Flue gas denitration device

Abstract

The utility model provides a kind of flue gas denitrification device.The kind of flue gas denitrification device, including denitration tower, the bottom of the denitration tower is equipped with waste liquid pool, the bottom of the waste liquid pool is equipped with support plate, the bottom of the support plate is set to T-shaped structure, the bottom of the denitration tower is equipped with multiple groups of through holes.The utility model is equipped with motor by being installed at the top of conical cover, motor is equipped with shaft at the bottom, three groups of stirring devices are installed on the shaft, stirring device is in the internal space of denitration tower, each group of stirring device is made of six groups of symmetrical stirring plate, stirring device can be driven to rotate by the rotation of shaft, so that the internal flue gas of denitration tower can be stirred and disturbed, so that flue gas can fully react with atomized absorption liquid sprayed from conical cover, compared with comparative case, the advantage of the device is that flue gas can be mixed with absorption liquid actively in the process of stirring, so that better flue gas denitrification treatment effect is realized.

Description

Technical Field

[0001] This utility model belongs to the field of flue gas denitrification technology, and in particular relates to a flue gas denitrification device. Background Technology

[0002] Flue gas denitrification is an important measure to reduce nitrogen oxide emissions and prevent environmental pollution. With industrial development and increased environmental awareness, controlling air pollution has become a global issue. In particular, the large amount of nitrogen oxides produced during combustion processes in industrial production, such as thermal power plants and cement plants, has become one of the major sources of air pollution.

[0003] The existing authorized public account CN208906017U discloses a flue gas denitrification device, including a shell, a turbulence plate, and a baffle plate. This flue gas denitrification device, through the design of the shell, turbulence plate, and baffle plate, extends the residence time of flue gas in the pipeline, thereby allowing for more thorough mixing of the reducing agent and flue gas, achieving a relatively ideal denitrification effect without requiring a long flue distance. However, the aforementioned flue gas denitrification device achieves long-term flue gas retention in the pipeline through the installation of the shell, turbulence plate, and baffle plate. This design cannot enable the flue gas to actively react with the reducing agent; it only increases the residence time of the flue gas. Therefore, it is necessary to provide a flue gas denitrification device to solve the above problems. Utility Model Content

[0004] The technical content of this utility model is to provide a flue gas denitrification device.

[0005] To address the aforementioned problems, this utility model provides a flue gas denitrification device, including a denitrification tower. A waste liquid tank is installed at the bottom of the denitrification tower, and a support plate is installed at the bottom of the waste liquid tank. The bottom of the support plate has a T-shaped structure. Multiple sets of through holes are formed at the bottom of the denitrification tower. A conical cover is installed at the top of the denitrification tower via a connecting ring. A motor is installed at the top of the conical cover, and a rotating shaft is installed at the bottom of the motor. The rotating shaft passes through the top and bottom of the conical cover and extends into the interior of the denitrification tower. A stirring device is installed on the outside of the rotating shaft, and a connecting block is installed at the bottom of the rotating shaft. The rotating block is installed in a connecting groove on the top of the rotating block, and the rotating block is installed in a rotating groove inside the rotating seat. The rotating seat is installed on the inner bottom surface of the denitrification tower. A fixing block is installed on the outer bottom of the denitrification tower. An air inlet pipe is installed on the top left side of the denitrification tower. An exhaust pipe is installed on the bottom right side of the denitrification tower. A drain port is opened on the front of the waste liquid pool, and a sealing plug is installed therein. An isolation pipe is installed inside the conical cover. A liquid injection pipe is installed on the left side of the conical cover. Six sets of conduits are installed at the bottom of the conical cover. A liquid pump is installed at the bottom of the conduits. A spray pipe is installed at the bottom of the liquid pump.

[0006] As a further solution of this utility model, three sets of support plates are evenly distributed at the bottom of the waste liquid tank. The support plates are configured with an arc-shaped structure, and the bottom width of the support plates is greater than the top width. Three sets of fixing blocks are evenly distributed on the outer side of the bottom of the denitrification tower. The fixing blocks are configured with an L-shaped structure, and their sides are fixedly connected to the bottom of the outer side of the denitrification tower. Their bottoms are fixedly connected to the top of the waste liquid tank through four sets of fixing bolts. The top of the waste liquid tank is configured with an open structure, and its interior is configured with a hollow structure. The bottom of the denitrification tower is inserted into the interior of the waste liquid tank, and the bottom of the denitrification tower is flush with the inner top surface of the waste liquid tank, thereby ensuring the airtightness of the installation between the denitrification tower and the waste liquid tank.

[0007] As a further solution of this utility model, a pipe cover is installed on the left end of the air inlet pipe installed on the top left side of the denitrification tower, and a pipe cover is also installed on the right end of the exhaust pipe. A set of connecting rings is installed on the outer side of the top of the denitrification tower and the outer side of the bottom of the conical cover. The two sets of connecting rings are fixedly connected by six sets of symmetrical fixing bolts. The bottom of the conical cover is set as a closed structure. A pipe cover is installed on the left end of the liquid injection pipe, which can be used to seal the liquid injection pipe.

[0008] As a further solution of this utility model, the motor is mounted on the top of the conical cover by a fixing bolt. The top and bottom center of the conical cover are provided with through holes adapted to the rotating shaft. The connecting block installed at the bottom of the rotating shaft is configured as a rectangular structure. The rotating groove opened at the top of the rotating block is configured as a rectangular structure adapted to it. The rotating groove opened at the top of the rotating seat is configured as a T-shaped structure. The bottom of the rotating block is configured as a T-shaped structure adapted to it. The bottom of the rotating seat is fixedly connected to the inner bottom surface of the denitrification tower by a fixing bolt. At the same time, the rotating seat is configured as a left-right symmetrical structure so that the rotating block can be installed into the rotating groove opened at the top of the rotating seat.

[0009] As a further solution of this utility model, the bottom of the conical cover is provided with six sets of through holes, and six sets of conduits are fixedly installed therein. The liquid pump is located at the bottom of the conical cover, that is, in the internal top space of the denitrification tower. The bottom of the spray pipe installed at the bottom of the liquid pump has multiple sets of spray nozzles. Three sets of stirring devices are installed on the outside of the rotating shaft. Each set of stirring devices consists of six sets of symmetrical stirring plates. The rotation of the rotating shaft can drive the stirring devices to rotate.

[0010] As a further solution of this utility model, the bottom of the denitrification tower is evenly provided with multiple sets of through holes, the sealing plug is installed in the drain port through a threaded structure, and the outer end of the sealing plug is set with a hexagonal structure so that the operator can rotate it.

[0011] As a further solution of this utility model, the insulating tube is installed in the middle of the conical cover, the top of the insulating tube is fixedly connected to the top surface of the conical cover, the bottom of the insulating tube is fixedly connected to the bottom surface of the conical cover, and the part of the rotating shaft inside the conical cover is inside the insulating tube, thereby providing protection for the rotating shaft.

[0012] Compared with related technologies, the flue gas denitrification device provided by this utility model has the following beneficial effects:

[0013] 1. This utility model features a motor mounted on the top of a conical cover, with a rotating shaft at the bottom of the motor. Three sets of stirring devices are mounted on the rotating shaft, located inside the denitrification tower. Each set of stirring devices consists of six symmetrical stirring plates. The rotation of the rotating shaft drives the stirring devices to rotate, thereby agitating the flue gas inside the denitrification tower. This allows the flue gas to fully react with the atomized absorbent sprayed from the conical cover. Compared to comparative cases, the advantage of this device is that the flue gas can actively mix with the absorbent during the agitation process, thus achieving a better flue gas denitrification treatment effect.

[0014] 2. This utility model installs a connecting block at the bottom of the rotating shaft. The top of the rotating block, which is installed on the inner bottom surface of the denitrification tower, has a slot that matches the connecting block. The connecting block is inserted into the slot, thereby assembling the rotating shaft and the rotating block. The rotating shaft can then be driven by a motor to rotate the stirring device inside the denitrification tower. Since the rotating shaft and the rotating block are connected by an insertion rather than a fixed connection, when it is necessary to remove the rotating shaft and the stirring plate installed on it, only the conical cover needs to be removed from the top of the denitrification tower for cleaning of the rotating shaft, stirring plate, and the internal structure of the denitrification tower. It is also very convenient to install the rotating shaft into the denitrification tower.

[0015] 3. This utility model installs a waste liquid tank at the bottom of the denitrification tower. The top of the waste liquid tank is designed as an open structure, and multiple sets of through holes are opened at the bottom of the denitrification tower. This allows the absorbent liquid that has absorbed nitrates from the flue gas to be concentrated in the interior of the waste liquid tank through the through holes at the bottom of the denitrification tower. The waste liquid can be discharged through the drain port opened on the front of the waste liquid tank, thereby realizing the entire process of absorption and emission of nitrates in the flue gas. This makes the denitrification of flue gas convenient and fast. Attached Figure Description

[0016] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 This is a top-view three-dimensional structural diagram of a flue gas denitrification device according to the present invention;

[0018] Figure 2This is a side-view perspective view of the three-dimensional structure of a flue gas denitrification device according to the present invention;

[0019] Figure 3 This is a schematic diagram of the bottom structure of the denitrification tower of a flue gas denitrification device according to this utility model;

[0020] Figure 4 This is a cross-sectional view of the denitrification tower of a flue gas denitrification device according to the present invention;

[0021] Figure 5 This is a top view of the waste liquid tank of a flue gas denitrification device according to this utility model;

[0022] Figure 6 This is a bottom view schematic diagram of the conical cover structure of a flue gas denitrification device according to the present invention;

[0023] Figure 7 This is a cross-sectional view of the conical cover of a flue gas denitrification device according to the present invention;

[0024] Figure 8 This is a schematic diagram of the connecting block and rotating block structure of a flue gas denitrification device according to this utility model.

[0025] In the diagram: 1. Denitrification tower; 2. Waste liquid tank; 3. Support plate; 4. Connecting ring; 5. Conical cover; 6. Motor; 7. Rotating shaft; 8. Stirring device; 9. Connecting block; 10. Rotating block; 11. Rotary seat; 12. Fixing block; 13. Air inlet pipe; 14. Exhaust pipe; 15. Sealing plug; 16. Isolation pipe; 17. Liquid injection pipe; 18. Conduit pipe; 19. Liquid pump; 20. Spray pipe. Detailed Implementation

[0026] Please refer to the following: Figure 1-8A flue gas denitrification device includes a denitrification tower 1, a waste liquid tank 2 installed at the bottom of the denitrification tower 1, a support plate 3 installed at the bottom of the waste liquid tank 2, the bottom of the support plate 3 being configured with a T-shape, multiple sets of through holes opened at the bottom of the denitrification tower 1, a conical cover 5 installed at the top of the denitrification tower 1 via a connecting ring 4, a motor 6 installed at the top of the conical cover 5, a rotating shaft 7 installed at the bottom of the motor 6, the rotating shaft 7 passing through the top and bottom of the conical cover 5 and extending into the interior of the denitrification tower 1, a stirring device 8 installed on the outside of the rotating shaft 7, and a connecting block 9 installed at the bottom of the rotating shaft 7, the connecting block 9 being installed in a connecting groove opened at the top of the rotating block 10. The rotating block 10 is installed in the rotating groove inside the rotating seat 11. The rotating seat 11 is installed on the inner bottom surface of the denitrification tower 1. The fixing block 12 is installed on the outer bottom of the denitrification tower 1. The air inlet pipe 13 is installed on the left side of the top of the denitrification tower 1. The exhaust pipe 14 is installed on the right side of the bottom of the denitrification tower 1. The waste liquid pool 2 has a drain port on the front, in which a sealing plug 15 is installed. The isolation pipe 16 is installed inside the conical cover 5. The liquid injection pipe 17 is installed on the left side of the conical cover 5. Six sets of conduits 18 are installed at the bottom of the conical cover 5. A liquid pump 19 is installed at the bottom of the conduits 18. A spray pipe 20 is installed at the bottom of the liquid pump 19.

[0027] Preferably, three sets of support plates 3 are evenly distributed at the bottom of the waste liquid tank 2. The support plates 3 are designed with an arc-shaped structure, which gives them good stability. The bottom width of the support plates 3 is greater than the top width, so as to provide good support for the waste liquid tank 2. The three sets of support plates 3 can provide good support for the whole device. Three sets of fixing blocks 12 are evenly distributed on the outer side of the bottom of the denitrification tower 1. The fixing blocks 12 are designed with an L-shaped structure. Their sides are fixedly connected to the bottom of the outer side of the denitrification tower 1. Their bottoms are fixedly connected to the top of the waste liquid tank 2 through four sets of fixing bolts, so as to fix the denitrification tower 1 on the top of the waste liquid tank 2. The top of the waste liquid tank 2 is designed with an open structure and its interior is designed with a hollow structure. The bottom of the denitrification tower 1 is inserted into the interior of the waste liquid tank 2. The bottom of the denitrification tower 1 is flush with the inner top surface of the waste liquid tank 2, so as to ensure the airtightness of the installation between the denitrification tower 1 and the waste liquid tank 2 and prevent the flue gas inside the denitrification tower 1 from escaping.

[0028] Preferably, the left end of the air inlet pipe 13 installed on the top left side of the denitrification tower 1 is equipped with a pipe cap, which can be used to seal the air inlet pipe 13. Flue gas can be introduced into the interior of the denitrification tower 1 through the air inlet pipe 13. The denitrified flue gas can be discharged through the exhaust pipe 14 installed on the bottom right side of the denitrification tower 1. The right end of the exhaust pipe 14 is also equipped with a pipe cap to seal the exhaust pipe 14. A set of connecting rings 4 are installed on the top outer side of the denitrification tower 1 and the bottom outer side of the conical cover 5. The two sets of connecting rings 4 are fixedly connected by six sets of symmetrical fixing bolts, thereby installing the conical cover 5 on the top of the denitrification tower 1. The bottom of the conical cover 5 is set as a closed structure. The interior of the conical cover 5 can store absorbent liquid for absorbing nitrates in the flue gas. The absorbent liquid can be added through the liquid injection pipe 17 installed on the left side of the conical cover 5. The left end of the liquid injection pipe 17 is equipped with a pipe cap, which can be used to seal the liquid injection pipe 17.

[0029] Preferably, the motor 6 is mounted on the top of the conical cover 5 by fixing bolts. The top and bottom of the conical cover 5 both have through holes adapted to the rotating shaft 7. The connecting block 9 mounted on the bottom of the rotating shaft 7 is rectangular, and the rotating groove on the top of the rotating block 10 is also rectangular, thus forming an insertion connection between the rotating shaft 7 and the rotating block 10. The rotating groove on the top of the rotating seat 11 is T-shaped, and the bottom of the rotating block 10 is T-shaped, thus forming a rotatable connection between the rotating block 10 and the rotating seat 11. The bottom of the rotating seat 11 is fixedly connected to the inner bottom surface of the denitrification tower 1 by fixing bolts, thus fixing the rotating seat 11 onto the inner bottom surface of the denitrification tower 1. The rotating seat 11 is also symmetrically designed to allow the rotating block 10 to be installed into the rotating groove on the top of the rotating seat 11. In the groove, the rotating seat 11 and the rotating block 10 form a rotatable connection, and the rotating shaft 7 forms a rotatable connection with the rotating seat 11 after being inserted and installed on the top of the rotating block 10. At this time, the rotating shaft 7 forms a rotatable connection with the inner bottom surface of the denitrification tower 1, so that the rotating shaft 7 can be driven to rotate by the motor 6. When it is necessary to remove the conical cover 5 from the top of the denitrification tower 1, the fixing bolts on the two sets of connecting rings 4 are removed, and the conical cover 5 and the rotating shaft 7 can be removed from the top of the denitrification tower 1 together. At this time, the stirring device 8 installed on the rotating shaft 7 is removed from the inside of the denitrification tower 1, so that the stirring device 8 can be cleaned. When installing the conical cover 5, the connecting block 9 needs to be correctly aligned with the slot opened on the top of the rotating block 10, so that the conical cover 5 can be correctly installed on the top of the denitrification tower 1. It is very convenient to assemble this device.

[0030] Preferably, the bottom of the conical cover 5 has six sets of through holes, and six sets of conduits 18 are fixedly installed therein. The liquid pump 19 is located at the bottom of the conical cover 5, that is, in the internal top space of the denitrification tower 1. The bottom of the spray pipe 20 installed at the bottom of the liquid pump 19 has multiple sets of spray nozzles. The absorbent liquid in the conical cover 5 can be introduced into the liquid pump 19 through the conduits 18. The liquid pump 19 can pressurize the absorbent liquid and introduce it into the interior of the spray pipe 20. Then the spray pipe 20 converts the absorbent liquid into a mist and sprays it into the internal space of the denitrification tower 1. Thus, the absorbent liquid can absorb the nitrates in the flue gas. Three sets of stirring devices 8 are installed on the outside of the rotating shaft 7. Each set of stirring devices 8 consists of six sets of symmetrical stirring plates. The rotation of the rotating shaft 7 can drive the stirring devices 8 to rotate, thereby agitating and disturbing the flue gas inside the denitrification tower 1, so that the flue gas can fully react with the atomized absorbent liquid and achieve a better flue gas denitrification treatment effect.

[0031] Preferably, the bottom of the denitrification tower 1 is evenly provided with multiple sets of through holes. The absorbent liquid that has absorbed nitrates in the flue gas will be concentrated into the interior of the waste liquid tank 2 through the through holes provided at the bottom of the denitrification tower 1. The waste liquid can be discharged through the drain port provided on the front of the waste liquid tank 2. The sealing plug 15 is installed in the drain port through a threaded structure, thereby sealing the drain port. The outer end of the sealing plug 15 is set with a hexagonal structure so that the operator can rotate it.

[0032] Preferably, the isolation tube 16 is installed in the middle of the conical cover 5. The top of the isolation tube 16 is fixedly connected to the top surface of the conical cover 5, and the bottom of the isolation tube 16 is fixedly connected to the bottom surface of the conical cover 5. The part of the rotating shaft 7 inside the conical cover 5 is inside the isolation tube 16, which can protect the rotating shaft 7 and prevent the absorbent liquid from corroding the rotating shaft 7. At the same time, it can prevent the absorbent liquid in the conical cover 5 from leaking from the through holes opened at the top and bottom of the conical cover 5 that are adapted to the rotating shaft 7.

[0033] The standard parts used in this embodiment can be purchased directly from the market, and can also be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the structure and principle of the components known to those skilled in the art can be known by those skilled in the art through technical manuals or conventional experimental methods.

[0034] 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, or they can be used directly or indirectly, without departing from the principles and spirit of the present invention. In other related technical fields, the scope of the present invention is defined by the appended claims and their equivalents, and they are similarly included within the patent protection scope of the present invention.

Claims

1. A flue gas denitrification device, comprising a denitrification tower (1), wherein a waste liquid tank (2) is installed at the bottom of the denitrification tower (1), and a support plate (3) is installed at the bottom of the waste liquid tank (2), characterized in that: The bottom of the support plate (3) is configured as a T-shaped structure. Multiple sets of through holes are opened at the bottom of the denitrification tower (1). A conical cover (5) is installed on the top of the denitrification tower (1) via a connecting ring (4). A motor (6) is installed on the top of the conical cover (5). A rotating shaft (7) is installed at the bottom of the motor (6). The rotating shaft (7) passes through the top and bottom of the conical cover (5) and extends into the interior of the denitrification tower (1). A stirring device (8) is installed on the outside of the rotating shaft (7). A connecting block (9) is installed at the bottom of the rotating shaft (7). The connecting block (9) is installed in a connecting groove opened on the top of the rotating block (10). The rotating block (10) is installed in a rotating groove set inside the rotating seat (11). The rotating base (11) is installed on the inner bottom surface of the denitrification tower (1). A fixing block (12) is installed on the outer bottom of the denitrification tower (1). An air inlet pipe (13) is installed on the top left side of the denitrification tower (1). An exhaust pipe (14) is installed on the bottom right side of the denitrification tower (1). A drain outlet is opened on the front of the waste liquid pool (2), in which a sealing plug (15) is installed. An isolation pipe (16) is installed inside the conical cover (5). An injection pipe (17) is installed on the left side of the conical cover (5). Six sets of conduits (18) are installed at the bottom of the conical cover (5). A liquid pump (19) is installed at the bottom of the conduits (18). A spray pipe (20) is installed at the bottom of the liquid pump (19).

2. The flue gas denitrification device according to claim 1, characterized in that: The bottom of the waste liquid tank (2) is evenly distributed with three sets of support plates (3). The support plates (3) are set as arc-shaped structures. The bottom width of the support plates (3) is greater than the top width. The bottom of the denitrification tower (1) is evenly distributed with three sets of fixing blocks (12). The fixing blocks (12) are set as L-shaped structures. Their sides are fixedly connected to the bottom of the outer side of the denitrification tower (1). Their bottoms are fixedly connected to the top of the waste liquid tank (2) through four sets of fixing bolts. The top of the waste liquid tank (2) is set as an open structure. Its interior is set as a hollow structure. The bottom of the denitrification tower (1) is inserted into the interior of the waste liquid tank (2). The bottom of the denitrification tower (1) is flush with the top surface of the interior of the waste liquid tank (2).

3. The flue gas denitrification device according to claim 1, characterized in that: The left end of the air inlet pipe (13) installed on the top left side of the denitrification tower (1) is fitted with a pipe cap, and the right end of the exhaust pipe (14) is also fitted with a pipe cap. A set of connecting rings (4) is installed on the top outer side of the denitrification tower (1) and the bottom outer side of the conical cover (5). The two sets of connecting rings (4) are fixedly connected by six sets of symmetrical fixing bolts. The bottom of the conical cover (5) is set as a closed structure. The left end of the liquid injection pipe (17) is fitted with a pipe cap.

4. The flue gas denitrification device according to claim 1, characterized in that: The motor (6) is mounted on the top of the conical cover (5) by a fixing bolt. The top and bottom of the conical cover (5) are provided with through holes that are compatible with the rotating shaft (7). The connecting block (9) installed at the bottom of the rotating shaft (7) is set as a rectangular structure. The rotating groove opened at the top of the rotating block (10) is set as a rectangular structure that is compatible with it. The rotating groove opened at the top of the rotating seat (11) is set as a T-shaped structure. The bottom of the rotating block (10) is set as a T-shaped structure that is compatible with it. The bottom of the rotating seat (11) is fixedly connected to the inner bottom surface of the denitrification tower (1) by a fixing bolt. At the same time, the rotating seat (11) is set as a left-right symmetrical structure.

5. The flue gas denitrification device according to claim 1, characterized in that: The bottom of the conical cover (5) has six sets of through holes, and six sets of conduits (18) are fixedly installed therein. The liquid pump (19) is located at the bottom of the conical cover (5), that is, in the internal top space of the denitrification tower (1). The bottom of the spray pipe (20) installed at the bottom of the liquid pump (19) has multiple sets of spray nozzles. Three sets of stirring devices (8) are installed on the outside of the rotating shaft (7). Each set of stirring devices (8) consists of six sets of symmetrical stirring plates.

6. The flue gas denitrification device according to claim 1, characterized in that: The bottom of the denitrification tower (1) is evenly provided with multiple sets of through holes, and the sealing plug (15) is installed in the drain port through a threaded structure. The outer end of the sealing plug (15) is set as a hexagonal structure.

7. The flue gas denitrification device according to claim 1, characterized in that: The insulating tube (16) is installed in the middle of the conical cover (5). The top of the insulating tube (16) is fixedly connected to the top surface of the conical cover (5), and the bottom of the insulating tube (16) is fixedly connected to the bottom surface of the conical cover (5). The part of the rotating shaft (7) inside the conical cover (5) is inside the insulating tube (16).

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