollutants, odor gases, and some insoluble substances to undergo thermal decomposition or oxidation reactions, generating harmless products such as carbon dioxide and water. The flue gas sprayed by the spray assembly 300 is transported to the combustion chamber 700 for heating and combustion before being discharged through the outlet pipe 130. The combustion chamber 700, as a deep purification unit for flue gas treatment, removes organic pollutants, odor gases, and some insoluble substances that were not fully treated by the spray assembly 300 through thermal oxidation reactions, further improving purification efficiency.

[0042] Furthermore, a through hole 720 is provided on the side of the combustion chamber 700 facing the spray assembly 300 so that the flue gas flows clearly into the combustion chamber 700 through the through hole 720 for subsequent purification treatment.

[0043] In this embodiment, refer to Figure 1 The main tank 100 is equipped with a switch 140, which is connected to the second filter tank 530. The switch 140 is used to clean impurities and prevent impurities from accumulating and clogging the filter plate 510, which would prevent the water from flowing back to the first filter tank 520. At the same time, if impurities are not cleaned, they will pollute the water quality and cause the water quality to decline.

[0044] The above is only used to illustrate the technical solution of this utility model and not to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A flue gas treatment device with a filtration mechanism, characterized in that, include: The main tank (100) has a cavity (110) inside, and the main tank (100) has an air inlet pipe (120) and an air outlet pipe (130) respectively connected to the cavity (110); A drive assembly (200) is assembled inside the cavity (110), and a hollow rotating shaft (210) is provided on the drive assembly (200); A spray assembly (300) is connected to the hollow rotating shaft (210), and the drive assembly (200) drives the spray assembly (300) to rotate and spray to purify the flue gas; The first filter element (400) is mounted on the hollow rotating shaft (210), and the drive assembly (200) drives the first filter element (400) to rotate and filter impurities; as well as The second filter element (500) is assembled between the inner wall of the main tank (100) and the drive assembly (200) for filtering impurities and storing liquid; The second filter element (500) includes: a filter plate (510), a first filter tank (520) disposed between the filter plate (510) and the drive assembly (200) for storing liquid, and a second filter tank (530) disposed between the filter plate (510) and the inner wall of the main tank (100) for blocking impurities. When the drive assembly (200) draws the liquid from the first filter tank (520) into the hollow rotating shaft (210), it drives the hollow rotating shaft (210) to rotate. The hollow rotating shaft (210) drives the spray assembly (300) to rotate and spray the flue gas entering from the air inlet pipe (120) to purify the flue gas and discharge it from the air outlet pipe (130). At the same time, it drives the first filter element (400) to rotate to filter impurities and throw them into the second filter tank (530) for filtration.

2. The flue gas treatment device with filtering mechanism according to claim 1, characterized in that, The spray assembly (300) includes: a first spray bar (310) fixedly mounted on the end of the hollow rotating shaft (210), and a second spray bar (320) fixedly mounted on the side of the hollow rotating shaft (210) near the first filter element (400).

3. The flue gas treatment device with filtering mechanism according to claim 2, characterized in that, The second spray bar (320) includes: a first fixing rod (321) disposed on the side of the hollow rotating shaft (210) near the first spray bar (310), a second fixing rod (322) disposed on the side of the hollow rotating shaft (210) near the first filter element (400), and a spray pipe (323) disposed between the first fixing rod (321) and the second fixing rod (322).

4. The flue gas treatment device having a filtering mechanism according to claim 2, characterized in that, The flue gas treatment device with a filtration mechanism further includes a reaction packing (600) disposed between the first spray bar (310) and the second spray bar (320).

5. The flue gas treatment device with a filtration mechanism according to claim 4, characterized in that, The reaction packing (600) is provided with a clearance hole to allow the hollow rotating shaft (210) to rotate.

6. The flue gas treatment device having a filtering mechanism according to claim 1, characterized in that, The drive assembly (200) includes: a sealed chamber (220), a drive member (230) disposed in the sealed chamber (220), a first gear (240) disposed on the output shaft of the drive member (230), and a second gear (250) sleeved on the hollow rotating shaft (210), meshing with the first gear (240), and used to drive the hollow rotating shaft (210) to rotate.

7. The flue gas treatment device with filtering mechanism according to claim 6, characterized in that, The drive assembly (200) further includes: an empty container (260) disposed in the sealed chamber (220) and communicating with the hollow rotating shaft (210), a water pump unit (270) disposed in the first filter tank (520), and a delivery pipe (280) disposed between the empty container (260) and the water pump unit (270).

8. The flue gas treatment device having a filtering mechanism according to claim 1, characterized in that, The flue gas treatment device with a filtration mechanism further includes: a combustion chamber (700) disposed in the cavity (110) near the spray assembly (300) and connected to the exhaust pipe (130); one or more heating tubes (710) are disposed in the combustion chamber (700), and the flue gas sprayed by the spray assembly (300) is transported to the combustion chamber (700) for heating reaction and discharged from the exhaust pipe (130).

9. The flue gas treatment device with filtering mechanism according to claim 8, characterized in that, The combustion chamber (700) is also provided with a through hole (720) on the side facing the spray assembly (300) for allowing flue gas to flow in.

10. The flue gas treatment device having a filtering mechanism according to claim 1, characterized in that, The main tank (100) is provided with a switch (140) that communicates with the second filter tank (530) and is used to clean impurities.

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