Flue gas desulfurization and dust removal filter

Abstract

The utility model discloses a flue gas desulfurization and dust removal filter which comprises a box body, a desulfurization box is fixedly installed at the bottom in the box body, a transmission box is fixedly connected to the position, close to the bottom, of one side of the box body, a motor is fixedly installed at the bottom of one side in the transmission box, a first transverse rod is arranged on one side of the motor, and a second transverse rod is arranged on the other side of the motor. And a protection box is fixedly connected to the center of the top of the desulfurization box. According to the flue gas desulfurization and dust removal filter, through the design of a motor, a first cross rod, a second cross rod, stirring rods and a first transmission wheel, the motor drives the first cross rod to rotate, and under the linkage action of a belt and the transmission wheel, the second cross rod synchronously rotates to drive the two groups of stirring rods to fully stir a desulfurization agent in a desulfurization box; the contact area and the reaction opportunity of the desulfurizing agent and sulfur oxide in the flue gas are greatly increased, the desulfurization efficiency bottleneck caused by non-uniform distribution of the desulfurizing agent and insufficient reaction in the traditional equipment is effectively broken through, and the desulfurization reaction rate and effect are remarkably improved.

Description

A flue gas desulfurization and dust removal filter Technical Field

[0001] This utility model relates to the field of dust removal filter technology, specifically a flue gas desulfurization and dust removal filter. Background Technology

[0002] Flue gas desulfurization and dust removal filters are environmental protection devices specifically designed to treat flue gas generated during industrial production and energy conversion processes. They primarily purify sulfur oxides (such as sulfur dioxide) and particulate matter contained in the flue gas. With a wide range of applications, they cover many industries with high-pollution flue gas emissions, including power generation, steel, cement, chemicals, and non-ferrous metal smelting, helping enterprises achieve cleaner production and promoting sustainable ecological and environmental development.

[0003] Currently, some flue gas desulfurization and dust removal filters perform poorly in desulfurization operations. Their desulfurization efficiency is low, and they lack an effective mechanism to fully remove sulfur oxides from flue gas, leading to the leakage of large amounts of sulfur-containing pollutants, exacerbating air pollution. The processing speed is slow, failing to keep up with the industrial flue gas emission rate. Flue gas accumulates within the equipment, slowing down the overall production pace. After a period of use, the internal filter screens are prone to overload, with dust rapidly accumulating, obstructing flue gas flow, significantly increasing equipment operating resistance, and consequently raising energy consumption. Furthermore, the filter screens' tendency to clog forces companies to frequently shut down for maintenance, increasing operating costs and severely impacting production continuity and stability, failing to meet the high-efficiency and environmental protection requirements of modern industry. Therefore, we propose a new flue gas desulfurization and dust removal filter. Summary of the Invention

[0004] The purpose of this utility model is to provide a flue gas desulfurization and dust removal filter to solve the problems mentioned in the background art, such as the current flue gas desulfurization and dust removal filters performing poorly in desulfurization operations, having low desulfurization efficiency, lacking an effective mechanism to fully react and remove sulfur oxides in flue gas, resulting in the leakage of a large amount of sulfur-containing pollutants, aggravating air pollution, slow processing speed, and inability to keep up with the industrial flue gas emission rate, flue gas accumulation in the equipment, slowing down the overall production rhythm, the internal filter screen is prone to overload after a period of use, dust accumulates rapidly, obstructs flue gas flow, significantly increases the equipment operating resistance, and energy consumption rises accordingly. Moreover, the easy clogging of the filter screen forces enterprises to frequently shut down for maintenance, which not only increases operating costs but also seriously affects the continuity and stability of production, making it difficult to meet the high-efficiency and environmental protection requirements of modern industry.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a flue gas desulfurization and dust removal filter, comprising a housing, a desulfurization box fixedly installed at the bottom of the housing, a transmission box fixedly connected to the bottom side of one side of the housing, a motor fixedly installed at the bottom side of one side of the transmission box, a first crossbar provided on one side of the motor, a protective box fixedly connected to the center of the top of the desulfurization box, a second crossbar provided at the upper end of the first crossbar, and stirring rods fixedly installed on the surfaces of the first and second crossbars corresponding to the interior of the housing, with the surfaces of the first and second crossbars fixed on one side. A first transmission wheel is installed, and a transmission rod is set at the top of the transmission box. A second transmission wheel is fixedly installed on one side of the surface of the second crossbar and the transmission rod. The two first transmission wheels and the two second transmission wheels are connected by belt drive. A vertical rod is set in the center of the protective box. A second gear is fixedly installed near the center of the surface of the vertical rod. A first gear is meshed with one side of the second gear. An intercepting mesh plate is fixedly installed near the top of the surface of the vertical rod. An induced draft fan is fixedly installed in the center of the top of the box. Two dust filter plates are fixedly connected to the lower end of the box corresponding to the induced draft fan.

[0006] Compared with the prior art, the beneficial effects of this utility model are:

[0007] This flue gas desulfurization and dust removal filter, through the design of a motor, a first horizontal bar, a second horizontal bar, a stirring rod, and a first transmission wheel, uses a motor to drive the first horizontal bar to rotate. Under the linkage of the belt and the transmission wheel, the second horizontal bar rotates synchronously, driving two sets of stirring rods to fully agitate the desulfurizing agent within the desulfurization chamber. This significantly increases the contact area and reaction opportunities between the desulfurizing agent and sulfur oxides in the flue gas, effectively breaking through the desulfurization efficiency bottleneck caused by uneven distribution and insufficient reaction of the desulfurizing agent in traditional equipment. It significantly improves the desulfurization reaction rate and effect, enabling the rapid and complete conversion and absorption of sulfur oxides in the flue gas, reducing the emission of harmful substances, and ensuring compliance with emission standards. This design reduces desulfurizing agent consumption, providing an efficient and economical solution for industrial flue gas desulfurization. The design incorporates a drive rod, a second drive wheel, a vertical rod, a first gear, a second gear, and an intercepting mesh plate. During rotation, the second horizontal rod, through the linkage mechanism between the second drive wheel and the belt, drives the drive rod to simultaneously rotate the first gear and the second gear. This, in turn, causes the vertical rod to rotate the intercepting mesh plate. The rotating mesh plate actively faces the incoming flue gas, utilizing centrifugal force and airflow disturbance to initially capture and intercept large particles and some fine dust in the flue gas, effectively expanding the capture range for dust of different particle sizes and improving the flue gas pretreatment effect. This design significantly reduces the dust content in the flue gas before it enters the filter plate, significantly reducing the filtration load on the filter plate. It avoids problems such as filter plate clogging and sudden increase in resistance caused by rapid dust accumulation, extending the service life of the filter plate, reducing the frequency of cleaning and replacement, lowering equipment maintenance costs and downtime, and ensuring long-term stable and efficient operation of the equipment. This provides reliable support for the efficient purification and low-cost maintenance of industrial flue gas. Attached Figure Description

[0008] Figure 1 is a three-dimensional structural view of this utility model;

[0009] Figure 2 is a cross-sectional view of the structure of this utility model;

[0010] Figure 3 is a partially enlarged schematic diagram of A in Figure 2 of this utility model;

[0011] Figure 4 is a bottom view of the structure of the connecting frame of this utility model.

[0012] In the diagram: 1. Box body; 2. Desulfurization box; 3. Transmission box; 4. Motor; 5. Protective box; 6. Horizontal bar No. 1; 7. Horizontal bar No. 2; 8. Stirring rod; 9. Transmission wheel No. 1; 10. Transmission rod; 11. Transmission wheel No. 2; 12. Belt; 13. Vertical rod; 14. Gear No. 1; 15. Gear No. 2; 16. Interception mesh plate; 17. Connecting frame; 18. Air injection pipe; 19. Dust filter plate; 20. Air outlet pipe; 21. Exhaust fan; 22. Exhaust pipe. Detailed Implementation

[0013] 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.

[0014] Please refer to Figures 1-4. This utility model provides a technical solution: a flue gas desulfurization and dust removal filter, including a housing 1, a desulfurization box 2 fixedly installed at the bottom of the housing 1, a transmission box 3 fixedly connected to the bottom side of one side of the housing 1, a motor 4 fixedly installed at the bottom side of one side of the transmission box 3, a first crossbar 6 provided on one side of the motor 4, a protective box 5 fixedly connected to the center of the top of the desulfurization box 2, a second crossbar 7 provided at the upper end of the first crossbar 6, stirring rods 8 fixedly installed on the surfaces of the first crossbar 6 and the second crossbar 7 corresponding to the interior of the housing 1, and a first transmission wheel 9 fixedly installed on one side of the surfaces of the first crossbar 6 and the second crossbar 7. A transmission rod 10 is installed at the top inside the transmission box 3. A second transmission wheel 11 is fixedly installed on one side of the surface of the second crossbar 7 and the transmission rod 10. The two first transmission wheels 9 and the two second transmission wheels 11 are connected by a belt 12. A vertical rod 13 is installed at the center inside the protective box 5. A second gear 15 is fixedly installed at the center of the surface of the vertical rod 13. A first gear 14 is meshed on one side of the second gear 15. An intercepting mesh plate 16 is fixedly installed at the top of the surface of the vertical rod 13. An induced draft fan 21 is fixedly installed at the center of the top inside the box 1. Two dust filter plates 19 are fixedly connected to the lower end of the induced draft fan 21 inside the box 1.

[0015] One end of each of the first crossbar 6 and the second crossbar 7 passes through the interior of the transmission box 3, the box body 1, and the desulfurization box 2. The motor 4 is fixedly connected to a drive shaft through its output end on one side. One side of the drive shaft is fixedly connected to the other end of the first crossbar 6. The other end of the second crossbar 7 is movably connected to a bearing fixedly installed near the center on one side of the transmission box 3. The motor 4 directly drives the first crossbar 6 to rotate, and the power is synchronously transmitted to the second crossbar 7 through the belt 12 transmission system, realizing dual-shaft linkage stirring. The dual-shaft layout can expand the mixing area of ​​the desulfurizing agent and the flue gas, so that the stirring rod 8 can form convective disturbances on the liquid in the desulfurization box 2, improve the contact efficiency between the desulfurizing agent and sulfur dioxide in the flue gas, avoid local reaction dead zones, and ensure the uniformity and efficiency of the desulfurization reaction.

[0016] The other end of the transmission rod 10 is movably connected to a bearing fixedly installed on the top side of the transmission box 3. One end of the transmission rod 10 passes through the interior of the transmission box 3, the box 1, and the protective box 5 in sequence and is fixedly connected to the center of one side of the first gear 14. As the core component of power transmission, the transmission rod 10 achieves stable rotation through the fixed support of the bearing. Its design of passing through multiple boxes 1 accurately transmits the power generated by the motor 4 to the gear transmission system inside the box 1. This structure ensures the continuity and synchronization of power transmission, so that the rotation speed of the intercepting mesh plate 16 matches the stirring frequency of the stirring rod 8, optimizes the synergistic efficiency of flue gas pretreatment and desulfurization reaction, and reduces energy loss in the power transmission process.

[0017] The bottom of the vertical rod 13 is movably connected to the bearing fixedly installed at the center of the top of the desulfurization box 2. A connecting frame 17 is fixedly connected at the center of the box 1. The upper end of the vertical rod 13 extends to the outside of the protective box 5 and is movably connected to the bearing fixedly installed at the center of the bottom of the connecting frame 17. The vertical rod 13 adopts a double bearing support structure. The bottom bearing is fixed to the top of the desulfurization box 2 to withstand the centrifugal force of rotation. The top bearing is axially positioned through the connecting frame 17 to ensure that the vertical rod 13 maintains vertical stability when rotating at high speed. This design can reduce the mechanical vibration of the vertical rod 13, extend the service life of the intercepting screen plate 16, and avoid gear meshing failure caused by shaft offset, thus ensuring the long-term reliable operation of the flue gas pre-dust removal system.

[0018] The mesh size of the bottom dust filter plate 19 is larger than that of the top dust filter plate 19. The double-layer dust filter plate 19 adopts a graded filtration structure of coarse filtration and fine filtration. The gradient filtration improves the filtration accuracy and reduces the frequency of filter material replacement and maintenance costs.

[0019] A gas injection pipe 18 is fixedly installed on the other side of the box 1 near the center. The lower end of the gas injection pipe 18 passes through the interior of the box 1 and the desulfurization box 2 in sequence. A gas outlet pipe 20 is fixedly connected to one side of the top of the desulfurization box 2, and a gas exhaust pipe 22 is fixedly connected to one side of the top of the box 1. The gas injection pipe 18 adopts a bottom straight insertion design, so that the flue gas is injected into the desulfurization box 2 below the liquid surface in a tangential or radial manner. By utilizing the countercurrent contact between the gas and the desulfurization liquid during the gas rise, the gas-liquid mass transfer efficiency is enhanced. The gas outlet pipe 20 is set on the top side of the desulfurization box 2, which can prevent the liquid from being carried out with the gas. At the same time, the micro negative pressure environment generated by the liquid surface fluctuation promotes the extension of the residence time of the flue gas in the desulfurization box 2. This layout significantly improves the sufficiency of the desulfurization reaction and reduces the escape of unreacted flue gas.

[0020] A feed pipe is fixedly connected to one side of the top of the front surface of the desulfurization tank 2, and the front end of the feed pipe extends to the outside of the tank body 1. An exhaust pipe 22 is fixedly connected to one side of the bottom of the front surface of the desulfurization tank 2, and the front end of the exhaust pipe 22 extends to the outside of the tank body 1. The top feed pipe is designed to facilitate the quantitative replenishment of desulfurizing agent such as limestone slurry and avoid the interference of liquid impact on the stirring system inside the tank. The bottom exhaust pipe 22 is used to discharge the by-products generated by the desulfurization reaction.

[0021] During operation, flue gas is injected into the desulfurization tank 2 below the liquid level via the injection pipe 18. Simultaneously, the motor 4 starts and drives the first crossbar 6 to rotate. Under the linkage of the belt 12 and the first transmission wheel 9, the second crossbar 7 rotates synchronously. The two sets of stirring rods 8 then powerfully agitate the desulfurizing agent in the desulfurization tank 2, creating convective disturbances. This ensures that the desulfurizing agent and flue gas are fully mixed and in contact over a large area, accelerating the chemical reaction between sulfur oxides and the desulfurizing agent, and efficiently completing the desulfurization process. When the second crossbar 7 rotates, the second transmission wheel 11 on its surface drives the transmission rod 10 to rotate via the belt 12. The transmission rod 10 further transmits power. The first gear 14 meshes with the second gear 15, driving the vertical rod 13 to rotate. This causes the intercepting mesh plate 16 to rotate at high speed. The rotating intercepting mesh plate 16 actively faces the incoming flue gas and uses centrifugal force and airflow disturbance to perform comprehensive and efficient preliminary interception of large particles and some fine dust in the flue gas, significantly reducing the dust content in the flue gas. Subsequently, the pre-treated flue gas passes through the double-layer dust filter plate 19. The bottom dust filter plate 19 performs coarse filtration of the flue gas, intercepting larger dust particles, while the top dust filter plate 19 performs fine filtration, further removing tiny particles. The overall filtration accuracy is improved through gradient filtration.

[0022] In summary, this flue gas desulfurization and dust removal filter, through the design of motor 4, first crossbar 6, second crossbar 7, stirring rod 8, and first transmission wheel 9, uses motor 4 to drive the first crossbar 6 to rotate. Under the linkage of belt 12 and transmission wheel, the second crossbar 7 rotates synchronously, driving the two sets of stirring rods 8 to fully agitate the desulfurizing agent in the desulfurization box 2. This significantly increases the contact area and reaction opportunities between the desulfurizing agent and sulfur oxides in the flue gas, effectively breaking through the desulfurization efficiency bottleneck caused by uneven distribution and insufficient reaction of the desulfurizing agent in traditional equipment. It significantly improves the desulfurization reaction rate and effect, enabling sulfur oxides in the flue gas to be quickly and thoroughly converted and absorbed, reducing the emission of harmful substances. While ensuring compliance with emission standards, it also reduces the cost of desulfurization. The design of the sulfur-reducing agent consumption provides an efficient and economical solution for industrial flue gas desulfurization. The transmission rod 10, the second transmission wheel 11, the vertical rod 13, the first gear 14, the second gear 15, and the intercepting mesh plate 16 are all designed so that, during the rotation of the second horizontal rod 7, the second transmission wheel 11 and the belt 12 work together to drive the transmission rod 10 to drive the first gear 14 to mesh with the second gear 15 and rotate synchronously. This causes the vertical rod 13 to drive the intercepting mesh plate 16 to rotate. The rotating intercepting mesh plate 16 actively faces the incoming flue gas, utilizing centrifugal force and airflow disturbance to initially capture and intercept large particles and some fine dust in the flue gas, effectively expanding the capture range for dust of different particle sizes and improving the flue gas pretreatment effect. This design significantly reduces the dust content in the flue gas before it enters the dust filter plate 19, substantially reducing the filtration load on the dust filter plate 19. It avoids problems such as blockage and sudden increase in resistance caused by rapid dust accumulation in the dust filter plate 19, extends the service life of the dust filter plate 19, reduces the frequency of cleaning and replacement of the dust filter plate 19, reduces equipment maintenance costs and downtime, and ensures long-term stable and efficient operation of the equipment, providing reliable support for efficient purification and low-cost maintenance of industrial flue gas.

[0023] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A flue gas desulfurization and dust removal filter, comprising a housing (1), characterized in that: A desulfurization box (2) is fixedly installed at the bottom of the box (1). A transmission box (3) is fixedly connected to the bottom side of one side of the box (1). A motor (4) is fixedly installed at the bottom side of one side of the transmission box (3). A first crossbar (6) is provided on one side of the motor (4). A protective box (5) is fixedly connected to the center of the top of the desulfurization box (2). A second crossbar (7) is provided at the upper end of the first crossbar (6). A stirring rod (8) is fixedly installed on the surface of the first crossbar (6) and the second crossbar (7) corresponding to the inside of the box (1). A first transmission wheel (9) is fixedly installed on the side of the surface of the first crossbar (6) and the second crossbar (7). A transmission rod (10) is provided at the top of the transmission box (3). The second crossbar (7) and the transmission rod (10) are both fixedly installed with a second transmission wheel (11) on one side. The two first transmission wheels (9) and the two second transmission wheels (11) are connected by a belt (12). A vertical rod (13) is set in the center of the protective box (5). A second gear (15) is fixedly installed on the surface of the vertical rod (13) near the center. A first gear (14) is meshed on one side of the second gear (15). An intercepting net plate (16) is fixedly installed on the surface of the vertical rod (13) near the top. A blower (21) is fixedly installed in the center of the top of the box (1). Two dust filter plates (19) are fixedly connected to the lower end of the blower (21) inside the box (1).

2. The flue gas desulfurization and dust removal filter according to claim 1, characterized in that: One end of the first crossbar (6) and the second crossbar (7) pass through the interior of the transmission box (3), the box body (1) and the desulfurization box (2) in sequence. The motor (4) is fixedly connected to the drive shaft through the output end on one side. One side of the drive shaft is fixedly connected to the other end of the first crossbar (6). The other end of the second crossbar (7) is movably connected to the bearing fixedly installed on one side of the transmission box (3) near the center.

3. The flue gas desulfurization and dust removal filter according to claim 1, characterized in that: The other end of the transmission rod (10) is movably connected to a bearing fixedly installed on the top side of the transmission box (3). One end of the transmission rod (10) passes through the interior of the transmission box (3), the box body (1) and the protective box (5) in sequence and is fixedly connected to the center of one side of the first gear (14).

4. The flue gas desulfurization and dust removal filter according to claim 1, characterized in that: The bottom of the vertical rod (13) is movably connected to the bearing fixedly installed at the center of the top of the desulfurization box (2). A connecting frame (17) is fixedly connected at the center of the box body (1). The upper end of the vertical rod (13) extends through to the outside of the protective box (5) and is movably connected to the bearing fixedly installed at the center of the bottom of the connecting frame (17).

5. A flue gas desulfurization and dust removal filter according to claim 1, characterized in that: The mesh size of the bottom dust filter plate (19) is larger than that of the top dust filter plate (19).

6. The flue gas desulfurization and dust removal filter according to claim 1, characterized in that: An air injection pipe (18) is fixedly installed on the other side of the box (1) near the center. The lower end of the air injection pipe (18) passes through the interior of the box (1) and the desulfurization box (2) in sequence. An air outlet pipe (20) is fixedly connected to one side of the top of the desulfurization box (2), and an exhaust pipe (22) is fixedly connected to one side of the top of the box (1).

7. The flue gas desulfurization and dust removal filter according to claim 1, characterized in that: A feed pipe is fixedly connected to the top of the front surface of the desulfurization box (2) on one side, and the front end of the feed pipe extends to the outside of the box body (1). An exhaust pipe (22) is fixedly connected to the bottom of the front surface of the desulfurization box (2) on one side, and the front end of the exhaust pipe (22) extends to the outside of the box body (1).

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