An end-of-pipe flue gas collector

Abstract

This utility model relates to the field of kiln flue gas treatment technology, specifically disclosing an end-of-line flue gas collector, including a desulfurization tower. The lower part of the desulfurization tower is provided with a flue gas inlet, and the top part of the desulfurization tower is provided with a flue gas outlet. The desulfurization tower is provided with a packing layer, a spray pipe, and a demister arranged sequentially from bottom to top. The packing layer includes a grid plate, a plurality of hollow ball packings, a rotating rod, and scraper arms. The grid plate is horizontally fixed in the inner cavity of the desulfurization tower, and a plurality of hollow ball packings are piled on top of the grid plate. The rotating rod is longitudinally rotatably installed at the center of the grid plate, and a plurality of scraper arms are fixedly connected to the rotating rod. The packing layer structure provided by this utility model can effectively delay the clogging of the packing layer, reduce the frequency of cleaning the packing layer, and improve the convenience of cleaning the packing layer.

Description

Technical Field

[0001] This utility model relates to the field of kiln flue gas treatment technology, and in particular to an end-of-line flue gas collector. Background Technology

[0002] The flue gas produced by lime kilns contains a large amount of sulfur dioxide, which needs to be sprayed through a desulfurization spray tower at the end of the flue gas treatment line before being discharged. The upper part of the desulfurization tower is equipped with spray pipes for spraying limestone slurry. The sulfur dioxide in the flue gas comes into full contact with the limestone slurry, reacting to form calcium sulfate and calcium sulfite, thus achieving desulfurization. To improve the desulfurization effect, a hollow sphere packing layer is installed below the spray pipes to increase the gas-liquid contact area, allowing the flue gas to fully contact the limestone slurry as it passes through the packing layer. However, because the hollow sphere packing is rich in solid substances such as calcium sulfate and calcium sulfite, it easily becomes clogged over time, severely affecting the efficiency of flue gas treatment. Current methods involve shutting down the machine to clean the hollow sphere packing, but the packing adheres tightly to the grid support plate due to the calcium sulfate, making cleaning time-consuming and labor-intensive. Utility Model Content

[0003] To address the problems mentioned in the background art, the purpose of this utility model is to provide an end-of-line flue gas collector.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows:

[0005] An end-of-pipe flue gas collector includes a desulfurization tower. The desulfurization tower has a flue gas inlet at its lower part and a flue gas outlet at its top. Inside the desulfurization tower, from bottom to top, are arranged a packing layer, a spray pipe, and a demister. The packing layer includes a grid plate, several hollow spherical packings, a rotating rod, and scraper arms. The grid plate is horizontally fixed in the inner cavity of the desulfurization tower. Several hollow spherical packings are piled on top of the grid plate. The rotating rod is longitudinally rotatably mounted at the center of the grid plate. Several scraper arms are fixedly connected to the rotating rod. The scraper arms are horizontally arranged and have a clearance fit with the top of the grid plate. The bottom of the rotating rod extends downward to the bottom of the desulfurization tower. The middle part of the bottom plate of the desulfurization tower protrudes upward to form a raised portion. A motor is installed outside the desulfurization tower within the raised portion. The main shaft of the motor is connected to the rotating rod via a magnetic coupling.

[0006] Furthermore, it also includes a three-way valve, a clean water tank, and a circulating pump. The clean water tank is located outside the desulfurization tower. The first and second ports of the three-way valve are respectively connected to the bottom of the desulfurization tower and the clean water tank. The third port of the three-way valve is connected to the suction port of the circulating pump, and the discharge port of the circulating pump is connected to the spray pipe.

[0007] Furthermore, the top of the scraper arm is provided with a plurality of tamping rods at radial intervals along the grid plate, and the tamping rods are arranged longitudinally.

[0008] Furthermore, it also includes an exhaust fan, which is located outside the desulfurization tower, and the flue gas outlet is connected to the intake end of the exhaust fan through a flue pipe.

[0009] Furthermore, the desulfurization tower has an operating hole on its tower wall, which is located above the grid plate, and a sealing door is connected to the operating hole.

[0010] The beneficial effects of this utility model are as follows: During the spraying process, the rotating rod can be driven by a motor to rotate, so that the scraper arm can move continuously, avoiding the hollow ball packing from sticking to the grid plate, which can effectively reduce the cleaning difficulty of the hollow ball packing; the continuous movement of the scraper arm can also prevent the hollow ball packing from accumulating and forming blockages for a long time, which can effectively extend the service life of the hollow ball packing and reduce the cleaning frequency of the hollow ball packing. Attached Figure Description

[0011] Figure 1 This is a perspective view of an embodiment of the present utility model;

[0012] Figure 2 This is a cross-sectional view of an embodiment of the present utility model;

[0013] Figure 3 This is a schematic diagram of the assembly of the grating plate and the rotating rod in an embodiment of this utility model.

[0014] Explanation of the attached diagram numbers: 1. Desulfurization tower; 11. Flue gas inlet; 12. Flue gas outlet; 13. Protrusion; 14. Operating hole; 141. Sealing door; 2. Grating plate; 3. Spray pipe; 4. Demister; 5. Hollow ball packing; 6. Rotating rod; 61. Scraper arm; 611. Tamping rod; 62. Second permanent magnet rotor; 7. Motor; 71. First permanent magnet rotor; 8. Clean water tank; 9. Three-way valve; 10. Circulating pump; 110. Exhaust fan; 120. Exhaust pipe. Detailed Implementation

[0015] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0016] like Figures 1-3As shown, an end-of-line flue gas collector includes a desulfurization tower 1. A flue gas inlet 11 is located at the lower part of the side wall of the desulfurization tower 1, and a flue gas outlet 12 is located at the top of the desulfurization tower 1. Inside the desulfurization tower 1, from bottom to top, a grid plate 2, a spray pipe 3, and a demister 4 are arranged sequentially. The grid plate 2 is located above the flue gas inlet 11, and several hollow spherical packings 5 ​​are piled on the grid plate 2. A rotating rod 6 is vertically and rotatably mounted on the middle of the grid plate 2 via a bearing. The rotating rod 6 penetrates the grid plate 2, and three scraper arms 61 are fixedly connected to the upper part of the rotating rod 6. The three scraper arms 61 are evenly arranged along the circumference of the rotating rod 6 and are arranged laterally with a clearance fit to the top of the grid plate 2. The bottom of the rotating rod 6 extends downwards into the desulfurization tower 1. Below, the bottom plate of the desulfurization tower 1 has a raised section 13 in the middle. A motor 7 is installed inside the raised section 13 on the outside of the desulfurization tower 1. A first permanent magnet rotor 71 is fixedly connected to the main shaft of the motor 7. A second permanent magnet rotor 62 is fixedly connected to the bottom of the rotating rod 6. The first permanent magnet rotor 71 and the second permanent magnet rotor 62 are magnetically coupled. A clean water tank 8 is also provided on the outside of the desulfurization tower 1. A three-way valve 9 is provided above the clean water tank 8. A circulation pump 10 is provided above the three-way valve 9. The first port and the second port of the three-way valve 9 are respectively connected to the bottom of the desulfurization tower 1 and the clean water tank 8. The third port of the three-way valve 9 is connected to the suction port of the circulation pump 10. The discharge port of the circulation pump 10 is connected to the spray pipe 3.

[0017] In practical applications, during flue gas desulfurization, the motor 7 can drive the rotating rod 6 to rotate, allowing the scraper arm 61 to move continuously, preventing the hollow ball packing 5 from sticking to the grid plate 2, which can effectively reduce the cleaning difficulty of the hollow ball packing 5. The continuous movement of the scraper arm 61 can also prevent the hollow ball packing 5 from accumulating and forming blockages for a long time, which can effectively extend the service life of the hollow ball packing 5 and reduce the cleaning frequency of the hollow ball packing 5. At the same time, the flue gas inlet 11 can be closed, allowing the circulating water pump to be connected to the clean water tank 8, so that the spray pipe 3 can spray tap water to flush the hollow ball packing 5, further preventing blockages.

[0018] In this embodiment, the top of the scraper arm 61 is provided with a plurality of tamping rods 611 at radial intervals along the grid plate 2. The tamping rods 611 are arranged longitudinally. The tamping rods 611 can be used to turn over the hollow ball packing 5, further preventing the hollow ball packing 5 from clogging.

[0019] In this embodiment, an exhaust fan 110 is installed outside the desulfurization tower 1, and the flue gas outlet 12 is connected to the suction end of the exhaust fan 110 through the exhaust pipe 120 to ensure that the flue gas has a relatively fast flow rate.

[0020] In this embodiment, an operation hole 14 is provided on the tower wall of the desulfurization tower 1. The operation hole 14 is located above the grid plate 2. A sealing door 141 is connected to the operation hole 14. The operation hole 14 is provided to facilitate the loading and unloading of the hollow ball packing 5.

[0021] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A terminal flue gas collector, comprising a desulfurization tower (1), wherein the lower part of the desulfurization tower (1) is provided with a flue gas inlet (11), the top of the desulfurization tower (1) is provided with a flue gas outlet (12), and the desulfurization tower (1) is provided with a packing layer, a spray pipe (3) and a demister (4) arranged sequentially from bottom to top, characterized in that, The packing layer includes a grid plate (2), a plurality of hollow ball packings (5), a rotating rod (6), and scraper arms (61). The grid plate (2) is horizontally fixed in the inner cavity of the desulfurization tower (1). A plurality of hollow ball packings (5) are piled on the top of the grid plate (2). The rotating rod (6) is longitudinally rotatably installed at the center of the grid plate (2). A plurality of scraper arms (61) are fixedly connected to the rotating rod (6). The scraper arms (61) are horizontally arranged and have a clearance fit with the top of the grid plate (2). The bottom of the rotating rod (6) extends downward to the bottom of the desulfurization tower (1). The middle part of the bottom plate of the desulfurization tower (1) protrudes upward to form a protrusion (13). A motor (7) is installed in the protrusion (13) on the outside of the desulfurization tower (1). The main shaft of the motor (7) is connected to the rotating rod (6) through a magnetic coupling.

2. An end plume collector according to claim 1, wherein, It also includes a three-way valve (9), a clean water tank (8), and a circulating pump (10). The clean water tank (8) is located outside the desulfurization tower (1). The first and second ports of the three-way valve (9) are connected to the bottom of the desulfurization tower (1) and the clean water tank (8), respectively. The third port of the three-way valve (9) is connected to the suction port of the circulating pump (10). The discharge port of the circulating pump (10) is connected to the spray pipe (3).

3. An end plume collector according to claim 1, wherein, The top of the scraper arm (61) is provided with a plurality of tamping rods (611) at radial intervals along the grid plate (2), and the tamping rods (611) are arranged longitudinally.

4. An end plume collector according to claim 1, wherein, It also includes an exhaust fan (110), which is located outside the desulfurization tower (1), and the flue gas outlet (12) is connected to the intake end of the exhaust fan (110) through the exhaust pipe (120).

5. An end plume collector according to claim 1, wherein, The desulfurization tower (1) has an operation hole (14) on its tower wall. The operation hole (14) is located above the grid plate (2). A sealing door (141) is connected to the operation hole (14).

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